./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_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_10-ptrmunge_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 337bc30baab893db6c1e898eac989d238a0e57740b5469c94ed68dbaffc92f80 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:08:03,137 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:08:03,244 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:08:03,249 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:08:03,250 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:08:03,280 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:08:03,282 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:08:03,283 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:08:03,284 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:08:03,285 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:08:03,286 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:08:03,286 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:08:03,287 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:08:03,289 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:08:03,289 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:08:03,290 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:08:03,290 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:08:03,290 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:08:03,290 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:08:03,291 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:08:03,291 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:08:03,294 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:08:03,295 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:08:03,295 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:08:03,295 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:08:03,296 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:08:03,296 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:08:03,296 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:08:03,296 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:08:03,297 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:08:03,298 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:08:03,300 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:08:03,300 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:08:03,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:08:03,301 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:08:03,301 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:08:03,302 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:08:03,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:08:03,303 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:08:03,303 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:08:03,304 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:08:03,304 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:08:03,304 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 337bc30baab893db6c1e898eac989d238a0e57740b5469c94ed68dbaffc92f80 [2024-11-10 18:08:03,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:08:03,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:08:03,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:08:03,630 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:08:03,631 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:08:03,632 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2024-11-10 18:08:05,270 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:08:05,582 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:08:05,583 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2024-11-10 18:08:05,599 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ef6c5520/d5a4f577a3b14e0a829b943d78eb2b82/FLAG99fdaa908 [2024-11-10 18:08:05,885 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ef6c5520/d5a4f577a3b14e0a829b943d78eb2b82 [2024-11-10 18:08:05,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:08:05,889 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:08:05,891 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:08:05,892 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:08:05,901 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:08:05,902 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:08:05" (1/1) ... [2024-11-10 18:08:05,906 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38dc840a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:05, skipping insertion in model container [2024-11-10 18:08:05,907 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:08:05" (1/1) ... [2024-11-10 18:08:05,957 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:08:06,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:08:06,419 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:08:06,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:08:06,527 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:08:06,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:06 WrapperNode [2024-11-10 18:08:06,528 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:08:06,529 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:08:06,529 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:08:06,529 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:08:06,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:06" (1/1) ... [2024-11-10 18:08:06,551 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:06" (1/1) ... [2024-11-10 18:08:06,580 INFO L138 Inliner]: procedures = 173, calls = 57, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 231 [2024-11-10 18:08:06,581 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:08:06,582 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:08:06,582 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:08:06,582 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:08:06,598 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:06" (1/1) ... [2024-11-10 18:08:06,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:06" (1/1) ... [2024-11-10 18:08:06,607 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:06" (1/1) ... [2024-11-10 18:08:06,657 INFO L175 MemorySlicer]: Split 33 memory accesses to 8 slices as follows [2, 5, 6, 6, 2, 2, 5, 5]. 18 percent of accesses are in the largest equivalence class. The 19 initializations are split as follows [2, 5, 1, 1, 0, 0, 5, 5]. The 6 writes are split as follows [0, 0, 2, 2, 1, 1, 0, 0]. [2024-11-10 18:08:06,658 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:06" (1/1) ... [2024-11-10 18:08:06,658 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:06" (1/1) ... [2024-11-10 18:08:06,674 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:06" (1/1) ... [2024-11-10 18:08:06,675 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:06" (1/1) ... [2024-11-10 18:08:06,681 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:06" (1/1) ... [2024-11-10 18:08:06,684 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:06" (1/1) ... [2024-11-10 18:08:06,688 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:08:06,690 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:08:06,690 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:08:06,691 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:08:06,692 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:06" (1/1) ... [2024-11-10 18:08:06,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:08:06,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:08:06,739 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 18:08:06,748 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 18:08:06,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 18:08:06,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 18:08:06,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 18:08:06,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 18:08:06,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-10 18:08:06,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-10 18:08:06,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-10 18:08:06,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-10 18:08:06,792 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-11-10 18:08:06,792 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-11-10 18:08:06,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 18:08:06,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 18:08:06,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 18:08:06,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 18:08:06,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-10 18:08:06,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-10 18:08:06,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-10 18:08:06,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-10 18:08:06,793 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 18:08:06,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:08:06,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 18:08:06,794 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-11-10 18:08:06,794 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-11-10 18:08:06,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 18:08:06,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 18:08:06,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 18:08:06,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 18:08:06,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 18:08:06,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-10 18:08:06,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-10 18:08:06,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-10 18:08:06,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-10 18:08:06,796 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 18:08:06,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:08:06,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:08:06,798 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 18:08:06,972 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:08:06,975 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:08:07,557 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L715: havoc main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset; [2024-11-10 18:08:07,557 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L715-1: SUMMARY for call ULTIMATE.dealloc(main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset); srcloc: null [2024-11-10 18:08:07,557 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L715-2: havoc main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset; [2024-11-10 18:08:07,558 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L715-3: SUMMARY for call ULTIMATE.dealloc(main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset); srcloc: null [2024-11-10 18:08:07,559 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:08:07,559 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:08:07,768 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:08:07,768 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:08:07,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:08:07 BoogieIcfgContainer [2024-11-10 18:08:07,769 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:08:07,773 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:08:07,774 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:08:07,777 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:08:07,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:08:05" (1/3) ... [2024-11-10 18:08:07,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69602e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:08:07, skipping insertion in model container [2024-11-10 18:08:07,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:06" (2/3) ... [2024-11-10 18:08:07,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69602e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:08:07, skipping insertion in model container [2024-11-10 18:08:07,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:08:07" (3/3) ... [2024-11-10 18:08:07,782 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_10-ptrmunge_racefree.i [2024-11-10 18:08:07,799 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:08:07,799 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2024-11-10 18:08:07,799 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:08:07,895 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-10 18:08:07,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 171 transitions, 362 flow [2024-11-10 18:08:08,067 INFO L124 PetriNetUnfolderBase]: 61/330 cut-off events. [2024-11-10 18:08:08,068 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-10 18:08:08,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 330 events. 61/330 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1880 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 196. Up to 8 conditions per place. [2024-11-10 18:08:08,081 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 171 transitions, 362 flow [2024-11-10 18:08:08,093 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 171 transitions, 362 flow [2024-11-10 18:08:08,104 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:08:08,114 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;@6738ff10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:08:08,115 INFO L334 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2024-11-10 18:08:08,120 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:08:08,124 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-10 18:08:08,124 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:08:08,125 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:08:08,126 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:08:08,126 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-10 18:08:08,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:08:08,132 INFO L85 PathProgramCache]: Analyzing trace with hash 19586484, now seen corresponding path program 1 times [2024-11-10 18:08:08,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:08:08,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109644594] [2024-11-10 18:08:08,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:08:08,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:08:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:08:08,501 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 18:08:08,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:08:08,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109644594] [2024-11-10 18:08:08,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109644594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:08:08,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:08:08,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:08:08,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771633085] [2024-11-10 18:08:08,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:08:08,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:08:08,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:08:08,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:08:08,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:08:08,635 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 171 [2024-11-10 18:08:08,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 171 transitions, 362 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 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 18:08:08,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:08:08,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 171 [2024-11-10 18:08:08,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:08:11,058 INFO L124 PetriNetUnfolderBase]: 7105/16128 cut-off events. [2024-11-10 18:08:11,059 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-11-10 18:08:11,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27205 conditions, 16128 events. 7105/16128 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 159742 event pairs, 4960 based on Foata normal form. 5437/20169 useless extension candidates. Maximal degree in co-relation 26018. Up to 8185 conditions per place. [2024-11-10 18:08:11,352 INFO L140 encePairwiseOnDemand]: 139/171 looper letters, 98 selfloop transitions, 2 changer transitions 0/179 dead transitions. [2024-11-10 18:08:11,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 179 transitions, 578 flow [2024-11-10 18:08:11,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:08:11,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:08:11,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2024-11-10 18:08:11,372 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7621832358674464 [2024-11-10 18:08:11,376 INFO L175 Difference]: Start difference. First operand has 142 places, 171 transitions, 362 flow. Second operand 3 states and 391 transitions. [2024-11-10 18:08:11,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 179 transitions, 578 flow [2024-11-10 18:08:11,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 179 transitions, 578 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:08:11,398 INFO L231 Difference]: Finished difference. Result has 140 places, 139 transitions, 302 flow [2024-11-10 18:08:11,400 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=140, PETRI_TRANSITIONS=139} [2024-11-10 18:08:11,405 INFO L277 CegarLoopForPetriNet]: 142 programPoint places, -2 predicate places. [2024-11-10 18:08:11,406 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 139 transitions, 302 flow [2024-11-10 18:08:11,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 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 18:08:11,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:08:11,406 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:08:11,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:08:11,407 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-10 18:08:11,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:08:11,409 INFO L85 PathProgramCache]: Analyzing trace with hash 19586485, now seen corresponding path program 1 times [2024-11-10 18:08:11,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:08:11,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036094520] [2024-11-10 18:08:11,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:08:11,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:08:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:08:11,625 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 18:08:11,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:08:11,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036094520] [2024-11-10 18:08:11,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036094520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:08:11,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:08:11,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:08:11,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180428955] [2024-11-10 18:08:11,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:08:11,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:08:11,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:08:11,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:08:11,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:08:11,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 171 [2024-11-10 18:08:11,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 139 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 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 18:08:11,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:08:11,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 171 [2024-11-10 18:08:11,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:08:13,435 INFO L124 PetriNetUnfolderBase]: 6199/14697 cut-off events. [2024-11-10 18:08:13,436 INFO L125 PetriNetUnfolderBase]: For 634/634 co-relation queries the response was YES. [2024-11-10 18:08:13,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24803 conditions, 14697 events. 6199/14697 cut-off events. For 634/634 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 145152 event pairs, 5484 based on Foata normal form. 1/13130 useless extension candidates. Maximal degree in co-relation 23880. Up to 9462 conditions per place. [2024-11-10 18:08:13,565 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 79 selfloop transitions, 2 changer transitions 0/160 dead transitions. [2024-11-10 18:08:13,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 160 transitions, 506 flow [2024-11-10 18:08:13,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:08:13,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:08:13,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 326 transitions. [2024-11-10 18:08:13,571 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6354775828460039 [2024-11-10 18:08:13,571 INFO L175 Difference]: Start difference. First operand has 140 places, 139 transitions, 302 flow. Second operand 3 states and 326 transitions. [2024-11-10 18:08:13,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 160 transitions, 506 flow [2024-11-10 18:08:13,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 160 transitions, 502 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:08:13,594 INFO L231 Difference]: Finished difference. Result has 141 places, 139 transitions, 308 flow [2024-11-10 18:08:13,595 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=308, PETRI_PLACES=141, PETRI_TRANSITIONS=139} [2024-11-10 18:08:13,596 INFO L277 CegarLoopForPetriNet]: 142 programPoint places, -1 predicate places. [2024-11-10 18:08:13,599 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 139 transitions, 308 flow [2024-11-10 18:08:13,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 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 18:08:13,600 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:08:13,600 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-10 18:08:13,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:08:13,601 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-10 18:08:13,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:08:13,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1542234910, now seen corresponding path program 1 times [2024-11-10 18:08:13,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:08:13,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354276583] [2024-11-10 18:08:13,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:08:13,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:08:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:08:13,846 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 18:08:13,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:08:13,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354276583] [2024-11-10 18:08:13,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354276583] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:08:13,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904073847] [2024-11-10 18:08:13,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:08:13,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:08:13,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:08:13,851 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 18:08:13,853 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 18:08:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:08:13,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 18:08:14,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:08:14,095 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 18:08:14,225 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 18:08:14,227 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:08:14,359 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 18:08:14,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904073847] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:08:14,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:08:14,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2024-11-10 18:08:14,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008029506] [2024-11-10 18:08:14,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:08:14,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 18:08:14,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:08:14,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 18:08:14,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-10 18:08:14,600 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 171 [2024-11-10 18:08:14,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 139 transitions, 308 flow. Second operand has 9 states, 9 states have (on average 82.33333333333333) internal successors, (741), 9 states have internal predecessors, (741), 0 states have call successors, (0), 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 18:08:14,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:08:14,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 171 [2024-11-10 18:08:14,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:08:14,782 INFO L124 PetriNetUnfolderBase]: 61/219 cut-off events. [2024-11-10 18:08:14,782 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-11-10 18:08:14,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 219 events. 61/219 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 979 event pairs, 0 based on Foata normal form. 42/250 useless extension candidates. Maximal degree in co-relation 411. Up to 123 conditions per place. [2024-11-10 18:08:14,784 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 45 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2024-11-10 18:08:14,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 78 transitions, 260 flow [2024-11-10 18:08:14,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:08:14,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:08:14,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 369 transitions. [2024-11-10 18:08:14,787 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5394736842105263 [2024-11-10 18:08:14,787 INFO L175 Difference]: Start difference. First operand has 141 places, 139 transitions, 308 flow. Second operand 4 states and 369 transitions. [2024-11-10 18:08:14,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 78 transitions, 260 flow [2024-11-10 18:08:14,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 78 transitions, 254 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:08:14,791 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 120 flow [2024-11-10 18:08:14,791 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2024-11-10 18:08:14,792 INFO L277 CegarLoopForPetriNet]: 142 programPoint places, -80 predicate places. [2024-11-10 18:08:14,792 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 120 flow [2024-11-10 18:08:14,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 82.33333333333333) internal successors, (741), 9 states have internal predecessors, (741), 0 states have call successors, (0), 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 18:08:14,793 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:08:14,794 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2024-11-10 18:08:14,816 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 18:08:14,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:08:14,999 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-10 18:08:15,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:08:15,001 INFO L85 PathProgramCache]: Analyzing trace with hash -564641265, now seen corresponding path program 1 times [2024-11-10 18:08:15,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:08:15,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685287337] [2024-11-10 18:08:15,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:08:15,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:08:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:08:15,026 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 18:08:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:08:15,075 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 18:08:15,076 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 18:08:15,078 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (54 of 55 remaining) [2024-11-10 18:08:15,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 55 remaining) [2024-11-10 18:08:15,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 55 remaining) [2024-11-10 18:08:15,083 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 55 remaining) [2024-11-10 18:08:15,083 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 55 remaining) [2024-11-10 18:08:15,083 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 55 remaining) [2024-11-10 18:08:15,083 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 55 remaining) [2024-11-10 18:08:15,084 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 55 remaining) [2024-11-10 18:08:15,084 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 55 remaining) [2024-11-10 18:08:15,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 55 remaining) [2024-11-10 18:08:15,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 55 remaining) [2024-11-10 18:08:15,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8ASSERT_VIOLATIONMEMORY_LEAK (43 of 55 remaining) [2024-11-10 18:08:15,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 55 remaining) [2024-11-10 18:08:15,086 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 55 remaining) [2024-11-10 18:08:15,086 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 55 remaining) [2024-11-10 