./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread/triangular-longer-1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longer-1.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 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 19:44:41,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 19:44:41,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 19:44:41,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 19:44:41,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 19:44:41,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 19:44:41,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 19:44:41,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 19:44:41,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 19:44:41,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 19:44:41,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 19:44:41,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 19:44:41,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 19:44:41,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 19:44:41,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 19:44:41,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 19:44:41,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 19:44:41,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 19:44:41,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 19:44:41,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 19:44:41,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 19:44:41,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 19:44:41,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 19:44:41,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 19:44:41,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 19:44:41,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 19:44:41,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 19:44:41,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 19:44:41,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 19:44:41,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 19:44:41,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 19:44:41,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 19:44:41,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 19:44:41,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 19:44:41,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 19:44:41,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 19:44:41,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 19:44:41,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 19:44:41,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 19:44:41,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 19:44:41,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 19:44:41,633 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 19:44:41,671 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 19:44:41,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 19:44:41,672 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 19:44:41,672 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 19:44:41,673 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 19:44:41,673 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 19:44:41,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 19:44:41,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 19:44:41,674 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 19:44:41,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 19:44:41,675 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 19:44:41,676 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 19:44:41,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 19:44:41,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 19:44:41,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 19:44:41,676 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 19:44:41,677 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 19:44:41,677 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 19:44:41,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 19:44:41,677 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 19:44:41,677 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 19:44:41,677 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 19:44:41,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 19:44:41,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 19:44:41,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 19:44:41,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 19:44:41,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 19:44:41,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 19:44:41,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 19:44:41,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 19:44:41,679 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 19:44:41,680 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 19:44:41,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 19:44:41,680 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 19:44:41,680 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 19:44:41,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 19:44:41,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 19:44:41,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 19:44:41,996 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 19:44:41,997 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 19:44:41,998 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-1.i [2023-08-29 19:44:43,188 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 19:44:43,456 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 19:44:43,457 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i [2023-08-29 19:44:43,466 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2509e0e4/d040c85f51ad4ea9aea9ca5c872de3ae/FLAG6f3a1d74d [2023-08-29 19:44:43,483 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2509e0e4/d040c85f51ad4ea9aea9ca5c872de3ae [2023-08-29 19:44:43,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 19:44:43,486 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 19:44:43,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 19:44:43,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 19:44:43,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 19:44:43,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:44:43" (1/1) ... [2023-08-29 19:44:43,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ed00c21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:43, skipping insertion in model container [2023-08-29 19:44:43,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:44:43" (1/1) ... [2023-08-29 19:44:43,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 19:44:43,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 19:44:43,902 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-1.i[30961,30974] [2023-08-29 19:44:43,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 19:44:43,915 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 19:44:43,962 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-1.i[30961,30974] [2023-08-29 19:44:43,965 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 19:44:43,999 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 19:44:43,999 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 19:44:44,005 INFO L208 MainTranslator]: Completed translation [2023-08-29 19:44:44,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:44 WrapperNode [2023-08-29 19:44:44,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 19:44:44,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 19:44:44,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 19:44:44,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 19:44:44,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:44" (1/1) ... [2023-08-29 19:44:44,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:44" (1/1) ... [2023-08-29 19:44:44,064 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2023-08-29 19:44:44,064 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 19:44:44,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 19:44:44,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 19:44:44,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 19:44:44,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:44" (1/1) ... [2023-08-29 19:44:44,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:44" (1/1) ... [2023-08-29 19:44:44,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:44" (1/1) ... [2023-08-29 19:44:44,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:44" (1/1) ... [2023-08-29 19:44:44,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:44" (1/1) ... [2023-08-29 19:44:44,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:44" (1/1) ... [2023-08-29 19:44:44,102 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:44" (1/1) ... [2023-08-29 19:44:44,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:44" (1/1) ... [2023-08-29 19:44:44,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 19:44:44,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 19:44:44,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 19:44:44,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 19:44:44,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:44" (1/1) ... [2023-08-29 19:44:44,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 19:44:44,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:44:44,146 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 19:44:44,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 19:44:44,183 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-29 19:44:44,184 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-29 19:44:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-29 19:44:44,184 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-29 19:44:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 19:44:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 19:44:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 19:44:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 19:44:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 19:44:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 19:44:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 19:44:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 19:44:44,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 19:44:44,186 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 19:44:44,340 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 19:44:44,342 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 19:44:44,528 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 19:44:44,534 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 19:44:44,534 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-29 19:44:44,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:44:44 BoogieIcfgContainer [2023-08-29 19:44:44,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 19:44:44,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 19:44:44,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 19:44:44,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 19:44:44,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 07:44:43" (1/3) ... [2023-08-29 19:44:44,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24fc3860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:44:44, skipping insertion in model container [2023-08-29 19:44:44,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:44" (2/3) ... [2023-08-29 19:44:44,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24fc3860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:44:44, skipping insertion in model container [2023-08-29 19:44:44,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:44:44" (3/3) ... [2023-08-29 19:44:44,545 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2023-08-29 19:44:44,560 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 19:44:44,560 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-29 19:44:44,560 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 19:44:44,620 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 19:44:44,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 74 transitions, 158 flow [2023-08-29 19:44:44,687 INFO L130 PetriNetUnfolder]: 5/72 cut-off events. [2023-08-29 19:44:44,687 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:44:44,691 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. [2023-08-29 19:44:44,692 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 74 transitions, 158 flow [2023-08-29 19:44:44,697 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 72 transitions, 150 flow [2023-08-29 19:44:44,700 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 19:44:44,715 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 72 transitions, 150 flow [2023-08-29 19:44:44,719 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 72 transitions, 150 flow [2023-08-29 19:44:44,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 72 transitions, 150 flow [2023-08-29 19:44:44,754 INFO L130 PetriNetUnfolder]: 5/72 cut-off events. [2023-08-29 19:44:44,755 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:44:44,756 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. [2023-08-29 19:44:44,757 INFO L119 LiptonReduction]: Number of co-enabled transitions 1254 [2023-08-29 19:44:47,069 INFO L134 LiptonReduction]: Checked pairs total: 1104 [2023-08-29 19:44:47,070 INFO L136 LiptonReduction]: Total number of compositions: 70 [2023-08-29 19:44:47,091 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 19:44:47,096 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;@21179774, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 19:44:47,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-29 19:44:47,098 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 19:44:47,098 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:44:47,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:47,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 19:44:47,099 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)] === [2023-08-29 19:44:47,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:47,103 INFO L85 PathProgramCache]: Analyzing trace with hash 294, now seen corresponding path program 1 times [2023-08-29 19:44:47,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:47,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184445688] [2023-08-29 19:44:47,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:47,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:47,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:44:47,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:47,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184445688] [2023-08-29 19:44:47,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184445688] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:47,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:47,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 19:44:47,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629654653] [2023-08-29 19:44:47,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:47,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 19:44:47,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:47,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 19:44:47,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 19:44:47,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 144 [2023-08-29 19:44:47,284 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) [2023-08-29 19:44:47,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:47,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 144 [2023-08-29 19:44:47,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:47,360 INFO L130 PetriNetUnfolder]: 112/179 cut-off events. [2023-08-29 19:44:47,360 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 19:44:47,362 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. [2023-08-29 19:44:47,364 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 16 selfloop transitions, 0 changer transitions 1/17 dead transitions. [2023-08-29 19:44:47,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2023-08-29 19:44:47,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 19:44:47,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 19:44:47,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 156 transitions. [2023-08-29 19:44:47,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2023-08-29 19:44:47,378 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 156 transitions. [2023-08-29 19:44:47,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 156 transitions. [2023-08-29 19:44:47,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:47,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 156 transitions. [2023-08-29 19:44:47,389 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) [2023-08-29 19:44:47,393 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) [2023-08-29 19:44:47,393 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) [2023-08-29 19:44:47,395 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 46 flow. Second operand 2 states and 156 transitions. [2023-08-29 19:44:47,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2023-08-29 19:44:47,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:44:47,398 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 36 flow [2023-08-29 19:44:47,400 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} [2023-08-29 19:44:47,402 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-08-29 19:44:47,402 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 36 flow [2023-08-29 19:44:47,403 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) [2023-08-29 19:44:47,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:47,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 19:44:47,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 19:44:47,404 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)] === [2023-08-29 19:44:47,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:47,404 INFO L85 PathProgramCache]: Analyzing trace with hash 286821, now seen corresponding path program 1 times [2023-08-29 19:44:47,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:47,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583353588] [2023-08-29 19:44:47,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:47,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:47,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:44:47,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:47,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583353588] [2023-08-29 19:44:47,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583353588] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:47,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:47,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:44:47,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458166089] [2023-08-29 19:44:47,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:47,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:44:47,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:47,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:44:47,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:44:47,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 144 [2023-08-29 19:44:47,635 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) [2023-08-29 19:44:47,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:47,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 144 [2023-08-29 19:44:47,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:47,695 INFO L130 PetriNetUnfolder]: 91/146 cut-off events. [2023-08-29 19:44:47,696 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:44:47,696 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. [2023-08-29 19:44:47,697 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-08-29 19:44:47,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 88 flow [2023-08-29 19:44:47,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:44:47,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:44:47,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 214 transitions. [2023-08-29 19:44:47,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49537037037037035 [2023-08-29 19:44:47,700 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 214 transitions. [2023-08-29 19:44:47,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 214 transitions. [2023-08-29 19:44:47,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:47,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 214 transitions. [2023-08-29 19:44:47,702 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) [2023-08-29 19:44:47,703 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) [2023-08-29 19:44:47,703 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) [2023-08-29 19:44:47,704 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 36 flow. Second operand 3 states and 214 transitions. [2023-08-29 19:44:47,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 88 flow [2023-08-29 19:44:47,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 19:44:47,705 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 38 flow [2023-08-29 19:44:47,705 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} [2023-08-29 19:44:47,706 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-08-29 19:44:47,706 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 38 flow [2023-08-29 19:44:47,706 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) [2023-08-29 19:44:47,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:47,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 19:44:47,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 19:44:47,707 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)] === [2023-08-29 19:44:47,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:47,707 INFO L85 PathProgramCache]: Analyzing trace with hash 286820, now seen corresponding path program 1 times [2023-08-29 19:44:47,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:47,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008635119] [2023-08-29 19:44:47,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:47,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:47,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:47,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:44:47,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:47,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008635119] [2023-08-29 19:44:47,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008635119] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:47,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:47,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:44:47,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398931116] [2023-08-29 19:44:47,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:47,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:44:47,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:47,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:44:47,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:44:47,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:44:47,788 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) [2023-08-29 19:44:47,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:47,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:44:47,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:47,834 INFO L130 PetriNetUnfolder]: 88/140 cut-off events. [2023-08-29 19:44:47,834 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:44:47,836 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. [2023-08-29 19:44:47,837 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 18 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2023-08-29 19:44:47,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 88 flow [2023-08-29 19:44:47,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:44:47,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:44:47,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 204 transitions. [2023-08-29 19:44:47,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-08-29 19:44:47,842 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 204 transitions. [2023-08-29 19:44:47,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 204 transitions. [2023-08-29 19:44:47,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:47,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 204 transitions. [2023-08-29 19:44:47,843 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) [2023-08-29 19:44:47,845 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) [2023-08-29 19:44:47,846 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) [2023-08-29 19:44:47,846 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 38 flow. Second operand 3 states and 204 transitions. [2023-08-29 19:44:47,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 88 flow [2023-08-29 19:44:47,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:44:47,847 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2023-08-29 19:44:47,847 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} [2023-08-29 19:44:47,849 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -4 predicate places. [2023-08-29 19:44:47,851 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2023-08-29 19:44:47,852 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) [2023-08-29 19:44:47,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:47,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 19:44:47,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 19:44:47,853 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)] === [2023-08-29 19:44:47,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:47,853 INFO L85 PathProgramCache]: Analyzing trace with hash -45115990, now seen corresponding path program 1 times [2023-08-29 19:44:47,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:47,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582151925] [2023-08-29 19:44:47,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:47,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:48,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:44:48,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:48,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582151925] [2023-08-29 19:44:48,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582151925] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:48,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:48,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 19:44:48,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481725379] [2023-08-29 19:44:48,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:48,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 19:44:48,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:48,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 19:44:48,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 19:44:48,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:44:48,044 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) [2023-08-29 19:44:48,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:48,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:44:48,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:48,126 INFO L130 PetriNetUnfolder]: 176/281 cut-off events. [2023-08-29 19:44:48,127 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-29 19:44:48,130 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 876 event pairs, 12 based on Foata normal form. 15/223 useless extension candidates. Maximal degree in co-relation 598. Up to 128 conditions per place. [2023-08-29 19:44:48,131 INFO L137 encePairwiseOnDemand]: 138/144 looper letters, 31 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2023-08-29 19:44:48,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 39 transitions, 170 flow [2023-08-29 19:44:48,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 19:44:48,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 19:44:48,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 351 transitions. [2023-08-29 19:44:48,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2023-08-29 19:44:48,134 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 351 transitions. [2023-08-29 19:44:48,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 351 transitions. [2023-08-29 19:44:48,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:48,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 351 transitions. [2023-08-29 19:44:48,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.2) internal successors, (351), 5 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:48,152 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) [2023-08-29 19:44:48,153 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) [2023-08-29 19:44:48,153 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 5 states and 351 transitions. [2023-08-29 19:44:48,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 39 transitions, 170 flow [2023-08-29 19:44:48,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 39 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:44:48,156 INFO L231 Difference]: Finished difference. Result has 26 places, 21 transitions, 92 flow [2023-08-29 19:44:48,156 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=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=26, PETRI_TRANSITIONS=21} [2023-08-29 19:44:48,158 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 2 predicate places. [2023-08-29 19:44:48,158 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 92 flow [2023-08-29 19:44:48,158 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) [2023-08-29 19:44:48,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:48,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:44:48,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 19:44:48,159 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)] === [2023-08-29 19:44:48,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:48,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1398595235, now seen corresponding path program 1 times [2023-08-29 19:44:48,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:48,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861554251] [2023-08-29 19:44:48,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:48,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:48,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:44:48,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:48,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861554251] [2023-08-29 19:44:48,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861554251] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:48,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:48,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 19:44:48,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045380076] [2023-08-29 19:44:48,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:48,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 19:44:48,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:48,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 19:44:48,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 19:44:48,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 144 [2023-08-29 19:44:48,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 92 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) [2023-08-29 19:44:48,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:48,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 144 [2023-08-29 19:44:48,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:48,383 INFO L130 PetriNetUnfolder]: 130/212 cut-off events. [2023-08-29 19:44:48,384 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-08-29 19:44:48,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 212 events. 130/212 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 613 event pairs, 47 based on Foata normal form. 23/235 useless extension candidates. Maximal degree in co-relation 611. Up to 143 conditions per place. [2023-08-29 19:44:48,385 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 17 selfloop transitions, 1 changer transitions 11/29 dead transitions. [2023-08-29 19:44:48,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 184 flow [2023-08-29 19:44:48,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 19:44:48,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 19:44:48,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 256 transitions. [2023-08-29 19:44:48,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-29 19:44:48,387 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 256 transitions. [2023-08-29 19:44:48,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 256 transitions. [2023-08-29 19:44:48,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:48,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 256 transitions. [2023-08-29 19:44:48,388 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) [2023-08-29 19:44:48,389 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) [2023-08-29 19:44:48,389 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) [2023-08-29 19:44:48,390 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 92 flow. Second operand 4 states and 256 transitions. [2023-08-29 19:44:48,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 184 flow [2023-08-29 19:44:48,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 19:44:48,392 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 82 flow [2023-08-29 19:44:48,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-08-29 19:44:48,392 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places. [2023-08-29 19:44:48,393 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 82 flow [2023-08-29 19:44:48,393 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) [2023-08-29 19:44:48,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:48,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:44:48,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 19:44:48,394 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)] === [2023-08-29 19:44:48,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:48,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1179996120, now seen corresponding path program 1 times [2023-08-29 19:44:48,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:48,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40735635] [2023-08-29 19:44:48,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:48,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:48,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:44:48,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:48,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40735635] [2023-08-29 19:44:48,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40735635] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:48,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:48,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 19:44:48,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658971689] [2023-08-29 19:44:48,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:48,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 19:44:48,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:48,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 19:44:48,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 19:44:48,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:44:48,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 82 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) [2023-08-29 19:44:48,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:48,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:44:48,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:48,559 INFO L130 PetriNetUnfolder]: 92/157 cut-off events. [2023-08-29 19:44:48,560 INFO L131 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2023-08-29 19:44:48,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 157 events. 92/157 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 433 event pairs, 19 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 450. Up to 61 conditions per place. [2023-08-29 19:44:48,561 INFO L137 encePairwiseOnDemand]: 140/144 looper letters, 20 selfloop transitions, 8 changer transitions 2/30 dead transitions. [2023-08-29 19:44:48,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 180 flow [2023-08-29 19:44:48,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 19:44:48,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 19:44:48,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 269 transitions. [2023-08-29 19:44:48,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4670138888888889 [2023-08-29 19:44:48,563 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 269 transitions. [2023-08-29 19:44:48,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 269 transitions. [2023-08-29 19:44:48,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:48,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 269 transitions. [2023-08-29 19:44:48,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:48,565 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) [2023-08-29 19:44:48,565 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) [2023-08-29 19:44:48,566 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 82 flow. Second operand 4 states and 269 transitions. [2023-08-29 19:44:48,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 180 flow [2023-08-29 19:44:48,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:44:48,567 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 120 flow [2023-08-29 19:44:48,568 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=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2023-08-29 19:44:48,568 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 5 predicate places. [2023-08-29 19:44:48,568 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 120 flow [2023-08-29 19:44:48,569 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) [2023-08-29 19:44:48,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:48,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:44:48,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 19:44:48,569 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)] === [2023-08-29 19:44:48,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:48,570 INFO L85 PathProgramCache]: Analyzing trace with hash -407213147, now seen corresponding path program 1 times [2023-08-29 19:44:48,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:48,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615381919] [2023-08-29 19:44:48,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:48,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:48,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:48,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:44:48,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:48,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615381919] [2023-08-29 19:44:48,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615381919] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:48,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:48,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 19:44:48,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352648734] [2023-08-29 19:44:48,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:48,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 19:44:48,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:48,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 19:44:48,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 19:44:48,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:44:48,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 120 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) [2023-08-29 19:44:48,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:48,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:44:48,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:48,712 INFO L130 PetriNetUnfolder]: 132/229 cut-off events. [2023-08-29 19:44:48,712 INFO L131 PetriNetUnfolder]: For 288/288 co-relation queries the response was YES. [2023-08-29 19:44:48,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 229 events. 132/229 cut-off events. For 288/288 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 720 event pairs, 23 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 749. Up to 101 conditions per place. [2023-08-29 19:44:48,714 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-08-29 19:44:48,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 45 transitions, 302 flow [2023-08-29 19:44:48,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 19:44:48,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 19:44:48,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 404 transitions. [2023-08-29 19:44:48,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4675925925925926 [2023-08-29 19:44:48,716 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 404 transitions. [2023-08-29 19:44:48,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 404 transitions. [2023-08-29 19:44:48,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:48,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 404 transitions. [2023-08-29 19:44:48,717 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) [2023-08-29 19:44:48,719 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) [2023-08-29 19:44:48,719 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) [2023-08-29 19:44:48,719 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 120 flow. Second operand 6 states and 404 transitions. [2023-08-29 19:44:48,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 45 transitions, 302 flow [2023-08-29 19:44:48,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 45 transitions, 286 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-29 19:44:48,724 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 204 flow [2023-08-29 19:44:48,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=28, 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=204, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2023-08-29 19:44:48,725 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 13 predicate places. [2023-08-29 19:44:48,725 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 204 flow [2023-08-29 19:44:48,725 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) [2023-08-29 19:44:48,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:48,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:44:48,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 19:44:48,726 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)] === [2023-08-29 19:44:48,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:48,726 INFO L85 PathProgramCache]: Analyzing trace with hash -407195477, now seen corresponding path program 2 times [2023-08-29 19:44:48,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:48,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977626773] [2023-08-29 19:44:48,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:48,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:48,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:44:48,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:48,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977626773] [2023-08-29 19:44:48,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977626773] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:48,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:48,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 19:44:48,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628890822] [2023-08-29 19:44:48,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:48,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 19:44:48,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:48,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 19:44:48,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 19:44:48,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:44:48,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 204 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) [2023-08-29 19:44:48,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:48,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:44:48,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:48,891 INFO L130 PetriNetUnfolder]: 114/199 cut-off events. [2023-08-29 19:44:48,891 INFO L131 PetriNetUnfolder]: For 482/482 co-relation queries the response was YES. [2023-08-29 19:44:48,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 199 events. 114/199 cut-off events. For 482/482 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 617 event pairs, 23 based on Foata normal form. 10/209 useless extension candidates. Maximal degree in co-relation 762. Up to 84 conditions per place. [2023-08-29 19:44:48,892 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 29 selfloop transitions, 11 changer transitions 4/44 dead transitions. [2023-08-29 19:44:48,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 44 transitions, 350 flow [2023-08-29 19:44:48,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 19:44:48,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 19:44:48,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 338 transitions. [2023-08-29 19:44:48,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2023-08-29 19:44:48,894 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 338 transitions. [2023-08-29 19:44:48,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 338 transitions. [2023-08-29 19:44:48,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:48,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 338 transitions. [2023-08-29 19:44:48,896 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) [2023-08-29 19:44:48,897 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) [2023-08-29 19:44:48,897 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) [2023-08-29 19:44:48,897 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 204 flow. Second operand 5 states and 338 transitions. [2023-08-29 19:44:48,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 44 transitions, 350 flow [2023-08-29 19:44:48,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 336 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-08-29 19:44:48,900 INFO L231 Difference]: Finished difference. Result has 43 places, 29 transitions, 237 flow [2023-08-29 19:44:48,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=43, PETRI_TRANSITIONS=29} [2023-08-29 19:44:48,901 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 19 predicate places. [2023-08-29 19:44:48,901 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 237 flow [2023-08-29 19:44:48,901 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) [2023-08-29 19:44:48,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:48,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:44:48,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 19:44:48,902 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)] === [2023-08-29 19:44:48,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:48,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1802518163, now seen corresponding path program 1 times [2023-08-29 19:44:48,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:48,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806367771] [2023-08-29 19:44:48,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:48,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:48,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:44:48,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:48,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806367771] [2023-08-29 19:44:48,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806367771] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:48,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:48,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:44:48,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926788735] [2023-08-29 19:44:48,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:48,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 19:44:48,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:48,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 19:44:48,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 19:44:48,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:44:48,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 29 transitions, 237 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) [2023-08-29 19:44:48,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:48,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:44:48,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:49,087 INFO L130 PetriNetUnfolder]: 150/263 cut-off events. [2023-08-29 19:44:49,087 INFO L131 PetriNetUnfolder]: For 1045/1045 co-relation queries the response was YES. [2023-08-29 19:44:49,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1096 conditions, 263 events. 150/263 cut-off events. For 1045/1045 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 858 event pairs, 20 based on Foata normal form. 8/271 useless extension candidates. Maximal degree in co-relation 1079. Up to 73 conditions per place. [2023-08-29 19:44:49,089 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 35 selfloop transitions, 20 changer transitions 3/58 dead transitions. [2023-08-29 19:44:49,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 497 flow [2023-08-29 19:44:49,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 19:44:49,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 19:44:49,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 534 transitions. [2023-08-29 19:44:49,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2023-08-29 19:44:49,091 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 534 transitions. [2023-08-29 19:44:49,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 534 transitions. [2023-08-29 19:44:49,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:49,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 534 transitions. [2023-08-29 19:44:49,093 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) [2023-08-29 19:44:49,095 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) [2023-08-29 19:44:49,095 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) [2023-08-29 19:44:49,095 INFO L175 Difference]: Start difference. First operand has 43 places, 29 transitions, 237 flow. Second operand 8 states and 534 transitions. [2023-08-29 19:44:49,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 497 flow [2023-08-29 19:44:49,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 458 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-29 19:44:49,099 INFO L231 Difference]: Finished difference. Result has 50 places, 35 transitions, 337 flow [2023-08-29 19:44:49,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=337, PETRI_PLACES=50, PETRI_TRANSITIONS=35} [2023-08-29 19:44:49,100 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 26 predicate places. [2023-08-29 19:44:49,100 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 35 transitions, 337 flow [2023-08-29 19:44:49,101 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) [2023-08-29 19:44:49,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:49,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:44:49,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 19:44:49,101 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)] === [2023-08-29 19:44:49,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:49,102 INFO L85 PathProgramCache]: Analyzing trace with hash -105307223, now seen corresponding path program 2 times [2023-08-29 19:44:49,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:49,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756393146] [2023-08-29 19:44:49,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:49,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:49,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:44:49,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:49,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756393146] [2023-08-29 19:44:49,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756393146] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:49,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:49,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:44:49,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260442715] [2023-08-29 19:44:49,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:49,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 19:44:49,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:49,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 19:44:49,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-29 19:44:49,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:44:49,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 35 transitions, 337 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) [2023-08-29 19:44:49,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:49,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:44:49,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:49,289 INFO L130 PetriNetUnfolder]: 138/243 cut-off events. [2023-08-29 19:44:49,290 INFO L131 PetriNetUnfolder]: For 1281/1281 co-relation queries the response was YES. [2023-08-29 19:44:49,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1151 conditions, 243 events. 138/243 cut-off events. For 1281/1281 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 797 event pairs, 20 based on Foata normal form. 8/251 useless extension candidates. Maximal degree in co-relation 1131. Up to 69 conditions per place. [2023-08-29 19:44:49,292 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 27 selfloop transitions, 20 changer transitions 8/55 dead transitions. [2023-08-29 19:44:49,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 553 flow [2023-08-29 19:44:49,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 19:44:49,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 19:44:49,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 467 transitions. [2023-08-29 19:44:49,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4632936507936508 [2023-08-29 19:44:49,294 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 467 transitions. [2023-08-29 19:44:49,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 467 transitions. [2023-08-29 19:44:49,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:49,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 467 transitions. [2023-08-29 19:44:49,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 66.71428571428571) internal successors, (467), 7 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:49,312 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) [2023-08-29 19:44:49,313 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) [2023-08-29 19:44:49,313 INFO L175 Difference]: Start difference. First operand has 50 places, 35 transitions, 337 flow. Second operand 7 states and 467 transitions. [2023-08-29 19:44:49,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 553 flow [2023-08-29 19:44:49,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 55 transitions, 502 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-08-29 19:44:49,318 INFO L231 Difference]: Finished difference. Result has 55 places, 36 transitions, 361 flow [2023-08-29 19:44:49,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=361, PETRI_PLACES=55, PETRI_TRANSITIONS=36} [2023-08-29 19:44:49,319 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 31 predicate places. [2023-08-29 19:44:49,319 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 36 transitions, 361 flow [2023-08-29 19:44:49,319 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) [2023-08-29 19:44:49,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:49,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:44:49,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 19:44:49,320 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)] === [2023-08-29 19:44:49,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:49,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1802673473, now seen corresponding path program 3 times [2023-08-29 19:44:49,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:49,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257949947] [2023-08-29 19:44:49,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:49,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:49,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:44:49,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:49,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257949947] [2023-08-29 19:44:49,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257949947] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:49,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:49,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:44:49,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479419350] [2023-08-29 19:44:49,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:49,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 19:44:49,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:49,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 19:44:49,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-29 19:44:49,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:44:49,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 36 transitions, 361 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) [2023-08-29 19:44:49,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:49,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:44:49,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:49,554 INFO L130 PetriNetUnfolder]: 150/263 cut-off events. [2023-08-29 19:44:49,554 INFO L131 PetriNetUnfolder]: For 1539/1539 co-relation queries the response was YES. [2023-08-29 19:44:49,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1280 conditions, 263 events. 150/263 cut-off events. For 1539/1539 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 900 event pairs, 33 based on Foata normal form. 4/267 useless extension candidates. Maximal degree in co-relation 1258. Up to 130 conditions per place. [2023-08-29 19:44:49,556 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 38 selfloop transitions, 16 changer transitions 12/66 dead transitions. [2023-08-29 19:44:49,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 66 transitions, 647 flow [2023-08-29 19:44:49,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 19:44:49,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 19:44:49,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 601 transitions. [2023-08-29 19:44:49,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4637345679012346 [2023-08-29 19:44:49,559 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 601 transitions. [2023-08-29 19:44:49,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 601 transitions. [2023-08-29 19:44:49,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:49,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 601 transitions. [2023-08-29 19:44:49,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 66.77777777777777) internal successors, (601), 9 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:49,562 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) [2023-08-29 19:44:49,563 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) [2023-08-29 19:44:49,563 INFO L175 Difference]: Start difference. First operand has 55 places, 36 transitions, 361 flow. Second operand 9 states and 601 transitions. [2023-08-29 19:44:49,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 66 transitions, 647 flow [2023-08-29 19:44:49,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 597 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-08-29 19:44:49,569 INFO L231 Difference]: Finished difference. Result has 60 places, 39 transitions, 402 flow [2023-08-29 19:44:49,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=402, PETRI_PLACES=60, PETRI_TRANSITIONS=39} [2023-08-29 19:44:49,570 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 36 predicate places. [2023-08-29 19:44:49,570 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 39 transitions, 402 flow [2023-08-29 19:44:49,570 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) [2023-08-29 19:44:49,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:49,571 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:44:49,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 19:44:49,571 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)] === [2023-08-29 19:44:49,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:49,572 INFO L85 PathProgramCache]: Analyzing trace with hash -42916511, now seen corresponding path program 4 times [2023-08-29 19:44:49,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:49,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901607935] [2023-08-29 19:44:49,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:49,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:49,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:44:49,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:49,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901607935] [2023-08-29 19:44:49,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901607935] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:44:49,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239845913] [2023-08-29 19:44:49,651 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 19:44:49,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:44:49,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:44:49,665 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:44:49,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 19:44:49,735 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 19:44:49,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:44:49,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-29 19:44:49,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:44:49,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:44:49,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:44:49,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:44:49,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239845913] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:44:49,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:44:49,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-29 19:44:49,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036345181] [2023-08-29 19:44:49,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:44:49,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 19:44:49,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:49,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 19:44:49,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-08-29 19:44:49,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:44:49,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 39 transitions, 402 flow. Second operand has 13 states, 13 states have (on average 62.84615384615385) internal successors, (817), 13 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:49,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:49,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:44:49,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:50,225 INFO L130 PetriNetUnfolder]: 198/343 cut-off events. [2023-08-29 19:44:50,226 INFO L131 PetriNetUnfolder]: For 2481/2481 co-relation queries the response was YES. [2023-08-29 19:44:50,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1752 conditions, 343 events. 198/343 cut-off events. For 2481/2481 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1135 event pairs, 18 based on Foata normal form. 16/359 useless extension candidates. Maximal degree in co-relation 1728. Up to 91 conditions per place. [2023-08-29 19:44:50,229 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 34 selfloop transitions, 35 changer transitions 22/91 dead transitions. [2023-08-29 19:44:50,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 91 transitions, 988 flow [2023-08-29 19:44:50,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-29 19:44:50,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-29 19:44:50,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 928 transitions. [2023-08-29 19:44:50,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2023-08-29 19:44:50,232 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 928 transitions. [2023-08-29 19:44:50,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 928 transitions. [2023-08-29 19:44:50,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:50,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 928 transitions. [2023-08-29 19:44:50,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 66.28571428571429) internal successors, (928), 14 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:50,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 144.0) internal successors, (2160), 15 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:50,239 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 144.0) internal successors, (2160), 15 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:50,239 INFO L175 Difference]: Start difference. First operand has 60 places, 39 transitions, 402 flow. Second operand 14 states and 928 transitions. [2023-08-29 19:44:50,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 91 transitions, 988 flow [2023-08-29 19:44:50,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 91 transitions, 951 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-29 19:44:50,247 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 724 flow [2023-08-29 19:44:50,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=724, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2023-08-29 19:44:50,249 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 49 predicate places. [2023-08-29 19:44:50,249 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 724 flow [2023-08-29 19:44:50,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 62.84615384615385) internal successors, (817), 13 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:50,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:50,249 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:44:50,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-29 19:44:50,454 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,SelfDestructingSolverStorable11 [2023-08-29 19:44:50,454 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)] === [2023-08-29 19:44:50,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:50,455 INFO L85 PathProgramCache]: Analyzing trace with hash 771926841, now seen corresponding path program 5 times [2023-08-29 19:44:50,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:50,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195910938] [2023-08-29 19:44:50,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:50,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:50,576 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:44:50,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:50,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195910938] [2023-08-29 19:44:50,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195910938] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:44:50,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221550325] [2023-08-29 19:44:50,577 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 19:44:50,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:44:50,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:44:50,579 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:44:50,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 19:44:50,665 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-29 19:44:50,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:44:50,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 19:44:50,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:44:50,731 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:44:50,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:44:50,881 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:44:50,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221550325] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:44:50,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:44:50,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-29 19:44:50,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455743021] [2023-08-29 19:44:50,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:44:50,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-29 19:44:50,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:50,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-29 19:44:50,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-08-29 19:44:50,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:44:50,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 724 flow. Second operand has 16 states, 16 states have (on average 62.8125) internal successors, (1005), 16 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:50,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:50,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:44:50,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:51,164 INFO L130 PetriNetUnfolder]: 254/455 cut-off events. [2023-08-29 19:44:51,164 INFO L131 PetriNetUnfolder]: For 5607/5607 co-relation queries the response was YES. [2023-08-29 19:44:51,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2628 conditions, 455 events. 254/455 cut-off events. For 5607/5607 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1585 event pairs, 55 based on Foata normal form. 32/487 useless extension candidates. Maximal degree in co-relation 2599. Up to 249 conditions per place. [2023-08-29 19:44:51,167 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 65 selfloop transitions, 25 changer transitions 27/117 dead transitions. [2023-08-29 19:44:51,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 117 transitions, 1538 flow [2023-08-29 19:44:51,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-29 19:44:51,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-29 19:44:51,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1059 transitions. [2023-08-29 19:44:51,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596354166666667 [2023-08-29 19:44:51,171 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1059 transitions. [2023-08-29 19:44:51,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1059 transitions. [2023-08-29 19:44:51,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:51,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1059 transitions. [2023-08-29 19:44:51,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 66.1875) internal successors, (1059), 16 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:51,177 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) [2023-08-29 19:44:51,177 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) [2023-08-29 19:44:51,178 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 724 flow. Second operand 16 states and 1059 transitions. [2023-08-29 19:44:51,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 117 transitions, 1538 flow [2023-08-29 19:44:51,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 117 transitions, 1161 flow, removed 175 selfloop flow, removed 5 redundant places. [2023-08-29 19:44:51,192 INFO L231 Difference]: Finished difference. Result has 93 places, 69 transitions, 809 flow [2023-08-29 19:44:51,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=809, PETRI_PLACES=93, PETRI_TRANSITIONS=69} [2023-08-29 19:44:51,193 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 69 predicate places. [2023-08-29 19:44:51,193 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 69 transitions, 809 flow [2023-08-29 19:44:51,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 62.8125) internal successors, (1005), 16 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:51,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:51,194 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:44:51,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-29 19:44:51,401 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,SelfDestructingSolverStorable12 [2023-08-29 19:44:51,401 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)] === [2023-08-29 19:44:51,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:51,402 INFO L85 PathProgramCache]: Analyzing trace with hash -157115917, now seen corresponding path program 6 times [2023-08-29 19:44:51,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:51,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820261046] [2023-08-29 19:44:51,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:51,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:51,526 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:44:51,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:51,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820261046] [2023-08-29 19:44:51,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820261046] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:44:51,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817287136] [2023-08-29 19:44:51,527 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 19:44:51,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:44:51,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:44:51,528 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:44:51,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 19:44:51,604 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-29 19:44:51,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:44:51,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 19:44:51,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:44:51,670 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:44:51,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:44:51,813 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:44:51,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817287136] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:44:51,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:44:51,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-29 19:44:51,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550944149] [2023-08-29 19:44:51,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:44:51,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-29 19:44:51,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:51,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-29 19:44:51,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-08-29 19:44:51,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:44:51,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 69 transitions, 809 flow. Second operand has 17 states, 17 states have (on average 62.8235294117647) internal successors, (1068), 17 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:51,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:51,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:44:51,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:52,320 INFO L130 PetriNetUnfolder]: 408/747 cut-off events. [2023-08-29 19:44:52,321 INFO L131 PetriNetUnfolder]: For 15124/15124 co-relation queries the response was YES. [2023-08-29 19:44:52,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4330 conditions, 747 events. 408/747 cut-off events. For 15124/15124 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3263 event pairs, 44 based on Foata normal form. 32/779 useless extension candidates. Maximal degree in co-relation 4292. Up to 233 conditions per place. [2023-08-29 19:44:52,326 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 73 selfloop transitions, 71 changer transitions 37/181 dead transitions. [2023-08-29 19:44:52,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 181 transitions, 2195 flow [2023-08-29 19:44:52,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-29 19:44:52,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-29 19:44:52,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1456 transitions. [2023-08-29 19:44:52,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2023-08-29 19:44:52,331 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1456 transitions. [2023-08-29 19:44:52,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1456 transitions. [2023-08-29 19:44:52,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:52,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1456 transitions. [2023-08-29 19:44:52,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 66.18181818181819) internal successors, (1456), 22 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:52,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 144.0) internal successors, (3312), 23 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:52,339 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 144.0) internal successors, (3312), 23 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:52,339 INFO L175 Difference]: Start difference. First operand has 93 places, 69 transitions, 809 flow. Second operand 22 states and 1456 transitions. [2023-08-29 19:44:52,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 181 transitions, 2195 flow [2023-08-29 19:44:52,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 181 transitions, 2083 flow, removed 48 selfloop flow, removed 4 redundant places. [2023-08-29 19:44:52,368 INFO L231 Difference]: Finished difference. Result has 124 places, 107 transitions, 1554 flow [2023-08-29 19:44:52,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1554, PETRI_PLACES=124, PETRI_TRANSITIONS=107} [2023-08-29 19:44:52,368 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 100 predicate places. [2023-08-29 19:44:52,369 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 107 transitions, 1554 flow [2023-08-29 19:44:52,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 62.8235294117647) internal successors, (1068), 17 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:52,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:52,369 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:44:52,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-29 19:44:52,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:44:52,575 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)] === [2023-08-29 19:44:52,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:52,575 INFO L85 PathProgramCache]: Analyzing trace with hash 384037113, now seen corresponding path program 7 times [2023-08-29 19:44:52,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:52,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540610797] [2023-08-29 19:44:52,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:52,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:52,701 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:44:52,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:52,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540610797] [2023-08-29 19:44:52,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540610797] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:44:52,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078712038] [2023-08-29 19:44:52,702 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-29 19:44:52,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:44:52,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:44:52,703 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:44:52,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-29 19:44:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:52,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 19:44:52,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:44:52,827 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:44:52,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:44:52,904 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:44:52,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078712038] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:44:52,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:44:52,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-29 19:44:52,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407379602] [2023-08-29 19:44:52,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:44:52,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-29 19:44:52,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:52,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-29 19:44:52,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-08-29 19:44:52,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:44:52,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 107 transitions, 1554 flow. Second operand has 16 states, 16 states have (on average 62.8125) internal successors, (1005), 16 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:52,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:52,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:44:52,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:53,564 INFO L130 PetriNetUnfolder]: 632/1131 cut-off events. [2023-08-29 19:44:53,564 INFO L131 PetriNetUnfolder]: For 41181/41181 co-relation queries the response was YES. [2023-08-29 19:44:53,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8449 conditions, 1131 events. 632/1131 cut-off events. For 41181/41181 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5380 event pairs, 27 based on Foata normal form. 32/1163 useless extension candidates. Maximal degree in co-relation 8396. Up to 369 conditions per place. [2023-08-29 19:44:53,576 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 71 selfloop transitions, 133 changer transitions 46/250 dead transitions. [2023-08-29 19:44:53,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 250 transitions, 3948 flow [2023-08-29 19:44:53,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-29 19:44:53,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-29 19:44:53,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1721 transitions. [2023-08-29 19:44:53,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596688034188034 [2023-08-29 19:44:53,581 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1721 transitions. [2023-08-29 19:44:53,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1721 transitions. [2023-08-29 19:44:53,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:53,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1721 transitions. [2023-08-29 19:44:53,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 66.1923076923077) internal successors, (1721), 26 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:53,591 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) [2023-08-29 19:44:53,592 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) [2023-08-29 19:44:53,592 INFO L175 Difference]: Start difference. First operand has 124 places, 107 transitions, 1554 flow. Second operand 26 states and 1721 transitions. [2023-08-29 19:44:53,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 250 transitions, 3948 flow [2023-08-29 19:44:53,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 250 transitions, 3578 flow, removed 173 selfloop flow, removed 6 redundant places. [2023-08-29 19:44:53,689 INFO L231 Difference]: Finished difference. Result has 157 places, 161 transitions, 2716 flow [2023-08-29 19:44:53,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=1280, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2716, PETRI_PLACES=157, PETRI_TRANSITIONS=161} [2023-08-29 19:44:53,690 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 133 predicate places. [2023-08-29 19:44:53,690 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 161 transitions, 2716 flow [2023-08-29 19:44:53,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 62.8125) internal successors, (1005), 16 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:53,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:53,691 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:44:53,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-29 19:44:53,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-29 19:44:53,898 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)] === [2023-08-29 19:44:53,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:53,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1354159795, now seen corresponding path program 8 times [2023-08-29 19:44:53,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:53,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114122544] [2023-08-29 19:44:53,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:53,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:54,083 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:44:54,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:54,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114122544] [2023-08-29 19:44:54,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114122544] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:44:54,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174694744] [2023-08-29 19:44:54,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 19:44:54,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:44:54,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:44:54,086 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:44:54,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-29 19:44:54,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 19:44:54,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:44:54,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-29 19:44:54,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:44:54,222 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:44:54,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:44:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:44:54,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174694744] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:44:54,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:44:54,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-08-29 19:44:54,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723906910] [2023-08-29 19:44:54,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:44:54,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-29 19:44:54,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:54,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-29 19:44:54,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2023-08-29 19:44:54,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:44:54,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 161 transitions, 2716 flow. Second operand has 25 states, 25 states have (on average 62.48) internal successors, (1562), 25 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:54,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:54,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:44:54,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:55,204 INFO L130 PetriNetUnfolder]: 868/1603 cut-off events. [2023-08-29 19:44:55,205 INFO L131 PetriNetUnfolder]: For 98852/98852 co-relation queries the response was YES. [2023-08-29 19:44:55,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15127 conditions, 1603 events. 868/1603 cut-off events. For 98852/98852 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8678 event pairs, 56 based on Foata normal form. 40/1643 useless extension candidates. Maximal degree in co-relation 15059. Up to 566 conditions per place. [2023-08-29 19:44:55,224 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 82 selfloop transitions, 180 changer transitions 47/309 dead transitions. [2023-08-29 19:44:55,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 309 transitions, 6865 flow [2023-08-29 19:44:55,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-29 19:44:55,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-29 19:44:55,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1779 transitions. [2023-08-29 19:44:55,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4575617283950617 [2023-08-29 19:44:55,228 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1779 transitions. [2023-08-29 19:44:55,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1779 transitions. [2023-08-29 19:44:55,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:55,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1779 transitions. [2023-08-29 19:44:55,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 65.88888888888889) internal successors, (1779), 27 states have internal predecessors, (1779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:55,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 144.0) internal successors, (4032), 28 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:55,239 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 144.0) internal successors, (4032), 28 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:55,239 INFO L175 Difference]: Start difference. First operand has 157 places, 161 transitions, 2716 flow. Second operand 27 states and 1779 transitions. [2023-08-29 19:44:55,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 309 transitions, 6865 flow [2023-08-29 19:44:55,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 309 transitions, 4998 flow, removed 912 selfloop flow, removed 9 redundant places. [2023-08-29 19:44:55,559 INFO L231 Difference]: Finished difference. Result has 187 places, 226 transitions, 3907 flow [2023-08-29 19:44:55,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3907, PETRI_PLACES=187, PETRI_TRANSITIONS=226} [2023-08-29 19:44:55,560 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 163 predicate places. [2023-08-29 19:44:55,560 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 226 transitions, 3907 flow [2023-08-29 19:44:55,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 62.48) internal successors, (1562), 25 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:55,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:55,561 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:44:55,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-29 19:44:55,767 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,SelfDestructingSolverStorable15 [2023-08-29 19:44:55,767 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)] === [2023-08-29 19:44:55,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:55,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1665604867, now seen corresponding path program 9 times [2023-08-29 19:44:55,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:55,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464032859] [2023-08-29 19:44:55,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:55,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:55,924 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:44:55,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:55,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464032859] [2023-08-29 19:44:55,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464032859] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:44:55,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104556961] [2023-08-29 19:44:55,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 19:44:55,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:44:55,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:44:55,929 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:44:55,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-29 19:44:56,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-29 19:44:56,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:44:56,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-29 19:44:56,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:44:56,053 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:44:56,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:44:56,206 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:44:56,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104556961] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:44:56,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:44:56,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-08-29 19:44:56,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129385069] [2023-08-29 19:44:56,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:44:56,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-29 19:44:56,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:56,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-29 19:44:56,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2023-08-29 19:44:56,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:44:56,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 226 transitions, 3907 flow. Second operand has 25 states, 25 states have (on average 62.44) internal successors, (1561), 25 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:56,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:56,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:44:56,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:57,729 INFO L130 PetriNetUnfolder]: 1416/2591 cut-off events. [2023-08-29 19:44:57,730 INFO L131 PetriNetUnfolder]: For 172910/172910 co-relation queries the response was YES. [2023-08-29 19:44:57,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25113 conditions, 2591 events. 1416/2591 cut-off events. For 172910/172910 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 14671 event pairs, 30 based on Foata normal form. 48/2639 useless extension candidates. Maximal degree in co-relation 25032. Up to 998 conditions per place. [2023-08-29 19:44:57,766 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 89 selfloop transitions, 325 changer transitions 74/488 dead transitions. [2023-08-29 19:44:57,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 488 transitions, 10356 flow [2023-08-29 19:44:57,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-29 19:44:57,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-29 19:44:57,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2643 transitions. [2023-08-29 19:44:57,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4588541666666667 [2023-08-29 19:44:57,771 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2643 transitions. [2023-08-29 19:44:57,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2643 transitions. [2023-08-29 19:44:57,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:57,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2643 transitions. [2023-08-29 19:44:57,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 66.075) internal successors, (2643), 40 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:57,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 144.0) internal successors, (5904), 41 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:57,783 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 144.0) internal successors, (5904), 41 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:57,783 INFO L175 Difference]: Start difference. First operand has 187 places, 226 transitions, 3907 flow. Second operand 40 states and 2643 transitions. [2023-08-29 19:44:57,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 488 transitions, 10356 flow [2023-08-29 19:44:58,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 488 transitions, 8943 flow, removed 656 selfloop flow, removed 9 redundant places. [2023-08-29 19:44:58,234 INFO L231 Difference]: Finished difference. Result has 236 places, 378 transitions, 7698 flow [2023-08-29 19:44:58,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=3363, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=7698, PETRI_PLACES=236, PETRI_TRANSITIONS=378} [2023-08-29 19:44:58,235 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 212 predicate places. [2023-08-29 19:44:58,235 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 378 transitions, 7698 flow [2023-08-29 19:44:58,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 62.44) internal successors, (1561), 25 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:58,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:58,237 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:44:58,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-29 19:44:58,442 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,SelfDestructingSolverStorable16 [2023-08-29 19:44:58,443 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)] === [2023-08-29 19:44:58,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:58,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1076313209, now seen corresponding path program 10 times [2023-08-29 19:44:58,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:58,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521247731] [2023-08-29 19:44:58,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:58,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:58,849 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:44:58,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:58,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521247731] [2023-08-29 19:44:58,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521247731] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:44:58,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001884554] [2023-08-29 19:44:58,849 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 19:44:58,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:44:58,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:44:58,851 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:44:58,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-29 19:44:58,923 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 19:44:58,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:44:58,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-29 19:44:58,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:44:58,993 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:44:58,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:44:59,349 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:44:59,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001884554] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:44:59,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:44:59,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 26 [2023-08-29 19:44:59,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450835729] [2023-08-29 19:44:59,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:44:59,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-29 19:44:59,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:59,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-29 19:44:59,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=565, Unknown=0, NotChecked=0, Total=756 [2023-08-29 19:44:59,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:44:59,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 378 transitions, 7698 flow. Second operand has 28 states, 28 states have (on average 62.464285714285715) internal successors, (1749), 28 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:59,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:59,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:44:59,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:00,725 INFO L130 PetriNetUnfolder]: 1488/2735 cut-off events. [2023-08-29 19:45:00,725 INFO L131 PetriNetUnfolder]: For 254803/254803 co-relation queries the response was YES. [2023-08-29 19:45:00,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29542 conditions, 2735 events. 1488/2735 cut-off events. For 254803/254803 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 15592 event pairs, 573 based on Foata normal form. 32/2767 useless extension candidates. Maximal degree in co-relation 29441. Up to 2353 conditions per place. [2023-08-29 19:45:00,764 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 387 selfloop transitions, 47 changer transitions 51/485 dead transitions. [2023-08-29 19:45:00,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 485 transitions, 11076 flow [2023-08-29 19:45:00,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-29 19:45:00,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-29 19:45:00,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1839 transitions. [2023-08-29 19:45:00,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45610119047619047 [2023-08-29 19:45:00,768 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1839 transitions. [2023-08-29 19:45:00,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1839 transitions. [2023-08-29 19:45:00,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:00,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1839 transitions. [2023-08-29 19:45:00,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 65.67857142857143) internal successors, (1839), 28 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:00,778 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) [2023-08-29 19:45:00,779 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) [2023-08-29 19:45:00,779 INFO L175 Difference]: Start difference. First operand has 236 places, 378 transitions, 7698 flow. Second operand 28 states and 1839 transitions. [2023-08-29 19:45:00,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 485 transitions, 11076 flow [2023-08-29 19:45:01,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 485 transitions, 8606 flow, removed 1205 selfloop flow, removed 8 redundant places. [2023-08-29 19:45:01,469 INFO L231 Difference]: Finished difference. Result has 267 places, 396 transitions, 6573 flow [2023-08-29 19:45:01,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=5816, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=6573, PETRI_PLACES=267, PETRI_TRANSITIONS=396} [2023-08-29 19:45:01,470 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 243 predicate places. [2023-08-29 19:45:01,470 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 396 transitions, 6573 flow [2023-08-29 19:45:01,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 62.464285714285715) internal successors, (1749), 28 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:01,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:01,471 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:01,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:01,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:01,672 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)] === [2023-08-29 19:45:01,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:01,672 INFO L85 PathProgramCache]: Analyzing trace with hash 763683891, now seen corresponding path program 11 times [2023-08-29 19:45:01,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:01,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087550904] [2023-08-29 19:45:01,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:01,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:01,999 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:02,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:02,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087550904] [2023-08-29 19:45:02,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087550904] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:45:02,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978115143] [2023-08-29 19:45:02,000 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 19:45:02,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:02,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:45:02,005 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) [2023-08-29 19:45:02,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-29 19:45:02,079 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-08-29 19:45:02,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:02,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-29 19:45:02,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:02,171 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:02,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:02,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978115143] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:02,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:45:02,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 28 [2023-08-29 19:45:02,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050759653] [2023-08-29 19:45:02,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:02,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-29 19:45:02,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:02,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-29 19:45:02,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2023-08-29 19:45:02,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:02,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 396 transitions, 6573 flow. Second operand has 30 states, 30 states have (on average 62.5) internal successors, (1875), 30 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:02,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:02,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:02,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:04,025 INFO L130 PetriNetUnfolder]: 1768/3295 cut-off events. [2023-08-29 19:45:04,026 INFO L131 PetriNetUnfolder]: For 359848/359848 co-relation queries the response was YES. [2023-08-29 19:45:04,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31643 conditions, 3295 events. 1768/3295 cut-off events. For 359848/359848 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 19506 event pairs, 426 based on Foata normal form. 32/3327 useless extension candidates. Maximal degree in co-relation 31529. Up to 1733 conditions per place. [2023-08-29 19:45:04,078 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 343 selfloop transitions, 198 changer transitions 63/604 dead transitions. [2023-08-29 19:45:04,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 604 transitions, 11084 flow [2023-08-29 19:45:04,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-29 19:45:04,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-29 19:45:04,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2236 transitions. [2023-08-29 19:45:04,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45669934640522875 [2023-08-29 19:45:04,091 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2236 transitions. [2023-08-29 19:45:04,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2236 transitions. [2023-08-29 19:45:04,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:04,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2236 transitions. [2023-08-29 19:45:04,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 65.76470588235294) internal successors, (2236), 34 states have internal predecessors, (2236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:04,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 144.0) internal successors, (5040), 35 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:04,105 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 144.0) internal successors, (5040), 35 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:04,105 INFO L175 Difference]: Start difference. First operand has 267 places, 396 transitions, 6573 flow. Second operand 34 states and 2236 transitions. [2023-08-29 19:45:04,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 604 transitions, 11084 flow [2023-08-29 19:45:04,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 604 transitions, 10545 flow, removed 241 selfloop flow, removed 15 redundant places. [2023-08-29 19:45:04,867 INFO L231 Difference]: Finished difference. Result has 297 places, 466 transitions, 8193 flow [2023-08-29 19:45:04,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=6070, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=8193, PETRI_PLACES=297, PETRI_TRANSITIONS=466} [2023-08-29 19:45:04,868 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 273 predicate places. [2023-08-29 19:45:04,868 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 466 transitions, 8193 flow [2023-08-29 19:45:04,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 62.5) internal successors, (1875), 30 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:04,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:04,869 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:04,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:05,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:05,075 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)] === [2023-08-29 19:45:05,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:05,075 INFO L85 PathProgramCache]: Analyzing trace with hash -2072400751, now seen corresponding path program 12 times [2023-08-29 19:45:05,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:05,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918262866] [2023-08-29 19:45:05,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:05,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:05,435 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:05,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:05,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918262866] [2023-08-29 19:45:05,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918262866] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:45:05,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68563787] [2023-08-29 19:45:05,436 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 19:45:05,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:05,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:45:05,437 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) [2023-08-29 19:45:05,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-29 19:45:05,520 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2023-08-29 19:45:05,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:05,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-29 19:45:05,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:05,590 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:05,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:05,904 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:05,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68563787] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:05,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:45:05,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 30 [2023-08-29 19:45:05,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690510196] [2023-08-29 19:45:05,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:05,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-29 19:45:05,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:05,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-29 19:45:05,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=805, Unknown=0, NotChecked=0, Total=992 [2023-08-29 19:45:06,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:06,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 466 transitions, 8193 flow. Second operand has 32 states, 32 states have (on average 62.40625) internal successors, (1997), 32 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:06,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:06,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:06,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:07,661 INFO L130 PetriNetUnfolder]: 2332/4419 cut-off events. [2023-08-29 19:45:07,661 INFO L131 PetriNetUnfolder]: For 553516/553516 co-relation queries the response was YES. [2023-08-29 19:45:07,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45067 conditions, 4419 events. 2332/4419 cut-off events. For 553516/553516 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 28206 event pairs, 135 based on Foata normal form. 32/4451 useless extension candidates. Maximal degree in co-relation 44941. Up to 1230 conditions per place. [2023-08-29 19:45:07,711 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 197 selfloop transitions, 497 changer transitions 73/767 dead transitions. [2023-08-29 19:45:07,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 767 transitions, 15133 flow [2023-08-29 19:45:07,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-29 19:45:07,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-29 19:45:07,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2565 transitions. [2023-08-29 19:45:07,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567307692307692 [2023-08-29 19:45:07,716 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2565 transitions. [2023-08-29 19:45:07,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2565 transitions. [2023-08-29 19:45:07,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:07,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2565 transitions. [2023-08-29 19:45:07,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 65.76923076923077) internal successors, (2565), 39 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:07,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 144.0) internal successors, (5760), 40 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:07,726 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 144.0) internal successors, (5760), 40 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:07,727 INFO L175 Difference]: Start difference. First operand has 297 places, 466 transitions, 8193 flow. Second operand 39 states and 2565 transitions. [2023-08-29 19:45:07,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 767 transitions, 15133 flow [2023-08-29 19:45:09,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 767 transitions, 14122 flow, removed 424 selfloop flow, removed 19 redundant places. [2023-08-29 19:45:09,463 INFO L231 Difference]: Finished difference. Result has 334 places, 616 transitions, 12066 flow [2023-08-29 19:45:09,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=7412, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=365, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=12066, PETRI_PLACES=334, PETRI_TRANSITIONS=616} [2023-08-29 19:45:09,464 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 310 predicate places. [2023-08-29 19:45:09,464 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 616 transitions, 12066 flow [2023-08-29 19:45:09,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 62.40625) internal successors, (1997), 32 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:09,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:09,465 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:09,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-29 19:45:09,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:09,667 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)] === [2023-08-29 19:45:09,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:09,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1504954729, now seen corresponding path program 13 times [2023-08-29 19:45:09,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:09,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146287958] [2023-08-29 19:45:09,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:09,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:09,996 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:09,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:09,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146287958] [2023-08-29 19:45:09,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146287958] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:45:09,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559043996] [2023-08-29 19:45:09,996 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-29 19:45:09,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:09,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:45:09,998 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) [2023-08-29 19:45:10,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-29 19:45:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:10,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-29 19:45:10,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:10,178 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:10,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:10,489 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:10,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559043996] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:10,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:45:10,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 33 [2023-08-29 19:45:10,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796820221] [2023-08-29 19:45:10,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:10,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-29 19:45:10,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:10,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-29 19:45:10,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1000, Unknown=0, NotChecked=0, Total=1190 [2023-08-29 19:45:10,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:10,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 616 transitions, 12066 flow. Second operand has 35 states, 35 states have (on average 62.457142857142856) internal successors, (2186), 35 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:10,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:10,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:10,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:13,021 INFO L130 PetriNetUnfolder]: 2724/5127 cut-off events. [2023-08-29 19:45:13,022 INFO L131 PetriNetUnfolder]: For 793653/793653 co-relation queries the response was YES. [2023-08-29 19:45:13,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57506 conditions, 5127 events. 2724/5127 cut-off events. For 793653/793653 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 33377 event pairs, 36 based on Foata normal form. 32/5159 useless extension candidates. Maximal degree in co-relation 57361. Up to 1438 conditions per place. [2023-08-29 19:45:13,104 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 144 selfloop transitions, 651 changer transitions 83/878 dead transitions. [2023-08-29 19:45:13,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 878 transitions, 19212 flow [2023-08-29 19:45:13,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-08-29 19:45:13,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-08-29 19:45:13,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 2962 transitions. [2023-08-29 19:45:13,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45709876543209876 [2023-08-29 19:45:13,109 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 2962 transitions. [2023-08-29 19:45:13,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 2962 transitions. [2023-08-29 19:45:13,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:13,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 2962 transitions. [2023-08-29 19:45:13,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 65.82222222222222) internal successors, (2962), 45 states have internal predecessors, (2962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:13,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 144.0) internal successors, (6624), 46 states have internal predecessors, (6624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:13,124 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 144.0) internal successors, (6624), 46 states have internal predecessors, (6624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:13,124 INFO L175 Difference]: Start difference. First operand has 334 places, 616 transitions, 12066 flow. Second operand 45 states and 2962 transitions. [2023-08-29 19:45:13,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 878 transitions, 19212 flow [2023-08-29 19:45:15,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 878 transitions, 17310 flow, removed 888 selfloop flow, removed 14 redundant places. [2023-08-29 19:45:15,763 INFO L231 Difference]: Finished difference. Result has 381 places, 717 transitions, 14834 flow [2023-08-29 19:45:15,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=10788, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=564, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=14834, PETRI_PLACES=381, PETRI_TRANSITIONS=717} [2023-08-29 19:45:15,765 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 357 predicate places. [2023-08-29 19:45:15,765 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 717 transitions, 14834 flow [2023-08-29 19:45:15,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 62.457142857142856) internal successors, (2186), 35 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:15,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:15,766 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:15,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:15,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-29 19:45:15,971 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)] === [2023-08-29 19:45:15,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:15,971 INFO L85 PathProgramCache]: Analyzing trace with hash -149829581, now seen corresponding path program 14 times [2023-08-29 19:45:15,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:15,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401193589] [2023-08-29 19:45:15,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:15,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:16,284 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:16,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:16,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401193589] [2023-08-29 19:45:16,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401193589] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:45:16,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897853389] [2023-08-29 19:45:16,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 19:45:16,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:16,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:45:16,289 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:45:16,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-29 19:45:16,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 19:45:16,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:16,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-29 19:45:16,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:16,534 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:16,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:16,778 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:16,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897853389] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:16,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:45:16,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 27 [2023-08-29 19:45:16,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136444730] [2023-08-29 19:45:16,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:16,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-29 19:45:16,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:16,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-29 19:45:16,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2023-08-29 19:45:16,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:16,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 717 transitions, 14834 flow. Second operand has 29 states, 29 states have (on average 62.44827586206897) internal successors, (1811), 29 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:16,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:16,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:16,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:19,618 INFO L130 PetriNetUnfolder]: 2904/5431 cut-off events. [2023-08-29 19:45:19,618 INFO L131 PetriNetUnfolder]: For 973719/973719 co-relation queries the response was YES. [2023-08-29 19:45:19,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65390 conditions, 5431 events. 2904/5431 cut-off events. For 973719/973719 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 35254 event pairs, 18 based on Foata normal form. 32/5463 useless extension candidates. Maximal degree in co-relation 65229. Up to 1530 conditions per place. [2023-08-29 19:45:19,703 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 141 selfloop transitions, 710 changer transitions 91/942 dead transitions. [2023-08-29 19:45:19,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 942 transitions, 22197 flow [2023-08-29 19:45:19,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-08-29 19:45:19,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-08-29 19:45:19,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 3425 transitions. [2023-08-29 19:45:19,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45739850427350426 [2023-08-29 19:45:19,709 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 3425 transitions. [2023-08-29 19:45:19,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 3425 transitions. [2023-08-29 19:45:19,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:19,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 3425 transitions. [2023-08-29 19:45:19,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 65.86538461538461) internal successors, (3425), 52 states have internal predecessors, (3425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:19,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 144.0) internal successors, (7632), 53 states have internal predecessors, (7632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:19,725 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 144.0) internal successors, (7632), 53 states have internal predecessors, (7632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:19,725 INFO L175 Difference]: Start difference. First operand has 381 places, 717 transitions, 14834 flow. Second operand 52 states and 3425 transitions. [2023-08-29 19:45:19,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 942 transitions, 22197 flow [2023-08-29 19:45:22,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 942 transitions, 20659 flow, removed 635 selfloop flow, removed 19 redundant places. [2023-08-29 19:45:22,738 INFO L231 Difference]: Finished difference. Result has 429 places, 759 transitions, 16868 flow [2023-08-29 19:45:22,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=13308, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=669, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=16868, PETRI_PLACES=429, PETRI_TRANSITIONS=759} [2023-08-29 19:45:22,739 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 405 predicate places. [2023-08-29 19:45:22,739 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 759 transitions, 16868 flow [2023-08-29 19:45:22,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 62.44827586206897) internal successors, (1811), 29 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:22,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:22,739 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:22,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:22,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-29 19:45:22,941 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)] === [2023-08-29 19:45:22,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:22,941 INFO L85 PathProgramCache]: Analyzing trace with hash 588389757, now seen corresponding path program 15 times [2023-08-29 19:45:22,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:22,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228724383] [2023-08-29 19:45:22,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:22,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:23,263 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:23,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:23,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228724383] [2023-08-29 19:45:23,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228724383] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:45:23,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976031915] [2023-08-29 19:45:23,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 19:45:23,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:23,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:45:23,265 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:45:23,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-29 19:45:23,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-08-29 19:45:23,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:23,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-29 19:45:23,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:23,409 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:23,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:23,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976031915] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:23,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:45:23,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 23 [2023-08-29 19:45:23,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447728779] [2023-08-29 19:45:23,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:23,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-29 19:45:23,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:23,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-29 19:45:23,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2023-08-29 19:45:23,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:23,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 759 transitions, 16868 flow. Second operand has 25 states, 25 states have (on average 62.2) internal successors, (1555), 25 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:23,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:23,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:23,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:26,556 INFO L130 PetriNetUnfolder]: 2996/5603 cut-off events. [2023-08-29 19:45:26,557 INFO L131 PetriNetUnfolder]: For 1293938/1293938 co-relation queries the response was YES. [2023-08-29 19:45:26,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75111 conditions, 5603 events. 2996/5603 cut-off events. For 1293938/1293938 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 36219 event pairs, 78 based on Foata normal form. 8/5611 useless extension candidates. Maximal degree in co-relation 74936. Up to 1594 conditions per place. [2023-08-29 19:45:26,630 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 131 selfloop transitions, 698 changer transitions 80/909 dead transitions. [2023-08-29 19:45:26,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 909 transitions, 23206 flow [2023-08-29 19:45:26,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-08-29 19:45:26,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-08-29 19:45:26,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2825 transitions. [2023-08-29 19:45:26,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.456233850129199 [2023-08-29 19:45:26,636 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2825 transitions. [2023-08-29 19:45:26,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2825 transitions. [2023-08-29 19:45:26,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:26,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2825 transitions. [2023-08-29 19:45:26,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 65.69767441860465) internal successors, (2825), 43 states have internal predecessors, (2825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:26,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 144.0) internal successors, (6336), 44 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:26,645 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 144.0) internal successors, (6336), 44 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:26,645 INFO L175 Difference]: Start difference. First operand has 429 places, 759 transitions, 16868 flow. Second operand 43 states and 2825 transitions. [2023-08-29 19:45:26,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 909 transitions, 23206 flow [2023-08-29 19:45:31,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 909 transitions, 20316 flow, removed 991 selfloop flow, removed 34 redundant places. [2023-08-29 19:45:31,134 INFO L231 Difference]: Finished difference. Result has 444 places, 782 transitions, 16752 flow [2023-08-29 19:45:31,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=14650, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=675, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=16752, PETRI_PLACES=444, PETRI_TRANSITIONS=782} [2023-08-29 19:45:31,135 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 420 predicate places. [2023-08-29 19:45:31,135 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 782 transitions, 16752 flow [2023-08-29 19:45:31,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 62.2) internal successors, (1555), 25 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:31,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:31,136 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:31,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:31,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-29 19:45:31,336 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)] === [2023-08-29 19:45:31,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:31,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1087695521, now seen corresponding path program 16 times [2023-08-29 19:45:31,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:31,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257590052] [2023-08-29 19:45:31,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:31,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:31,488 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 90 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:31,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:31,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257590052] [2023-08-29 19:45:31,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257590052] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:45:31,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651940967] [2023-08-29 19:45:31,489 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 19:45:31,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:31,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:45:31,491 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:45:31,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-29 19:45:31,563 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 19:45:31,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:31,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-29 19:45:31,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:31,606 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:31,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 19:45:31,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651940967] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:31,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 19:45:31,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 14 [2023-08-29 19:45:31,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923332286] [2023-08-29 19:45:31,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:31,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 19:45:31,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:31,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 19:45:31,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2023-08-29 19:45:31,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 144 [2023-08-29 19:45:31,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 782 transitions, 16752 flow. Second operand has 13 states, 13 states have (on average 66.23076923076923) internal successors, (861), 13 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:31,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:31,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 144 [2023-08-29 19:45:31,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:38,849 INFO L130 PetriNetUnfolder]: 13313/21229 cut-off events. [2023-08-29 19:45:38,849 INFO L131 PetriNetUnfolder]: For 5528072/5528072 co-relation queries the response was YES. [2023-08-29 19:45:39,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264424 conditions, 21229 events. 13313/21229 cut-off events. For 5528072/5528072 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 147193 event pairs, 271 based on Foata normal form. 1224/22453 useless extension candidates. Maximal degree in co-relation 264243. Up to 10646 conditions per place. [2023-08-29 19:45:39,169 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 0 selfloop transitions, 0 changer transitions 3884/3884 dead transitions. [2023-08-29 19:45:39,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 3884 transitions, 88780 flow [2023-08-29 19:45:39,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-29 19:45:39,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-29 19:45:39,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 929 transitions. [2023-08-29 19:45:39,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962606837606838 [2023-08-29 19:45:39,171 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 929 transitions. [2023-08-29 19:45:39,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 929 transitions. [2023-08-29 19:45:39,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:39,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 929 transitions. [2023-08-29 19:45:39,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 71.46153846153847) internal successors, (929), 13 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:39,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 144.0) internal successors, (2016), 14 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:39,174 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 144.0) internal successors, (2016), 14 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:39,175 INFO L175 Difference]: Start difference. First operand has 444 places, 782 transitions, 16752 flow. Second operand 13 states and 929 transitions. [2023-08-29 19:45:39,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 3884 transitions, 88780 flow [2023-08-29 19:45:44,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 3884 transitions, 80854 flow, removed 399 selfloop flow, removed 43 redundant places. [2023-08-29 19:45:44,383 INFO L231 Difference]: Finished difference. Result has 407 places, 0 transitions, 0 flow [2023-08-29 19:45:44,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=14129, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=743, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=407, PETRI_TRANSITIONS=0} [2023-08-29 19:45:44,383 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 383 predicate places. [2023-08-29 19:45:44,384 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 0 transitions, 0 flow [2023-08-29 19:45:44,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 66.23076923076923) internal successors, (861), 13 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:44,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 8 remaining) [2023-08-29 19:45:44,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-08-29 19:45:44,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-08-29 19:45:44,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-08-29 19:45:44,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2023-08-29 19:45:44,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-08-29 19:45:44,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-08-29 19:45:44,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-08-29 19:45:44,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:44,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-29 19:45:44,591 INFO L445 BasicCegarLoop]: Path program histogram: [16, 2, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:44,594 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 19:45:44,594 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 19:45:44,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 07:45:44 BasicIcfg [2023-08-29 19:45:44,597 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 19:45:44,598 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 19:45:44,598 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 19:45:44,598 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 19:45:44,598 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:44:44" (3/4) ... [2023-08-29 19:45:44,601 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 19:45:44,606 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-08-29 19:45:44,606 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-08-29 19:45:44,609 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-08-29 19:45:44,609 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-29 19:45:44,609 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 19:45:44,609 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-29 19:45:44,634 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 19:45:44,634 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 19:45:44,634 INFO L158 Benchmark]: Toolchain (without parser) took 61148.06ms. Allocated memory was 79.7MB in the beginning and 9.0GB in the end (delta: 8.9GB). Free memory was 56.0MB in the beginning and 7.5GB in the end (delta: -7.4GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2023-08-29 19:45:44,635 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 60.8MB. Free memory is still 38.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 19:45:44,635 INFO L158 Benchmark]: CACSL2BoogieTranslator took 518.54ms. Allocated memory is still 79.7MB. Free memory was 55.7MB in the beginning and 36.6MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-08-29 19:45:44,635 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.69ms. Allocated memory is still 79.7MB. Free memory was 36.4MB in the beginning and 58.0MB in the end (delta: -21.6MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. [2023-08-29 19:45:44,636 INFO L158 Benchmark]: Boogie Preprocessor took 46.82ms. Allocated memory is still 79.7MB. Free memory was 58.0MB in the beginning and 56.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 19:45:44,636 INFO L158 Benchmark]: RCFGBuilder took 423.45ms. Allocated memory is still 79.7MB. Free memory was 56.4MB in the beginning and 43.4MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-29 19:45:44,636 INFO L158 Benchmark]: TraceAbstraction took 60059.41ms. Allocated memory was 79.7MB in the beginning and 9.0GB in the end (delta: 8.9GB). Free memory was 42.6MB in the beginning and 7.5GB in the end (delta: -7.4GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2023-08-29 19:45:44,636 INFO L158 Benchmark]: Witness Printer took 36.55ms. Allocated memory is still 9.0GB. Free memory was 7.5GB in the beginning and 7.5GB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 19:45:44,638 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 60.8MB. Free memory is still 38.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 518.54ms. Allocated memory is still 79.7MB. Free memory was 55.7MB in the beginning and 36.6MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.69ms. Allocated memory is still 79.7MB. Free memory was 36.4MB in the beginning and 58.0MB in the end (delta: -21.6MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.82ms. Allocated memory is still 79.7MB. Free memory was 58.0MB in the beginning and 56.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 423.45ms. Allocated memory is still 79.7MB. Free memory was 56.4MB in the beginning and 43.4MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 60059.41ms. Allocated memory was 79.7MB in the beginning and 9.0GB in the end (delta: 8.9GB). Free memory was 42.6MB in the beginning and 7.5GB in the end (delta: -7.4GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. * Witness Printer took 36.55ms. Allocated memory is still 9.0GB. Free memory was 7.5GB in the beginning and 7.5GB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 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 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 722]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 711]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - 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: 59.9s, OverallIterations: 24, TraceHistogramMax: 11, PathProgramHistogramMax: 16, EmptinessCheckTime: 0.0s, AutomataDifference: 46.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5290 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5054 mSDsluCounter, 901 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 827 mSDsCounter, 461 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6041 IncrementalHoareTripleChecker+Invalid, 6502 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 461 mSolverCounterUnsat, 74 mSDtfsCounter, 6041 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1050 GetRequests, 326 SyntacticMatches, 67 SemanticMatches, 657 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9814 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16868occurred in iteration=22, InterpolantAutomatonStates: 455, 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, 0.5s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 622 NumberOfCodeBlocks, 619 NumberOfCodeBlocksAsserted, 78 NumberOfCheckSat, 818 ConstructedInterpolants, 0 QuantifiedInterpolants, 3740 SizeOfPredicates, 141 NumberOfNonLiveVariables, 2274 ConjunctsInSsa, 227 ConjunctsInUnsatCore, 49 InterpolantComputations, 12 PerfectInterpolantSequences, 217/1727 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 - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 19:45:44,656 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: TRUE