./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-sre-symm.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/chl-sre-symm.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/chl-sre-symm.wvr.c ./goblint.2024-05-07_14-17-48.files/protection/chl-sre-symm.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 12:53:05,506 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 12:53:05,584 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 12:53:05,590 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 12:53:05,591 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 12:53:05,615 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 12:53:05,615 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 12:53:05,616 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 12:53:05,616 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 12:53:05,619 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 12:53:05,620 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 12:53:05,620 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 12:53:05,621 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 12:53:05,622 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 12:53:05,622 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 12:53:05,622 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 12:53:05,622 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 12:53:05,623 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 12:53:05,623 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 12:53:05,623 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 12:53:05,624 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 12:53:05,625 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 12:53:05,625 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 12:53:05,625 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 12:53:05,625 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 12:53:05,625 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 12:53:05,626 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 12:53:05,626 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 12:53:05,626 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 12:53:05,626 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 12:53:05,627 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 12:53:05,627 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 12:53:05,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:53:05,628 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 12:53:05,628 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 12:53:05,628 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 12:53:05,628 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 12:53:05,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 12:53:05,629 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 12:53:05,629 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 12:53:05,629 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 12:53:05,629 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 12:53:05,630 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 12:53:05,630 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 12:53:05,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 12:53:05,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 12:53:05,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 12:53:05,852 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 12:53:05,852 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 12:53:05,853 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/chl-sre-symm.wvr.yml/witness.yml [2024-05-12 12:53:05,940 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 12:53:05,941 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 12:53:05,941 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-sre-symm.wvr.c [2024-05-12 12:53:07,129 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 12:53:07,262 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 12:53:07,262 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-symm.wvr.c [2024-05-12 12:53:07,268 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/027be2eb6/8b7860206c1049e7aef1bc55cb0aff81/FLAGb57f2d065 [2024-05-12 12:53:07,277 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/027be2eb6/8b7860206c1049e7aef1bc55cb0aff81 [2024-05-12 12:53:07,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 12:53:07,279 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 12:53:07,283 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 12:53:07,283 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 12:53:07,287 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 12:53:07,287 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:53:05" (1/2) ... [2024-05-12 12:53:07,288 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1626dfc6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:53:07, skipping insertion in model container [2024-05-12 12:53:07,288 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:53:05" (1/2) ... [2024-05-12 12:53:07,289 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@27897ab8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:53:07, skipping insertion in model container [2024-05-12 12:53:07,289 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:53:07" (2/2) ... [2024-05-12 12:53:07,290 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1626dfc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07, skipping insertion in model container [2024-05-12 12:53:07,290 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:53:07" (2/2) ... [2024-05-12 12:53:07,290 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 12:53:07,300 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 12:53:07,301 INFO L97 edCorrectnessWitness]: Location invariant before [L63-L63] (! multithreaded || ((((-128 <= result_3 && -1 <= result_3) && result_3 <= 1) && result_3 <= 127) && ((result_3 == -1 || result_3 == 0) || result_3 == 1))) && (! multithreaded || ((((-128 <= result_2 && -1 <= result_2) && result_2 <= 1) && result_2 <= 127) && ((result_2 == -1 || result_2 == 0) || result_2 == 1))) [2024-05-12 12:53:07,301 INFO L97 edCorrectnessWitness]: Location invariant before [L62-L62] (! multithreaded || ((((-128 <= result_3 && -1 <= result_3) && result_3 <= 1) && result_3 <= 127) && ((result_3 == -1 || result_3 == 0) || result_3 == 1))) && (! multithreaded || ((((-128 <= result_2 && -1 <= result_2) && result_2 <= 1) && result_2 <= 127) && ((result_2 == -1 || result_2 == 0) || result_2 == 1))) [2024-05-12 12:53:07,301 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 12:53:07,302 INFO L106 edCorrectnessWitness]: ghost_update [L61-L61] multithreaded = 1; [2024-05-12 12:53:07,315 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 12:53:07,477 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-symm.wvr.c[2133,2146] [2024-05-12 12:53:07,482 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:53:07,489 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 12:53:07,530 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-symm.wvr.c[2133,2146] [2024-05-12 12:53:07,531 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:53:07,565 INFO L206 MainTranslator]: Completed translation [2024-05-12 12:53:07,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07 WrapperNode [2024-05-12 12:53:07,565 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 12:53:07,566 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 12:53:07,566 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 12:53:07,566 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 12:53:07,588 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07" (1/1) ... [2024-05-12 12:53:07,602 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07" (1/1) ... [2024-05-12 12:53:07,645 INFO L138 Inliner]: procedures = 21, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 66 [2024-05-12 12:53:07,647 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 12:53:07,647 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 12:53:07,648 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 12:53:07,648 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 12:53:07,657 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07" (1/1) ... [2024-05-12 12:53:07,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07" (1/1) ... [2024-05-12 12:53:07,665 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07" (1/1) ... [2024-05-12 12:53:07,686 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-05-12 12:53:07,686 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07" (1/1) ... [2024-05-12 12:53:07,687 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07" (1/1) ... [2024-05-12 12:53:07,700 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07" (1/1) ... [2024-05-12 12:53:07,705 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07" (1/1) ... [2024-05-12 12:53:07,706 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07" (1/1) ... [2024-05-12 12:53:07,712 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07" (1/1) ... [2024-05-12 12:53:07,714 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 12:53:07,715 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 12:53:07,715 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 12:53:07,716 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 12:53:07,716 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07" (1/1) ... [2024-05-12 12:53:07,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:53:07,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:53:07,911 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) [2024-05-12 12:53:07,932 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 [2024-05-12 12:53:07,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 12:53:07,952 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-05-12 12:53:07,952 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-05-12 12:53:07,952 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-05-12 12:53:07,952 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-05-12 12:53:07,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 12:53:07,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 12:53:07,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 12:53:07,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 12:53:07,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 12:53:07,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 12:53:07,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 12:53:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 12:53:07,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 12:53:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-05-12 12:53:07,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-05-12 12:53:07,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-05-12 12:53:07,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 12:53:07,956 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 12:53:08,077 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 12:53:08,079 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 12:53:08,360 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 12:53:08,361 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 12:53:08,493 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 12:53:08,496 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 12:53:08,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:53:08 BoogieIcfgContainer [2024-05-12 12:53:08,517 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 12:53:08,519 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 12:53:08,519 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 12:53:08,521 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 12:53:08,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:53:05" (1/4) ... [2024-05-12 12:53:08,523 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c73a113 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 12:53:08, skipping insertion in model container [2024-05-12 12:53:08,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 12:53:07" (2/4) ... [2024-05-12 12:53:08,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c73a113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:53:08, skipping insertion in model container [2024-05-12 12:53:08,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:07" (3/4) ... [2024-05-12 12:53:08,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c73a113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:53:08, skipping insertion in model container [2024-05-12 12:53:08,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:53:08" (4/4) ... [2024-05-12 12:53:08,529 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-sre-symm.wvr.c [2024-05-12 12:53:08,542 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 12:53:08,543 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-05-12 12:53:08,543 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 12:53:08,581 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-05-12 12:53:08,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 21 transitions, 56 flow [2024-05-12 12:53:08,627 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2024-05-12 12:53:08,628 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-05-12 12:53:08,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 19 events. 0/19 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-05-12 12:53:08,629 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 21 transitions, 56 flow [2024-05-12 12:53:08,631 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 18 transitions, 48 flow [2024-05-12 12:53:08,637 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 12:53:08,642 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=false, 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;@13f37769, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 12:53:08,643 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-05-12 12:53:08,647 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 12:53:08,647 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 12:53:08,647 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:53:08,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:08,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 12:53:08,648 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:53:08,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:08,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1731011616, now seen corresponding path program 1 times [2024-05-12 12:53:08,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:08,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618252864] [2024-05-12 12:53:08,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:08,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:08,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:08,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:08,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618252864] [2024-05-12 12:53:08,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618252864] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:08,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:08,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 12:53:08,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883818290] [2024-05-12 12:53:08,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:08,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:53:09,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:09,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:53:09,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:53:09,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-05-12 12:53:09,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 18 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2024-05-12 12:53:09,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:09,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-05-12 12:53:09,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:09,065 INFO L124 PetriNetUnfolderBase]: 16/48 cut-off events. [2024-05-12 12:53:09,066 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-05-12 12:53:09,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 48 events. 16/48 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 92 event pairs, 3 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 74. Up to 39 conditions per place. [2024-05-12 12:53:09,068 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 21 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2024-05-12 12:53:09,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 25 transitions, 113 flow [2024-05-12 12:53:09,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:53:09,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:53:09,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 35 transitions. [2024-05-12 12:53:09,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-05-12 12:53:09,078 INFO L175 Difference]: Start difference. First operand has 25 places, 18 transitions, 48 flow. Second operand 3 states and 35 transitions. [2024-05-12 12:53:09,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 25 transitions, 113 flow [2024-05-12 12:53:09,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 25 transitions, 103 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 12:53:09,082 INFO L231 Difference]: Finished difference. Result has 24 places, 20 transitions, 61 flow [2024-05-12 12:53:09,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=24, PETRI_TRANSITIONS=20} [2024-05-12 12:53:09,086 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -1 predicate places. [2024-05-12 12:53:09,086 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 20 transitions, 61 flow [2024-05-12 12:53:09,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2024-05-12 12:53:09,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:09,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:53:09,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 12:53:09,087 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:53:09,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:09,088 INFO L85 PathProgramCache]: Analyzing trace with hash 2121753056, now seen corresponding path program 1 times [2024-05-12 12:53:09,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:09,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211442302] [2024-05-12 12:53:09,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:09,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:09,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:09,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:09,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211442302] [2024-05-12 12:53:09,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211442302] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:09,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:09,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:53:09,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616602857] [2024-05-12 12:53:09,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:09,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:53:09,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:09,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:53:09,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:53:09,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-05-12 12:53:09,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 61 flow. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2024-05-12 12:53:09,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:09,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-05-12 12:53:09,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:09,540 INFO L124 PetriNetUnfolderBase]: 15/45 cut-off events. [2024-05-12 12:53:09,540 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-05-12 12:53:09,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 45 events. 15/45 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 5 based on Foata normal form. 2/47 useless extension candidates. Maximal degree in co-relation 46. Up to 23 conditions per place. [2024-05-12 12:53:09,542 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 19 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2024-05-12 12:53:09,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 23 transitions, 110 flow [2024-05-12 12:53:09,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:53:09,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:53:09,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2024-05-12 12:53:09,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-05-12 12:53:09,544 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 61 flow. Second operand 3 states and 32 transitions. [2024-05-12 12:53:09,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 23 transitions, 110 flow [2024-05-12 12:53:09,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 23 transitions, 107 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:53:09,546 INFO L231 Difference]: Finished difference. Result has 25 places, 19 transitions, 65 flow [2024-05-12 12:53:09,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=25, PETRI_TRANSITIONS=19} [2024-05-12 12:53:09,549 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2024-05-12 12:53:09,549 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 19 transitions, 65 flow [2024-05-12 12:53:09,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2024-05-12 12:53:09,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:09,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:53:09,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 12:53:09,554 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:53:09,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:09,557 INFO L85 PathProgramCache]: Analyzing trace with hash 103012484, now seen corresponding path program 1 times [2024-05-12 12:53:09,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:09,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405599992] [2024-05-12 12:53:09,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:09,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:09,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:09,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:09,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405599992] [2024-05-12 12:53:09,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405599992] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:09,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:09,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:53:09,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216649105] [2024-05-12 12:53:09,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:09,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:53:09,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:09,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:53:09,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:53:09,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-05-12 12:53:09,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 19 transitions, 65 flow. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-05-12 12:53:09,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:09,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-05-12 12:53:09,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:09,774 INFO L124 PetriNetUnfolderBase]: 14/43 cut-off events. [2024-05-12 12:53:09,775 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-05-12 12:53:09,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 43 events. 14/43 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 61 event pairs, 4 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 51. Up to 29 conditions per place. [2024-05-12 12:53:09,776 INFO L140 encePairwiseOnDemand]: 18/21 looper letters, 20 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2024-05-12 12:53:09,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 24 transitions, 122 flow [2024-05-12 12:53:09,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:53:09,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:53:09,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2024-05-12 12:53:09,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-05-12 12:53:09,778 INFO L175 Difference]: Start difference. First operand has 25 places, 19 transitions, 65 flow. Second operand 3 states and 32 transitions. [2024-05-12 12:53:09,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 24 transitions, 122 flow [2024-05-12 12:53:09,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 24 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:53:09,781 INFO L231 Difference]: Finished difference. Result has 26 places, 19 transitions, 70 flow [2024-05-12 12:53:09,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=26, PETRI_TRANSITIONS=19} [2024-05-12 12:53:09,782 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2024-05-12 12:53:09,782 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 70 flow [2024-05-12 12:53:09,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-05-12 12:53:09,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:09,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:53:09,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 12:53:09,784 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:53:09,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:09,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1101580530, now seen corresponding path program 1 times [2024-05-12 12:53:09,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:09,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759535035] [2024-05-12 12:53:09,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:09,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:09,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:09,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:09,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759535035] [2024-05-12 12:53:09,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759535035] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:09,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:09,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:53:09,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811805787] [2024-05-12 12:53:09,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:09,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:53:09,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:09,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:53:09,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:53:09,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-05-12 12:53:09,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2024-05-12 12:53:09,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:09,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-05-12 12:53:09,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:10,016 INFO L124 PetriNetUnfolderBase]: 14/42 cut-off events. [2024-05-12 12:53:10,016 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-05-12 12:53:10,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 42 events. 14/42 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 4 based on Foata normal form. 1/43 useless extension candidates. Maximal degree in co-relation 34. Up to 27 conditions per place. [2024-05-12 12:53:10,017 INFO L140 encePairwiseOnDemand]: 18/21 looper letters, 19 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2024-05-12 12:53:10,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 23 transitions, 117 flow [2024-05-12 12:53:10,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 12:53:10,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 12:53:10,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 34 transitions. [2024-05-12 12:53:10,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-05-12 12:53:10,018 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 70 flow. Second operand 4 states and 34 transitions. [2024-05-12 12:53:10,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 23 transitions, 117 flow [2024-05-12 12:53:10,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 23 transitions, 105 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 12:53:10,019 INFO L231 Difference]: Finished difference. Result has 24 places, 18 transitions, 56 flow [2024-05-12 12:53:10,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=56, PETRI_PLACES=24, PETRI_TRANSITIONS=18} [2024-05-12 12:53:10,020 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -1 predicate places. [2024-05-12 12:53:10,020 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 18 transitions, 56 flow [2024-05-12 12:53:10,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2024-05-12 12:53:10,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:10,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:53:10,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 12:53:10,021 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:53:10,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:10,022 INFO L85 PathProgramCache]: Analyzing trace with hash 149014580, now seen corresponding path program 1 times [2024-05-12 12:53:10,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:10,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394880908] [2024-05-12 12:53:10,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:10,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:10,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:10,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:10,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394880908] [2024-05-12 12:53:10,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394880908] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:10,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:10,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:53:10,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960087631] [2024-05-12 12:53:10,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:10,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:53:10,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:10,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:53:10,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:53:10,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2024-05-12 12:53:10,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 18 transitions, 56 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-05-12 12:53:10,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:10,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2024-05-12 12:53:10,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:10,454 INFO L124 PetriNetUnfolderBase]: 13/47 cut-off events. [2024-05-12 12:53:10,455 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-05-12 12:53:10,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 47 events. 13/47 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 89 event pairs, 0 based on Foata normal form. 1/48 useless extension candidates. Maximal degree in co-relation 31. Up to 22 conditions per place. [2024-05-12 12:53:10,455 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 16 selfloop transitions, 3 changer transitions 10/30 dead transitions. [2024-05-12 12:53:10,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 30 transitions, 141 flow [2024-05-12 12:53:10,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:53:10,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:53:10,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2024-05-12 12:53:10,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-05-12 12:53:10,457 INFO L175 Difference]: Start difference. First operand has 24 places, 18 transitions, 56 flow. Second operand 5 states and 55 transitions. [2024-05-12 12:53:10,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 30 transitions, 141 flow [2024-05-12 12:53:10,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 137 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:53:10,458 INFO L231 Difference]: Finished difference. Result has 27 places, 16 transitions, 51 flow [2024-05-12 12:53:10,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=51, PETRI_PLACES=27, PETRI_TRANSITIONS=16} [2024-05-12 12:53:10,459 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2024-05-12 12:53:10,459 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 16 transitions, 51 flow [2024-05-12 12:53:10,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-05-12 12:53:10,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:10,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:53:10,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 12:53:10,459 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:53:10,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:10,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1007889110, now seen corresponding path program 2 times [2024-05-12 12:53:10,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:10,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619845458] [2024-05-12 12:53:10,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:10,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:10,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:10,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:10,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619845458] [2024-05-12 12:53:10,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619845458] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:10,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:10,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:53:10,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721236260] [2024-05-12 12:53:10,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:10,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:53:10,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:10,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:53:10,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:53:10,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2024-05-12 12:53:10,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 16 transitions, 51 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-05-12 12:53:10,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:10,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2024-05-12 12:53:10,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:10,806 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2024-05-12 12:53:10,806 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-05-12 12:53:10,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 22 events. 4/22 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs, 0 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 63. Up to 9 conditions per place. [2024-05-12 12:53:10,807 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2024-05-12 12:53:10,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 18 transitions, 89 flow [2024-05-12 12:53:10,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:53:10,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:53:10,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 44 transitions. [2024-05-12 12:53:10,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-05-12 12:53:10,808 INFO L175 Difference]: Start difference. First operand has 27 places, 16 transitions, 51 flow. Second operand 5 states and 44 transitions. [2024-05-12 12:53:10,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 18 transitions, 89 flow [2024-05-12 12:53:10,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 18 transitions, 79 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-05-12 12:53:10,809 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2024-05-12 12:53:10,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2024-05-12 12:53:10,810 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -1 predicate places. [2024-05-12 12:53:10,810 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2024-05-12 12:53:10,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-05-12 12:53:10,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 5 remaining) [2024-05-12 12:53:10,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 5 remaining) [2024-05-12 12:53:10,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-05-12 12:53:10,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-05-12 12:53:10,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-05-12 12:53:10,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 12:53:10,813 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-05-12 12:53:10,815 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-05-12 12:53:10,815 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-05-12 12:53:10,819 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-05-12 12:53:10,819 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-05-12 12:53:10,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.05 12:53:10 BasicIcfg [2024-05-12 12:53:10,820 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-05-12 12:53:10,820 INFO L158 Benchmark]: Toolchain (without parser) took 3541.58ms. Allocated memory was 161.5MB in the beginning and 218.1MB in the end (delta: 56.6MB). Free memory was 105.5MB in the beginning and 173.4MB in the end (delta: -67.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:53:10,820 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 161.5MB. Free memory is still 122.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:53:10,821 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 161.5MB. Free memory was 120.0MB in the beginning and 119.8MB in the end (delta: 193.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:53:10,821 INFO L158 Benchmark]: CACSL2BoogieTranslator took 282.69ms. Allocated memory is still 161.5MB. Free memory was 105.5MB in the beginning and 91.3MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-05-12 12:53:10,821 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.78ms. Allocated memory is still 161.5MB. Free memory was 91.3MB in the beginning and 89.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 12:53:10,821 INFO L158 Benchmark]: Boogie Preprocessor took 67.23ms. Allocated memory is still 161.5MB. Free memory was 89.4MB in the beginning and 87.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 12:53:10,822 INFO L158 Benchmark]: RCFGBuilder took 801.45ms. Allocated memory is still 161.5MB. Free memory was 87.4MB in the beginning and 126.3MB in the end (delta: -38.9MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2024-05-12 12:53:10,822 INFO L158 Benchmark]: TraceAbstraction took 2300.83ms. Allocated memory was 161.5MB in the beginning and 218.1MB in the end (delta: 56.6MB). Free memory was 125.8MB in the beginning and 173.4MB in the end (delta: -47.5MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2024-05-12 12:53:10,823 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.16ms. Allocated memory is still 161.5MB. Free memory is still 122.8MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 161.5MB. Free memory was 120.0MB in the beginning and 119.8MB in the end (delta: 193.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 282.69ms. Allocated memory is still 161.5MB. Free memory was 105.5MB in the beginning and 91.3MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.78ms. Allocated memory is still 161.5MB. Free memory was 91.3MB in the beginning and 89.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.23ms. Allocated memory is still 161.5MB. Free memory was 89.4MB in the beginning and 87.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 801.45ms. Allocated memory is still 161.5MB. Free memory was 87.4MB in the beginning and 126.3MB in the end (delta: -38.9MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2300.83ms. Allocated memory was 161.5MB in the beginning and 218.1MB in the end (delta: 56.6MB). Free memory was 125.8MB in the beginning and 173.4MB in the end (delta: -47.5MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 62]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 63]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 69]: 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 5 procedures, 28 locations, 5 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: 2.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 108 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 94 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 230 IncrementalHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 7 mSDtfsCounter, 230 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=3, InterpolantAutomatonStates: 23, 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, 1.4s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 567 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-05-12 12:53:10,857 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