./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90294d2-e6f8-47e1-b378-8956fb77432e/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90294d2-e6f8-47e1-b378-8956fb77432e/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90294d2-e6f8-47e1-b378-8956fb77432e/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90294d2-e6f8-47e1-b378-8956fb77432e/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90294d2-e6f8-47e1-b378-8956fb77432e/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90294d2-e6f8-47e1-b378-8956fb77432e/bin/uautomizer-verify-zZY32mL2XJ --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 0.2.3-dev-30e01a7 [2023-11-23 22:23:57,113 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:23:57,188 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90294d2-e6f8-47e1-b378-8956fb77432e/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 22:23:57,194 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:23:57,195 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:23:57,224 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:23:57,224 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:23:57,225 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:23:57,226 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:23:57,226 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:23:57,227 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:23:57,228 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:23:57,229 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:23:57,229 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:23:57,230 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:23:57,231 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:23:57,231 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:23:57,232 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:23:57,233 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:23:57,233 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:23:57,234 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:23:57,238 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:23:57,239 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:23:57,239 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:23:57,240 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:23:57,240 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:23:57,241 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:23:57,242 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:23:57,242 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:23:57,243 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:23:57,244 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:23:57,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:23:57,245 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:23:57,245 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:23:57,245 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:23:57,246 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:23:57,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:23:57,246 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:23:57,246 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:23:57,247 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:23:57,248 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:23:57,248 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:23:57,249 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90294d2-e6f8-47e1-b378-8956fb77432e/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90294d2-e6f8-47e1-b378-8956fb77432e/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 [2023-11-23 22:23:57,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:23:57,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:23:57,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:23:57,591 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:23:57,592 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:23:57,593 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90294d2-e6f8-47e1-b378-8956fb77432e/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2023-11-23 22:24:00,920 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:24:01,267 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:24:01,269 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90294d2-e6f8-47e1-b378-8956fb77432e/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2023-11-23 22:24:01,291 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90294d2-e6f8-47e1-b378-8956fb77432e/bin/uautomizer-verify-zZY32mL2XJ/data/fea3add8e/aac332f365bc4da58ae1c52a1b7a1f16/FLAG360f63e6a [2023-11-23 22:24:01,313 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90294d2-e6f8-47e1-b378-8956fb77432e/bin/uautomizer-verify-zZY32mL2XJ/data/fea3add8e/aac332f365bc4da58ae1c52a1b7a1f16 [2023-11-23 22:24:01,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:24:01,318 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:24:01,320 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:24:01,321 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:24:01,330 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:24:01,332 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:24:01" (1/1) ... [2023-11-23 22:24:01,333 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e208180 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:01, skipping insertion in model container [2023-11-23 22:24:01,334 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:24:01" (1/1) ... [2023-11-23 22:24:01,403 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:24:01,895 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90294d2-e6f8-47e1-b378-8956fb77432e/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i[41323,41336] [2023-11-23 22:24:01,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:24:01,940 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:24:01,979 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90294d2-e6f8-47e1-b378-8956fb77432e/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i[41323,41336] [2023-11-23 22:24:01,989 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:24:02,091 WARN L675 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:24:02,099 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:24:02,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:02 WrapperNode [2023-11-23 22:24:02,100 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:24:02,101 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:24:02,102 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:24:02,102 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:24:02,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:02" (1/1) ... [2023-11-23 22:24:02,129 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:02" (1/1) ... [2023-11-23 22:24:02,162 INFO L138 Inliner]: procedures = 274, calls = 51, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2023-11-23 22:24:02,163 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:24:02,165 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:24:02,165 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:24:02,165 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:24:02,174 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:02" (1/1) ... [2023-11-23 22:24:02,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:02" (1/1) ... [2023-11-23 22:24:02,185 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:02" (1/1) ... [2023-11-23 22:24:02,198 INFO L189 HeapSplitter]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2] [2023-11-23 22:24:02,199 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:02" (1/1) ... [2023-11-23 22:24:02,199 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:02" (1/1) ... [2023-11-23 22:24:02,208 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:02" (1/1) ... [2023-11-23 22:24:02,212 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:02" (1/1) ... [2023-11-23 22:24:02,215 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:02" (1/1) ... [2023-11-23 22:24:02,217 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:02" (1/1) ... [2023-11-23 22:24:02,221 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:24:02,222 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:24:02,222 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:24:02,222 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:24:02,223 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:02" (1/1) ... [2023-11-23 22:24:02,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:24:02,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90294d2-e6f8-47e1-b378-8956fb77432e/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:24:02,267 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90294d2-e6f8-47e1-b378-8956fb77432e/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:24:02,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90294d2-e6f8-47e1-b378-8956fb77432e/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:24:02,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:24:02,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:24:02,320 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-23 22:24:02,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 22:24:02,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 22:24:02,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 22:24:02,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 22:24:02,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 22:24:02,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 22:24:02,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 22:24:02,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 22:24:02,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 22:24:02,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 22:24:02,325 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-23 22:24:02,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:24:02,326 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-23 22:24:02,327 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-23 22:24:02,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:24:02,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 22:24:02,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 22:24:02,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 22:24:02,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 22:24:02,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:24:02,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:24:02,334 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 22:24:02,593 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:24:02,599 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:24:02,984 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:24:03,219 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:24:03,219 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-23 22:24:03,220 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:24:03 BoogieIcfgContainer [2023-11-23 22:24:03,220 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:24:03,225 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:24:03,226 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:24:03,229 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:24:03,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:24:01" (1/3) ... [2023-11-23 22:24:03,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15061078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:24:03, skipping insertion in model container [2023-11-23 22:24:03,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:02" (2/3) ... [2023-11-23 22:24:03,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15061078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:24:03, skipping insertion in model container [2023-11-23 22:24:03,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:24:03" (3/3) ... [2023-11-23 22:24:03,234 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_28-funptr_racefree.i [2023-11-23 22:24:03,241 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 22:24:03,250 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:24:03,250 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 22:24:03,250 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 22:24:03,312 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-23 22:24:03,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 57 transitions, 121 flow [2023-11-23 22:24:03,442 INFO L124 PetriNetUnfolderBase]: 13/81 cut-off events. [2023-11-23 22:24:03,443 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-23 22:24:03,451 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 246 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. [2023-11-23 22:24:03,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 57 transitions, 121 flow [2023-11-23 22:24:03,458 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 55 transitions, 114 flow [2023-11-23 22:24:03,479 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:24:03,488 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;@5c8d6508, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:24:03,489 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 22:24:03,500 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:24:03,501 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-11-23 22:24:03,501 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:24:03,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:24:03,502 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-23 22:24:03,502 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 22:24:03,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:24:03,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1242736076, now seen corresponding path program 1 times [2023-11-23 22:24:03,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:24:03,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514339529] [2023-11-23 22:24:03,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:24:03,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:24:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:24:03,719 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:24:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:24:03,813 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:24:03,815 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 22:24:03,817 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-11-23 22:24:03,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-23 22:24:03,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:24:03,820 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 22:24:03,825 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 22:24:03,825 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-23 22:24:03,865 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-23 22:24:03,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 86 transitions, 188 flow [2023-11-23 22:24:03,933 INFO L124 PetriNetUnfolderBase]: 24/141 cut-off events. [2023-11-23 22:24:03,933 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-23 22:24:03,937 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 545 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. [2023-11-23 22:24:03,937 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 86 transitions, 188 flow [2023-11-23 22:24:03,941 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 86 transitions, 188 flow [2023-11-23 22:24:03,944 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:24:03,947 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;@5c8d6508, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:24:03,947 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 22:24:03,965 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:24:03,965 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2023-11-23 22:24:03,966 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-23 22:24:03,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:24:03,966 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2023-11-23 22:24:03,967 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 22:24:03,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:24:03,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1242684818, now seen corresponding path program 1 times [2023-11-23 22:24:03,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:24:03,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487946219] [2023-11-23 22:24:03,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:24:03,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:24:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:24:04,033 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:24:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:24:04,074 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:24:04,077 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 22:24:04,077 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-11-23 22:24:04,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-23 22:24:04,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:24:04,078 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 22:24:04,079 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 22:24:04,079 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-23 22:24:04,120 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-23 22:24:04,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 115 transitions, 257 flow [2023-11-23 22:24:04,167 INFO L124 PetriNetUnfolderBase]: 38/212 cut-off events. [2023-11-23 22:24:04,167 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-23 22:24:04,171 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 955 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. [2023-11-23 22:24:04,172 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 115 transitions, 257 flow [2023-11-23 22:24:04,175 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 115 transitions, 257 flow [2023-11-23 22:24:04,177 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:24:04,178 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;@5c8d6508, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:24:04,178 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 22:24:04,189 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:24:04,190 INFO L124 PetriNetUnfolderBase]: 1/57 cut-off events. [2023-11-23 22:24:04,190 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-23 22:24:04,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:24:04,190 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2023-11-23 22:24:04,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 22:24:04,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:24:04,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1430978253, now seen corresponding path program 1 times [2023-11-23 22:24:04,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:24:04,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143730758] [2023-11-23 22:24:04,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:24:04,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:24:04,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:24:04,250 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:24:04,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:24:04,295 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:24:04,296 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 22:24:04,297 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-11-23 22:24:04,298 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-23 22:24:04,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:24:04,298 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 22:24:04,300 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 22:24:04,300 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-23 22:24:04,359 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-23 22:24:04,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 144 transitions, 328 flow [2023-11-23 22:24:04,447 INFO L124 PetriNetUnfolderBase]: 60/307 cut-off events. [2023-11-23 22:24:04,449 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-23 22:24:04,456 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 1447 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. [2023-11-23 22:24:04,456 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 144 transitions, 328 flow [2023-11-23 22:24:04,490 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 144 transitions, 328 flow [2023-11-23 22:24:04,492 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:24:04,493 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;@5c8d6508, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:24:04,493 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 22:24:04,507 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:24:04,507 INFO L124 PetriNetUnfolderBase]: 1/66 cut-off events. [2023-11-23 22:24:04,507 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-23 22:24:04,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:24:04,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:24:04,508 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 22:24:04,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:24:04,509 INFO L85 PathProgramCache]: Analyzing trace with hash -881492593, now seen corresponding path program 1 times [2023-11-23 22:24:04,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:24:04,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140326671] [2023-11-23 22:24:04,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:24:04,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:24:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:24:04,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:24:04,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:24:04,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140326671] [2023-11-23 22:24:04,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140326671] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:24:04,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:24:04,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:24:04,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051072563] [2023-11-23 22:24:04,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:24:04,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:24:04,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:24:04,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:24:04,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:24:04,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 144 [2023-11-23 22:24:04,704 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) [2023-11-23 22:24:04,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:24:04,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 144 [2023-11-23 22:24:04,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand