./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/triangular-longer-1.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/triangular-longer-1.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longer-1.i ./goblint.2024-05-07_14-17-48.files/protection/triangular-longer-1.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 12:37:45,860 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 12:37:45,914 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 12:37:45,917 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 12:37:45,921 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 12:37:45,938 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 12:37:45,945 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 12:37:45,945 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 12:37:45,946 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 12:37:45,952 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 12:37:45,952 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 12:37:45,952 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 12:37:45,953 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 12:37:45,953 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 12:37:45,953 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 12:37:45,953 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 12:37:45,953 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 12:37:45,954 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 12:37:45,954 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 12:37:45,954 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 12:37:45,954 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 12:37:45,955 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 12:37:45,955 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 12:37:45,955 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 12:37:45,955 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 12:37:45,955 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 12:37:45,956 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 12:37:45,956 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 12:37:45,956 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 12:37:45,957 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 12:37:45,957 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 12:37:45,958 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 12:37:45,958 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:37:45,958 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 12:37:45,958 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 12:37:45,958 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 12:37:45,958 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 12:37:45,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 12:37:45,959 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 12:37:45,959 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 12:37:45,959 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 12:37:45,959 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 12:37:45,960 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 12:37:45,960 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 12:37:46,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 12:37:46,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 12:37:46,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 12:37:46,187 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 12:37:46,187 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 12:37:46,188 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-1.i [2024-05-12 12:37:47,214 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 12:37:47,381 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 12:37:47,381 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i [2024-05-12 12:37:47,391 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5350fa390/ec2aaf3809cf444487c0db105875f54b/FLAG59ce918c6 [2024-05-12 12:37:47,407 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5350fa390/ec2aaf3809cf444487c0db105875f54b [2024-05-12 12:37:47,410 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 12:37:47,411 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 12:37:47,411 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/triangular-longer-1.yml/witness.yml [2024-05-12 12:37:47,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 12:37:47,487 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 12:37:47,488 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 12:37:47,488 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 12:37:47,491 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 12:37:47,492 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:37:47" (1/2) ... [2024-05-12 12:37:47,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64abe762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:37:47, skipping insertion in model container [2024-05-12 12:37:47,492 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:37:47" (1/2) ... [2024-05-12 12:37:47,493 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2c7cd4c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:37:47, skipping insertion in model container [2024-05-12 12:37:47,494 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:37:47" (2/2) ... [2024-05-12 12:37:47,494 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64abe762 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:37:47, skipping insertion in model container [2024-05-12 12:37:47,494 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:37:47" (2/2) ... [2024-05-12 12:37:47,494 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 12:37:47,518 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 12:37:47,519 INFO L97 edCorrectnessWitness]: Location invariant before [L715-L715] (! multithreaded || (4 <= j && j % 2 == 0)) && (! multithreaded || (3 <= i && i % 2 == 1)) [2024-05-12 12:37:47,519 INFO L97 edCorrectnessWitness]: Location invariant before [L714-L714] (! multithreaded || (4 <= j && j % 2 == 0)) && (! multithreaded || (3 <= i && i % 2 == 1)) [2024-05-12 12:37:47,520 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 12:37:47,520 INFO L106 edCorrectnessWitness]: ghost_update [L713-L713] multithreaded = 1; [2024-05-12 12:37:47,552 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 12:37:47,763 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i[30961,30974] [2024-05-12 12:37:47,766 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:37:47,772 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 12:37:47,860 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i[30961,30974] [2024-05-12 12:37:47,861 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:37:47,893 INFO L206 MainTranslator]: Completed translation [2024-05-12 12:37:47,894 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:37:47 WrapperNode [2024-05-12 12:37:47,894 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 12:37:47,895 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 12:37:47,895 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 12:37:47,896 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 12:37:47,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:37:47" (1/1) ... [2024-05-12 12:37:47,925 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:37:47" (1/1) ... [2024-05-12 12:37:47,944 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 50 [2024-05-12 12:37:47,945 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 12:37:47,946 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 12:37:47,946 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 12:37:47,946 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 12:37:47,953 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:37:47" (1/1) ... [2024-05-12 12:37:47,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:37:47" (1/1) ... [2024-05-12 12:37:47,961 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:37:47" (1/1) ... [2024-05-12 12:37:47,983 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-05-12 12:37:47,984 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:37:47" (1/1) ... [2024-05-12 12:37:47,984 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:37:47" (1/1) ... [2024-05-12 12:37:47,993 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:37:47" (1/1) ... [2024-05-12 12:37:47,995 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:37:47" (1/1) ... [2024-05-12 12:37:47,997 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:37:47" (1/1) ... [2024-05-12 12:37:48,000 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:37:47" (1/1) ... [2024-05-12 12:37:48,002 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 12:37:48,002 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 12:37:48,005 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 12:37:48,006 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 12:37:48,006 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:37:47" (1/1) ... [2024-05-12 12:37:48,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:37:48,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:37:48,037 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-05-12 12:37:48,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-05-12 12:37:48,069 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-05-12 12:37:48,070 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-05-12 12:37:48,070 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-05-12 12:37:48,070 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-05-12 12:37:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 12:37:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 12:37:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 12:37:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 12:37:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 12:37:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 12:37:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 12:37:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 12:37:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 12:37:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 12:37:48,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 12:37:48,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 12:37:48,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 12:37:48,074 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 12:37:48,184 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 12:37:48,185 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 12:37:48,369 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 12:37:48,369 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 12:37:48,443 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 12:37:48,444 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-05-12 12:37:48,444 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:37:48 BoogieIcfgContainer [2024-05-12 12:37:48,444 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 12:37:48,447 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 12:37:48,447 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 12:37:48,449 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 12:37:48,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 12:37:47" (1/4) ... [2024-05-12 12:37:48,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4853f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:37:48, skipping insertion in model container [2024-05-12 12:37:48,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:37:47" (2/4) ... [2024-05-12 12:37:48,452 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4853f6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 12:37:48, skipping insertion in model container [2024-05-12 12:37:48,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:37:47" (3/4) ... [2024-05-12 12:37:48,452 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4853f6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 12:37:48, skipping insertion in model container [2024-05-12 12:37:48,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:37:48" (4/4) ... [2024-05-12 12:37:48,453 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2024-05-12 12:37:48,465 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 12:37:48,466 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-05-12 12:37:48,466 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 12:37:48,506 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 12:37:48,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 30 transitions, 68 flow [2024-05-12 12:37:48,554 INFO L124 PetriNetUnfolderBase]: 3/28 cut-off events. [2024-05-12 12:37:48,554 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:37:48,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 3/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-05-12 12:37:48,559 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 30 transitions, 68 flow [2024-05-12 12:37:48,561 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 28 transitions, 62 flow [2024-05-12 12:37:48,568 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 12:37:48,576 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;@705af25a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 12:37:48,576 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-05-12 12:37:48,584 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 12:37:48,587 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 12:37:48,587 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:37:48,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:37:48,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 12:37:48,588 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:37:48,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:37:48,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1410544718, now seen corresponding path program 1 times [2024-05-12 12:37:48,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:37:48,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025061378] [2024-05-12 12:37:48,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:37:48,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:37:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:37:49,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:37:49,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:37:49,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025061378] [2024-05-12 12:37:49,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025061378] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:37:49,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:37:49,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 12:37:49,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43889692] [2024-05-12 12:37:49,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:37:49,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:37:49,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:37:49,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:37:49,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:37:49,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-05-12 12:37:49,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:37:49,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:37:49,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-05-12 12:37:49,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:37:49,289 INFO L124 PetriNetUnfolderBase]: 172/327 cut-off events. [2024-05-12 12:37:49,289 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-05-12 12:37:49,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 628 conditions, 327 events. 172/327 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1306 event pairs, 54 based on Foata normal form. 20/327 useless extension candidates. Maximal degree in co-relation 614. Up to 211 conditions per place. [2024-05-12 12:37:49,293 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 25 selfloop transitions, 3 changer transitions 2/38 dead transitions. [2024-05-12 12:37:49,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 38 transitions, 145 flow [2024-05-12 12:37:49,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:37:49,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:37:49,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-05-12 12:37:49,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2024-05-12 12:37:49,303 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 62 flow. Second operand 3 states and 64 transitions. [2024-05-12 12:37:49,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 38 transitions, 145 flow [2024-05-12 12:37:49,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 142 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:37:49,308 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 77 flow [2024-05-12 12:37:49,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2024-05-12 12:37:49,313 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2024-05-12 12:37:49,313 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 77 flow [2024-05-12 12:37:49,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:37:49,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:37:49,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:37:49,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 12:37:49,314 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:37:49,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:37:49,316 INFO L85 PathProgramCache]: Analyzing trace with hash -421416505, now seen corresponding path program 1 times [2024-05-12 12:37:49,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:37:49,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671101111] [2024-05-12 12:37:49,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:37:49,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:37:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:37:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:37:49,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:37:49,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671101111] [2024-05-12 12:37:49,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671101111] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:37:49,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:37:49,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:37:49,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071408104] [2024-05-12 12:37:49,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:37:49,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:37:49,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:37:49,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:37:49,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:37:49,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-05-12 12:37:49,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 77 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:37:49,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:37:49,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-05-12 12:37:49,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:37:49,803 INFO L124 PetriNetUnfolderBase]: 160/318 cut-off events. [2024-05-12 12:37:49,804 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2024-05-12 12:37:49,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 318 events. 160/318 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1260 event pairs, 37 based on Foata normal form. 21/335 useless extension candidates. Maximal degree in co-relation 683. Up to 103 conditions per place. [2024-05-12 12:37:49,807 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 36 selfloop transitions, 4 changer transitions 0/48 dead transitions. [2024-05-12 12:37:49,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 48 transitions, 205 flow [2024-05-12 12:37:49,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:37:49,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:37:49,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-05-12 12:37:49,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-05-12 12:37:49,810 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 77 flow. Second operand 5 states and 93 transitions. [2024-05-12 12:37:49,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 48 transitions, 205 flow [2024-05-12 12:37:49,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 48 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:37:49,813 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 91 flow [2024-05-12 12:37:49,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=91, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2024-05-12 12:37:49,815 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2024-05-12 12:37:49,815 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 91 flow [2024-05-12 12:37:49,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:37:49,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:37:49,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:37:49,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 12:37:49,816 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:37:49,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:37:49,816 INFO L85 PathProgramCache]: Analyzing trace with hash 280436029, now seen corresponding path program 1 times [2024-05-12 12:37:49,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:37:49,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148699262] [2024-05-12 12:37:49,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:37:49,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:37:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:37:49,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:37:49,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:37:49,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148699262] [2024-05-12 12:37:49,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148699262] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:37:49,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:37:49,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:37:49,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850487318] [2024-05-12 12:37:49,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:37:49,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:37:49,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:37:49,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:37:49,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:37:49,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-05-12 12:37:49,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:37:49,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:37:49,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-05-12 12:37:49,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:37:50,067 INFO L124 PetriNetUnfolderBase]: 244/492 cut-off events. [2024-05-12 12:37:50,067 INFO L125 PetriNetUnfolderBase]: For 337/337 co-relation queries the response was YES. [2024-05-12 12:37:50,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1076 conditions, 492 events. 244/492 cut-off events. For 337/337 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2275 event pairs, 88 based on Foata normal form. 18/497 useless extension candidates. Maximal degree in co-relation 1058. Up to 255 conditions per place. [2024-05-12 12:37:50,072 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 27 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2024-05-12 12:37:50,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 38 transitions, 175 flow [2024-05-12 12:37:50,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:37:50,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:37:50,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2024-05-12 12:37:50,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 12:37:50,075 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 91 flow. Second operand 5 states and 75 transitions. [2024-05-12 12:37:50,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 38 transitions, 175 flow [2024-05-12 12:37:50,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 38 transitions, 169 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 12:37:50,078 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 94 flow [2024-05-12 12:37:50,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=94, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2024-05-12 12:37:50,079 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 5 predicate places. [2024-05-12 12:37:50,080 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 94 flow [2024-05-12 12:37:50,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:37:50,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:37:50,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:37:50,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 12:37:50,081 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:37:50,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:37:50,081 INFO L85 PathProgramCache]: Analyzing trace with hash 77939701, now seen corresponding path program 1 times [2024-05-12 12:37:50,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:37:50,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103415779] [2024-05-12 12:37:50,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:37:50,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:37:50,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:37:50,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:37:50,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:37:50,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103415779] [2024-05-12 12:37:50,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103415779] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:37:50,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:37:50,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:37:50,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998334369] [2024-05-12 12:37:50,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:37:50,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:37:50,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:37:50,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:37:50,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:37:50,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-05-12 12:37:50,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:37:50,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:37:50,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-05-12 12:37:50,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:37:50,294 INFO L124 PetriNetUnfolderBase]: 532/925 cut-off events. [2024-05-12 12:37:50,294 INFO L125 PetriNetUnfolderBase]: For 570/570 co-relation queries the response was YES. [2024-05-12 12:37:50,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2221 conditions, 925 events. 532/925 cut-off events. For 570/570 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4200 event pairs, 136 based on Foata normal form. 0/890 useless extension candidates. Maximal degree in co-relation 2202. Up to 397 conditions per place. [2024-05-12 12:37:50,298 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 31 selfloop transitions, 6 changer transitions 23/64 dead transitions. [2024-05-12 12:37:50,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 64 transitions, 339 flow [2024-05-12 12:37:50,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:37:50,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:37:50,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-05-12 12:37:50,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-05-12 12:37:50,301 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 94 flow. Second operand 6 states and 102 transitions. [2024-05-12 12:37:50,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 64 transitions, 339 flow [2024-05-12 12:37:50,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 64 transitions, 336 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:37:50,304 INFO L231 Difference]: Finished difference. Result has 44 places, 30 transitions, 129 flow [2024-05-12 12:37:50,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=44, PETRI_TRANSITIONS=30} [2024-05-12 12:37:50,305 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 12 predicate places. [2024-05-12 12:37:50,306 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 30 transitions, 129 flow [2024-05-12 12:37:50,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:37:50,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:37:50,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:37:50,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 12:37:50,307 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:37:50,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:37:50,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2024798661, now seen corresponding path program 1 times [2024-05-12 12:37:50,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:37:50,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663255831] [2024-05-12 12:37:50,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:37:50,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:37:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:37:50,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:37:50,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:37:50,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663255831] [2024-05-12 12:37:50,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663255831] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:37:50,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:37:50,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:37:50,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605716909] [2024-05-12 12:37:50,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:37:50,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 12:37:50,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:37:50,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 12:37:50,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-05-12 12:37:50,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-05-12 12:37:50,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 30 transitions, 129 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:37:50,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:37:50,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-05-12 12:37:50,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:37:50,595 INFO L124 PetriNetUnfolderBase]: 469/852 cut-off events. [2024-05-12 12:37:50,595 INFO L125 PetriNetUnfolderBase]: For 806/806 co-relation queries the response was YES. [2024-05-12 12:37:50,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2296 conditions, 852 events. 469/852 cut-off events. For 806/806 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3811 event pairs, 109 based on Foata normal form. 27/875 useless extension candidates. Maximal degree in co-relation 2273. Up to 379 conditions per place. [2024-05-12 12:37:50,600 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 50 selfloop transitions, 11 changer transitions 20/85 dead transitions. [2024-05-12 12:37:50,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 85 transitions, 489 flow [2024-05-12 12:37:50,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:37:50,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:37:50,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-05-12 12:37:50,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5481481481481482 [2024-05-12 12:37:50,605 INFO L175 Difference]: Start difference. First operand has 44 places, 30 transitions, 129 flow. Second operand 9 states and 148 transitions. [2024-05-12 12:37:50,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 85 transitions, 489 flow [2024-05-12 12:37:50,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 85 transitions, 468 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-05-12 12:37:50,615 INFO L231 Difference]: Finished difference. Result has 53 places, 37 transitions, 223 flow [2024-05-12 12:37:50,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=223, PETRI_PLACES=53, PETRI_TRANSITIONS=37} [2024-05-12 12:37:50,617 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 21 predicate places. [2024-05-12 12:37:50,617 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 37 transitions, 223 flow [2024-05-12 12:37:50,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:37:50,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:37:50,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:37:50,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 12:37:50,619 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:37:50,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:37:50,619 INFO L85 PathProgramCache]: Analyzing trace with hash 2039593339, now seen corresponding path program 2 times [2024-05-12 12:37:50,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:37:50,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851081875] [2024-05-12 12:37:50,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:37:50,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:37:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:37:50,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:37:50,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:37:50,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851081875] [2024-05-12 12:37:50,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851081875] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:37:50,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:37:50,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:37:50,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335270789] [2024-05-12 12:37:50,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:37:50,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 12:37:50,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:37:50,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 12:37:50,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-05-12 12:37:50,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-05-12 12:37:50,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 37 transitions, 223 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:37:50,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:37:50,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-05-12 12:37:50,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:37:50,859 INFO L124 PetriNetUnfolderBase]: 415/768 cut-off events. [2024-05-12 12:37:50,859 INFO L125 PetriNetUnfolderBase]: For 1832/1832 co-relation queries the response was YES. [2024-05-12 12:37:50,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2434 conditions, 768 events. 415/768 cut-off events. For 1832/1832 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3417 event pairs, 109 based on Foata normal form. 45/809 useless extension candidates. Maximal degree in co-relation 2405. Up to 367 conditions per place. [2024-05-12 12:37:50,863 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 41 selfloop transitions, 11 changer transitions 27/83 dead transitions. [2024-05-12 12:37:50,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 83 transitions, 598 flow [2024-05-12 12:37:50,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:37:50,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:37:50,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-05-12 12:37:50,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5458333333333333 [2024-05-12 12:37:50,865 INFO L175 Difference]: Start difference. First operand has 53 places, 37 transitions, 223 flow. Second operand 8 states and 131 transitions. [2024-05-12 12:37:50,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 83 transitions, 598 flow [2024-05-12 12:37:50,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 83 transitions, 578 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-05-12 12:37:50,869 INFO L231 Difference]: Finished difference. Result has 59 places, 39 transitions, 279 flow [2024-05-12 12:37:50,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=279, PETRI_PLACES=59, PETRI_TRANSITIONS=39} [2024-05-12 12:37:50,869 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 27 predicate places. [2024-05-12 12:37:50,870 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 39 transitions, 279 flow [2024-05-12 12:37:50,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:37:50,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:37:50,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:37:50,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 12:37:50,870 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:37:50,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:37:50,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1855387724, now seen corresponding path program 1 times [2024-05-12 12:37:50,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:37:50,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115741114] [2024-05-12 12:37:50,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:37:50,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:37:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:37:50,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:37:50,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:37:50,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115741114] [2024-05-12 12:37:50,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115741114] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:37:50,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:37:50,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:37:50,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993492613] [2024-05-12 12:37:50,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:37:50,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:37:50,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:37:50,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:37:50,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:37:50,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-05-12 12:37:50,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 39 transitions, 279 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:37:50,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:37:50,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-05-12 12:37:50,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:37:51,163 INFO L124 PetriNetUnfolderBase]: 550/1012 cut-off events. [2024-05-12 12:37:51,164 INFO L125 PetriNetUnfolderBase]: For 4296/4296 co-relation queries the response was YES. [2024-05-12 12:37:51,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3540 conditions, 1012 events. 550/1012 cut-off events. For 4296/4296 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4709 event pairs, 70 based on Foata normal form. 27/1031 useless extension candidates. Maximal degree in co-relation 3507. Up to 307 conditions per place. [2024-05-12 12:37:51,170 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 56 selfloop transitions, 20 changer transitions 23/103 dead transitions. [2024-05-12 12:37:51,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 103 transitions, 797 flow [2024-05-12 12:37:51,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:37:51,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:37:51,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-05-12 12:37:51,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5363636363636364 [2024-05-12 12:37:51,172 INFO L175 Difference]: Start difference. First operand has 59 places, 39 transitions, 279 flow. Second operand 11 states and 177 transitions. [2024-05-12 12:37:51,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 103 transitions, 797 flow [2024-05-12 12:37:51,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 103 transitions, 702 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-05-12 12:37:51,179 INFO L231 Difference]: Finished difference. Result has 66 places, 45 transitions, 379 flow [2024-05-12 12:37:51,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=379, PETRI_PLACES=66, PETRI_TRANSITIONS=45} [2024-05-12 12:37:51,181 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 34 predicate places. [2024-05-12 12:37:51,181 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 45 transitions, 379 flow [2024-05-12 12:37:51,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:37:51,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:37:51,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:37:51,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 12:37:51,182 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:37:51,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:37:51,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1849717684, now seen corresponding path program 2 times [2024-05-12 12:37:51,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:37:51,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889468372] [2024-05-12 12:37:51,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:37:51,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:37:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:37:51,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:37:51,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:37:51,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889468372] [2024-05-12 12:37:51,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889468372] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:37:51,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:37:51,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:37:51,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234289859] [2024-05-12 12:37:51,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:37:51,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:37:51,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:37:51,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:37:51,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:37:51,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-05-12 12:37:51,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 45 transitions, 379 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:37:51,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:37:51,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-05-12 12:37:51,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:37:51,492 INFO L124 PetriNetUnfolderBase]: 595/1096 cut-off events. [2024-05-12 12:37:51,492 INFO L125 PetriNetUnfolderBase]: For 6834/6834 co-relation queries the response was YES. [2024-05-12 12:37:51,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4305 conditions, 1096 events. 595/1096 cut-off events. For 6834/6834 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 5191 event pairs, 76 based on Foata normal form. 63/1151 useless extension candidates. Maximal degree in co-relation 4269. Up to 280 conditions per place. [2024-05-12 12:37:51,498 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 47 selfloop transitions, 22 changer transitions 33/106 dead transitions. [2024-05-12 12:37:51,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 106 transitions, 957 flow [2024-05-12 12:37:51,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:37:51,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:37:51,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-05-12 12:37:51,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2024-05-12 12:37:51,500 INFO L175 Difference]: Start difference. First operand has 66 places, 45 transitions, 379 flow. Second operand 11 states and 174 transitions. [2024-05-12 12:37:51,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 106 transitions, 957 flow [2024-05-12 12:37:51,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 106 transitions, 882 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-05-12 12:37:51,509 INFO L231 Difference]: Finished difference. Result has 74 places, 48 transitions, 458 flow [2024-05-12 12:37:51,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=458, PETRI_PLACES=74, PETRI_TRANSITIONS=48} [2024-05-12 12:37:51,510 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2024-05-12 12:37:51,510 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 48 transitions, 458 flow [2024-05-12 12:37:51,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:37:51,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:37:51,511 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:37:51,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 12:37:51,511 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:37:51,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:37:51,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1675038584, now seen corresponding path program 1 times [2024-05-12 12:37:51,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:37:51,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131128014] [2024-05-12 12:37:51,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:37:51,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:37:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:37:51,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:37:51,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:37:51,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131128014] [2024-05-12 12:37:51,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131128014] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:37:51,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262690565] [2024-05-12 12:37:51,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:37:51,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:37:51,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:37:51,594 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 12:37:51,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-05-12 12:37:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:37:51,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2024-05-12 12:37:51,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:37:51,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:37:51,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:37:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:37:51,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262690565] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:37:51,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 12:37:51,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-05-12 12:37:51,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005849250] [2024-05-12 12:37:51,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 12:37:51,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:37:51,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:37:51,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:37:51,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:37:51,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-05-12 12:37:51,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 48 transitions, 458 flow. Second operand has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 13 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:37:51,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:37:51,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-05-12 12:37:51,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:37:52,300 INFO L124 PetriNetUnfolderBase]: 676/1257 cut-off events. [2024-05-12 12:37:52,300 INFO L125 PetriNetUnfolderBase]: For 11383/11383 co-relation queries the response was YES. [2024-05-12 12:37:52,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5442 conditions, 1257 events. 676/1257 cut-off events. For 11383/11383 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 5672 event pairs, 193 based on Foata normal form. 63/1316 useless extension candidates. Maximal degree in co-relation 5402. Up to 655 conditions per place. [2024-05-12 12:37:52,309 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 68 selfloop transitions, 17 changer transitions 67/156 dead transitions. [2024-05-12 12:37:52,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 156 transitions, 1532 flow [2024-05-12 12:37:52,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-05-12 12:37:52,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-05-12 12:37:52,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 292 transitions. [2024-05-12 12:37:52,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.512280701754386 [2024-05-12 12:37:52,310 INFO L175 Difference]: Start difference. First operand has 74 places, 48 transitions, 458 flow. Second operand 19 states and 292 transitions. [2024-05-12 12:37:52,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 156 transitions, 1532 flow [2024-05-12 12:37:52,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 156 transitions, 1439 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-05-12 12:37:52,335 INFO L231 Difference]: Finished difference. Result has 94 places, 54 transitions, 593 flow [2024-05-12 12:37:52,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=593, PETRI_PLACES=94, PETRI_TRANSITIONS=54} [2024-05-12 12:37:52,336 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 62 predicate places. [2024-05-12 12:37:52,336 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 54 transitions, 593 flow [2024-05-12 12:37:52,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 13 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:37:52,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:37:52,336 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:37:52,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-05-12 12:37:52,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:37:52,547 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:37:52,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:37:52,548 INFO L85 PathProgramCache]: Analyzing trace with hash 846029844, now seen corresponding path program 2 times [2024-05-12 12:37:52,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:37:52,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910910484] [2024-05-12 12:37:52,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:37:52,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:37:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:37:52,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:37:52,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:37:52,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910910484] [2024-05-12 12:37:52,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910910484] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:37:52,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125313308] [2024-05-12 12:37:52,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-05-12 12:37:52,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:37:52,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:37:52,655 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 12:37:52,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-05-12 12:37:52,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-05-12 12:37:52,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 12:37:52,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2024-05-12 12:37:52,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:37:52,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:37:52,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:37:52,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:37:52,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125313308] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:37:52,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 12:37:52,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-05-12 12:37:52,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129846582] [2024-05-12 12:37:52,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 12:37:52,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:37:52,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:37:52,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:37:52,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:37:52,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-05-12 12:37:52,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 54 transitions, 593 flow. Second operand has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 13 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:37:52,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:37:52,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-05-12 12:37:52,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:37:53,387 INFO L124 PetriNetUnfolderBase]: 964/1773 cut-off events. [2024-05-12 12:37:53,388 INFO L125 PetriNetUnfolderBase]: For 38849/38849 co-relation queries the response was YES. [2024-05-12 12:37:53,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10111 conditions, 1773 events. 964/1773 cut-off events. For 38849/38849 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8774 event pairs, 88 based on Foata normal form. 72/1841 useless extension candidates. Maximal degree in co-relation 10061. Up to 403 conditions per place. [2024-05-12 12:37:53,401 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 91 selfloop transitions, 47 changer transitions 80/222 dead transitions. [2024-05-12 12:37:53,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 222 transitions, 2809 flow [2024-05-12 12:37:53,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-05-12 12:37:53,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-05-12 12:37:53,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 419 transitions. [2024-05-12 12:37:53,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5172839506172839 [2024-05-12 12:37:53,403 INFO L175 Difference]: Start difference. First operand has 94 places, 54 transitions, 593 flow. Second operand 27 states and 419 transitions. [2024-05-12 12:37:53,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 222 transitions, 2809 flow [2024-05-12 12:37:53,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 222 transitions, 2339 flow, removed 224 selfloop flow, removed 12 redundant places. [2024-05-12 12:37:53,430 INFO L231 Difference]: Finished difference. Result has 122 places, 73 transitions, 1063 flow [2024-05-12 12:37:53,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1063, PETRI_PLACES=122, PETRI_TRANSITIONS=73} [2024-05-12 12:37:53,431 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 90 predicate places. [2024-05-12 12:37:53,431 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 73 transitions, 1063 flow [2024-05-12 12:37:53,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 13 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:37:53,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:37:53,431 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:37:53,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-05-12 12:37:53,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-05-12 12:37:53,645 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:37:53,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:37:53,646 INFO L85 PathProgramCache]: Analyzing trace with hash -746903595, now seen corresponding path program 1 times [2024-05-12 12:37:53,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:37:53,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684161103] [2024-05-12 12:37:53,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:37:53,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:37:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:37:53,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:37:53,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:37:53,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684161103] [2024-05-12 12:37:53,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684161103] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:37:53,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049196171] [2024-05-12 12:37:53,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:37:53,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:37:53,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:37:53,772 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 12:37:53,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-05-12 12:37:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:37:53,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2024-05-12 12:37:53,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:37:53,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:37:53,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:37:53,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:37:53,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049196171] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:37:53,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 12:37:53,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-05-12 12:37:53,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606376295] [2024-05-12 12:37:53,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 12:37:53,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-05-12 12:37:53,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:37:53,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-05-12 12:37:53,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-05-12 12:37:54,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-05-12 12:37:54,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 73 transitions, 1063 flow. Second operand has 15 states, 15 states have (on average 10.466666666666667) internal successors, (157), 15 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:37:54,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:37:54,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-05-12 12:37:54,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:37:54,581 INFO L124 PetriNetUnfolderBase]: 1198/2243 cut-off events. [2024-05-12 12:37:54,581 INFO L125 PetriNetUnfolderBase]: For 97546/97546 co-relation queries the response was YES. [2024-05-12 12:37:54,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16115 conditions, 2243 events. 1198/2243 cut-off events. For 97546/97546 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 11910 event pairs, 206 based on Foata normal form. 63/2298 useless extension candidates. Maximal degree in co-relation 16051. Up to 616 conditions per place. [2024-05-12 12:37:54,604 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 101 selfloop transitions, 51 changer transitions 67/223 dead transitions. [2024-05-12 12:37:54,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 223 transitions, 3717 flow [2024-05-12 12:37:54,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-05-12 12:37:54,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-05-12 12:37:54,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 387 transitions. [2024-05-12 12:37:54,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516 [2024-05-12 12:37:54,608 INFO L175 Difference]: Start difference. First operand has 122 places, 73 transitions, 1063 flow. Second operand 25 states and 387 transitions. [2024-05-12 12:37:54,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 223 transitions, 3717 flow [2024-05-12 12:37:54,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 223 transitions, 3168 flow, removed 267 selfloop flow, removed 10 redundant places. [2024-05-12 12:37:54,678 INFO L231 Difference]: Finished difference. Result has 143 places, 84 transitions, 1388 flow [2024-05-12 12:37:54,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1388, PETRI_PLACES=143, PETRI_TRANSITIONS=84} [2024-05-12 12:37:54,679 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 111 predicate places. [2024-05-12 12:37:54,679 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 84 transitions, 1388 flow [2024-05-12 12:37:54,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.466666666666667) internal successors, (157), 15 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:37:54,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:37:54,680 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:37:54,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-05-12 12:37:54,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:37:54,891 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:37:54,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:37:54,891 INFO L85 PathProgramCache]: Analyzing trace with hash -407460333, now seen corresponding path program 2 times [2024-05-12 12:37:54,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:37:54,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273220877] [2024-05-12 12:37:54,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:37:54,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:37:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:37:54,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:37:54,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:37:54,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273220877] [2024-05-12 12:37:54,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273220877] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:37:54,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489778750] [2024-05-12 12:37:54,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-05-12 12:37:54,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:37:54,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:37:54,973 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 12:37:54,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-05-12 12:37:55,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-05-12 12:37:55,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 12:37:55,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2024-05-12 12:37:55,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:37:55,074 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:37:55,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:37:55,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:37:55,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489778750] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:37:55,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 12:37:55,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-05-12 12:37:55,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656383573] [2024-05-12 12:37:55,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 12:37:55,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-05-12 12:37:55,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:37:55,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-05-12 12:37:55,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-05-12 12:37:55,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-05-12 12:37:55,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 84 transitions, 1388 flow. Second operand has 15 states, 15 states have (on average 10.533333333333333) internal successors, (158), 15 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:37:55,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:37:55,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-05-12 12:37:55,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:37:56,048 INFO L124 PetriNetUnfolderBase]: 1477/2785 cut-off events. [2024-05-12 12:37:56,048 INFO L125 PetriNetUnfolderBase]: For 181693/181693 co-relation queries the response was YES. [2024-05-12 12:37:56,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22400 conditions, 2785 events. 1477/2785 cut-off events. For 181693/181693 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 15235 event pairs, 58 based on Foata normal form. 171/2952 useless extension candidates. Maximal degree in co-relation 22329. Up to 643 conditions per place. [2024-05-12 12:37:56,075 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 95 selfloop transitions, 78 changer transitions 102/279 dead transitions. [2024-05-12 12:37:56,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 279 transitions, 5352 flow [2024-05-12 12:37:56,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-05-12 12:37:56,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-05-12 12:37:56,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 463 transitions. [2024-05-12 12:37:56,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5144444444444445 [2024-05-12 12:37:56,077 INFO L175 Difference]: Start difference. First operand has 143 places, 84 transitions, 1388 flow. Second operand 30 states and 463 transitions. [2024-05-12 12:37:56,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 279 transitions, 5352 flow [2024-05-12 12:37:56,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 279 transitions, 4597 flow, removed 344 selfloop flow, removed 18 redundant places. [2024-05-12 12:37:56,192 INFO L231 Difference]: Finished difference. Result has 166 places, 105 transitions, 2043 flow [2024-05-12 12:37:56,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2043, PETRI_PLACES=166, PETRI_TRANSITIONS=105} [2024-05-12 12:37:56,193 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 134 predicate places. [2024-05-12 12:37:56,193 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 105 transitions, 2043 flow [2024-05-12 12:37:56,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.533333333333333) internal successors, (158), 15 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:37:56,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:37:56,194 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:37:56,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-05-12 12:37:56,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:37:56,405 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:37:56,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:37:56,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1088923601, now seen corresponding path program 3 times [2024-05-12 12:37:56,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:37:56,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065587269] [2024-05-12 12:37:56,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:37:56,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:37:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:37:56,520 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:37:56,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:37:56,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065587269] [2024-05-12 12:37:56,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065587269] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:37:56,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937657567] [2024-05-12 12:37:56,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-05-12 12:37:56,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:37:56,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:37:56,522 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 12:37:56,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-05-12 12:37:56,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-05-12 12:37:56,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 12:37:56,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-05-12 12:37:56,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:37:56,651 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:37:56,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:37:56,817 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:37:56,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937657567] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:37:56,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 12:37:56,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2024-05-12 12:37:56,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192593281] [2024-05-12 12:37:56,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 12:37:56,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-05-12 12:37:56,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:37:56,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-05-12 12:37:56,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2024-05-12 12:37:56,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-05-12 12:37:56,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 105 transitions, 2043 flow. Second operand has 23 states, 23 states have (on average 10.347826086956522) internal successors, (238), 23 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:37:56,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:37:56,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-05-12 12:37:56,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:37:58,298 INFO L124 PetriNetUnfolderBase]: 2107/3862 cut-off events. [2024-05-12 12:37:58,299 INFO L125 PetriNetUnfolderBase]: For 358104/358104 co-relation queries the response was YES. [2024-05-12 12:37:58,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35916 conditions, 3862 events. 2107/3862 cut-off events. For 358104/358104 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 19803 event pairs, 56 based on Foata normal form. 144/4002 useless extension candidates. Maximal degree in co-relation 35835. Up to 889 conditions per place. [2024-05-12 12:37:58,335 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 145 selfloop transitions, 112 changer transitions 135/396 dead transitions. [2024-05-12 12:37:58,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 396 transitions, 8547 flow [2024-05-12 12:37:58,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-05-12 12:37:58,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-05-12 12:37:58,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 707 transitions. [2024-05-12 12:37:58,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5123188405797101 [2024-05-12 12:37:58,337 INFO L175 Difference]: Start difference. First operand has 166 places, 105 transitions, 2043 flow. Second operand 46 states and 707 transitions. [2024-05-12 12:37:58,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 396 transitions, 8547 flow [2024-05-12 12:37:58,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 396 transitions, 7254 flow, removed 614 selfloop flow, removed 21 redundant places. [2024-05-12 12:37:58,544 INFO L231 Difference]: Finished difference. Result has 210 places, 139 transitions, 3154 flow [2024-05-12 12:37:58,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1548, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=3154, PETRI_PLACES=210, PETRI_TRANSITIONS=139} [2024-05-12 12:37:58,545 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 178 predicate places. [2024-05-12 12:37:58,545 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 139 transitions, 3154 flow [2024-05-12 12:37:58,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.347826086956522) internal successors, (238), 23 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:37:58,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:37:58,546 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:37:58,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-05-12 12:37:58,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-05-12 12:37:58,758 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:37:58,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:37:58,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1426508838, now seen corresponding path program 4 times [2024-05-12 12:37:58,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:37:58,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352080400] [2024-05-12 12:37:58,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:37:58,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:37:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:37:59,084 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:37:59,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:37:59,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352080400] [2024-05-12 12:37:59,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352080400] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:37:59,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545729643] [2024-05-12 12:37:59,085 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-05-12 12:37:59,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:37:59,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:37:59,086 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 12:37:59,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-05-12 12:37:59,147 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-05-12 12:37:59,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 12:37:59,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 20 conjunts are in the unsatisfiable core [2024-05-12 12:37:59,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:37:59,333 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:37:59,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:37:59,565 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:37:59,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545729643] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:37:59,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 12:37:59,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 26 [2024-05-12 12:37:59,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697152405] [2024-05-12 12:37:59,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 12:37:59,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-05-12 12:37:59,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:37:59,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-05-12 12:37:59,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2024-05-12 12:37:59,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-05-12 12:37:59,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 139 transitions, 3154 flow. Second operand has 27 states, 27 states have (on average 10.444444444444445) internal successors, (282), 27 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:37:59,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:37:59,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-05-12 12:37:59,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:38:01,192 INFO L124 PetriNetUnfolderBase]: 2413/4622 cut-off events. [2024-05-12 12:38:01,193 INFO L125 PetriNetUnfolderBase]: For 638529/638529 co-relation queries the response was YES. [2024-05-12 12:38:01,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48807 conditions, 4622 events. 2413/4622 cut-off events. For 638529/638529 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 25534 event pairs, 556 based on Foata normal form. 126/4740 useless extension candidates. Maximal degree in co-relation 48709. Up to 1972 conditions per place. [2024-05-12 12:38:01,233 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 165 selfloop transitions, 87 changer transitions 115/371 dead transitions. [2024-05-12 12:38:01,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 371 transitions, 10128 flow [2024-05-12 12:38:01,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-05-12 12:38:01,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-05-12 12:38:01,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 567 transitions. [2024-05-12 12:38:01,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49736842105263157 [2024-05-12 12:38:01,235 INFO L175 Difference]: Start difference. First operand has 210 places, 139 transitions, 3154 flow. Second operand 38 states and 567 transitions. [2024-05-12 12:38:01,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 371 transitions, 10128 flow [2024-05-12 12:38:02,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 371 transitions, 7366 flow, removed 1340 selfloop flow, removed 30 redundant places. [2024-05-12 12:38:02,037 INFO L231 Difference]: Finished difference. Result has 226 places, 169 transitions, 3458 flow [2024-05-12 12:38:02,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2200, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3458, PETRI_PLACES=226, PETRI_TRANSITIONS=169} [2024-05-12 12:38:02,038 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 194 predicate places. [2024-05-12 12:38:02,038 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 169 transitions, 3458 flow [2024-05-12 12:38:02,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.444444444444445) internal successors, (282), 27 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:38:02,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:38:02,039 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:38:02,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-05-12 12:38:02,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:38:02,240 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:38:02,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:38:02,240 INFO L85 PathProgramCache]: Analyzing trace with hash 786835176, now seen corresponding path program 5 times [2024-05-12 12:38:02,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:38:02,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108469920] [2024-05-12 12:38:02,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:38:02,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:38:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:38:02,507 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:38:02,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:38:02,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108469920] [2024-05-12 12:38:02,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108469920] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:38:02,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742151619] [2024-05-12 12:38:02,508 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-05-12 12:38:02,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:38:02,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:38:02,513 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 12:38:02,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-05-12 12:38:02,581 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-05-12 12:38:02,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 12:38:02,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 20 conjunts are in the unsatisfiable core [2024-05-12 12:38:02,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:38:02,684 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:38:02,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:38:02,985 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:38:02,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742151619] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:38:02,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 12:38:02,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 30 [2024-05-12 12:38:02,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261702489] [2024-05-12 12:38:02,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 12:38:02,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-05-12 12:38:02,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:38:02,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-05-12 12:38:02,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2024-05-12 12:38:03,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-05-12 12:38:03,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 169 transitions, 3458 flow. Second operand has 31 states, 31 states have (on average 10.387096774193548) internal successors, (322), 31 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:38:03,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:38:03,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-05-12 12:38:03,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:38:05,017 INFO L124 PetriNetUnfolderBase]: 2881/5709 cut-off events. [2024-05-12 12:38:05,018 INFO L125 PetriNetUnfolderBase]: For 698420/698420 co-relation queries the response was YES. [2024-05-12 12:38:05,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54631 conditions, 5709 events. 2881/5709 cut-off events. For 698420/698420 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 34045 event pairs, 310 based on Foata normal form. 126/5831 useless extension candidates. Maximal degree in co-relation 54533. Up to 1405 conditions per place. [2024-05-12 12:38:05,066 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 159 selfloop transitions, 175 changer transitions 129/467 dead transitions. [2024-05-12 12:38:05,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 467 transitions, 11113 flow [2024-05-12 12:38:05,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-05-12 12:38:05,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-05-12 12:38:05,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 677 transitions. [2024-05-12 12:38:05,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014814814814815 [2024-05-12 12:38:05,069 INFO L175 Difference]: Start difference. First operand has 226 places, 169 transitions, 3458 flow. Second operand 45 states and 677 transitions. [2024-05-12 12:38:05,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 467 transitions, 11113 flow [2024-05-12 12:38:06,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 467 transitions, 9972 flow, removed 539 selfloop flow, removed 22 redundant places. [2024-05-12 12:38:06,019 INFO L231 Difference]: Finished difference. Result has 259 places, 226 transitions, 5208 flow [2024-05-12 12:38:06,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2965, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=5208, PETRI_PLACES=259, PETRI_TRANSITIONS=226} [2024-05-12 12:38:06,019 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 227 predicate places. [2024-05-12 12:38:06,019 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 226 transitions, 5208 flow [2024-05-12 12:38:06,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.387096774193548) internal successors, (322), 31 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:38:06,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:38:06,020 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:38:06,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-05-12 12:38:06,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:38:06,230 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:38:06,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:38:06,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1553519360, now seen corresponding path program 6 times [2024-05-12 12:38:06,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:38:06,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72462594] [2024-05-12 12:38:06,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:38:06,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:38:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:38:06,472 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:38:06,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:38:06,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72462594] [2024-05-12 12:38:06,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72462594] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:38:06,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215045122] [2024-05-12 12:38:06,473 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-05-12 12:38:06,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:38:06,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:38:06,474 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 12:38:06,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-05-12 12:38:06,549 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-05-12 12:38:06,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 12:38:06,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 25 conjunts are in the unsatisfiable core [2024-05-12 12:38:06,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:38:06,626 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:38:06,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:38:06,898 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:38:06,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215045122] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:38:06,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 12:38:06,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 30 [2024-05-12 12:38:06,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878212362] [2024-05-12 12:38:06,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 12:38:06,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-05-12 12:38:06,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:38:06,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-05-12 12:38:06,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2024-05-12 12:38:07,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-05-12 12:38:07,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 226 transitions, 5208 flow. Second operand has 31 states, 31 states have (on average 10.290322580645162) internal successors, (319), 31 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:38:07,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:38:07,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-05-12 12:38:07,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:38:09,363 INFO L124 PetriNetUnfolderBase]: 3394/6724 cut-off events. [2024-05-12 12:38:09,363 INFO L125 PetriNetUnfolderBase]: For 1093449/1093449 co-relation queries the response was YES. [2024-05-12 12:38:09,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72774 conditions, 6724 events. 3394/6724 cut-off events. For 1093449/1093449 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 40673 event pairs, 94 based on Foata normal form. 126/6842 useless extension candidates. Maximal degree in co-relation 72666. Up to 1663 conditions per place. [2024-05-12 12:38:09,422 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 186 selfloop transitions, 228 changer transitions 121/539 dead transitions. [2024-05-12 12:38:09,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 539 transitions, 14416 flow [2024-05-12 12:38:09,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-05-12 12:38:09,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-05-12 12:38:09,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 752 transitions. [2024-05-12 12:38:09,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115646258503401 [2024-05-12 12:38:09,426 INFO L175 Difference]: Start difference. First operand has 259 places, 226 transitions, 5208 flow. Second operand 49 states and 752 transitions. [2024-05-12 12:38:09,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 539 transitions, 14416 flow [2024-05-12 12:38:10,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 539 transitions, 12593 flow, removed 867 selfloop flow, removed 23 redundant places. [2024-05-12 12:38:10,674 INFO L231 Difference]: Finished difference. Result has 297 places, 262 transitions, 6492 flow [2024-05-12 12:38:10,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=4375, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=6492, PETRI_PLACES=297, PETRI_TRANSITIONS=262} [2024-05-12 12:38:10,674 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 265 predicate places. [2024-05-12 12:38:10,674 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 262 transitions, 6492 flow [2024-05-12 12:38:10,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.290322580645162) internal successors, (319), 31 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:38:10,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:38:10,675 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:38:10,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-05-12 12:38:10,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-05-12 12:38:10,880 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:38:10,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:38:10,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1626931787, now seen corresponding path program 7 times [2024-05-12 12:38:10,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:38:10,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107855842] [2024-05-12 12:38:10,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:38:10,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:38:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:38:11,163 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:38:11,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:38:11,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107855842] [2024-05-12 12:38:11,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107855842] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:38:11,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576406741] [2024-05-12 12:38:11,164 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-05-12 12:38:11,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:38:11,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:38:11,166 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 12:38:11,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-05-12 12:38:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:38:11,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 22 conjunts are in the unsatisfiable core [2024-05-12 12:38:11,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:38:11,310 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:38:11,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:38:11,507 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:38:11,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576406741] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:38:11,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 12:38:11,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 27 [2024-05-12 12:38:11,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013252452] [2024-05-12 12:38:11,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 12:38:11,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-05-12 12:38:11,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:38:11,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-05-12 12:38:11,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2024-05-12 12:38:11,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-05-12 12:38:11,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 262 transitions, 6492 flow. Second operand has 28 states, 28 states have (on average 10.357142857142858) internal successors, (290), 28 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:38:11,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:38:11,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-05-12 12:38:11,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:38:14,292 INFO L124 PetriNetUnfolderBase]: 3547/7023 cut-off events. [2024-05-12 12:38:14,292 INFO L125 PetriNetUnfolderBase]: For 1420028/1420028 co-relation queries the response was YES. [2024-05-12 12:38:14,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80947 conditions, 7023 events. 3547/7023 cut-off events. For 1420028/1420028 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 43057 event pairs, 58 based on Foata normal form. 162/7181 useless extension candidates. Maximal degree in co-relation 80825. Up to 1717 conditions per place. [2024-05-12 12:38:14,359 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 179 selfloop transitions, 245 changer transitions 139/567 dead transitions. [2024-05-12 12:38:14,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 567 transitions, 15834 flow [2024-05-12 12:38:14,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-05-12 12:38:14,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2024-05-12 12:38:14,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 793 transitions. [2024-05-12 12:38:14,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-05-12 12:38:14,361 INFO L175 Difference]: Start difference. First operand has 297 places, 262 transitions, 6492 flow. Second operand 52 states and 793 transitions. [2024-05-12 12:38:14,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 567 transitions, 15834 flow [2024-05-12 12:38:16,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 567 transitions, 13868 flow, removed 890 selfloop flow, removed 28 redundant places. [2024-05-12 12:38:16,244 INFO L231 Difference]: Finished difference. Result has 328 places, 275 transitions, 6997 flow [2024-05-12 12:38:16,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=5452, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=6997, PETRI_PLACES=328, PETRI_TRANSITIONS=275} [2024-05-12 12:38:16,245 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 296 predicate places. [2024-05-12 12:38:16,245 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 275 transitions, 6997 flow [2024-05-12 12:38:16,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.357142857142858) internal successors, (290), 28 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:38:16,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:38:16,246 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:38:16,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-05-12 12:38:16,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-05-12 12:38:16,451 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:38:16,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:38:16,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1289810599, now seen corresponding path program 8 times [2024-05-12 12:38:16,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:38:16,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305572595] [2024-05-12 12:38:16,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:38:16,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:38:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:38:16,789 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:38:16,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:38:16,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305572595] [2024-05-12 12:38:16,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305572595] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:38:16,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717954086] [2024-05-12 12:38:16,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-05-12 12:38:16,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:38:16,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:38:16,792 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 12:38:16,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-05-12 12:38:16,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-05-12 12:38:16,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 12:38:16,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 26 conjunts are in the unsatisfiable core [2024-05-12 12:38:16,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:38:16,951 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:38:16,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:38:17,291 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:38:17,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717954086] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:38:17,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 12:38:17,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2024-05-12 12:38:17,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758304605] [2024-05-12 12:38:17,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 12:38:17,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-05-12 12:38:17,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:38:17,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-05-12 12:38:17,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=487, Invalid=1769, Unknown=0, NotChecked=0, Total=2256 [2024-05-12 12:38:17,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-05-12 12:38:17,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 275 transitions, 6997 flow. Second operand has 48 states, 48 states have (on average 8.145833333333334) internal successors, (391), 48 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:38:17,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:38:17,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-05-12 12:38:17,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:38:19,991 INFO L124 PetriNetUnfolderBase]: 3493/6887 cut-off events. [2024-05-12 12:38:19,992 INFO L125 PetriNetUnfolderBase]: For 1409494/1409494 co-relation queries the response was YES. [2024-05-12 12:38:20,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77719 conditions, 6887 events. 3493/6887 cut-off events. For 1409494/1409494 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 41485 event pairs, 122 based on Foata normal form. 36/6919 useless extension candidates. Maximal degree in co-relation 77590. Up to 1675 conditions per place. [2024-05-12 12:38:20,069 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 203 selfloop transitions, 268 changer transitions 117/592 dead transitions. [2024-05-12 12:38:20,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 592 transitions, 16429 flow [2024-05-12 12:38:20,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-05-12 12:38:20,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2024-05-12 12:38:20,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 687 transitions. [2024-05-12 12:38:20,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403846153846154 [2024-05-12 12:38:20,072 INFO L175 Difference]: Start difference. First operand has 328 places, 275 transitions, 6997 flow. Second operand 52 states and 687 transitions. [2024-05-12 12:38:20,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 592 transitions, 16429 flow [2024-05-12 12:38:22,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 592 transitions, 14390 flow, removed 842 selfloop flow, removed 40 redundant places. [2024-05-12 12:38:22,126 INFO L231 Difference]: Finished difference. Result has 344 places, 308 transitions, 7754 flow [2024-05-12 12:38:22,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=5842, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=7754, PETRI_PLACES=344, PETRI_TRANSITIONS=308} [2024-05-12 12:38:22,126 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 312 predicate places. [2024-05-12 12:38:22,127 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 308 transitions, 7754 flow [2024-05-12 12:38:22,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 8.145833333333334) internal successors, (391), 48 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:38:22,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:38:22,127 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:38:22,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-05-12 12:38:22,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-05-12 12:38:22,328 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:38:22,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:38:22,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1002960444, now seen corresponding path program 9 times [2024-05-12 12:38:22,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:38:22,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594603073] [2024-05-12 12:38:22,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:38:22,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:38:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:38:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 250 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-05-12 12:38:22,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:38:22,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594603073] [2024-05-12 12:38:22,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594603073] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:38:22,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640171223] [2024-05-12 12:38:22,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-05-12 12:38:22,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:38:22,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:38:22,481 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 12:38:22,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-05-12 12:38:22,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-05-12 12:38:22,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 12:38:22,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 12 conjunts are in the unsatisfiable core [2024-05-12 12:38:22,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:38:22,629 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-05-12 12:38:22,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-05-12 12:38:22,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640171223] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:38:22,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-05-12 12:38:22,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 14 [2024-05-12 12:38:22,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168665703] [2024-05-12 12:38:22,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:38:22,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:38:22,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:38:22,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:38:22,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2024-05-12 12:38:22,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2024-05-12 12:38:22,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 308 transitions, 7754 flow. Second operand has 13 states, 13 states have (on average 16.076923076923077) internal successors, (209), 13 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:38:22,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:38:22,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2024-05-12 12:38:22,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:38:28,097 INFO L124 PetriNetUnfolderBase]: 11596/23091 cut-off events. [2024-05-12 12:38:28,097 INFO L125 PetriNetUnfolderBase]: For 3686857/3692289 co-relation queries the response was YES. [2024-05-12 12:38:28,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199364 conditions, 23091 events. 11596/23091 cut-off events. For 3686857/3692289 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 196752 event pairs, 704 based on Foata normal form. 256/20627 useless extension candidates. Maximal degree in co-relation 199243. Up to 4743 conditions per place. [2024-05-12 12:38:28,499 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 0 selfloop transitions, 0 changer transitions 395/395 dead transitions. [2024-05-12 12:38:28,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 395 transitions, 7385 flow [2024-05-12 12:38:28,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-05-12 12:38:28,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-05-12 12:38:28,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 290 transitions. [2024-05-12 12:38:28,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7435897435897436 [2024-05-12 12:38:28,503 INFO L175 Difference]: Start difference. First operand has 344 places, 308 transitions, 7754 flow. Second operand 13 states and 290 transitions. [2024-05-12 12:38:28,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 395 transitions, 7385 flow [2024-05-12 12:38:33,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 395 transitions, 6152 flow, removed 353 selfloop flow, removed 50 redundant places. [2024-05-12 12:38:33,076 INFO L231 Difference]: Finished difference. Result has 299 places, 0 transitions, 0 flow [2024-05-12 12:38:33,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=5680, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=299, PETRI_TRANSITIONS=0} [2024-05-12 12:38:33,077 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 267 predicate places. [2024-05-12 12:38:33,077 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 0 transitions, 0 flow [2024-05-12 12:38:33,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 16.076923076923077) internal successors, (209), 13 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:38:33,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 5 remaining) [2024-05-12 12:38:33,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 5 remaining) [2024-05-12 12:38:33,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-05-12 12:38:33,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-05-12 12:38:33,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-05-12 12:38:33,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-05-12 12:38:33,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:38:33,292 INFO L445 BasicCegarLoop]: Path program histogram: [9, 2, 2, 2, 1, 1, 1, 1] [2024-05-12 12:38:33,294 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-05-12 12:38:33,294 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-05-12 12:38:33,297 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-05-12 12:38:33,297 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-05-12 12:38:33,298 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.05 12:38:33 BasicIcfg [2024-05-12 12:38:33,298 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-05-12 12:38:33,298 INFO L158 Benchmark]: Toolchain (without parser) took 45811.36ms. Allocated memory was 207.6MB in the beginning and 7.4GB in the end (delta: 7.2GB). Free memory was 147.9MB in the beginning and 6.0GB in the end (delta: -5.8GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2024-05-12 12:38:33,298 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 142.6MB. Free memory is still 114.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:38:33,298 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 207.6MB. Free memory was 150.9MB in the beginning and 150.6MB in the end (delta: 293.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:38:33,298 INFO L158 Benchmark]: CACSL2BoogieTranslator took 406.70ms. Allocated memory is still 207.6MB. Free memory was 147.6MB in the beginning and 123.3MB in the end (delta: 24.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-05-12 12:38:33,299 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.08ms. Allocated memory is still 207.6MB. Free memory was 123.0MB in the beginning and 121.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 12:38:33,299 INFO L158 Benchmark]: Boogie Preprocessor took 55.94ms. Allocated memory is still 207.6MB. Free memory was 121.2MB in the beginning and 118.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 12:38:33,299 INFO L158 Benchmark]: RCFGBuilder took 441.94ms. Allocated memory is still 207.6MB. Free memory was 118.8MB in the beginning and 163.7MB in the end (delta: -44.9MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. [2024-05-12 12:38:33,299 INFO L158 Benchmark]: TraceAbstraction took 44851.17ms. Allocated memory was 207.6MB in the beginning and 7.4GB in the end (delta: 7.2GB). Free memory was 162.8MB in the beginning and 6.0GB in the end (delta: -5.8GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2024-05-12 12:38:33,300 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 142.6MB. Free memory is still 114.9MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 207.6MB. Free memory was 150.9MB in the beginning and 150.6MB in the end (delta: 293.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 406.70ms. Allocated memory is still 207.6MB. Free memory was 147.6MB in the beginning and 123.3MB in the end (delta: 24.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.08ms. Allocated memory is still 207.6MB. Free memory was 123.0MB in the beginning and 121.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.94ms. Allocated memory is still 207.6MB. Free memory was 121.2MB in the beginning and 118.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 441.94ms. Allocated memory is still 207.6MB. Free memory was 118.8MB in the beginning and 163.7MB in the end (delta: -44.9MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. * TraceAbstraction took 44851.17ms. Allocated memory was 207.6MB in the beginning and 7.4GB in the end (delta: 7.2GB). Free memory was 162.8MB in the beginning and 6.0GB in the end (delta: -5.8GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 714]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 715]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 722]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 40 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 44.8s, OverallIterations: 19, TraceHistogramMax: 11, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 35.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6331 SdHoareTripleChecker+Valid, 5.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6175 mSDsluCounter, 326 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 286 mSDsCounter, 322 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9850 IncrementalHoareTripleChecker+Invalid, 10172 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 322 mSolverCounterUnsat, 40 mSDtfsCounter, 9850 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1454 GetRequests, 822 SyntacticMatches, 16 SemanticMatches, 616 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10099 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7754occurred in iteration=18, InterpolantAutomatonStates: 454, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 1122 NumberOfCodeBlocks, 1122 NumberOfCodeBlocksAsserted, 61 NumberOfCheckSat, 1512 ConstructedInterpolants, 0 QuantifiedInterpolants, 6173 SizeOfPredicates, 110 NumberOfNonLiveVariables, 1804 ConjunctsInSsa, 177 ConjunctsInUnsatCore, 40 InterpolantComputations, 9 PerfectInterpolantSequences, 534/2932 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-05-12 12:38:33,320 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