./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 7724a2de 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-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:58:41,196 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:58:41,263 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 16:58:41,268 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:58:41,268 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:58:41,291 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:58:41,292 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:58:41,292 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:58:41,293 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:58:41,296 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:58:41,296 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:58:41,297 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:58:41,297 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:58:41,298 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:58:41,299 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:58:41,299 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:58:41,299 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:58:41,299 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:58:41,299 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 16:58:41,300 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:58:41,300 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:58:41,300 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:58:41,301 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:58:41,301 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:58:41,301 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:58:41,301 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:58:41,301 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:58:41,302 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:58:41,302 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:58:41,302 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:58:41,303 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:58:41,303 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:58:41,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:58:41,304 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:58:41,304 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:58:41,304 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:58:41,304 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 16:58:41,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 16:58:41,305 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:58:41,305 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:58:41,305 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:58:41,305 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:58:41,305 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:58:41,306 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af [2024-06-27 16:58:41,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:58:41,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:58:41,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:58:41,583 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:58:41,584 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:58:41,585 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2024-06-27 16:58:42,718 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:58:42,878 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:58:42,880 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2024-06-27 16:58:42,888 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d73b55461/b0a80040e4b5409eaeee0f28099c259c/FLAG37a527f96 [2024-06-27 16:58:42,901 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d73b55461/b0a80040e4b5409eaeee0f28099c259c [2024-06-27 16:58:42,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:58:42,904 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:58:42,906 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:58:42,907 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:58:42,910 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:58:42,911 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:58:42" (1/1) ... [2024-06-27 16:58:42,912 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29cdbfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:58:42, skipping insertion in model container [2024-06-27 16:58:42,912 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:58:42" (1/1) ... [2024-06-27 16:58:42,932 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:58:43,099 WARN L247 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] [2024-06-27 16:58:43,112 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:58:43,119 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:58:43,150 WARN L247 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] [2024-06-27 16:58:43,153 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:58:43,167 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:58:43,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:58:43 WrapperNode [2024-06-27 16:58:43,169 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:58:43,170 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:58:43,170 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:58:43,170 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:58:43,175 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:58:43" (1/1) ... [2024-06-27 16:58:43,187 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:58:43" (1/1) ... [2024-06-27 16:58:43,208 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 88 [2024-06-27 16:58:43,209 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:58:43,210 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:58:43,210 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:58:43,210 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:58:43,218 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:58:43" (1/1) ... [2024-06-27 16:58:43,219 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:58:43" (1/1) ... [2024-06-27 16:58:43,229 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:58:43" (1/1) ... [2024-06-27 16:58:43,249 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-06-27 16:58:43,250 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:58:43" (1/1) ... [2024-06-27 16:58:43,250 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:58:43" (1/1) ... [2024-06-27 16:58:43,259 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:58:43" (1/1) ... [2024-06-27 16:58:43,281 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:58:43" (1/1) ... [2024-06-27 16:58:43,282 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:58:43" (1/1) ... [2024-06-27 16:58:43,283 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:58:43" (1/1) ... [2024-06-27 16:58:43,284 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:58:43,285 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:58:43,285 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:58:43,285 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:58:43,286 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:58:43" (1/1) ... [2024-06-27 16:58:43,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:58:43,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:58:43,334 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) [2024-06-27 16:58:43,336 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 [2024-06-27 16:58:43,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:58:43,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 16:58:43,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 16:58:43,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 16:58:43,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 16:58:43,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-27 16:58:43,379 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-27 16:58:43,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 16:58:43,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 16:58:43,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 16:58:43,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 16:58:43,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 16:58:43,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 16:58:43,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-27 16:58:43,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:58:43,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:58:43,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 16:58:43,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 16:58:43,383 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 16:58:43,484 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:58:43,486 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:58:43,727 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:58:43,728 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:58:43,877 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:58:43,878 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-06-27 16:58:43,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:58:43 BoogieIcfgContainer [2024-06-27 16:58:43,879 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:58:43,880 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:58:43,881 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:58:43,883 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:58:43,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:58:42" (1/3) ... [2024-06-27 16:58:43,884 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a6a4bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:58:43, skipping insertion in model container [2024-06-27 16:58:43,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:58:43" (2/3) ... [2024-06-27 16:58:43,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a6a4bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:58:43, skipping insertion in model container [2024-06-27 16:58:43,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:58:43" (3/3) ... [2024-06-27 16:58:43,887 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2024-06-27 16:58:43,893 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:58:43,900 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:58:43,900 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 16:58:43,901 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:58:43,935 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-27 16:58:43,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 83 flow [2024-06-27 16:58:43,995 INFO L124 PetriNetUnfolderBase]: 3/28 cut-off events. [2024-06-27 16:58:43,995 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 16:58:43,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 28 events. 3/28 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. 0/24 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2024-06-27 16:58:43,998 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 83 flow [2024-06-27 16:58:44,001 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 27 transitions, 72 flow [2024-06-27 16:58:44,021 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:58:44,028 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;@20da495a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:58:44,029 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 16:58:44,041 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:58:44,041 INFO L124 PetriNetUnfolderBase]: 3/26 cut-off events. [2024-06-27 16:58:44,041 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 16:58:44,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:58:44,042 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] [2024-06-27 16:58:44,043 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)] === [2024-06-27 16:58:44,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:58:44,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1755584056, now seen corresponding path program 1 times [2024-06-27 16:58:44,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:58:44,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636253715] [2024-06-27 16:58:44,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:58:44,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:58:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:58:44,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:58:44,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:58:44,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636253715] [2024-06-27 16:58:44,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636253715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:58:44,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:58:44,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:58:44,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043647028] [2024-06-27 16:58:44,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:58:44,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:58:44,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:58:44,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:58:44,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:58:44,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 16:58:44,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2024-06-27 16:58:44,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:58:44,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 16:58:44,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:58:44,551 INFO L124 PetriNetUnfolderBase]: 317/538 cut-off events. [2024-06-27 16:58:44,551 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-06-27 16:58:44,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1103 conditions, 538 events. 317/538 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2302 event pairs, 143 based on Foata normal form. 26/538 useless extension candidates. Maximal degree in co-relation 1001. Up to 331 conditions per place. [2024-06-27 16:58:44,557 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 30 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2024-06-27 16:58:44,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 166 flow [2024-06-27 16:58:44,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 16:58:44,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 16:58:44,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-06-27 16:58:44,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532258064516129 [2024-06-27 16:58:44,568 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 72 flow. Second operand 4 states and 66 transitions. [2024-06-27 16:58:44,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 166 flow [2024-06-27 16:58:44,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 38 transitions, 150 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 16:58:44,574 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 74 flow [2024-06-27 16:58:44,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2024-06-27 16:58:44,577 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2024-06-27 16:58:44,578 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 74 flow [2024-06-27 16:58:44,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2024-06-27 16:58:44,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:58:44,578 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] [2024-06-27 16:58:44,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 16:58:44,579 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)] === [2024-06-27 16:58:44,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:58:44,579 INFO L85 PathProgramCache]: Analyzing trace with hash 282767181, now seen corresponding path program 1 times [2024-06-27 16:58:44,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:58:44,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715040579] [2024-06-27 16:58:44,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:58:44,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:58:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:58:44,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 16:58:44,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:58:44,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715040579] [2024-06-27 16:58:44,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715040579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:58:44,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:58:44,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:58:44,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053927023] [2024-06-27 16:58:44,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:58:44,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:58:44,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:58:44,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:58:44,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:58:44,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 16:58:44,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 74 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) [2024-06-27 16:58:44,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:58:44,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 16:58:44,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:58:44,772 INFO L124 PetriNetUnfolderBase]: 465/792 cut-off events. [2024-06-27 16:58:44,772 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-06-27 16:58:44,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1741 conditions, 792 events. 465/792 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3737 event pairs, 201 based on Foata normal form. 38/801 useless extension candidates. Maximal degree in co-relation 274. Up to 485 conditions per place. [2024-06-27 16:58:44,777 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 33 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2024-06-27 16:58:44,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 184 flow [2024-06-27 16:58:44,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 16:58:44,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 16:58:44,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-06-27 16:58:44,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403225806451613 [2024-06-27 16:58:44,779 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 74 flow. Second operand 4 states and 67 transitions. [2024-06-27 16:58:44,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 184 flow [2024-06-27 16:58:44,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 16:58:44,781 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 84 flow [2024-06-27 16:58:44,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2024-06-27 16:58:44,782 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2024-06-27 16:58:44,782 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 84 flow [2024-06-27 16:58:44,782 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) [2024-06-27 16:58:44,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:58:44,782 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] [2024-06-27 16:58:44,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 16:58:44,783 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)] === [2024-06-27 16:58:44,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:58:44,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1129487865, now seen corresponding path program 1 times [2024-06-27 16:58:44,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:58:44,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741133442] [2024-06-27 16:58:44,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:58:44,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:58:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:58:44,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 16:58:44,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:58:44,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741133442] [2024-06-27 16:58:44,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741133442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:58:44,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:58:44,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 16:58:44,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112898400] [2024-06-27 16:58:44,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:58:44,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:58:44,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:58:44,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:58:44,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:58:44,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 16:58:44,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-06-27 16:58:44,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:58:44,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 16:58:44,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:58:44,927 INFO L124 PetriNetUnfolderBase]: 465/789 cut-off events. [2024-06-27 16:58:44,927 INFO L125 PetriNetUnfolderBase]: For 273/273 co-relation queries the response was YES. [2024-06-27 16:58:44,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1892 conditions, 789 events. 465/789 cut-off events. For 273/273 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3751 event pairs, 388 based on Foata normal form. 1/764 useless extension candidates. Maximal degree in co-relation 457. Up to 712 conditions per place. [2024-06-27 16:58:44,931 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 23 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2024-06-27 16:58:44,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 136 flow [2024-06-27 16:58:44,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:58:44,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:58:44,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-06-27 16:58:44,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-06-27 16:58:44,933 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 84 flow. Second operand 3 states and 48 transitions. [2024-06-27 16:58:44,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 136 flow [2024-06-27 16:58:44,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 16:58:44,935 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 92 flow [2024-06-27 16:58:44,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2024-06-27 16:58:44,936 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2024-06-27 16:58:44,936 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 92 flow [2024-06-27 16:58:44,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-06-27 16:58:44,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:58:44,936 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] [2024-06-27 16:58:44,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 16:58:44,937 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)] === [2024-06-27 16:58:44,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:58:44,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1450538109, now seen corresponding path program 1 times [2024-06-27 16:58:44,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:58:44,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999886232] [2024-06-27 16:58:44,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:58:44,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:58:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:58:45,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 16:58:45,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:58:45,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999886232] [2024-06-27 16:58:45,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999886232] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:58:45,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299318067] [2024-06-27 16:58:45,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:58:45,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:58:45,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:58:45,257 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) [2024-06-27 16:58:45,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-27 16:58:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:58:45,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 29 conjunts are in the unsatisfiable core [2024-06-27 16:58:45,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:58:45,414 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 [2024-06-27 16:58:45,548 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 [2024-06-27 16:58:45,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:58:45,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:58:45,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 16:58:45,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299318067] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:58:45,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:58:45,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 16 [2024-06-27 16:58:45,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233650446] [2024-06-27 16:58:45,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:58:45,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-06-27 16:58:45,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:58:45,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-06-27 16:58:45,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-06-27 16:58:45,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 16:58:45,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 92 flow. Second operand has 16 states, 16 states have (on average 11.125) internal successors, (178), 16 states have internal predecessors, (178), 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) [2024-06-27 16:58:45,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:58:45,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 16:58:45,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:58:46,330 INFO L124 PetriNetUnfolderBase]: 1150/1846 cut-off events. [2024-06-27 16:58:46,331 INFO L125 PetriNetUnfolderBase]: For 479/479 co-relation queries the response was YES. [2024-06-27 16:58:46,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4327 conditions, 1846 events. 1150/1846 cut-off events. For 479/479 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9230 event pairs, 78 based on Foata normal form. 2/1842 useless extension candidates. Maximal degree in co-relation 4314. Up to 481 conditions per place. [2024-06-27 16:58:46,335 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 0 selfloop transitions, 0 changer transitions 140/140 dead transitions. [2024-06-27 16:58:46,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 140 transitions, 691 flow [2024-06-27 16:58:46,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-27 16:58:46,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-27 16:58:46,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 243 transitions. [2024-06-27 16:58:46,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4899193548387097 [2024-06-27 16:58:46,338 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 92 flow. Second operand 16 states and 243 transitions. [2024-06-27 16:58:46,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 140 transitions, 691 flow [2024-06-27 16:58:46,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 140 transitions, 687 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 16:58:46,340 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2024-06-27 16:58:46,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2024-06-27 16:58:46,341 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 13 predicate places. [2024-06-27 16:58:46,341 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2024-06-27 16:58:46,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.125) internal successors, (178), 16 states have internal predecessors, (178), 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) [2024-06-27 16:58:46,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-06-27 16:58:46,344 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-06-27 16:58:46,344 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 16:58:46,344 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 16:58:46,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-27 16:58:46,556 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 [2024-06-27 16:58:46,556 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-06-27 16:58:46,559 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 16:58:46,559 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 16:58:46,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 04:58:46 BasicIcfg [2024-06-27 16:58:46,563 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 16:58:46,563 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-06-27 16:58:46,563 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-06-27 16:58:46,564 INFO L274 PluginConnector]: Witness Printer initialized [2024-06-27 16:58:46,564 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:58:43" (3/4) ... [2024-06-27 16:58:46,565 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-06-27 16:58:46,568 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-06-27 16:58:46,568 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-06-27 16:58:46,568 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-06-27 16:58:46,571 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 88 nodes and edges [2024-06-27 16:58:46,571 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2024-06-27 16:58:46,571 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-06-27 16:58:46,572 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-06-27 16:58:46,643 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-06-27 16:58:46,643 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-06-27 16:58:46,643 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-06-27 16:58:46,644 INFO L158 Benchmark]: Toolchain (without parser) took 3739.88ms. Allocated memory was 184.5MB in the beginning and 247.5MB in the end (delta: 62.9MB). Free memory was 115.9MB in the beginning and 117.7MB in the end (delta: -1.8MB). Peak memory consumption was 61.3MB. Max. memory is 16.1GB. [2024-06-27 16:58:46,644 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 111.1MB. Free memory is still 85.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 16:58:46,646 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.25ms. Allocated memory is still 184.5MB. Free memory was 115.7MB in the beginning and 103.1MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-06-27 16:58:46,647 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.86ms. Allocated memory is still 184.5MB. Free memory was 103.1MB in the beginning and 101.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 16:58:46,647 INFO L158 Benchmark]: Boogie Preprocessor took 74.61ms. Allocated memory is still 184.5MB. Free memory was 101.3MB in the beginning and 157.1MB in the end (delta: -55.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-06-27 16:58:46,647 INFO L158 Benchmark]: RCFGBuilder took 594.04ms. Allocated memory is still 184.5MB. Free memory was 157.1MB in the beginning and 121.0MB in the end (delta: 36.2MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-06-27 16:58:46,648 INFO L158 Benchmark]: TraceAbstraction took 2682.48ms. Allocated memory was 184.5MB in the beginning and 247.5MB in the end (delta: 62.9MB). Free memory was 121.0MB in the beginning and 123.3MB in the end (delta: -2.4MB). Peak memory consumption was 61.3MB. Max. memory is 16.1GB. [2024-06-27 16:58:46,648 INFO L158 Benchmark]: Witness Printer took 80.34ms. Allocated memory is still 247.5MB. Free memory was 123.3MB in the beginning and 117.7MB in the end (delta: 5.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 16:58:46,649 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 111.1MB. Free memory is still 85.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.25ms. Allocated memory is still 184.5MB. Free memory was 115.7MB in the beginning and 103.1MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.86ms. Allocated memory is still 184.5MB. Free memory was 103.1MB in the beginning and 101.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.61ms. Allocated memory is still 184.5MB. Free memory was 101.3MB in the beginning and 157.1MB in the end (delta: -55.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 594.04ms. Allocated memory is still 184.5MB. Free memory was 157.1MB in the beginning and 121.0MB in the end (delta: 36.2MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2682.48ms. Allocated memory was 184.5MB in the beginning and 247.5MB in the end (delta: 62.9MB). Free memory was 121.0MB in the beginning and 123.3MB in the end (delta: -2.4MB). Peak memory consumption was 61.3MB. Max. memory is 16.1GB. * Witness Printer took 80.34ms. Allocated memory is still 247.5MB. Free memory was 123.3MB in the beginning and 117.7MB 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, 46 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: 2.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 182 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 169 mSDsluCounter, 68 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 68 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 671 IncrementalHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 0 mSDtfsCounter, 671 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred 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, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 1120 SizeOfPredicates, 11 NumberOfNonLiveVariables, 181 ConjunctsInSsa, 29 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! [2024-06-27 16:58:46,681 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