./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c --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/weaver/popl20-more-min-le-max.wvr.c -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 dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:46:33,164 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:46:33,224 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:46:33,229 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:46:33,229 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:46:33,255 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:46:33,257 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:46:33,257 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:46:33,258 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:46:33,261 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:46:33,261 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:46:33,261 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:46:33,262 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:46:33,263 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:46:33,263 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:46:33,263 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:46:33,263 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:46:33,264 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:46:33,264 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:46:33,264 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:46:33,264 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:46:33,264 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:46:33,265 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:46:33,265 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:46:33,265 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:46:33,265 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:46:33,265 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:46:33,266 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:46:33,266 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:46:33,266 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:46:33,267 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:46:33,267 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:46:33,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:46:33,267 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:46:33,268 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:46:33,268 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:46:33,273 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:46:33,274 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:46:33,274 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:46:33,274 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:46:33,274 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:46:33,274 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:46:33,274 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:46:33,275 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af [2024-01-27 15:46:33,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:46:33,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:46:33,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:46:33,530 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:46:33,531 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:46:33,532 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2024-01-27 15:46:34,499 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:46:34,672 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:46:34,673 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2024-01-27 15:46:34,682 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b901f7c7b/fb208cda68fa4dc6b77c12f0eef0b9be/FLAGa1429a15f [2024-01-27 15:46:34,694 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b901f7c7b/fb208cda68fa4dc6b77c12f0eef0b9be [2024-01-27 15:46:34,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:46:34,698 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:46:34,701 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:46:34,701 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:46:34,705 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:46:34,705 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:46:34" (1/1) ... [2024-01-27 15:46:34,706 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@351f9417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:46:34, skipping insertion in model container [2024-01-27 15:46:34,706 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:46:34" (1/1) ... [2024-01-27 15:46:34,725 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:46:34,871 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c[2525,2538] [2024-01-27 15:46:34,877 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:46:34,883 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:46:34,897 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c[2525,2538] [2024-01-27 15:46:34,900 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:46:34,910 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:46:34,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:46:34 WrapperNode [2024-01-27 15:46:34,911 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:46:34,912 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:46:34,912 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:46:34,912 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:46:34,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:46:34" (1/1) ... [2024-01-27 15:46:34,925 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:46:34" (1/1) ... [2024-01-27 15:46:34,939 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 106 [2024-01-27 15:46:34,942 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:46:34,943 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:46:34,943 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:46:34,944 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:46:34,952 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:46:34" (1/1) ... [2024-01-27 15:46:34,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:46:34" (1/1) ... [2024-01-27 15:46:34,954 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:46:34" (1/1) ... [2024-01-27 15:46:34,966 INFO L175 MemorySlicer]: Split 15 memory accesses to 5 slices as follows [2, 7, 2, 2, 2]. 47 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-27 15:46:34,966 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:46:34" (1/1) ... [2024-01-27 15:46:34,966 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:46:34" (1/1) ... [2024-01-27 15:46:34,975 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:46:34" (1/1) ... [2024-01-27 15:46:34,978 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:46:34" (1/1) ... [2024-01-27 15:46:34,980 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:46:34" (1/1) ... [2024-01-27 15:46:34,981 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:46:34" (1/1) ... [2024-01-27 15:46:34,983 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:46:34,983 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:46:34,984 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:46:34,984 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:46:34,985 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:46:34" (1/1) ... [2024-01-27 15:46:34,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:46:35,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:46:35,025 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 15:46:35,031 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 15:46:35,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:46:35,067 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:46:35,067 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:46:35,067 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:46:35,067 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:46:35,067 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:46:35,067 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:46:35,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:46:35,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:46:35,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:46:35,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:46:35,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 15:46:35,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:46:35,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:46:35,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:46:35,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:46:35,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:46:35,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 15:46:35,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:46:35,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:46:35,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-27 15:46:35,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:46:35,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:46:35,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:46:35,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:46:35,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:46:35,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:46:35,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 15:46:35,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:46:35,075 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 15:46:35,223 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:46:35,225 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:46:35,404 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:46:35,404 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:46:35,583 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:46:35,584 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-01-27 15:46:35,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:46:35 BoogieIcfgContainer [2024-01-27 15:46:35,584 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:46:35,586 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:46:35,586 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:46:35,588 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:46:35,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:46:34" (1/3) ... [2024-01-27 15:46:35,592 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee8f4fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:46:35, skipping insertion in model container [2024-01-27 15:46:35,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:46:34" (2/3) ... [2024-01-27 15:46:35,593 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee8f4fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:46:35, skipping insertion in model container [2024-01-27 15:46:35,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:46:35" (3/3) ... [2024-01-27 15:46:35,594 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2024-01-27 15:46:35,600 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:46:35,607 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:46:35,607 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:46:35,607 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:46:35,648 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-27 15:46:35,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 33 transitions, 87 flow [2024-01-27 15:46:35,719 INFO L124 PetriNetUnfolderBase]: 3/30 cut-off events. [2024-01-27 15:46:35,720 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:46:35,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 3/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2024-01-27 15:46:35,723 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 33 transitions, 87 flow [2024-01-27 15:46:35,726 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 29 transitions, 76 flow [2024-01-27 15:46:35,732 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:46:35,738 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;@49768ebb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:46:35,739 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-27 15:46:35,750 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:46:35,750 INFO L124 PetriNetUnfolderBase]: 3/28 cut-off events. [2024-01-27 15:46:35,750 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:46:35,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:46:35,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:46:35,751 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:46:35,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:46:35,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1856104863, now seen corresponding path program 1 times [2024-01-27 15:46:35,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:46:35,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448130762] [2024-01-27 15:46:35,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:46:35,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:46:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:46:36,069 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 15:46:36,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:46:36,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448130762] [2024-01-27 15:46:36,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448130762] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:46:36,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:46:36,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:46:36,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698819088] [2024-01-27 15:46:36,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:46:36,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:46:36,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:46:36,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:46:36,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:46:36,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-01-27 15:46:36,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 15:46:36,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:46:36,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-01-27 15:46:36,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:46:36,270 INFO L124 PetriNetUnfolderBase]: 328/557 cut-off events. [2024-01-27 15:46:36,270 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-01-27 15:46:36,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 557 events. 328/557 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2403 event pairs, 133 based on Foata normal form. 26/555 useless extension candidates. Maximal degree in co-relation 1020. Up to 354 conditions per place. [2024-01-27 15:46:36,280 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 33 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2024-01-27 15:46:36,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 178 flow [2024-01-27 15:46:36,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:46:36,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:46:36,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-01-27 15:46:36,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2024-01-27 15:46:36,292 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 76 flow. Second operand 4 states and 69 transitions. [2024-01-27 15:46:36,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 178 flow [2024-01-27 15:46:36,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 162 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-27 15:46:36,298 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 78 flow [2024-01-27 15:46:36,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2024-01-27 15:46:36,301 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2024-01-27 15:46:36,302 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 78 flow [2024-01-27 15:46:36,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 15:46:36,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:46:36,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:46:36,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:46:36,303 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:46:36,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:46:36,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1973716453, now seen corresponding path program 1 times [2024-01-27 15:46:36,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:46:36,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821718754] [2024-01-27 15:46:36,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:46:36,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:46:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:46:36,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:46:36,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:46:36,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821718754] [2024-01-27 15:46:36,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821718754] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:46:36,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:46:36,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:46:36,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595816324] [2024-01-27 15:46:36,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:46:36,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:46:36,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:46:36,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:46:36,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:46:36,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-01-27 15:46:36,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 15:46:36,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:46:36,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-01-27 15:46:36,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:46:36,567 INFO L124 PetriNetUnfolderBase]: 484/811 cut-off events. [2024-01-27 15:46:36,567 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2024-01-27 15:46:36,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1793 conditions, 811 events. 484/811 cut-off events. For 202/202 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3871 event pairs, 231 based on Foata normal form. 40/818 useless extension candidates. Maximal degree in co-relation 405. Up to 506 conditions per place. [2024-01-27 15:46:36,571 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 35 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2024-01-27 15:46:36,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 43 transitions, 192 flow [2024-01-27 15:46:36,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:46:36,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:46:36,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-01-27 15:46:36,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2024-01-27 15:46:36,575 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 78 flow. Second operand 4 states and 69 transitions. [2024-01-27 15:46:36,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 43 transitions, 192 flow [2024-01-27 15:46:36,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 43 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:46:36,581 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 88 flow [2024-01-27 15:46:36,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2024-01-27 15:46:36,582 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2024-01-27 15:46:36,583 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 88 flow [2024-01-27 15:46:36,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 15:46:36,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:46:36,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:46:36,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:46:36,587 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:46:36,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:46:36,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1343296788, now seen corresponding path program 1 times [2024-01-27 15:46:36,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:46:36,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347602990] [2024-01-27 15:46:36,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:46:36,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:46:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:46:36,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:46:36,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:46:36,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347602990] [2024-01-27 15:46:36,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347602990] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:46:36,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:46:36,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:46:36,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532466993] [2024-01-27 15:46:36,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:46:36,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:46:36,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:46:36,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:46:36,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:46:36,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-01-27 15:46:36,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 15:46:36,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:46:36,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-01-27 15:46:36,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:46:36,797 INFO L124 PetriNetUnfolderBase]: 484/822 cut-off events. [2024-01-27 15:46:36,797 INFO L125 PetriNetUnfolderBase]: For 283/283 co-relation queries the response was YES. [2024-01-27 15:46:36,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1968 conditions, 822 events. 484/822 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3939 event pairs, 405 based on Foata normal form. 1/794 useless extension candidates. Maximal degree in co-relation 469. Up to 745 conditions per place. [2024-01-27 15:46:36,801 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 25 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2024-01-27 15:46:36,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 144 flow [2024-01-27 15:46:36,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:46:36,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:46:36,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-01-27 15:46:36,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5050505050505051 [2024-01-27 15:46:36,803 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 88 flow. Second operand 3 states and 50 transitions. [2024-01-27 15:46:36,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 144 flow [2024-01-27 15:46:36,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 140 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:46:36,805 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 96 flow [2024-01-27 15:46:36,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2024-01-27 15:46:36,807 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2024-01-27 15:46:36,807 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 96 flow [2024-01-27 15:46:36,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 15:46:36,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:46:36,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:46:36,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:46:36,808 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:46:36,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:46:36,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1663225875, now seen corresponding path program 1 times [2024-01-27 15:46:36,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:46:36,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566061613] [2024-01-27 15:46:36,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:46:36,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:46:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:46:37,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:46:37,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:46:37,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566061613] [2024-01-27 15:46:37,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566061613] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:46:37,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305209992] [2024-01-27 15:46:37,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:46:37,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:46:37,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:46:37,148 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) [2024-01-27 15:46:37,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-27 15:46:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:46:37,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 27 conjunts are in the unsatisfiable core [2024-01-27 15:46:37,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:46:37,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-01-27 15:46:37,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-01-27 15:46:37,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:46:37,495 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:46:37,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:46:37,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305209992] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:46:37,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:46:37,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 16 [2024-01-27 15:46:37,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646942665] [2024-01-27 15:46:37,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:46:37,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-01-27 15:46:37,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:46:37,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-01-27 15:46:37,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-01-27 15:46:37,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-01-27 15:46:37,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 96 flow. Second operand has 16 states, 16 states have (on average 11.5) internal successors, (184), 16 states have internal predecessors, (184), 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 15:46:37,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:46:37,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-01-27 15:46:37,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:46:38,247 INFO L124 PetriNetUnfolderBase]: 1209/1948 cut-off events. [2024-01-27 15:46:38,247 INFO L125 PetriNetUnfolderBase]: For 465/465 co-relation queries the response was YES. [2024-01-27 15:46:38,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4548 conditions, 1948 events. 1209/1948 cut-off events. For 465/465 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9768 event pairs, 80 based on Foata normal form. 2/1942 useless extension candidates. Maximal degree in co-relation 4535. Up to 523 conditions per place. [2024-01-27 15:46:38,252 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 0 selfloop transitions, 0 changer transitions 150/150 dead transitions. [2024-01-27 15:46:38,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 150 transitions, 731 flow [2024-01-27 15:46:38,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-01-27 15:46:38,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-01-27 15:46:38,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 253 transitions. [2024-01-27 15:46:38,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-01-27 15:46:38,256 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 96 flow. Second operand 16 states and 253 transitions. [2024-01-27 15:46:38,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 150 transitions, 731 flow [2024-01-27 15:46:38,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 150 transitions, 727 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-27 15:46:38,261 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2024-01-27 15:46:38,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2024-01-27 15:46:38,262 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2024-01-27 15:46:38,262 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2024-01-27 15:46:38,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.5) internal successors, (184), 16 states have internal predecessors, (184), 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 15:46:38,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-01-27 15:46:38,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-01-27 15:46:38,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-01-27 15:46:38,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-01-27 15:46:38,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-01-27 15:46:38,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:46:38,477 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-01-27 15:46:38,479 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 15:46:38,479 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 15:46:38,485 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 03:46:38 BasicIcfg [2024-01-27 15:46:38,485 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 15:46:38,485 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-01-27 15:46:38,485 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-01-27 15:46:38,485 INFO L274 PluginConnector]: Witness Printer initialized [2024-01-27 15:46:38,486 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:46:35" (3/4) ... [2024-01-27 15:46:38,487 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-01-27 15:46:38,492 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-01-27 15:46:38,492 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-01-27 15:46:38,492 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-01-27 15:46:38,497 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 97 nodes and edges [2024-01-27 15:46:38,497 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2024-01-27 15:46:38,497 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-01-27 15:46:38,498 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-01-27 15:46:38,563 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-01-27 15:46:38,563 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-01-27 15:46:38,563 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-01-27 15:46:38,564 INFO L158 Benchmark]: Toolchain (without parser) took 3866.01ms. Allocated memory was 192.9MB in the beginning and 232.8MB in the end (delta: 39.8MB). Free memory was 112.7MB in the beginning and 142.2MB in the end (delta: -29.6MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2024-01-27 15:46:38,564 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 192.9MB. Free memory is still 159.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:46:38,564 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.36ms. Allocated memory is still 192.9MB. Free memory was 112.5MB in the beginning and 158.4MB in the end (delta: -46.0MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2024-01-27 15:46:38,564 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.20ms. Allocated memory is still 192.9MB. Free memory was 158.4MB in the beginning and 156.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:46:38,564 INFO L158 Benchmark]: Boogie Preprocessor took 39.50ms. Allocated memory is still 192.9MB. Free memory was 156.4MB in the beginning and 154.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:46:38,565 INFO L158 Benchmark]: RCFGBuilder took 600.96ms. Allocated memory is still 192.9MB. Free memory was 154.3MB in the beginning and 126.1MB in the end (delta: 28.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-01-27 15:46:38,565 INFO L158 Benchmark]: TraceAbstraction took 2899.30ms. Allocated memory was 192.9MB in the beginning and 232.8MB in the end (delta: 39.8MB). Free memory was 126.1MB in the beginning and 147.9MB in the end (delta: -21.8MB). Peak memory consumption was 104.5MB. Max. memory is 16.1GB. [2024-01-27 15:46:38,565 INFO L158 Benchmark]: Witness Printer took 77.96ms. Allocated memory is still 232.8MB. Free memory was 147.9MB in the beginning and 142.2MB in the end (delta: 5.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 15:46:38,566 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 192.9MB. Free memory is still 159.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 210.36ms. Allocated memory is still 192.9MB. Free memory was 112.5MB in the beginning and 158.4MB in the end (delta: -46.0MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.20ms. Allocated memory is still 192.9MB. Free memory was 158.4MB in the beginning and 156.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.50ms. Allocated memory is still 192.9MB. Free memory was 156.4MB in the beginning and 154.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 600.96ms. Allocated memory is still 192.9MB. Free memory was 154.3MB in the beginning and 126.1MB in the end (delta: 28.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2899.30ms. Allocated memory was 192.9MB in the beginning and 232.8MB in the end (delta: 39.8MB). Free memory was 126.1MB in the beginning and 147.9MB in the end (delta: -21.8MB). Peak memory consumption was 104.5MB. Max. memory is 16.1GB. * Witness Printer took 77.96ms. Allocated memory is still 232.8MB. Free memory was 147.9MB in the beginning and 142.2MB in the end (delta: 5.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 98]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 48 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 225 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 212 mSDsluCounter, 56 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 54 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 603 IncrementalHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 2 mSDtfsCounter, 603 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=3, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 133 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 1168 SizeOfPredicates, 11 NumberOfNonLiveVariables, 222 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 5/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-27 15:46:38,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE