./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-collitem-subst.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-collitem-subst.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 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-collitem-subst.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-collitem-subst.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-?-80b1b13-m [2024-01-31 16:47:15,367 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:47:15,440 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:47:15,443 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:47:15,443 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:47:15,469 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:47:15,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:47:15,470 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:47:15,471 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:47:15,474 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:47:15,474 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:47:15,475 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:47:15,475 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:47:15,476 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:47:15,476 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:47:15,477 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:47:15,477 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:47:15,477 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:47:15,477 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:47:15,477 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:47:15,478 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:47:15,478 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:47:15,478 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:47:15,479 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:47:15,479 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:47:15,479 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:47:15,479 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:47:15,480 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:47:15,480 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:47:15,480 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:47:15,481 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:47:15,481 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:47:15,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:47:15,482 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:47:15,482 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:47:15,482 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:47:15,483 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:47:15,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:47:15,483 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:47:15,484 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:47:15,484 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:47:15,484 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:47:15,484 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:47:15,484 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:47:15,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:47:15,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:47:15,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:47:15,737 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:47:15,738 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:47:15,739 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-collitem-subst.wvr.c [2024-01-31 16:47:16,916 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:47:17,130 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:47:17,131 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-subst.wvr.c [2024-01-31 16:47:17,144 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0efdc0ca1/7e2441f4b6a14ded9e7e2455ddd1849b/FLAG3a305e87c [2024-01-31 16:47:17,484 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0efdc0ca1/7e2441f4b6a14ded9e7e2455ddd1849b [2024-01-31 16:47:17,486 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:47:17,486 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:47:17,487 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-collitem-subst.wvr.yml/witness.yml [2024-01-31 16:47:17,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:47:17,636 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:47:17,637 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:47:17,637 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:47:17,641 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:47:17,642 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:47:17" (1/2) ... [2024-01-31 16:47:17,643 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d37cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:47:17, skipping insertion in model container [2024-01-31 16:47:17,643 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:47:17" (1/2) ... [2024-01-31 16:47:17,644 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@75a6a84e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:47:17, skipping insertion in model container [2024-01-31 16:47:17,644 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:47:17" (2/2) ... [2024-01-31 16:47:17,645 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d37cbe and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:47:17, skipping insertion in model container [2024-01-31 16:47:17,645 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:47:17" (2/2) ... [2024-01-31 16:47:17,645 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:47:17,691 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 16:47:17,714 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:47:17,872 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-subst.wvr.c[3583,3596] [2024-01-31 16:47:17,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:47:17,902 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:47:17,923 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-subst.wvr.c[3583,3596] [2024-01-31 16:47:17,925 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:47:17,939 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:47:17,940 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:47:17 WrapperNode [2024-01-31 16:47:17,940 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:47:17,941 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:47:17,941 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:47:17,941 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:47:17,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:47:17" (1/1) ... [2024-01-31 16:47:17,958 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:47:17" (1/1) ... [2024-01-31 16:47:17,991 INFO L138 Inliner]: procedures = 23, calls = 46, calls flagged for inlining = 18, calls inlined = 40, statements flattened = 367 [2024-01-31 16:47:17,991 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:47:17,992 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:47:17,992 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:47:17,992 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:47:18,003 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:47:17" (1/1) ... [2024-01-31 16:47:18,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:47:17" (1/1) ... [2024-01-31 16:47:18,011 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:47:17" (1/1) ... [2024-01-31 16:47:18,041 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-01-31 16:47:18,041 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:47:17" (1/1) ... [2024-01-31 16:47:18,042 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:47:17" (1/1) ... [2024-01-31 16:47:18,057 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:47:17" (1/1) ... [2024-01-31 16:47:18,062 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:47:17" (1/1) ... [2024-01-31 16:47:18,064 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:47:17" (1/1) ... [2024-01-31 16:47:18,066 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:47:17" (1/1) ... [2024-01-31 16:47:18,074 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:47:18,075 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:47:18,075 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:47:18,075 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:47:18,076 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:47:17" (1/1) ... [2024-01-31 16:47:18,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:47:18,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:47:18,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 16:47:18,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 16:47:18,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:47:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:47:18,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:47:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:47:18,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:47:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 16:47:18,190 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 16:47:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:47:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:47:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:47:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:47:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:47:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:47:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:47:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:47:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:47:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:47:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:47:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:47:18,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:47:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:47:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:47:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:47:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:47:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:47:18,197 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:47:18,340 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:47:18,342 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:47:18,813 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:47:18,814 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:47:19,395 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:47:19,396 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 16:47:19,397 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:47:19 BoogieIcfgContainer [2024-01-31 16:47:19,397 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:47:19,400 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:47:19,400 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:47:19,403 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:47:19,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:47:17" (1/4) ... [2024-01-31 16:47:19,404 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4362feba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:47:19, skipping insertion in model container [2024-01-31 16:47:19,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:47:17" (2/4) ... [2024-01-31 16:47:19,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4362feba and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:47:19, skipping insertion in model container [2024-01-31 16:47:19,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:47:17" (3/4) ... [2024-01-31 16:47:19,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4362feba and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:47:19, skipping insertion in model container [2024-01-31 16:47:19,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:47:19" (4/4) ... [2024-01-31 16:47:19,408 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-collitem-subst.wvr.c [2024-01-31 16:47:19,426 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:47:19,426 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 16:47:19,426 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:47:19,512 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-31 16:47:19,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 27 transitions, 75 flow [2024-01-31 16:47:19,645 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2024-01-31 16:47:19,646 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 16:47:19,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 24 events. 0/24 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-01-31 16:47:19,647 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 27 transitions, 75 flow [2024-01-31 16:47:19,650 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 23 transitions, 64 flow [2024-01-31 16:47:19,657 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:47:19,664 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;@6cf7152b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:47:19,665 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-31 16:47:19,681 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:47:19,682 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2024-01-31 16:47:19,682 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 16:47:19,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:47:19,683 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] [2024-01-31 16:47:19,683 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:47:19,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:47:19,688 INFO L85 PathProgramCache]: Analyzing trace with hash 748667797, now seen corresponding path program 1 times [2024-01-31 16:47:19,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:47:19,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228291430] [2024-01-31 16:47:19,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:47:19,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:47:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:47:24,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:47:24,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:47:24,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228291430] [2024-01-31 16:47:24,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228291430] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:47:24,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:47:24,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:47:24,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033346356] [2024-01-31 16:47:24,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:47:24,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:47:24,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:47:24,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:47:24,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:47:24,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-31 16:47:24,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:47:24,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:47:24,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-31 16:47:24,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:47:25,212 INFO L124 PetriNetUnfolderBase]: 202/382 cut-off events. [2024-01-31 16:47:25,213 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-01-31 16:47:25,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 814 conditions, 382 events. 202/382 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1488 event pairs, 10 based on Foata normal form. 1/379 useless extension candidates. Maximal degree in co-relation 572. Up to 128 conditions per place. [2024-01-31 16:47:25,221 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 41 selfloop transitions, 5 changer transitions 10/60 dead transitions. [2024-01-31 16:47:25,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 60 transitions, 280 flow [2024-01-31 16:47:25,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:47:25,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:47:25,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-01-31 16:47:25,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-01-31 16:47:25,236 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 64 flow. Second operand 6 states and 99 transitions. [2024-01-31 16:47:25,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 60 transitions, 280 flow [2024-01-31 16:47:25,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 60 transitions, 248 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:47:25,243 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 71 flow [2024-01-31 16:47:25,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2024-01-31 16:47:25,249 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2024-01-31 16:47:25,249 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 71 flow [2024-01-31 16:47:25,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:47:25,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:47:25,250 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] [2024-01-31 16:47:25,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:47:25,251 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:47:25,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:47:25,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1711399441, now seen corresponding path program 2 times [2024-01-31 16:47:25,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:47:25,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339873049] [2024-01-31 16:47:25,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:47:25,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:47:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:47:27,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:47:27,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:47:27,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339873049] [2024-01-31 16:47:27,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339873049] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:47:27,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:47:27,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:47:27,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611388270] [2024-01-31 16:47:27,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:47:27,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:47:27,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:47:27,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:47:27,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:47:27,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-31 16:47:27,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:47:27,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:47:27,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-31 16:47:27,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:47:27,854 INFO L124 PetriNetUnfolderBase]: 222/421 cut-off events. [2024-01-31 16:47:27,854 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-01-31 16:47:27,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 421 events. 222/421 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1769 event pairs, 16 based on Foata normal form. 1/420 useless extension candidates. Maximal degree in co-relation 945. Up to 174 conditions per place. [2024-01-31 16:47:27,860 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 38 selfloop transitions, 6 changer transitions 14/62 dead transitions. [2024-01-31 16:47:27,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 62 transitions, 286 flow [2024-01-31 16:47:27,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:47:27,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:47:27,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-01-31 16:47:27,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-01-31 16:47:27,867 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 71 flow. Second operand 6 states and 99 transitions. [2024-01-31 16:47:27,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 62 transitions, 286 flow [2024-01-31 16:47:27,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 62 transitions, 282 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-31 16:47:27,879 INFO L231 Difference]: Finished difference. Result has 40 places, 27 transitions, 100 flow [2024-01-31 16:47:27,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=40, PETRI_TRANSITIONS=27} [2024-01-31 16:47:27,884 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-01-31 16:47:27,884 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 27 transitions, 100 flow [2024-01-31 16:47:27,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:47:27,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:47:27,885 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] [2024-01-31 16:47:27,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:47:27,885 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:47:27,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:47:27,888 INFO L85 PathProgramCache]: Analyzing trace with hash 706519257, now seen corresponding path program 3 times [2024-01-31 16:47:27,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:47:27,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798017122] [2024-01-31 16:47:27,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:47:27,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:47:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:47:30,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:47:30,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:47:30,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798017122] [2024-01-31 16:47:30,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798017122] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:47:30,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:47:30,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:47:30,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504741798] [2024-01-31 16:47:30,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:47:30,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:47:30,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:47:30,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:47:30,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:47:30,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-31 16:47:30,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:47:30,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:47:30,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-31 16:47:30,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:47:31,159 INFO L124 PetriNetUnfolderBase]: 220/432 cut-off events. [2024-01-31 16:47:31,160 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2024-01-31 16:47:31,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1056 conditions, 432 events. 220/432 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1828 event pairs, 20 based on Foata normal form. 1/431 useless extension candidates. Maximal degree in co-relation 1036. Up to 222 conditions per place. [2024-01-31 16:47:31,162 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 35 selfloop transitions, 5 changer transitions 14/58 dead transitions. [2024-01-31 16:47:31,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 58 transitions, 291 flow [2024-01-31 16:47:31,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:47:31,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:47:31,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-01-31 16:47:31,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-01-31 16:47:31,167 INFO L175 Difference]: Start difference. First operand has 40 places, 27 transitions, 100 flow. Second operand 6 states and 96 transitions. [2024-01-31 16:47:31,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 58 transitions, 291 flow [2024-01-31 16:47:31,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 58 transitions, 275 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-01-31 16:47:31,172 INFO L231 Difference]: Finished difference. Result has 44 places, 26 transitions, 102 flow [2024-01-31 16:47:31,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=102, PETRI_PLACES=44, PETRI_TRANSITIONS=26} [2024-01-31 16:47:31,174 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2024-01-31 16:47:31,174 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 26 transitions, 102 flow [2024-01-31 16:47:31,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:47:31,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:47:31,175 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] [2024-01-31 16:47:31,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:47:31,176 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:47:31,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:47:31,176 INFO L85 PathProgramCache]: Analyzing trace with hash -910126325, now seen corresponding path program 4 times [2024-01-31 16:47:31,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:47:31,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905887843] [2024-01-31 16:47:31,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:47:31,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:47:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:47:33,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:47:33,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:47:33,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905887843] [2024-01-31 16:47:33,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905887843] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:47:33,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:47:33,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:47:33,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688445879] [2024-01-31 16:47:33,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:47:33,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:47:33,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:47:33,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:47:33,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:47:33,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-31 16:47:33,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 26 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:47:33,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:47:33,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-31 16:47:33,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:47:33,999 INFO L124 PetriNetUnfolderBase]: 160/315 cut-off events. [2024-01-31 16:47:33,999 INFO L125 PetriNetUnfolderBase]: For 266/266 co-relation queries the response was YES. [2024-01-31 16:47:34,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 315 events. 160/315 cut-off events. For 266/266 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1208 event pairs, 24 based on Foata normal form. 1/315 useless extension candidates. Maximal degree in co-relation 781. Up to 126 conditions per place. [2024-01-31 16:47:34,001 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 35 selfloop transitions, 5 changer transitions 11/55 dead transitions. [2024-01-31 16:47:34,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 55 transitions, 282 flow [2024-01-31 16:47:34,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:47:34,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:47:34,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2024-01-31 16:47:34,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-01-31 16:47:34,004 INFO L175 Difference]: Start difference. First operand has 44 places, 26 transitions, 102 flow. Second operand 6 states and 93 transitions. [2024-01-31 16:47:34,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 55 transitions, 282 flow [2024-01-31 16:47:34,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 55 transitions, 260 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-01-31 16:47:34,008 INFO L231 Difference]: Finished difference. Result has 44 places, 25 transitions, 93 flow [2024-01-31 16:47:34,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=93, PETRI_PLACES=44, PETRI_TRANSITIONS=25} [2024-01-31 16:47:34,009 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2024-01-31 16:47:34,010 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 25 transitions, 93 flow [2024-01-31 16:47:34,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:47:34,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:47:34,011 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] [2024-01-31 16:47:34,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:47:34,011 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:47:34,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:47:34,012 INFO L85 PathProgramCache]: Analyzing trace with hash -271199177, now seen corresponding path program 5 times [2024-01-31 16:47:34,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:47:34,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087478078] [2024-01-31 16:47:34,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:47:34,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:47:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:47:39,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:47:39,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:47:39,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087478078] [2024-01-31 16:47:39,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087478078] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:47:39,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:47:39,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:47:39,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025306411] [2024-01-31 16:47:39,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:47:39,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:47:39,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:47:39,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:47:39,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:47:39,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-31 16:47:39,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 25 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:47:39,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:47:39,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-31 16:47:39,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:47:39,810 INFO L124 PetriNetUnfolderBase]: 118/234 cut-off events. [2024-01-31 16:47:39,810 INFO L125 PetriNetUnfolderBase]: For 254/254 co-relation queries the response was YES. [2024-01-31 16:47:39,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 234 events. 118/234 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 797 event pairs, 6 based on Foata normal form. 1/234 useless extension candidates. Maximal degree in co-relation 618. Up to 82 conditions per place. [2024-01-31 16:47:39,812 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 22 selfloop transitions, 3 changer transitions 23/52 dead transitions. [2024-01-31 16:47:39,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 52 transitions, 257 flow [2024-01-31 16:47:39,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:47:39,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:47:39,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2024-01-31 16:47:39,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5617283950617284 [2024-01-31 16:47:39,816 INFO L175 Difference]: Start difference. First operand has 44 places, 25 transitions, 93 flow. Second operand 6 states and 91 transitions. [2024-01-31 16:47:39,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 52 transitions, 257 flow [2024-01-31 16:47:39,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 52 transitions, 244 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-01-31 16:47:39,818 INFO L231 Difference]: Finished difference. Result has 46 places, 23 transitions, 80 flow [2024-01-31 16:47:39,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=80, PETRI_PLACES=46, PETRI_TRANSITIONS=23} [2024-01-31 16:47:39,820 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2024-01-31 16:47:39,821 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 23 transitions, 80 flow [2024-01-31 16:47:39,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:47:39,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:47:39,821 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] [2024-01-31 16:47:39,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:47:39,822 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:47:39,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:47:39,822 INFO L85 PathProgramCache]: Analyzing trace with hash 2071464851, now seen corresponding path program 6 times [2024-01-31 16:47:39,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:47:39,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245095194] [2024-01-31 16:47:39,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:47:39,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:47:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:47:42,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:47:42,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:47:42,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245095194] [2024-01-31 16:47:42,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245095194] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:47:42,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:47:42,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:47:42,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754754302] [2024-01-31 16:47:42,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:47:42,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:47:42,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:47:42,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:47:42,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:47:42,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-31 16:47:42,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 23 transitions, 80 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:47:42,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:47:42,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-31 16:47:42,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:47:42,625 INFO L124 PetriNetUnfolderBase]: 50/105 cut-off events. [2024-01-31 16:47:42,625 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2024-01-31 16:47:42,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 105 events. 50/105 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 230 event pairs, 0 based on Foata normal form. 1/105 useless extension candidates. Maximal degree in co-relation 280. Up to 67 conditions per place. [2024-01-31 16:47:42,626 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2024-01-31 16:47:42,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 29 transitions, 143 flow [2024-01-31 16:47:42,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:47:42,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:47:42,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-01-31 16:47:42,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-01-31 16:47:42,628 INFO L175 Difference]: Start difference. First operand has 46 places, 23 transitions, 80 flow. Second operand 6 states and 69 transitions. [2024-01-31 16:47:42,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 29 transitions, 143 flow [2024-01-31 16:47:42,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 29 transitions, 127 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-01-31 16:47:42,629 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2024-01-31 16:47:42,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2024-01-31 16:47:42,630 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2024-01-31 16:47:42,630 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2024-01-31 16:47:42,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:47:42,632 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-01-31 16:47:42,634 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-01-31 16:47:42,634 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-01-31 16:47:42,634 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-01-31 16:47:42,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:47:42,635 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2024-01-31 16:47:42,637 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 16:47:42,637 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 16:47:42,642 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:47:42 BasicIcfg [2024-01-31 16:47:42,642 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 16:47:42,643 INFO L158 Benchmark]: Toolchain (without parser) took 25006.90ms. Allocated memory was 155.2MB in the beginning and 903.9MB in the end (delta: 748.7MB). Free memory was 97.2MB in the beginning and 331.0MB in the end (delta: -233.7MB). Peak memory consumption was 514.0MB. Max. memory is 16.1GB. [2024-01-31 16:47:42,643 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory was 59.6MB in the beginning and 59.5MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:47:42,643 INFO L158 Benchmark]: Witness Parser took 0.19ms. Allocated memory is still 155.2MB. Free memory is still 104.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:47:42,644 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.29ms. Allocated memory is still 155.2MB. Free memory was 96.7MB in the beginning and 124.7MB in the end (delta: -28.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-01-31 16:47:42,644 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.85ms. Allocated memory is still 155.2MB. Free memory was 124.7MB in the beginning and 121.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:47:42,644 INFO L158 Benchmark]: Boogie Preprocessor took 82.39ms. Allocated memory is still 155.2MB. Free memory was 121.5MB in the beginning and 117.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-31 16:47:42,645 INFO L158 Benchmark]: RCFGBuilder took 1322.58ms. Allocated memory was 155.2MB in the beginning and 188.7MB in the end (delta: 33.6MB). Free memory was 117.3MB in the beginning and 90.4MB in the end (delta: 26.9MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. [2024-01-31 16:47:42,645 INFO L158 Benchmark]: TraceAbstraction took 23242.24ms. Allocated memory was 188.7MB in the beginning and 903.9MB in the end (delta: 715.1MB). Free memory was 90.4MB in the beginning and 331.0MB in the end (delta: -240.5MB). Peak memory consumption was 476.7MB. Max. memory is 16.1GB. [2024-01-31 16:47:42,647 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory was 59.6MB in the beginning and 59.5MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.19ms. Allocated memory is still 155.2MB. Free memory is still 104.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 303.29ms. Allocated memory is still 155.2MB. Free memory was 96.7MB in the beginning and 124.7MB in the end (delta: -28.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.85ms. Allocated memory is still 155.2MB. Free memory was 124.7MB in the beginning and 121.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 82.39ms. Allocated memory is still 155.2MB. Free memory was 121.5MB in the beginning and 117.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1322.58ms. Allocated memory was 155.2MB in the beginning and 188.7MB in the end (delta: 33.6MB). Free memory was 117.3MB in the beginning and 90.4MB in the end (delta: 26.9MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. * TraceAbstraction took 23242.24ms. Allocated memory was 188.7MB in the beginning and 903.9MB in the end (delta: 715.1MB). Free memory was 90.4MB in the beginning and 331.0MB in the end (delta: -240.5MB). Peak memory consumption was 476.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 101]: 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, 43 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: 23.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 216 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 216 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 585 IncrementalHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 0 mSDtfsCounter, 585 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=3, InterpolantAutomatonStates: 36, 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, 0.9s SatisfiabilityAnalysisTime, 19.0s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 6322 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-31 16:47:42,685 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