18:08:15,086 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 55 remaining) [2024-11-10 18:08:15,086 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 55 remaining) [2024-11-10 18:08:15,087 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 55 remaining) [2024-11-10 18:08:15,087 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 55 remaining) [2024-11-10 18:08:15,087 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 55 remaining) [2024-11-10 18:08:15,087 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (34 of 55 remaining) [2024-11-10 18:08:15,088 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (33 of 55 remaining) [2024-11-10 18:08:15,088 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 55 remaining) [2024-11-10 18:08:15,088 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 55 remaining) [2024-11-10 18:08:15,088 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 55 remaining) [2024-11-10 18:08:15,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 55 remaining) [2024-11-10 18:08:15,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 55 remaining) [2024-11-10 18:08:15,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 55 remaining) [2024-11-10 18:08:15,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 55 remaining) [2024-11-10 18:08:15,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 55 remaining) [2024-11-10 18:08:15,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 55 remaining) [2024-11-10 18:08:15,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 55 remaining) [2024-11-10 18:08:15,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8ASSERT_VIOLATIONMEMORY_LEAK (22 of 55 remaining) [2024-11-10 18:08:15,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 55 remaining) [2024-11-10 18:08:15,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 55 remaining) [2024-11-10 18:08:15,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 55 remaining) [2024-11-10 18:08:15,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 55 remaining) [2024-11-10 18:08:15,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 55 remaining) [2024-11-10 18:08:15,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 55 remaining) [2024-11-10 18:08:15,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 55 remaining) [2024-11-10 18:08:15,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 55 remaining) [2024-11-10 18:08:15,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 55 remaining) [2024-11-10 18:08:15,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 55 remaining) [2024-11-10 18:08:15,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8ASSERT_VIOLATIONMEMORY_LEAK (11 of 55 remaining) [2024-11-10 18:08:15,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 55 remaining) [2024-11-10 18:08:15,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 55 remaining) [2024-11-10 18:08:15,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 55 remaining) [2024-11-10 18:08:15,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 55 remaining) [2024-11-10 18:08:15,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 55 remaining) [2024-11-10 18:08:15,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 55 remaining) [2024-11-10 18:08:15,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 55 remaining) [2024-11-10 18:08:15,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 55 remaining) [2024-11-10 18:08:15,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 55 remaining) [2024-11-10 18:08:15,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 55 remaining) [2024-11-10 18:08:15,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 55 remaining) [2024-11-10 18:08:15,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 18:08:15,096 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-10 18:08:15,101 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 18:08:15,101 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 18:08:15,180 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-11-10 18:08:15,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 301 transitions, 646 flow [2024-11-10 18:08:15,401 INFO L124 PetriNetUnfolderBase]: 205/995 cut-off events. [2024-11-10 18:08:15,401 INFO L125 PetriNetUnfolderBase]: For 72/75 co-relation queries the response was YES. [2024-11-10 18:08:15,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1084 conditions, 995 events. 205/995 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 7002 event pairs, 2 based on Foata normal form. 0/611 useless extension candidates. Maximal degree in co-relation 611. Up to 32 conditions per place. [2024-11-10 18:08:15,437 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 301 transitions, 646 flow [2024-11-10 18:08:15,462 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 246 places, 301 transitions, 646 flow [2024-11-10 18:08:15,466 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:08:15,468 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;@6738ff10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:08:15,471 INFO L334 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2024-11-10 18:08:15,474 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:08:15,475 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-10 18:08:15,475 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:08:15,476 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:08:15,476 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:08:15,476 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2024-11-10 18:08:15,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:08:15,477 INFO L85 PathProgramCache]: Analyzing trace with hash 28790900, now seen corresponding path program 1 times [2024-11-10 18:08:15,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:08:15,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056576864] [2024-11-10 18:08:15,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:08:15,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:08:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:08:15,547 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 18:08:15,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:08:15,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056576864] [2024-11-10 18:08:15,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056576864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:08:15,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:08:15,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:08:15,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777646683] [2024-11-10 18:08:15,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:08:15,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:08:15,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:08:15,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:08:15,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:08:15,601 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 301 [2024-11-10 18:08:15,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 301 transitions, 646 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 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 18:08:15,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:08:15,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 301 [2024-11-10 18:08:15,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand