./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --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 5ac72ff2379990464c5f55660be1e08b12557a61aceeef8401296ef66be035fc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:10:06,951 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:10:07,046 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:10:07,050 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:10:07,051 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:10:07,080 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:10:07,081 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:10:07,081 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:10:07,082 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:10:07,083 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:10:07,083 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:10:07,083 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:10:07,084 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:10:07,084 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:10:07,085 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:10:07,085 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:10:07,086 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:10:07,086 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:10:07,086 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:10:07,087 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:10:07,087 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:10:07,088 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:10:07,088 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:10:07,089 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:10:07,089 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:10:07,089 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:10:07,090 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:10:07,090 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:10:07,090 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:10:07,091 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:10:07,091 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:10:07,091 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:10:07,092 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:10:07,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:10:07,093 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:10:07,093 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:10:07,093 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:10:07,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:10:07,094 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:10:07,094 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:10:07,095 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:10:07,095 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:10:07,096 INFO L153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ac72ff2379990464c5f55660be1e08b12557a61aceeef8401296ef66be035fc [2024-11-10 18:10:07,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:10:07,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:10:07,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:10:07,471 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:10:07,472 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:10:07,474 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i [2024-11-10 18:10:09,131 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:10:09,561 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:10:09,561 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i [2024-11-10 18:10:09,590 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa31c58b7/0f74277b881e4ff7967b1b40e9e537b0/FLAG20a8f03ed [2024-11-10 18:10:09,613 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa31c58b7/0f74277b881e4ff7967b1b40e9e537b0 [2024-11-10 18:10:09,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:10:09,620 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:10:09,621 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:10:09,621 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:10:09,628 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:10:09,629 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:10:09" (1/1) ... [2024-11-10 18:10:09,630 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65fbc279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:09, skipping insertion in model container [2024-11-10 18:10:09,630 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:10:09" (1/1) ... [2024-11-10 18:10:09,687 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:10:10,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:10:10,185 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:10:10,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:10:10,315 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:10:10,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:10 WrapperNode [2024-11-10 18:10:10,317 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:10:10,318 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:10:10,318 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:10:10,318 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:10:10,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:10" (1/1) ... [2024-11-10 18:10:10,343 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:10" (1/1) ... [2024-11-10 18:10:10,378 INFO L138 Inliner]: procedures = 272, calls = 65, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 218 [2024-11-10 18:10:10,379 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:10:10,379 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:10:10,380 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:10:10,380 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:10:10,391 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:10" (1/1) ... [2024-11-10 18:10:10,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:10" (1/1) ... [2024-11-10 18:10:10,401 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:10" (1/1) ... [2024-11-10 18:10:10,443 INFO L175 MemorySlicer]: Split 35 memory accesses to 4 slices as follows [2, 2, 5, 26]. 74 percent of accesses are in the largest equivalence class. The 23 initializations are split as follows [2, 0, 5, 16]. The 5 writes are split as follows [0, 1, 0, 4]. [2024-11-10 18:10:10,443 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:10" (1/1) ... [2024-11-10 18:10:10,443 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:10" (1/1) ... [2024-11-10 18:10:10,458 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:10" (1/1) ... [2024-11-10 18:10:10,459 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:10" (1/1) ... [2024-11-10 18:10:10,461 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:10" (1/1) ... [2024-11-10 18:10:10,463 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:10" (1/1) ... [2024-11-10 18:10:10,469 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:10:10,474 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:10:10,475 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:10:10,475 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:10:10,476 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:10" (1/1) ... [2024-11-10 18:10:10,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:10:10,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:10:10,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 18:10:10,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 18:10:10,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 18:10:10,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 18:10:10,598 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 18:10:10,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 18:10:10,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 18:10:10,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 18:10:10,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 18:10:10,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 18:10:10,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 18:10:10,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 18:10:10,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 18:10:10,601 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 18:10:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:10:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-10 18:10:10,602 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-10 18:10:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 18:10:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 18:10:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 18:10:10,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 18:10:10,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:10:10,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:10:10,605 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 18:10:10,796 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:10:10,799 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:10:11,142 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1036: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-10 18:10:11,142 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1036-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-10 18:10:11,252 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:10:11,256 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:10:11,541 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:10:11,541 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:10:11,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:10:11 BoogieIcfgContainer [2024-11-10 18:10:11,543 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:10:11,546 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:10:11,589 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:10:11,597 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:10:11,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:10:09" (1/3) ... [2024-11-10 18:10:11,599 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f48122f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:10:11, skipping insertion in model container [2024-11-10 18:10:11,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:10" (2/3) ... [2024-11-10 18:10:11,599 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f48122f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:10:11, skipping insertion in model container [2024-11-10 18:10:11,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:10:11" (3/3) ... [2024-11-10 18:10:11,600 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_79-equ_racefree.i [2024-11-10 18:10:11,628 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:10:11,628 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2024-11-10 18:10:11,628 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:10:11,689 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-10 18:10:11,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 150 transitions, 307 flow [2024-11-10 18:10:11,820 INFO L124 PetriNetUnfolderBase]: 45/230 cut-off events. [2024-11-10 18:10:11,820 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 18:10:11,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 230 events. 45/230 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1127 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 143. Up to 8 conditions per place. [2024-11-10 18:10:11,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 150 transitions, 307 flow [2024-11-10 18:10:11,840 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 150 transitions, 307 flow [2024-11-10 18:10:11,850 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:10:11,856 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@14609c7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:10:11,856 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-11-10 18:10:11,861 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:10:11,861 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-10 18:10:11,861 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:10:11,862 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:10:11,863 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:10:11,863 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-10 18:10:11,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:10:11,870 INFO L85 PathProgramCache]: Analyzing trace with hash 17829369, now seen corresponding path program 1 times [2024-11-10 18:10:11,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:10:11,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768243138] [2024-11-10 18:10:11,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:10:11,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:10:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:10:12,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:10:12,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:10:12,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768243138] [2024-11-10 18:10:12,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768243138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:10:12,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:10:12,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:10:12,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240764566] [2024-11-10 18:10:12,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:10:12,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:10:12,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:10:12,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:10:12,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:10:12,281 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 150 [2024-11-10 18:10:12,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 150 transitions, 307 flow. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:12,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:10:12,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 150 [2024-11-10 18:10:12,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:10:12,805 INFO L124 PetriNetUnfolderBase]: 504/1885 cut-off events. [2024-11-10 18:10:12,807 INFO L125 PetriNetUnfolderBase]: For 4/5 co-relation queries the response was YES. [2024-11-10 18:10:12,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2892 conditions, 1885 events. 504/1885 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 15085 event pairs, 437 based on Foata normal form. 549/2153 useless extension candidates. Maximal degree in co-relation 2780. Up to 958 conditions per place. [2024-11-10 18:10:12,832 INFO L140 encePairwiseOnDemand]: 120/150 looper letters, 58 selfloop transitions, 3 changer transitions 8/142 dead transitions. [2024-11-10 18:10:12,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 142 transitions, 429 flow [2024-11-10 18:10:12,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:10:12,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:10:12,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2024-11-10 18:10:12,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7266666666666667 [2024-11-10 18:10:12,853 INFO L175 Difference]: Start difference. First operand has 123 places, 150 transitions, 307 flow. Second operand 3 states and 327 transitions. [2024-11-10 18:10:12,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 142 transitions, 429 flow [2024-11-10 18:10:12,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 142 transitions, 429 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:10:12,866 INFO L231 Difference]: Finished difference. Result has 124 places, 121 transitions, 260 flow [2024-11-10 18:10:12,868 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=124, PETRI_TRANSITIONS=121} [2024-11-10 18:10:12,873 INFO L277 CegarLoopForPetriNet]: 123 programPoint places, 1 predicate places. [2024-11-10 18:10:12,873 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 121 transitions, 260 flow [2024-11-10 18:10:12,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:12,875 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:10:12,875 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-10 18:10:12,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:10:12,875 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-10 18:10:12,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:10:12,876 INFO L85 PathProgramCache]: Analyzing trace with hash 552634808, now seen corresponding path program 1 times [2024-11-10 18:10:12,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:10:12,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458688937] [2024-11-10 18:10:12,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:10:12,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:10:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:10:13,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:10:13,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:10:13,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458688937] [2024-11-10 18:10:13,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458688937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:10:13,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:10:13,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:10:13,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747207154] [2024-11-10 18:10:13,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:10:13,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:10:13,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:10:13,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:10:13,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:10:13,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 150 [2024-11-10 18:10:13,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 121 transitions, 260 flow. Second operand has 3 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) [2024-11-10 18:10:13,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:10:13,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 150 [2024-11-10 18:10:13,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:10:13,424 INFO L124 PetriNetUnfolderBase]: 523/1926 cut-off events. [2024-11-10 18:10:13,425 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2024-11-10 18:10:13,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3018 conditions, 1926 events. 523/1926 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 15446 event pairs, 437 based on Foata normal form. 0/1703 useless extension candidates. Maximal degree in co-relation 2905. Up to 956 conditions per place. [2024-11-10 18:10:13,443 INFO L140 encePairwiseOnDemand]: 146/150 looper letters, 66 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2024-11-10 18:10:13,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 138 transitions, 430 flow [2024-11-10 18:10:13,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:10:13,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:10:13,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2024-11-10 18:10:13,450 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2024-11-10 18:10:13,450 INFO L175 Difference]: Start difference. First operand has 124 places, 121 transitions, 260 flow. Second operand 3 states and 280 transitions. [2024-11-10 18:10:13,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 138 transitions, 430 flow [2024-11-10 18:10:13,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 138 transitions, 419 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-10 18:10:13,461 INFO L231 Difference]: Finished difference. Result has 121 places, 119 transitions, 249 flow [2024-11-10 18:10:13,461 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=249, PETRI_PLACES=121, PETRI_TRANSITIONS=119} [2024-11-10 18:10:13,462 INFO L277 CegarLoopForPetriNet]: 123 programPoint places, -2 predicate places. [2024-11-10 18:10:13,463 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 119 transitions, 249 flow [2024-11-10 18:10:13,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2024-11-10 18:10:13,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:10:13,464 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-10 18:10:13,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:10:13,465 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-10 18:10:13,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:10:13,468 INFO L85 PathProgramCache]: Analyzing trace with hash 552634809, now seen corresponding path program 1 times [2024-11-10 18:10:13,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:10:13,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376898055] [2024-11-10 18:10:13,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:10:13,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:10:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:10:13,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:10:13,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:10:13,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376898055] [2024-11-10 18:10:13,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376898055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:10:13,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:10:13,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:10:13,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763850377] [2024-11-10 18:10:13,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:10:13,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:10:13,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:10:13,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:10:13,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:10:13,746 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 150 [2024-11-10 18:10:13,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 119 transitions, 249 flow. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:13,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:10:13,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 150 [2024-11-10 18:10:13,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:10:14,061 INFO L124 PetriNetUnfolderBase]: 515/1860 cut-off events. [2024-11-10 18:10:14,062 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-10 18:10:14,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2930 conditions, 1860 events. 515/1860 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 14990 event pairs, 0 based on Foata normal form. 1/1643 useless extension candidates. Maximal degree in co-relation 2876. Up to 1020 conditions per place. [2024-11-10 18:10:14,075 INFO L140 encePairwiseOnDemand]: 146/150 looper letters, 68 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2024-11-10 18:10:14,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 139 transitions, 429 flow [2024-11-10 18:10:14,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:10:14,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:10:14,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions. [2024-11-10 18:10:14,077 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-11-10 18:10:14,077 INFO L175 Difference]: Start difference. First operand has 121 places, 119 transitions, 249 flow. Second operand 3 states and 285 transitions. [2024-11-10 18:10:14,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 139 transitions, 429 flow [2024-11-10 18:10:14,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 139 transitions, 425 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:10:14,082 INFO L231 Difference]: Finished difference. Result has 122 places, 119 transitions, 255 flow [2024-11-10 18:10:14,083 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=255, PETRI_PLACES=122, PETRI_TRANSITIONS=119} [2024-11-10 18:10:14,083 INFO L277 CegarLoopForPetriNet]: 123 programPoint places, -1 predicate places. [2024-11-10 18:10:14,084 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 119 transitions, 255 flow [2024-11-10 18:10:14,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:14,085 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:10:14,085 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 18:10:14,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 18:10:14,085 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-10 18:10:14,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:10:14,086 INFO L85 PathProgramCache]: Analyzing trace with hash 429945211, now seen corresponding path program 1 times [2024-11-10 18:10:14,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:10:14,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408856386] [2024-11-10 18:10:14,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:10:14,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:10:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:10:14,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:10:14,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:10:14,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408856386] [2024-11-10 18:10:14,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408856386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:10:14,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187845820] [2024-11-10 18:10:14,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:10:14,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:10:14,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:10:14,292 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) [2024-11-10 18:10:14,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 18:10:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:10:14,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 18:10:14,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:10:14,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-10 18:10:14,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:10:14,574 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:10:14,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:10:14,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187845820] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:10:14,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:10:14,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-11-10 18:10:14,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220660369] [2024-11-10 18:10:14,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:10:14,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 18:10:14,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:10:14,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 18:10:14,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-10 18:10:14,879 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 150 [2024-11-10 18:10:14,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 119 transitions, 255 flow. Second operand has 9 states, 9 states have (on average 72.44444444444444) internal successors, (652), 9 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:14,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:10:14,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 150 [2024-11-10 18:10:14,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:10:15,044 INFO L124 PetriNetUnfolderBase]: 61/260 cut-off events. [2024-11-10 18:10:15,044 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-11-10 18:10:15,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 260 events. 61/260 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1177 event pairs, 36 based on Foata normal form. 40/276 useless extension candidates. Maximal degree in co-relation 428. Up to 117 conditions per place. [2024-11-10 18:10:15,046 INFO L140 encePairwiseOnDemand]: 146/150 looper letters, 44 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2024-11-10 18:10:15,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 78 transitions, 258 flow [2024-11-10 18:10:15,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:10:15,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:10:15,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 328 transitions. [2024-11-10 18:10:15,048 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5466666666666666 [2024-11-10 18:10:15,048 INFO L175 Difference]: Start difference. First operand has 122 places, 119 transitions, 255 flow. Second operand 4 states and 328 transitions. [2024-11-10 18:10:15,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 78 transitions, 258 flow [2024-11-10 18:10:15,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 78 transitions, 252 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:10:15,051 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 122 flow [2024-11-10 18:10:15,051 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2024-11-10 18:10:15,053 INFO L277 CegarLoopForPetriNet]: 123 programPoint places, -61 predicate places. [2024-11-10 18:10:15,053 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 122 flow [2024-11-10 18:10:15,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 72.44444444444444) internal successors, (652), 9 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:15,054 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:10:15,054 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-10 18:10:15,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 18:10:15,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:10:15,259 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-10 18:10:15,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:10:15,260 INFO L85 PathProgramCache]: Analyzing trace with hash 443400233, now seen corresponding path program 1 times [2024-11-10 18:10:15,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:10:15,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678272633] [2024-11-10 18:10:15,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:10:15,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:10:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:10:15,295 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 18:10:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:10:15,348 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 18:10:15,348 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 18:10:15,350 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (38 of 39 remaining) [2024-11-10 18:10:15,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (37 of 39 remaining) [2024-11-10 18:10:15,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 39 remaining) [2024-11-10 18:10:15,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 39 remaining) [2024-11-10 18:10:15,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 39 remaining) [2024-11-10 18:10:15,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 39 remaining) [2024-11-10 18:10:15,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 39 remaining) [2024-11-10 18:10:15,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 39 remaining) [2024-11-10 18:10:15,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 39 remaining) [2024-11-10 18:10:15,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 39 remaining) [2024-11-10 18:10:15,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 39 remaining) [2024-11-10 18:10:15,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 39 remaining) [2024-11-10 18:10:15,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 39 remaining) [2024-11-10 18:10:15,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 39 remaining) [2024-11-10 18:10:15,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 39 remaining) [2024-11-10 18:10:15,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 39 remaining) [2024-11-10 18:10:15,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK (22 of 39 remaining) [2024-11-10 18:10:15,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 39 remaining) [2024-11-10 18:10:15,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 39 remaining) [2024-11-10 18:10:15,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 39 remaining) [2024-11-10 18:10:15,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 39 remaining) [2024-11-10 18:10:15,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 39 remaining) [2024-11-10 18:10:15,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 39 remaining) [2024-11-10 18:10:15,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 39 remaining) [2024-11-10 18:10:15,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 39 remaining) [2024-11-10 18:10:15,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 39 remaining) [2024-11-10 18:10:15,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 39 remaining) [2024-11-10 18:10:15,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONMEMORY_LEAK (11 of 39 remaining) [2024-11-10 18:10:15,361 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 39 remaining) [2024-11-10 18:10:15,361 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 39 remaining) [2024-11-10 18:10:15,362 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 39 remaining) [2024-11-10 18:10:15,362 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 39 remaining) [2024-11-10 18:10:15,362 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 39 remaining) [2024-11-10 18:10:15,362 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 39 remaining) [2024-11-10 18:10:15,362 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 39 remaining) [2024-11-10 18:10:15,362 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 39 remaining) [2024-11-10 18:10:15,362 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 39 remaining) [2024-11-10 18:10:15,363 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 39 remaining) [2024-11-10 18:10:15,363 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 39 remaining) [2024-11-10 18:10:15,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 18:10:15,363 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-10 18:10:15,368 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 18:10:15,368 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 18:10:15,418 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 18:10:15,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 214 transitions, 444 flow [2024-11-10 18:10:15,480 INFO L124 PetriNetUnfolderBase]: 76/390 cut-off events. [2024-11-10 18:10:15,481 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 18:10:15,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 390 events. 76/390 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2161 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 232. Up to 12 conditions per place. [2024-11-10 18:10:15,487 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 214 transitions, 444 flow [2024-11-10 18:10:15,493 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 214 transitions, 444 flow [2024-11-10 18:10:15,495 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:10:15,496 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@14609c7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:10:15,497 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-11-10 18:10:15,499 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:10:15,499 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-10 18:10:15,500 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:10:15,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:10:15,500 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:10:15,500 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-10 18:10:15,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:10:15,501 INFO L85 PathProgramCache]: Analyzing trace with hash 24417145, now seen corresponding path program 1 times [2024-11-10 18:10:15,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:10:15,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314161033] [2024-11-10 18:10:15,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:10:15,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:10:15,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:10:15,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:10:15,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:10:15,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314161033] [2024-11-10 18:10:15,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314161033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:10:15,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:10:15,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:10:15,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776894346] [2024-11-10 18:10:15,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:10:15,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:10:15,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:10:15,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:10:15,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:10:15,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 214 [2024-11-10 18:10:15,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 214 transitions, 444 flow. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:15,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:10:15,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 214 [2024-11-10 18:10:15,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:10:21,355 INFO L124 PetriNetUnfolderBase]: 20648/47731 cut-off events. [2024-11-10 18:10:21,355 INFO L125 PetriNetUnfolderBase]: For 150/181 co-relation queries the response was YES. [2024-11-10 18:10:21,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78440 conditions, 47731 events. 20648/47731 cut-off events. For 150/181 co-relation queries the response was YES. Maximal size of possible extension queue 1384. Compared 545793 event pairs, 18392 based on Foata normal form. 16706/58345 useless extension candidates. Maximal degree in co-relation 67766. Up to 29335 conditions per place. [2024-11-10 18:10:21,842 INFO L140 encePairwiseOnDemand]: 172/214 looper letters, 104 selfloop transitions, 3 changer transitions 2/212 dead transitions. [2024-11-10 18:10:21,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 212 transitions, 658 flow [2024-11-10 18:10:21,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:10:21,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:10:21,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 481 transitions. [2024-11-10 18:10:21,846 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7492211838006231 [2024-11-10 18:10:21,846 INFO L175 Difference]: Start difference. First operand has 175 places, 214 transitions, 444 flow. Second operand 3 states and 481 transitions. [2024-11-10 18:10:21,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 212 transitions, 658 flow [2024-11-10 18:10:21,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 212 transitions, 658 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:10:21,854 INFO L231 Difference]: Finished difference. Result has 175 places, 172 transitions, 371 flow [2024-11-10 18:10:21,855 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=371, PETRI_PLACES=175, PETRI_TRANSITIONS=172} [2024-11-10 18:10:21,857 INFO L277 CegarLoopForPetriNet]: 175 programPoint places, 0 predicate places. [2024-11-10 18:10:21,858 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 172 transitions, 371 flow [2024-11-10 18:10:21,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:21,859 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:10:21,859 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-10 18:10:21,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 18:10:21,859 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-10 18:10:21,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:10:21,860 INFO L85 PathProgramCache]: Analyzing trace with hash 756856078, now seen corresponding path program 1 times [2024-11-10 18:10:21,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:10:21,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662597305] [2024-11-10 18:10:21,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:10:21,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:10:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:10:21,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:10:21,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:10:21,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662597305] [2024-11-10 18:10:21,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662597305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:10:21,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:10:21,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:10:21,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656424914] [2024-11-10 18:10:21,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:10:21,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:10:21,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:10:21,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:10:21,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:10:21,971 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 214 [2024-11-10 18:10:21,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 172 transitions, 371 flow. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:21,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:10:21,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 214 [2024-11-10 18:10:21,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:10:26,293 INFO L124 PetriNetUnfolderBase]: 21450/49456 cut-off events. [2024-11-10 18:10:26,293 INFO L125 PetriNetUnfolderBase]: For 1434/1434 co-relation queries the response was YES. [2024-11-10 18:10:26,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82263 conditions, 49456 events. 21450/49456 cut-off events. For 1434/1434 co-relation queries the response was YES. Maximal size of possible extension queue 1436. Compared 566569 event pairs, 18373 based on Foata normal form. 0/44076 useless extension candidates. Maximal degree in co-relation 79281. Up to 29283 conditions per place. [2024-11-10 18:10:26,991 INFO L140 encePairwiseOnDemand]: 210/214 looper letters, 106 selfloop transitions, 2 changer transitions 0/208 dead transitions. [2024-11-10 18:10:26,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 208 transitions, 659 flow [2024-11-10 18:10:26,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:10:26,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:10:26,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 410 transitions. [2024-11-10 18:10:26,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6386292834890965 [2024-11-10 18:10:26,994 INFO L175 Difference]: Start difference. First operand has 175 places, 172 transitions, 371 flow. Second operand 3 states and 410 transitions. [2024-11-10 18:10:26,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 208 transitions, 659 flow [2024-11-10 18:10:27,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 208 transitions, 648 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-10 18:10:27,133 INFO L231 Difference]: Finished difference. Result has 172 places, 170 transitions, 360 flow [2024-11-10 18:10:27,134 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=360, PETRI_PLACES=172, PETRI_TRANSITIONS=170} [2024-11-10 18:10:27,135 INFO L277 CegarLoopForPetriNet]: 175 programPoint places, -3 predicate places. [2024-11-10 18:10:27,135 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 170 transitions, 360 flow [2024-11-10 18:10:27,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:27,137 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:10:27,137 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-10 18:10:27,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 18:10:27,137 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-10 18:10:27,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:10:27,140 INFO L85 PathProgramCache]: Analyzing trace with hash 756856079, now seen corresponding path program 1 times [2024-11-10 18:10:27,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:10:27,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004262547] [2024-11-10 18:10:27,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:10:27,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:10:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:10:27,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:10:27,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:10:27,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004262547] [2024-11-10 18:10:27,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004262547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:10:27,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:10:27,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:10:27,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798154581] [2024-11-10 18:10:27,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:10:27,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:10:27,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:10:27,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:10:27,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:10:27,290 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 214 [2024-11-10 18:10:27,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 170 transitions, 360 flow. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:27,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:10:27,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 214 [2024-11-10 18:10:27,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:10:31,196 INFO L124 PetriNetUnfolderBase]: 22282/52303 cut-off events. [2024-11-10 18:10:31,196 INFO L125 PetriNetUnfolderBase]: For 637/669 co-relation queries the response was YES. [2024-11-10 18:10:31,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85829 conditions, 52303 events. 22282/52303 cut-off events. For 637/669 co-relation queries the response was YES. Maximal size of possible extension queue 1473. Compared 607066 event pairs, 20710 based on Foata normal form. 1/45991 useless extension candidates. Maximal degree in co-relation 82513. Up to 32954 conditions per place. [2024-11-10 18:10:31,607 INFO L140 encePairwiseOnDemand]: 210/214 looper letters, 90 selfloop transitions, 2 changer transitions 0/191 dead transitions. [2024-11-10 18:10:31,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 191 transitions, 586 flow [2024-11-10 18:10:31,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:10:31,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:10:31,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 397 transitions. [2024-11-10 18:10:31,610 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.618380062305296 [2024-11-10 18:10:31,610 INFO L175 Difference]: Start difference. First operand has 172 places, 170 transitions, 360 flow. Second operand 3 states and 397 transitions. [2024-11-10 18:10:31,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 191 transitions, 586 flow [2024-11-10 18:10:31,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 191 transitions, 582 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:10:31,648 INFO L231 Difference]: Finished difference. Result has 173 places, 171 transitions, 370 flow [2024-11-10 18:10:31,648 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=370, PETRI_PLACES=173, PETRI_TRANSITIONS=171} [2024-11-10 18:10:31,649 INFO L277 CegarLoopForPetriNet]: 175 programPoint places, -2 predicate places. [2024-11-10 18:10:31,649 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 171 transitions, 370 flow [2024-11-10 18:10:31,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:31,650 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:10:31,650 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 18:10:31,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 18:10:31,650 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-10 18:10:31,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:10:31,650 INFO L85 PathProgramCache]: Analyzing trace with hash -877803399, now seen corresponding path program 1 times [2024-11-10 18:10:31,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:10:31,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971924719] [2024-11-10 18:10:31,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:10:31,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:10:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:10:31,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:10:31,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:10:31,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971924719] [2024-11-10 18:10:31,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971924719] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:10:31,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109082467] [2024-11-10 18:10:31,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:10:31,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:10:31,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:10:32,001 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) [2024-11-10 18:10:32,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 18:10:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:10:32,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 18:10:32,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:10:32,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-10 18:10:32,203 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:10:32,204 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:10:32,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:10:32,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109082467] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:10:32,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:10:32,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-11-10 18:10:32,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723102609] [2024-11-10 18:10:32,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:10:32,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 18:10:32,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:10:32,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 18:10:32,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-10 18:10:32,558 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 214 [2024-11-10 18:10:32,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 171 transitions, 370 flow. Second operand has 9 states, 9 states have (on average 102.44444444444444) internal successors, (922), 9 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:32,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:10:32,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 214 [2024-11-10 18:10:32,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:10:33,210 INFO L124 PetriNetUnfolderBase]: 2800/6005 cut-off events. [2024-11-10 18:10:33,210 INFO L125 PetriNetUnfolderBase]: For 1310/1310 co-relation queries the response was YES. [2024-11-10 18:10:33,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10967 conditions, 6005 events. 2800/6005 cut-off events. For 1310/1310 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 49983 event pairs, 418 based on Foata normal form. 840/6431 useless extension candidates. Maximal degree in co-relation 10800. Up to 3519 conditions per place. [2024-11-10 18:10:33,264 INFO L140 encePairwiseOnDemand]: 210/214 looper letters, 104 selfloop transitions, 3 changer transitions 0/169 dead transitions. [2024-11-10 18:10:33,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 169 transitions, 570 flow [2024-11-10 18:10:33,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:10:33,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:10:33,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 611 transitions. [2024-11-10 18:10:33,267 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5710280373831775 [2024-11-10 18:10:33,267 INFO L175 Difference]: Start difference. First operand has 173 places, 171 transitions, 370 flow. Second operand 5 states and 611 transitions. [2024-11-10 18:10:33,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 169 transitions, 570 flow [2024-11-10 18:10:33,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 169 transitions, 568 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:10:33,275 INFO L231 Difference]: Finished difference. Result has 116 places, 108 transitions, 238 flow [2024-11-10 18:10:33,275 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=238, PETRI_PLACES=116, PETRI_TRANSITIONS=108} [2024-11-10 18:10:33,277 INFO L277 CegarLoopForPetriNet]: 175 programPoint places, -59 predicate places. [2024-11-10 18:10:33,277 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 108 transitions, 238 flow [2024-11-10 18:10:33,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 102.44444444444444) internal successors, (922), 9 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:33,280 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:10:33,280 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:10:33,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 18:10:33,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-10 18:10:33,485 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-10 18:10:33,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:10:33,485 INFO L85 PathProgramCache]: Analyzing trace with hash 527729183, now seen corresponding path program 1 times [2024-11-10 18:10:33,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:10:33,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243717478] [2024-11-10 18:10:33,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:10:33,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:10:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:10:33,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:10:33,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:10:33,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243717478] [2024-11-10 18:10:33,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243717478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:10:33,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:10:33,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:10:33,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662067708] [2024-11-10 18:10:33,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:10:33,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:10:33,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:10:33,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:10:33,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:10:33,721 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 214 [2024-11-10 18:10:33,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 108 transitions, 238 flow. Second operand has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:33,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:10:33,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 214 [2024-11-10 18:10:33,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:10:34,460 INFO L124 PetriNetUnfolderBase]: 2881/6676 cut-off events. [2024-11-10 18:10:34,460 INFO L125 PetriNetUnfolderBase]: For 1337/1337 co-relation queries the response was YES. [2024-11-10 18:10:34,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12039 conditions, 6676 events. 2881/6676 cut-off events. For 1337/1337 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 56941 event pairs, 2717 based on Foata normal form. 0/6342 useless extension candidates. Maximal degree in co-relation 10341. Up to 4453 conditions per place. [2024-11-10 18:10:34,512 INFO L140 encePairwiseOnDemand]: 203/214 looper letters, 45 selfloop transitions, 1 changer transitions 0/98 dead transitions. [2024-11-10 18:10:34,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 98 transitions, 310 flow [2024-11-10 18:10:34,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:10:34,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:10:34,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 331 transitions. [2024-11-10 18:10:34,514 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5155763239875389 [2024-11-10 18:10:34,515 INFO L175 Difference]: Start difference. First operand has 116 places, 108 transitions, 238 flow. Second operand 3 states and 331 transitions. [2024-11-10 18:10:34,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 98 transitions, 310 flow [2024-11-10 18:10:34,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 98 transitions, 303 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-10 18:10:34,519 INFO L231 Difference]: Finished difference. Result has 105 places, 98 transitions, 213 flow [2024-11-10 18:10:34,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=105, PETRI_TRANSITIONS=98} [2024-11-10 18:10:34,520 INFO L277 CegarLoopForPetriNet]: 175 programPoint places, -70 predicate places. [2024-11-10 18:10:34,520 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 98 transitions, 213 flow [2024-11-10 18:10:34,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:34,521 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:10:34,521 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:10:34,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 18:10:34,522 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-10 18:10:34,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:10:34,522 INFO L85 PathProgramCache]: Analyzing trace with hash 527729184, now seen corresponding path program 1 times [2024-11-10 18:10:34,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:10:34,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916338363] [2024-11-10 18:10:34,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:10:34,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:10:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:10:34,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:10:34,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:10:34,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916338363] [2024-11-10 18:10:34,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916338363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:10:34,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:10:34,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:10:34,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704162365] [2024-11-10 18:10:34,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:10:34,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:10:34,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:10:34,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:10:34,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:10:34,747 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 214 [2024-11-10 18:10:34,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 98 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:34,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:10:34,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 214 [2024-11-10 18:10:34,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:10:35,184 INFO L124 PetriNetUnfolderBase]: 2061/4690 cut-off events. [2024-11-10 18:10:35,184 INFO L125 PetriNetUnfolderBase]: For 507/507 co-relation queries the response was YES. [2024-11-10 18:10:35,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8419 conditions, 4690 events. 2061/4690 cut-off events. For 507/507 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 37205 event pairs, 1938 based on Foata normal form. 0/4429 useless extension candidates. Maximal degree in co-relation 8411. Up to 3240 conditions per place. [2024-11-10 18:10:35,214 INFO L140 encePairwiseOnDemand]: 203/214 looper letters, 44 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2024-11-10 18:10:35,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 88 transitions, 283 flow [2024-11-10 18:10:35,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:10:35,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:10:35,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2024-11-10 18:10:35,216 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4766355140186916 [2024-11-10 18:10:35,216 INFO L175 Difference]: Start difference. First operand has 105 places, 98 transitions, 213 flow. Second operand 3 states and 306 transitions. [2024-11-10 18:10:35,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 88 transitions, 283 flow [2024-11-10 18:10:35,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 88 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:10:35,220 INFO L231 Difference]: Finished difference. Result has 96 places, 88 transitions, 194 flow [2024-11-10 18:10:35,220 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=96, PETRI_TRANSITIONS=88} [2024-11-10 18:10:35,221 INFO L277 CegarLoopForPetriNet]: 175 programPoint places, -79 predicate places. [2024-11-10 18:10:35,221 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 88 transitions, 194 flow [2024-11-10 18:10:35,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:35,222 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:10:35,222 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1] [2024-11-10 18:10:35,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 18:10:35,222 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-10 18:10:35,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:10:35,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1464565384, now seen corresponding path program 1 times [2024-11-10 18:10:35,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:10:35,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218654874] [2024-11-10 18:10:35,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:10:35,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:10:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:10:35,243 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 18:10:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:10:35,262 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 18:10:35,263 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 18:10:35,263 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (49 of 50 remaining) [2024-11-10 18:10:35,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (48 of 50 remaining) [2024-11-10 18:10:35,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 50 remaining) [2024-11-10 18:10:35,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 50 remaining) [2024-11-10 18:10:35,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 50 remaining) [2024-11-10 18:10:35,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 50 remaining) [2024-11-10 18:10:35,265 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 50 remaining) [2024-11-10 18:10:35,265 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 50 remaining) [2024-11-10 18:10:35,265 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 50 remaining) [2024-11-10 18:10:35,265 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 50 remaining) [2024-11-10 18:10:35,265 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 50 remaining) [2024-11-10 18:10:35,265 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 50 remaining) [2024-11-10 18:10:35,265 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 50 remaining) [2024-11-10 18:10:35,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 50 remaining) [2024-11-10 18:10:35,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 50 remaining) [2024-11-10 18:10:35,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 50 remaining) [2024-11-10 18:10:35,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK (33 of 50 remaining) [2024-11-10 18:10:35,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 50 remaining) [2024-11-10 18:10:35,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 50 remaining) [2024-11-10 18:10:35,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 50 remaining) [2024-11-10 18:10:35,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 50 remaining) [2024-11-10 18:10:35,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 50 remaining) [2024-11-10 18:10:35,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 50 remaining) [2024-11-10 18:10:35,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 50 remaining) [2024-11-10 18:10:35,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 50 remaining) [2024-11-10 18:10:35,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 50 remaining) [2024-11-10 18:10:35,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 50 remaining) [2024-11-10 18:10:35,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONMEMORY_LEAK (22 of 50 remaining) [2024-11-10 18:10:35,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 50 remaining) [2024-11-10 18:10:35,269 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 50 remaining) [2024-11-10 18:10:35,269 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 50 remaining) [2024-11-10 18:10:35,269 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 50 remaining) [2024-11-10 18:10:35,269 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 50 remaining) [2024-11-10 18:10:35,269 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 50 remaining) [2024-11-10 18:10:35,270 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 50 remaining) [2024-11-10 18:10:35,270 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 50 remaining) [2024-11-10 18:10:35,270 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 50 remaining) [2024-11-10 18:10:35,270 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 50 remaining) [2024-11-10 18:10:35,270 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONMEMORY_LEAK (11 of 50 remaining) [2024-11-10 18:10:35,271 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 50 remaining) [2024-11-10 18:10:35,271 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 50 remaining) [2024-11-10 18:10:35,271 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 50 remaining) [2024-11-10 18:10:35,271 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 50 remaining) [2024-11-10 18:10:35,272 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 50 remaining) [2024-11-10 18:10:35,272 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 50 remaining) [2024-11-10 18:10:35,272 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 50 remaining) [2024-11-10 18:10:35,272 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 50 remaining) [2024-11-10 18:10:35,272 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 50 remaining) [2024-11-10 18:10:35,273 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 50 remaining) [2024-11-10 18:10:35,273 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 50 remaining) [2024-11-10 18:10:35,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 18:10:35,273 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:10:35,274 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 18:10:35,274 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 18:10:35,327 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 18:10:35,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 278 transitions, 583 flow [2024-11-10 18:10:35,425 INFO L124 PetriNetUnfolderBase]: 112/579 cut-off events. [2024-11-10 18:10:35,426 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-10 18:10:35,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 579 events. 112/579 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3364 event pairs, 1 based on Foata normal form. 0/354 useless extension candidates. Maximal degree in co-relation 399. Up to 16 conditions per place. [2024-11-10 18:10:35,439 INFO L82 GeneralOperation]: Start removeDead. Operand has 227 places, 278 transitions, 583 flow [2024-11-10 18:10:35,453 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 227 places, 278 transitions, 583 flow [2024-11-10 18:10:35,455 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:10:35,456 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@14609c7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:10:35,456 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-11-10 18:10:35,459 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:10:35,459 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-10 18:10:35,459 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:10:35,460 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:10:35,460 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:10:35,460 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-10 18:10:35,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:10:35,461 INFO L85 PathProgramCache]: Analyzing trace with hash 32975097, now seen corresponding path program 1 times [2024-11-10 18:10:35,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:10:35,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816055582] [2024-11-10 18:10:35,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:10:35,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:10:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:10:35,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:10:35,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:10:35,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816055582] [2024-11-10 18:10:35,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816055582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:10:35,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:10:35,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:10:35,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168917043] [2024-11-10 18:10:35,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:10:35,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:10:35,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:10:35,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:10:35,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:10:35,536 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 278 [2024-11-10 18:10:35,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 278 transitions, 583 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:35,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:10:35,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 278 [2024-11-10 18:10:35,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand