./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f Calling Ultimate with: /root/.sdkman/candidates/java/current/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/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:12:43,173 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:12:43,241 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:12:43,245 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:12:43,246 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:12:43,273 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:12:43,274 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:12:43,274 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:12:43,275 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:12:43,278 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:12:43,279 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:12:43,279 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:12:43,280 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:12:43,281 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:12:43,281 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:12:43,281 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:12:43,282 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:12:43,282 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:12:43,282 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:12:43,282 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:12:43,283 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:12:43,283 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:12:43,283 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:12:43,283 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:12:43,284 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:12:43,284 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:12:43,284 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:12:43,284 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:12:43,285 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:12:43,285 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:12:43,286 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:12:43,286 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:12:43,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:12:43,287 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:12:43,287 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:12:43,287 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:12:43,287 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:12:43,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:12:43,302 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:12:43,302 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:12:43,302 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:12:43,303 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:12:43,303 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:12:43,303 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 [2024-01-27 15:12:43,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:12:43,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:12:43,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:12:43,531 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:12:43,531 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:12:43,532 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i [2024-01-27 15:12:44,586 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:12:44,823 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:12:44,823 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i [2024-01-27 15:12:44,839 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc3053178/7d4df3a5ce494191ac3ec39c8e735f53/FLAG1f0632536 [2024-01-27 15:12:44,852 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc3053178/7d4df3a5ce494191ac3ec39c8e735f53 [2024-01-27 15:12:44,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:12:44,855 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:12:44,857 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:12:44,858 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:12:44,861 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:12:44,862 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:12:44" (1/1) ... [2024-01-27 15:12:44,862 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3373e8bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:12:44, skipping insertion in model container [2024-01-27 15:12:44,862 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:12:44" (1/1) ... [2024-01-27 15:12:44,906 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:12:45,244 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i[41323,41336] [2024-01-27 15:12:45,271 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:12:45,286 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:12:45,326 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i[41323,41336] [2024-01-27 15:12:45,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:12:45,389 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:12:45,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:12:45 WrapperNode [2024-01-27 15:12:45,389 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:12:45,391 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:12:45,391 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:12:45,391 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:12:45,397 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:12:45" (1/1) ... [2024-01-27 15:12:45,422 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:12:45" (1/1) ... [2024-01-27 15:12:45,460 INFO L138 Inliner]: procedures = 274, calls = 51, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 141 [2024-01-27 15:12:45,461 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:12:45,461 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:12:45,461 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:12:45,462 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:12:45,470 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:12:45" (1/1) ... [2024-01-27 15:12:45,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:12:45" (1/1) ... [2024-01-27 15:12:45,482 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:12:45" (1/1) ... [2024-01-27 15:12:45,506 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2024-01-27 15:12:45,507 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:12:45" (1/1) ... [2024-01-27 15:12:45,507 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:12:45" (1/1) ... [2024-01-27 15:12:45,518 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:12:45" (1/1) ... [2024-01-27 15:12:45,524 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:12:45" (1/1) ... [2024-01-27 15:12:45,536 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:12:45" (1/1) ... [2024-01-27 15:12:45,537 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:12:45" (1/1) ... [2024-01-27 15:12:45,540 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:12:45,542 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:12:45,542 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:12:45,542 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:12:45,543 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:12:45" (1/1) ... [2024-01-27 15:12:45,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:12:45,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:12:45,571 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) [2024-01-27 15:12:45,583 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 [2024-01-27 15:12:45,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:12:45,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:12:45,617 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-27 15:12:45,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:12:45,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:12:45,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:12:45,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:12:45,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 15:12:45,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:12:45,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:12:45,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:12:45,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:12:45,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 15:12:45,619 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-27 15:12:45,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:12:45,619 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-01-27 15:12:45,619 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-01-27 15:12:45,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:12:45,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:12:45,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:12:45,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:12:45,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 15:12:45,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:12:45,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:12:45,622 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 15:12:45,784 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:12:45,786 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:12:45,930 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:12:45,931 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:12:46,030 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:12:46,030 INFO L320 CfgBuilder]: Removed 10 assume(true) statements. [2024-01-27 15:12:46,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:12:46 BoogieIcfgContainer [2024-01-27 15:12:46,031 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:12:46,032 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:12:46,032 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:12:46,035 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:12:46,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:12:44" (1/3) ... [2024-01-27 15:12:46,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a1a729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:12:46, skipping insertion in model container [2024-01-27 15:12:46,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:12:45" (2/3) ... [2024-01-27 15:12:46,036 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a1a729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:12:46, skipping insertion in model container [2024-01-27 15:12:46,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:12:46" (3/3) ... [2024-01-27 15:12:46,037 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_28-funptr_racefree.i [2024-01-27 15:12:46,043 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:12:46,049 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:12:46,050 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:12:46,050 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:12:46,089 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-01-27 15:12:46,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 57 transitions, 121 flow [2024-01-27 15:12:46,189 INFO L124 PetriNetUnfolderBase]: 13/81 cut-off events. [2024-01-27 15:12:46,189 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-27 15:12:46,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 81 events. 13/81 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 244 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 52. Up to 4 conditions per place. [2024-01-27 15:12:46,195 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 57 transitions, 121 flow [2024-01-27 15:12:46,199 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 55 transitions, 114 flow [2024-01-27 15:12:46,212 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:12:46,219 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@1bb60de3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:12:46,219 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-01-27 15:12:46,230 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:12:46,230 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2024-01-27 15:12:46,230 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 15:12:46,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:12:46,231 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-01-27 15:12:46,231 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:12:46,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:12:46,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1431319436, now seen corresponding path program 1 times [2024-01-27 15:12:46,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:12:46,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572402642] [2024-01-27 15:12:46,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:12:46,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:12:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 15:12:46,396 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-27 15:12:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 15:12:46,459 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-27 15:12:46,461 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-27 15:12:46,462 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-01-27 15:12:46,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-01-27 15:12:46,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:12:46,465 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-01-27 15:12:46,470 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-27 15:12:46,470 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-27 15:12:46,499 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-27 15:12:46,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 86 transitions, 188 flow [2024-01-27 15:12:46,541 INFO L124 PetriNetUnfolderBase]: 24/141 cut-off events. [2024-01-27 15:12:46,542 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-27 15:12:46,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 141 events. 24/141 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 548 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 85. Up to 6 conditions per place. [2024-01-27 15:12:46,544 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 86 transitions, 188 flow [2024-01-27 15:12:46,547 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 86 transitions, 188 flow [2024-01-27 15:12:46,549 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:12:46,550 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@1bb60de3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:12:46,551 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-01-27 15:12:46,562 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:12:46,562 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-01-27 15:12:46,563 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 15:12:46,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:12:46,563 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-01-27 15:12:46,563 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:12:46,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:12:46,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1512345740, now seen corresponding path program 1 times [2024-01-27 15:12:46,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:12:46,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752591002] [2024-01-27 15:12:46,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:12:46,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:12:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 15:12:46,623 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-27 15:12:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 15:12:46,678 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-27 15:12:46,681 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-27 15:12:46,682 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-01-27 15:12:46,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-01-27 15:12:46,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:12:46,682 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-01-27 15:12:46,683 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-27 15:12:46,683 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-01-27 15:12:46,725 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-27 15:12:46,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 115 transitions, 257 flow [2024-01-27 15:12:46,760 INFO L124 PetriNetUnfolderBase]: 38/212 cut-off events. [2024-01-27 15:12:46,760 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-01-27 15:12:46,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 212 events. 38/212 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 949 event pairs, 1 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 152. Up to 12 conditions per place. [2024-01-27 15:12:46,763 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 115 transitions, 257 flow [2024-01-27 15:12:46,765 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 115 transitions, 257 flow [2024-01-27 15:12:46,765 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:12:46,766 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@1bb60de3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:12:46,766 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-01-27 15:12:46,772 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:12:46,773 INFO L124 PetriNetUnfolderBase]: 1/57 cut-off events. [2024-01-27 15:12:46,773 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-01-27 15:12:46,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:12:46,773 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-01-27 15:12:46,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:12:46,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:12:46,774 INFO L85 PathProgramCache]: Analyzing trace with hash 984298931, now seen corresponding path program 1 times [2024-01-27 15:12:46,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:12:46,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306402836] [2024-01-27 15:12:46,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:12:46,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:12:46,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 15:12:46,798 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-27 15:12:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 15:12:46,819 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-27 15:12:46,820 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-27 15:12:46,820 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-01-27 15:12:46,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-01-27 15:12:46,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:12:46,820 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-01-27 15:12:46,821 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-27 15:12:46,821 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-01-27 15:12:46,848 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-27 15:12:46,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 144 transitions, 328 flow [2024-01-27 15:12:46,894 INFO L124 PetriNetUnfolderBase]: 60/307 cut-off events. [2024-01-27 15:12:46,894 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-01-27 15:12:46,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 307 events. 60/307 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1453 event pairs, 6 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 236. Up to 32 conditions per place. [2024-01-27 15:12:46,900 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 144 transitions, 328 flow [2024-01-27 15:12:46,904 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 144 transitions, 328 flow [2024-01-27 15:12:46,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:12:46,906 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@1bb60de3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:12:46,906 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-01-27 15:12:46,912 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:12:46,917 INFO L124 PetriNetUnfolderBase]: 1/66 cut-off events. [2024-01-27 15:12:46,917 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-01-27 15:12:46,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:12:46,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:12:46,918 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:12:46,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:12:46,918 INFO L85 PathProgramCache]: Analyzing trace with hash -457392447, now seen corresponding path program 1 times [2024-01-27 15:12:46,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:12:46,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389666146] [2024-01-27 15:12:46,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:12:46,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:12:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:12:47,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:12:47,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:12:47,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389666146] [2024-01-27 15:12:47,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389666146] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:12:47,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:12:47,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:12:47,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198255386] [2024-01-27 15:12:47,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:12:47,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:12:47,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:12:47,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:12:47,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:12:47,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 144 [2024-01-27 15:12:47,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 144 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:12:47,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:12:47,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 144 [2024-01-27 15:12:47,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand