./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/parallel-ticket-3.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 76401ed0 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/parallel-ticket-3.wvr.c ./goblint.2024-05-21_14-57-05.files/mutex-meet/parallel-ticket-3.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-76401ed-m [2024-06-20 18:13:05,036 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 18:13:05,121 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 18:13:05,127 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 18:13:05,127 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 18:13:05,221 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 18:13:05,222 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 18:13:05,222 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 18:13:05,223 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 18:13:05,223 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 18:13:05,223 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 18:13:05,224 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 18:13:05,224 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 18:13:05,225 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 18:13:05,225 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 18:13:05,225 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 18:13:05,226 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 18:13:05,226 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 18:13:05,227 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 18:13:05,227 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 18:13:05,227 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 18:13:05,228 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 18:13:05,228 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 18:13:05,228 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 18:13:05,229 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 18:13:05,229 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 18:13:05,229 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 18:13:05,230 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 18:13:05,230 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 18:13:05,230 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 18:13:05,231 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 18:13:05,231 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 18:13:05,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 18:13:05,231 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 18:13:05,232 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 18:13:05,232 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 18:13:05,232 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 18:13:05,232 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 18:13:05,233 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 18:13:05,233 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 18:13:05,233 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 18:13:05,233 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 18:13:05,234 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 18:13:05,234 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 18:13:05,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 18:13:05,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 18:13:05,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 18:13:05,487 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 18:13:05,488 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 18:13:05,489 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/parallel-ticket-3.wvr.yml/witness.yml [2024-06-20 18:13:05,578 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 18:13:05,579 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 18:13:05,579 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c [2024-06-20 18:13:06,700 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 18:13:06,895 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 18:13:06,896 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c [2024-06-20 18:13:06,901 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ad7c9b21/f0890be8637040858996f4e3a112a9ae/FLAG2165ab70e [2024-06-20 18:13:06,913 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ad7c9b21/f0890be8637040858996f4e3a112a9ae [2024-06-20 18:13:06,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 18:13:06,915 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 18:13:06,920 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 18:13:06,920 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 18:13:06,925 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 18:13:06,925 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 06:13:05" (1/2) ... [2024-06-20 18:13:06,926 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b4cfdf0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:13:06, skipping insertion in model container [2024-06-20 18:13:06,927 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 06:13:05" (1/2) ... [2024-06-20 18:13:06,928 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4ded58a3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:13:06, skipping insertion in model container [2024-06-20 18:13:06,929 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 06:13:06" (2/2) ... [2024-06-20 18:13:06,931 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b4cfdf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:13:06, skipping insertion in model container [2024-06-20 18:13:06,931 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 06:13:06" (2/2) ... [2024-06-20 18:13:06,931 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 18:13:06,944 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 18:13:06,945 INFO L97 edCorrectnessWitness]: Location invariant before [L117-L117] ! multithreaded || ((((((((2147483648LL + (long long )b) + (long long )s >= 0LL && (2147483648LL + (long long )b) + (long long )x >= 0LL) && (4294967296LL + (long long )s) + (long long )x >= 0LL) && (2147483649LL - (long long )b) + (long long )s >= 0LL) && (2147483649LL - (long long )b) + (long long )x >= 0LL) && (2147483647LL + (long long )b) - (long long )x >= 0LL) && (4294967295LL + (long long )s) - (long long )x >= 0LL) && (2147483648LL - (long long )b) - (long long )x >= 0LL) [2024-06-20 18:13:06,946 INFO L97 edCorrectnessWitness]: Location invariant before [L119-L119] ! multithreaded || ((((((((2147483648LL + (long long )b) + (long long )s >= 0LL && (2147483648LL + (long long )b) + (long long )x >= 0LL) && (4294967296LL + (long long )s) + (long long )x >= 0LL) && (2147483649LL - (long long )b) + (long long )s >= 0LL) && (2147483649LL - (long long )b) + (long long )x >= 0LL) && (2147483647LL + (long long )b) - (long long )x >= 0LL) && (4294967295LL + (long long )s) - (long long )x >= 0LL) && (2147483648LL - (long long )b) - (long long )x >= 0LL) [2024-06-20 18:13:06,946 INFO L97 edCorrectnessWitness]: Location invariant before [L118-L118] ! multithreaded || ((((((((2147483648LL + (long long )b) + (long long )s >= 0LL && (2147483648LL + (long long )b) + (long long )x >= 0LL) && (4294967296LL + (long long )s) + (long long )x >= 0LL) && (2147483649LL - (long long )b) + (long long )s >= 0LL) && (2147483649LL - (long long )b) + (long long )x >= 0LL) && (2147483647LL + (long long )b) - (long long )x >= 0LL) && (4294967295LL + (long long )s) - (long long )x >= 0LL) && (2147483648LL - (long long )b) - (long long )x >= 0LL) [2024-06-20 18:13:06,946 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 18:13:06,946 INFO L106 edCorrectnessWitness]: ghost_update [L116-L116] multithreaded = 1; [2024-06-20 18:13:06,967 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 18:13:07,147 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 18:13:07,160 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 18:13:07,222 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 18:13:07,238 INFO L206 MainTranslator]: Completed translation [2024-06-20 18:13:07,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:13:07 WrapperNode [2024-06-20 18:13:07,238 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 18:13:07,239 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 18:13:07,239 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 18:13:07,240 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 18:13:07,256 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:13:07" (1/1) ... [2024-06-20 18:13:07,276 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:13:07" (1/1) ... [2024-06-20 18:13:07,306 INFO L138 Inliner]: procedures = 21, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 158 [2024-06-20 18:13:07,306 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 18:13:07,307 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 18:13:07,307 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 18:13:07,308 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 18:13:07,316 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:13:07" (1/1) ... [2024-06-20 18:13:07,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:13:07" (1/1) ... [2024-06-20 18:13:07,319 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:13:07" (1/1) ... [2024-06-20 18:13:07,340 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-20 18:13:07,340 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:13:07" (1/1) ... [2024-06-20 18:13:07,340 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:13:07" (1/1) ... [2024-06-20 18:13:07,345 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:13:07" (1/1) ... [2024-06-20 18:13:07,347 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:13:07" (1/1) ... [2024-06-20 18:13:07,348 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:13:07" (1/1) ... [2024-06-20 18:13:07,350 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:13:07" (1/1) ... [2024-06-20 18:13:07,352 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 18:13:07,353 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 18:13:07,353 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 18:13:07,353 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 18:13:07,354 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:13:07" (1/1) ... [2024-06-20 18:13:07,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 18:13:07,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 18:13:07,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-20 18:13:07,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-20 18:13:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 18:13:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-20 18:13:07,411 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-20 18:13:07,412 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-20 18:13:07,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-20 18:13:07,412 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-20 18:13:07,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-20 18:13:07,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 18:13:07,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-20 18:13:07,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-20 18:13:07,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 18:13:07,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 18:13:07,414 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-20 18:13:07,490 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 18:13:07,492 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 18:13:07,830 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 18:13:07,831 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 18:13:08,071 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 18:13:08,071 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-20 18:13:08,072 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 06:13:08 BoogieIcfgContainer [2024-06-20 18:13:08,072 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 18:13:08,076 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 18:13:08,076 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 18:13:08,079 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 18:13:08,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 06:13:05" (1/4) ... [2024-06-20 18:13:08,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13cb3b32 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 06:13:08, skipping insertion in model container [2024-06-20 18:13:08,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 06:13:06" (2/4) ... [2024-06-20 18:13:08,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13cb3b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 06:13:08, skipping insertion in model container [2024-06-20 18:13:08,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:13:07" (3/4) ... [2024-06-20 18:13:08,083 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13cb3b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 06:13:08, skipping insertion in model container [2024-06-20 18:13:08,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 06:13:08" (4/4) ... [2024-06-20 18:13:08,085 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-3.wvr.c [2024-06-20 18:13:08,101 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 18:13:08,101 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-20 18:13:08,102 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 18:13:08,158 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-20 18:13:08,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 40 transitions, 101 flow [2024-06-20 18:13:08,236 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-06-20 18:13:08,236 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-20 18:13:08,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 37 events. 0/37 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-06-20 18:13:08,238 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 40 transitions, 101 flow [2024-06-20 18:13:08,241 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-06-20 18:13:08,255 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 18:13:08,262 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;@3b45f000, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 18:13:08,262 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-20 18:13:08,269 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 18:13:08,269 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-20 18:13:08,269 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 18:13:08,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:13:08,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-20 18:13:08,271 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 18:13:08,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:13:08,276 INFO L85 PathProgramCache]: Analyzing trace with hash 346018490, now seen corresponding path program 1 times [2024-06-20 18:13:08,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:13:08,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153131266] [2024-06-20 18:13:08,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:13:08,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:13:08,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:13:08,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:13:08,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:13:08,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153131266] [2024-06-20 18:13:08,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153131266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:13:08,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:13:08,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-20 18:13:08,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035351467] [2024-06-20 18:13:08,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:13:08,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 18:13:08,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:13:08,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 18:13:08,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 18:13:08,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-06-20 18:13:08,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:13:08,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:13:08,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-06-20 18:13:08,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:13:09,065 INFO L124 PetriNetUnfolderBase]: 937/1557 cut-off events. [2024-06-20 18:13:09,066 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-20 18:13:09,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3075 conditions, 1557 events. 937/1557 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8329 event pairs, 400 based on Foata normal form. 75/1596 useless extension candidates. Maximal degree in co-relation 3063. Up to 897 conditions per place. [2024-06-20 18:13:09,084 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 38 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2024-06-20 18:13:09,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 47 transitions, 189 flow [2024-06-20 18:13:09,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 18:13:09,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 18:13:09,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-06-20 18:13:09,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-06-20 18:13:09,099 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 3 states and 76 transitions. [2024-06-20 18:13:09,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 47 transitions, 189 flow [2024-06-20 18:13:09,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 184 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-20 18:13:09,108 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 82 flow [2024-06-20 18:13:09,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2024-06-20 18:13:09,113 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2024-06-20 18:13:09,113 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 82 flow [2024-06-20 18:13:09,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:13:09,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:13:09,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:13:09,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 18:13:09,115 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 18:13:09,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:13:09,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1513839322, now seen corresponding path program 1 times [2024-06-20 18:13:09,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:13:09,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982064766] [2024-06-20 18:13:09,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:13:09,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:13:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:13:09,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:13:09,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:13:09,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982064766] [2024-06-20 18:13:09,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982064766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:13:09,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:13:09,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 18:13:09,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248848888] [2024-06-20 18:13:09,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:13:09,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 18:13:09,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:13:09,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 18:13:09,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-20 18:13:09,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-20 18:13:09,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:13:09,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:13:09,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-20 18:13:09,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:13:09,659 INFO L124 PetriNetUnfolderBase]: 1607/2433 cut-off events. [2024-06-20 18:13:09,659 INFO L125 PetriNetUnfolderBase]: For 229/229 co-relation queries the response was YES. [2024-06-20 18:13:09,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5301 conditions, 2433 events. 1607/2433 cut-off events. For 229/229 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 11490 event pairs, 476 based on Foata normal form. 13/2436 useless extension candidates. Maximal degree in co-relation 5289. Up to 1773 conditions per place. [2024-06-20 18:13:09,674 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 52 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2024-06-20 18:13:09,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 63 transitions, 275 flow [2024-06-20 18:13:09,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 18:13:09,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 18:13:09,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-06-20 18:13:09,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5875 [2024-06-20 18:13:09,678 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 82 flow. Second operand 4 states and 94 transitions. [2024-06-20 18:13:09,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 63 transitions, 275 flow [2024-06-20 18:13:09,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 63 transitions, 269 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 18:13:09,682 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 128 flow [2024-06-20 18:13:09,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-20 18:13:09,683 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2024-06-20 18:13:09,684 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 128 flow [2024-06-20 18:13:09,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:13:09,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:13:09,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:13:09,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 18:13:09,687 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 18:13:09,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:13:09,688 INFO L85 PathProgramCache]: Analyzing trace with hash -315619793, now seen corresponding path program 1 times [2024-06-20 18:13:09,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:13:09,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93244047] [2024-06-20 18:13:09,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:13:09,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:13:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:13:09,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:13:09,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:13:09,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93244047] [2024-06-20 18:13:09,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93244047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:13:09,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:13:09,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 18:13:09,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801684683] [2024-06-20 18:13:09,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:13:09,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 18:13:09,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:13:09,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 18:13:09,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-20 18:13:09,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-20 18:13:09,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:13:09,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:13:09,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-20 18:13:09,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:13:10,148 INFO L124 PetriNetUnfolderBase]: 2135/3294 cut-off events. [2024-06-20 18:13:10,148 INFO L125 PetriNetUnfolderBase]: For 1063/1063 co-relation queries the response was YES. [2024-06-20 18:13:10,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7856 conditions, 3294 events. 2135/3294 cut-off events. For 1063/1063 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 16722 event pairs, 1482 based on Foata normal form. 129/3413 useless extension candidates. Maximal degree in co-relation 7842. Up to 1841 conditions per place. [2024-06-20 18:13:10,165 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 60 selfloop transitions, 8 changer transitions 1/73 dead transitions. [2024-06-20 18:13:10,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 73 transitions, 356 flow [2024-06-20 18:13:10,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 18:13:10,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 18:13:10,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-06-20 18:13:10,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6125 [2024-06-20 18:13:10,167 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 128 flow. Second operand 4 states and 98 transitions. [2024-06-20 18:13:10,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 73 transitions, 356 flow [2024-06-20 18:13:10,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 73 transitions, 356 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-20 18:13:10,170 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 165 flow [2024-06-20 18:13:10,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2024-06-20 18:13:10,171 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2024-06-20 18:13:10,171 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 165 flow [2024-06-20 18:13:10,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:13:10,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:13:10,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:13:10,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 18:13:10,172 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 18:13:10,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:13:10,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1599022341, now seen corresponding path program 1 times [2024-06-20 18:13:10,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:13:10,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995365426] [2024-06-20 18:13:10,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:13:10,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:13:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:13:10,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:13:10,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:13:10,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995365426] [2024-06-20 18:13:10,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995365426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:13:10,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:13:10,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 18:13:10,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790704956] [2024-06-20 18:13:10,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:13:10,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 18:13:10,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:13:10,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 18:13:10,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-20 18:13:10,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-20 18:13:10,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 165 flow. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:13:10,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:13:10,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-20 18:13:10,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:13:10,563 INFO L124 PetriNetUnfolderBase]: 1769/3199 cut-off events. [2024-06-20 18:13:10,563 INFO L125 PetriNetUnfolderBase]: For 650/668 co-relation queries the response was YES. [2024-06-20 18:13:10,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7284 conditions, 3199 events. 1769/3199 cut-off events. For 650/668 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 21319 event pairs, 518 based on Foata normal form. 30/3110 useless extension candidates. Maximal degree in co-relation 7266. Up to 1027 conditions per place. [2024-06-20 18:13:10,583 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 54 selfloop transitions, 13 changer transitions 0/85 dead transitions. [2024-06-20 18:13:10,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 85 transitions, 399 flow [2024-06-20 18:13:10,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 18:13:10,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 18:13:10,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-06-20 18:13:10,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.715 [2024-06-20 18:13:10,585 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 165 flow. Second operand 5 states and 143 transitions. [2024-06-20 18:13:10,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 85 transitions, 399 flow [2024-06-20 18:13:10,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 85 transitions, 383 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-20 18:13:10,592 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 228 flow [2024-06-20 18:13:10,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2024-06-20 18:13:10,593 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2024-06-20 18:13:10,593 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 228 flow [2024-06-20 18:13:10,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:13:10,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:13:10,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:13:10,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-20 18:13:10,594 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 18:13:10,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:13:10,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1135952335, now seen corresponding path program 2 times [2024-06-20 18:13:10,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:13:10,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682095972] [2024-06-20 18:13:10,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:13:10,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:13:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:13:10,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:13:10,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:13:10,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682095972] [2024-06-20 18:13:10,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682095972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:13:10,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:13:10,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 18:13:10,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940345605] [2024-06-20 18:13:10,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:13:10,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 18:13:10,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:13:10,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 18:13:10,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-20 18:13:10,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-20 18:13:10,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:13:10,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:13:10,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-20 18:13:10,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:13:10,979 INFO L124 PetriNetUnfolderBase]: 1455/2703 cut-off events. [2024-06-20 18:13:10,979 INFO L125 PetriNetUnfolderBase]: For 1562/1648 co-relation queries the response was YES. [2024-06-20 18:13:10,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7297 conditions, 2703 events. 1455/2703 cut-off events. For 1562/1648 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 17773 event pairs, 442 based on Foata normal form. 77/2703 useless extension candidates. Maximal degree in co-relation 7278. Up to 815 conditions per place. [2024-06-20 18:13:10,999 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 52 selfloop transitions, 16 changer transitions 3/88 dead transitions. [2024-06-20 18:13:10,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 88 transitions, 472 flow [2024-06-20 18:13:10,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 18:13:10,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 18:13:11,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 144 transitions. [2024-06-20 18:13:11,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.72 [2024-06-20 18:13:11,002 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 228 flow. Second operand 5 states and 144 transitions. [2024-06-20 18:13:11,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 88 transitions, 472 flow [2024-06-20 18:13:11,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 88 transitions, 472 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-20 18:13:11,013 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 290 flow [2024-06-20 18:13:11,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=290, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-06-20 18:13:11,015 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2024-06-20 18:13:11,015 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 290 flow [2024-06-20 18:13:11,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:13:11,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:13:11,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:13:11,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-20 18:13:11,017 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 18:13:11,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:13:11,017 INFO L85 PathProgramCache]: Analyzing trace with hash 862267867, now seen corresponding path program 1 times [2024-06-20 18:13:11,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:13:11,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056674459] [2024-06-20 18:13:11,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:13:11,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:13:11,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:13:11,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:13:11,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:13:11,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056674459] [2024-06-20 18:13:11,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056674459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:13:11,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:13:11,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 18:13:11,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976902231] [2024-06-20 18:13:11,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:13:11,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 18:13:11,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:13:11,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 18:13:11,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-20 18:13:11,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-20 18:13:11,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 290 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:13:11,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:13:11,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-20 18:13:11,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:13:11,468 INFO L124 PetriNetUnfolderBase]: 2011/3383 cut-off events. [2024-06-20 18:13:11,468 INFO L125 PetriNetUnfolderBase]: For 4552/4560 co-relation queries the response was YES. [2024-06-20 18:13:11,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10827 conditions, 3383 events. 2011/3383 cut-off events. For 4552/4560 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 20083 event pairs, 757 based on Foata normal form. 66/3438 useless extension candidates. Maximal degree in co-relation 10804. Up to 2551 conditions per place. [2024-06-20 18:13:11,489 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 64 selfloop transitions, 11 changer transitions 8/94 dead transitions. [2024-06-20 18:13:11,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 94 transitions, 674 flow [2024-06-20 18:13:11,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 18:13:11,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 18:13:11,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-06-20 18:13:11,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-20 18:13:11,491 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 290 flow. Second operand 5 states and 105 transitions. [2024-06-20 18:13:11,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 94 transitions, 674 flow [2024-06-20 18:13:11,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 94 transitions, 638 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 18:13:11,502 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 350 flow [2024-06-20 18:13:11,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=350, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2024-06-20 18:13:11,503 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2024-06-20 18:13:11,503 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 350 flow [2024-06-20 18:13:11,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:13:11,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:13:11,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:13:11,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-20 18:13:11,504 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 18:13:11,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:13:11,504 INFO L85 PathProgramCache]: Analyzing trace with hash 183767169, now seen corresponding path program 1 times [2024-06-20 18:13:11,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:13:11,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379623520] [2024-06-20 18:13:11,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:13:11,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:13:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:13:11,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:13:11,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:13:11,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379623520] [2024-06-20 18:13:11,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379623520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:13:11,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:13:11,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 18:13:11,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754008491] [2024-06-20 18:13:11,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:13:11,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 18:13:11,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:13:11,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 18:13:11,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-20 18:13:11,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-20 18:13:11,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 350 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:13:11,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:13:11,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-20 18:13:11,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:13:11,726 INFO L124 PetriNetUnfolderBase]: 569/1168 cut-off events. [2024-06-20 18:13:11,727 INFO L125 PetriNetUnfolderBase]: For 1864/1878 co-relation queries the response was YES. [2024-06-20 18:13:11,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3740 conditions, 1168 events. 569/1168 cut-off events. For 1864/1878 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6646 event pairs, 173 based on Foata normal form. 35/1202 useless extension candidates. Maximal degree in co-relation 3714. Up to 418 conditions per place. [2024-06-20 18:13:11,734 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 35 selfloop transitions, 17 changer transitions 10/75 dead transitions. [2024-06-20 18:13:11,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 75 transitions, 503 flow [2024-06-20 18:13:11,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 18:13:11,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 18:13:11,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-06-20 18:13:11,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-06-20 18:13:11,758 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 350 flow. Second operand 5 states and 130 transitions. [2024-06-20 18:13:11,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 75 transitions, 503 flow [2024-06-20 18:13:11,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 75 transitions, 469 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-20 18:13:11,764 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 293 flow [2024-06-20 18:13:11,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=293, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2024-06-20 18:13:11,765 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2024-06-20 18:13:11,765 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 293 flow [2024-06-20 18:13:11,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:13:11,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:13:11,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:13:11,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-20 18:13:11,766 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 18:13:11,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:13:11,766 INFO L85 PathProgramCache]: Analyzing trace with hash 932310472, now seen corresponding path program 1 times [2024-06-20 18:13:11,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:13:11,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286648614] [2024-06-20 18:13:11,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:13:11,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:13:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:13:11,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:13:11,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:13:11,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286648614] [2024-06-20 18:13:11,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286648614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:13:11,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:13:11,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 18:13:11,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775590897] [2024-06-20 18:13:11,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:13:11,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 18:13:11,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:13:11,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 18:13:11,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-20 18:13:11,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-20 18:13:11,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 293 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:13:11,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:13:11,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-20 18:13:11,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:13:12,026 INFO L124 PetriNetUnfolderBase]: 457/892 cut-off events. [2024-06-20 18:13:12,027 INFO L125 PetriNetUnfolderBase]: For 1359/1380 co-relation queries the response was YES. [2024-06-20 18:13:12,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2805 conditions, 892 events. 457/892 cut-off events. For 1359/1380 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4463 event pairs, 91 based on Foata normal form. 28/899 useless extension candidates. Maximal degree in co-relation 2780. Up to 313 conditions per place. [2024-06-20 18:13:12,032 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 39 selfloop transitions, 22 changer transitions 17/91 dead transitions. [2024-06-20 18:13:12,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 91 transitions, 608 flow [2024-06-20 18:13:12,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 18:13:12,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 18:13:12,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-06-20 18:13:12,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-20 18:13:12,034 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 293 flow. Second operand 6 states and 160 transitions. [2024-06-20 18:13:12,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 91 transitions, 608 flow [2024-06-20 18:13:12,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 91 transitions, 570 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-20 18:13:12,038 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 339 flow [2024-06-20 18:13:12,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=339, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2024-06-20 18:13:12,039 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2024-06-20 18:13:12,039 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 339 flow [2024-06-20 18:13:12,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:13:12,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:13:12,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:13:12,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-20 18:13:12,040 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 18:13:12,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:13:12,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1133114382, now seen corresponding path program 2 times [2024-06-20 18:13:12,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:13:12,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001133478] [2024-06-20 18:13:12,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:13:12,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:13:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:13:12,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:13:12,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:13:12,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001133478] [2024-06-20 18:13:12,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001133478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:13:12,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:13:12,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 18:13:12,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879398759] [2024-06-20 18:13:12,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:13:12,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 18:13:12,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:13:12,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 18:13:12,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-20 18:13:12,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-20 18:13:12,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 339 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:13:12,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:13:12,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-20 18:13:12,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:13:12,298 INFO L124 PetriNetUnfolderBase]: 322/639 cut-off events. [2024-06-20 18:13:12,299 INFO L125 PetriNetUnfolderBase]: For 1287/1298 co-relation queries the response was YES. [2024-06-20 18:13:12,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2158 conditions, 639 events. 322/639 cut-off events. For 1287/1298 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2892 event pairs, 79 based on Foata normal form. 16/638 useless extension candidates. Maximal degree in co-relation 2133. Up to 219 conditions per place. [2024-06-20 18:13:12,305 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 38 selfloop transitions, 19 changer transitions 5/75 dead transitions. [2024-06-20 18:13:12,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 531 flow [2024-06-20 18:13:12,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 18:13:12,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 18:13:12,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-20 18:13:12,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6208333333333333 [2024-06-20 18:13:12,307 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 339 flow. Second operand 6 states and 149 transitions. [2024-06-20 18:13:12,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 531 flow [2024-06-20 18:13:12,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 75 transitions, 495 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-20 18:13:12,311 INFO L231 Difference]: Finished difference. Result has 66 places, 48 transitions, 323 flow [2024-06-20 18:13:12,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=323, PETRI_PLACES=66, PETRI_TRANSITIONS=48} [2024-06-20 18:13:12,312 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2024-06-20 18:13:12,312 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 48 transitions, 323 flow [2024-06-20 18:13:12,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:13:12,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:13:12,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:13:12,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-20 18:13:12,313 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 18:13:12,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:13:12,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1896822260, now seen corresponding path program 3 times [2024-06-20 18:13:12,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:13:12,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503527341] [2024-06-20 18:13:12,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:13:12,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:13:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:13:12,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:13:12,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:13:12,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503527341] [2024-06-20 18:13:12,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503527341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:13:12,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:13:12,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 18:13:12,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547735204] [2024-06-20 18:13:12,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:13:12,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 18:13:12,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:13:12,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 18:13:12,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-20 18:13:12,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-20 18:13:12,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 48 transitions, 323 flow. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:13:12,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:13:12,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-20 18:13:12,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:13:12,590 INFO L124 PetriNetUnfolderBase]: 295/593 cut-off events. [2024-06-20 18:13:12,590 INFO L125 PetriNetUnfolderBase]: For 1535/1546 co-relation queries the response was YES. [2024-06-20 18:13:12,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2005 conditions, 593 events. 295/593 cut-off events. For 1535/1546 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2652 event pairs, 76 based on Foata normal form. 16/592 useless extension candidates. Maximal degree in co-relation 1979. Up to 178 conditions per place. [2024-06-20 18:13:12,594 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 35 selfloop transitions, 18 changer transitions 11/77 dead transitions. [2024-06-20 18:13:12,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 77 transitions, 546 flow [2024-06-20 18:13:12,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 18:13:12,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 18:13:12,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-20 18:13:12,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.571875 [2024-06-20 18:13:12,596 INFO L175 Difference]: Start difference. First operand has 66 places, 48 transitions, 323 flow. Second operand 8 states and 183 transitions. [2024-06-20 18:13:12,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 77 transitions, 546 flow [2024-06-20 18:13:12,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 77 transitions, 504 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-20 18:13:12,599 INFO L231 Difference]: Finished difference. Result has 69 places, 47 transitions, 316 flow [2024-06-20 18:13:12,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=316, PETRI_PLACES=69, PETRI_TRANSITIONS=47} [2024-06-20 18:13:12,600 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 27 predicate places. [2024-06-20 18:13:12,600 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 47 transitions, 316 flow [2024-06-20 18:13:12,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:13:12,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:13:12,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:13:12,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-20 18:13:12,601 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 18:13:12,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:13:12,602 INFO L85 PathProgramCache]: Analyzing trace with hash 127624856, now seen corresponding path program 4 times [2024-06-20 18:13:12,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:13:12,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672005940] [2024-06-20 18:13:12,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:13:12,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:13:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:13:12,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:13:12,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:13:12,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672005940] [2024-06-20 18:13:12,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672005940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:13:12,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:13:12,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 18:13:12,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386956285] [2024-06-20 18:13:12,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:13:12,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 18:13:12,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:13:12,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 18:13:12,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-20 18:13:12,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-20 18:13:12,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 47 transitions, 316 flow. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:13:12,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:13:12,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-20 18:13:12,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:13:12,881 INFO L124 PetriNetUnfolderBase]: 259/534 cut-off events. [2024-06-20 18:13:12,881 INFO L125 PetriNetUnfolderBase]: For 1580/1589 co-relation queries the response was YES. [2024-06-20 18:13:12,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1818 conditions, 534 events. 259/534 cut-off events. For 1580/1589 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2363 event pairs, 72 based on Foata normal form. 22/547 useless extension candidates. Maximal degree in co-relation 1792. Up to 144 conditions per place. [2024-06-20 18:13:12,884 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 29 selfloop transitions, 12 changer transitions 27/78 dead transitions. [2024-06-20 18:13:12,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 78 transitions, 556 flow [2024-06-20 18:13:12,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 18:13:12,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 18:13:12,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-20 18:13:12,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578125 [2024-06-20 18:13:12,886 INFO L175 Difference]: Start difference. First operand has 69 places, 47 transitions, 316 flow. Second operand 8 states and 185 transitions. [2024-06-20 18:13:12,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 78 transitions, 556 flow [2024-06-20 18:13:12,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 78 transitions, 506 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-20 18:13:12,890 INFO L231 Difference]: Finished difference. Result has 69 places, 37 transitions, 230 flow [2024-06-20 18:13:12,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=230, PETRI_PLACES=69, PETRI_TRANSITIONS=37} [2024-06-20 18:13:12,891 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 27 predicate places. [2024-06-20 18:13:12,891 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 37 transitions, 230 flow [2024-06-20 18:13:12,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:13:12,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:13:12,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:13:12,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-20 18:13:12,892 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 18:13:12,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:13:12,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1417000016, now seen corresponding path program 1 times [2024-06-20 18:13:12,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:13:12,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001335372] [2024-06-20 18:13:12,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:13:12,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:13:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:13:12,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:13:12,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:13:12,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001335372] [2024-06-20 18:13:12,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001335372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:13:12,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:13:12,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 18:13:12,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612081873] [2024-06-20 18:13:12,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:13:12,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 18:13:12,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:13:12,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 18:13:12,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-20 18:13:13,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-20 18:13:13,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 37 transitions, 230 flow. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:13:13,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:13:13,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-20 18:13:13,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:13:13,074 INFO L124 PetriNetUnfolderBase]: 34/93 cut-off events. [2024-06-20 18:13:13,074 INFO L125 PetriNetUnfolderBase]: For 182/182 co-relation queries the response was YES. [2024-06-20 18:13:13,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 93 events. 34/93 cut-off events. For 182/182 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 241 event pairs, 4 based on Foata normal form. 16/109 useless extension candidates. Maximal degree in co-relation 345. Up to 20 conditions per place. [2024-06-20 18:13:13,075 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2024-06-20 18:13:13,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 35 transitions, 229 flow [2024-06-20 18:13:13,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 18:13:13,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 18:13:13,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-20 18:13:13,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471875 [2024-06-20 18:13:13,076 INFO L175 Difference]: Start difference. First operand has 69 places, 37 transitions, 230 flow. Second operand 8 states and 151 transitions. [2024-06-20 18:13:13,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 35 transitions, 229 flow [2024-06-20 18:13:13,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 35 transitions, 175 flow, removed 7 selfloop flow, removed 18 redundant places. [2024-06-20 18:13:13,078 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2024-06-20 18:13:13,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2024-06-20 18:13:13,079 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2024-06-20 18:13:13,079 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2024-06-20 18:13:13,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:13:13,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-20 18:13:13,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-20 18:13:13,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-20 18:13:13,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-20 18:13:13,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-20 18:13:13,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-20 18:13:13,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-20 18:13:13,083 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1, 1] [2024-06-20 18:13:13,086 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-20 18:13:13,086 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-20 18:13:13,089 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-20 18:13:13,089 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-20 18:13:13,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.06 06:13:13 BasicIcfg [2024-06-20 18:13:13,090 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-20 18:13:13,091 INFO L158 Benchmark]: Toolchain (without parser) took 6176.00ms. Allocated memory was 157.3MB in the beginning and 278.9MB in the end (delta: 121.6MB). Free memory was 100.5MB in the beginning and 128.4MB in the end (delta: -27.9MB). Peak memory consumption was 95.5MB. Max. memory is 16.1GB. [2024-06-20 18:13:13,091 INFO L158 Benchmark]: Witness Parser took 0.19ms. Allocated memory is still 157.3MB. Free memory is still 117.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 18:13:13,091 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 157.3MB. Free memory was 114.4MB in the beginning and 114.3MB in the end (delta: 104.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 18:13:13,091 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.42ms. Allocated memory is still 157.3MB. Free memory was 100.5MB in the beginning and 84.9MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-06-20 18:13:13,092 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.32ms. Allocated memory is still 157.3MB. Free memory was 84.6MB in the beginning and 82.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 18:13:13,092 INFO L158 Benchmark]: Boogie Preprocessor took 44.73ms. Allocated memory is still 157.3MB. Free memory was 82.5MB in the beginning and 80.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 18:13:13,092 INFO L158 Benchmark]: RCFGBuilder took 719.56ms. Allocated memory was 157.3MB in the beginning and 224.4MB in the end (delta: 67.1MB). Free memory was 80.2MB in the beginning and 166.6MB in the end (delta: -86.4MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. [2024-06-20 18:13:13,093 INFO L158 Benchmark]: TraceAbstraction took 5014.55ms. Allocated memory was 224.4MB in the beginning and 278.9MB in the end (delta: 54.5MB). Free memory was 166.6MB in the beginning and 128.4MB in the end (delta: 38.2MB). Peak memory consumption was 92.7MB. Max. memory is 16.1GB. [2024-06-20 18:13:13,094 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 0.19ms. Allocated memory is still 157.3MB. Free memory is still 117.2MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.16ms. Allocated memory is still 157.3MB. Free memory was 114.4MB in the beginning and 114.3MB in the end (delta: 104.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 318.42ms. Allocated memory is still 157.3MB. Free memory was 100.5MB in the beginning and 84.9MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.32ms. Allocated memory is still 157.3MB. Free memory was 84.6MB in the beginning and 82.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.73ms. Allocated memory is still 157.3MB. Free memory was 82.5MB in the beginning and 80.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 719.56ms. Allocated memory was 157.3MB in the beginning and 224.4MB in the end (delta: 67.1MB). Free memory was 80.2MB in the beginning and 166.6MB in the end (delta: -86.4MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. * TraceAbstraction took 5014.55ms. Allocated memory was 224.4MB in the beginning and 278.9MB in the end (delta: 54.5MB). Free memory was 166.6MB in the beginning and 128.4MB in the end (delta: 38.2MB). Peak memory consumption was 92.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 117]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 118]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 119]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 66 locations, 6 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: 4.9s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 609 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 514 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 103 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1573 IncrementalHoareTripleChecker+Invalid, 1676 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 103 mSolverCounterUnsat, 15 mSDtfsCounter, 1573 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=350occurred in iteration=6, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 217 NumberOfCodeBlocks, 217 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 205 ConstructedInterpolants, 0 QuantifiedInterpolants, 1033 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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! [2024-06-20 18:13:13,132 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