./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix036.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix036.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix036.oepc.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix036.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 17:37:46,177 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:37:46,243 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:37:46,249 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:37:46,249 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:37:46,280 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:37:46,281 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:37:46,281 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:37:46,281 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:37:46,284 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:37:46,285 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:37:46,285 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:37:46,286 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:37:46,287 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:37:46,287 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:37:46,287 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:37:46,287 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:37:46,287 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:37:46,287 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:37:46,288 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:37:46,288 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:37:46,288 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:37:46,288 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:37:46,289 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:37:46,289 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:37:46,289 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:37:46,289 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:37:46,289 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:37:46,290 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:37:46,290 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:37:46,291 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:37:46,291 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:37:46,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:37:46,291 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:37:46,291 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:37:46,292 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:37:46,292 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:37:46,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:37:46,292 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:37:46,292 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:37:46,292 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:37:46,293 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:37:46,293 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:37:46,293 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:37:46,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:37:46,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:37:46,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:37:46,579 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:37:46,579 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:37:46,580 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix036.oepc.yml/witness.yml [2024-01-31 17:37:47,130 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:37:47,131 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:37:47,132 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix036.oepc.i [2024-01-31 17:37:48,310 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:37:48,558 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:37:48,558 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix036.oepc.i [2024-01-31 17:37:48,576 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f2a8156b/6ac4edb6684d47a2b028324b783e935e/FLAG82cc8011d [2024-01-31 17:37:48,595 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f2a8156b/6ac4edb6684d47a2b028324b783e935e [2024-01-31 17:37:48,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:37:48,597 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:37:48,599 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:37:48,599 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:37:48,603 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:37:48,603 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:37:47" (1/2) ... [2024-01-31 17:37:48,606 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29605fe1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:37:48, skipping insertion in model container [2024-01-31 17:37:48,606 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:37:47" (1/2) ... [2024-01-31 17:37:48,607 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@9e0cd2e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:37:48, skipping insertion in model container [2024-01-31 17:37:48,607 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:37:48" (2/2) ... [2024-01-31 17:37:48,608 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29605fe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:37:48, skipping insertion in model container [2024-01-31 17:37:48,608 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:37:48" (2/2) ... [2024-01-31 17:37:48,608 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:37:51,009 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:37:51,011 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 17:37:51,011 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-31 17:37:51,037 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:37:51,178 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix036.oepc.i[945,958] [2024-01-31 17:37:51,341 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:37:51,358 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:37:51,367 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix036.oepc.i[945,958] Start Parsing Local [2024-01-31 17:37:51,409 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry [2024-01-31 17:37:51,519 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:37:51,561 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:37:51,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:37:51 WrapperNode [2024-01-31 17:37:51,563 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:37:51,563 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:37:51,564 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:37:51,564 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:37:51,573 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:37:51" (1/1) ... [2024-01-31 17:37:51,604 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:37:51" (1/1) ... [2024-01-31 17:37:51,647 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 148 [2024-01-31 17:37:51,648 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:37:51,649 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:37:51,649 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:37:51,649 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:37:51,679 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:37:51" (1/1) ... [2024-01-31 17:37:51,679 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:37:51" (1/1) ... [2024-01-31 17:37:51,714 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:37:51" (1/1) ... [2024-01-31 17:37:51,740 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-31 17:37:51,744 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:37:51" (1/1) ... [2024-01-31 17:37:51,744 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:37:51" (1/1) ... [2024-01-31 17:37:51,754 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:37:51" (1/1) ... [2024-01-31 17:37:51,775 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:37:51" (1/1) ... [2024-01-31 17:37:51,777 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:37:51" (1/1) ... [2024-01-31 17:37:51,778 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:37:51" (1/1) ... [2024-01-31 17:37:51,781 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:37:51,781 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:37:51,782 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:37:51,782 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:37:51,782 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:37:51" (1/1) ... [2024-01-31 17:37:51,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:37:51,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:37:51,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 17:37:51,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 17:37:51,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:37:51,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:37:51,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:37:51,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:37:51,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:37:51,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:37:51,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:37:51,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:37:51,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:37:51,878 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 17:37:51,878 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 17:37:51,878 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 17:37:51,878 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 17:37:51,878 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-31 17:37:51,878 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-31 17:37:51,878 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-31 17:37:51,879 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-31 17:37:51,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:37:51,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:37:51,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:37:51,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:37:51,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:37:51,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:37:51,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:37:51,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:37:51,881 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 17:37:52,004 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:37:52,005 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:37:52,291 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:37:52,291 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:37:52,471 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:37:52,471 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 17:37:52,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:37:52 BoogieIcfgContainer [2024-01-31 17:37:52,472 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:37:52,474 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:37:52,474 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:37:52,477 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:37:52,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:37:47" (1/4) ... [2024-01-31 17:37:52,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24daa751 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:37:52, skipping insertion in model container [2024-01-31 17:37:52,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:37:48" (2/4) ... [2024-01-31 17:37:52,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24daa751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:37:52, skipping insertion in model container [2024-01-31 17:37:52,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:37:51" (3/4) ... [2024-01-31 17:37:52,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24daa751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:37:52, skipping insertion in model container [2024-01-31 17:37:52,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:37:52" (4/4) ... [2024-01-31 17:37:52,480 INFO L112 eAbstractionObserver]: Analyzing ICFG mix036.oepc.i [2024-01-31 17:37:52,494 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:37:52,495 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-01-31 17:37:52,495 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:37:52,540 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 17:37:52,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 53 transitions, 122 flow [2024-01-31 17:37:52,606 INFO L124 PetriNetUnfolderBase]: 1/49 cut-off events. [2024-01-31 17:37:52,606 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:37:52,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 1/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 106 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-01-31 17:37:52,611 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 53 transitions, 122 flow [2024-01-31 17:37:52,615 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 49 transitions, 110 flow [2024-01-31 17:37:52,629 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:37:52,635 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;@281967e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:37:52,636 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-01-31 17:37:52,641 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:37:52,641 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-01-31 17:37:52,641 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:37:52,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:37:52,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:37:52,642 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:37:52,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:37:52,646 INFO L85 PathProgramCache]: Analyzing trace with hash 12767417, now seen corresponding path program 1 times [2024-01-31 17:37:52,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:37:52,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330314501] [2024-01-31 17:37:52,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:37:52,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:37:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:37:52,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:37:52,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:37:52,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330314501] [2024-01-31 17:37:52,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330314501] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:37:52,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:37:52,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:37:52,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586222878] [2024-01-31 17:37:52,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:37:52,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-31 17:37:52,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:37:52,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-31 17:37:52,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-31 17:37:52,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-01-31 17:37:52,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 110 flow. Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:37:52,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:37:52,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-01-31 17:37:52,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:37:53,946 INFO L124 PetriNetUnfolderBase]: 3179/5553 cut-off events. [2024-01-31 17:37:53,947 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:37:53,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10081 conditions, 5553 events. 3179/5553 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 41380 event pairs, 3179 based on Foata normal form. 135/5053 useless extension candidates. Maximal degree in co-relation 10069. Up to 4391 conditions per place. [2024-01-31 17:37:53,982 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 24 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2024-01-31 17:37:53,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 47 transitions, 154 flow [2024-01-31 17:37:53,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-31 17:37:53,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-31 17:37:53,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2024-01-31 17:37:53,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7547169811320755 [2024-01-31 17:37:53,992 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 110 flow. Second operand 2 states and 80 transitions. [2024-01-31 17:37:53,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 47 transitions, 154 flow [2024-01-31 17:37:53,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 47 transitions, 150 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 17:37:54,001 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 102 flow [2024-01-31 17:37:54,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=102, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2024-01-31 17:37:54,006 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2024-01-31 17:37:54,006 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 102 flow [2024-01-31 17:37:54,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:37:54,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:37:54,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:37:54,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:37:54,007 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:37:54,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:37:54,008 INFO L85 PathProgramCache]: Analyzing trace with hash 12767418, now seen corresponding path program 1 times [2024-01-31 17:37:54,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:37:54,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400058548] [2024-01-31 17:37:54,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:37:54,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:37:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:37:54,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:37:54,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:37:54,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400058548] [2024-01-31 17:37:54,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400058548] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:37:54,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:37:54,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:37:54,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305935783] [2024-01-31 17:37:54,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:37:54,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:37:54,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:37:54,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:37:54,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:37:54,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-01-31 17:37:54,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:37:54,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:37:54,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-01-31 17:37:54,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:37:54,967 INFO L124 PetriNetUnfolderBase]: 2495/4181 cut-off events. [2024-01-31 17:37:54,968 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:37:54,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7754 conditions, 4181 events. 2495/4181 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 29145 event pairs, 443 based on Foata normal form. 0/4080 useless extension candidates. Maximal degree in co-relation 7751. Up to 2779 conditions per place. [2024-01-31 17:37:54,993 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 37 selfloop transitions, 2 changer transitions 2/64 dead transitions. [2024-01-31 17:37:54,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 64 transitions, 224 flow [2024-01-31 17:37:54,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:37:54,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:37:54,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-01-31 17:37:54,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7735849056603774 [2024-01-31 17:37:54,999 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 102 flow. Second operand 3 states and 123 transitions. [2024-01-31 17:37:54,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 64 transitions, 224 flow [2024-01-31 17:37:55,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 224 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:37:55,005 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 102 flow [2024-01-31 17:37:55,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2024-01-31 17:37:55,006 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2024-01-31 17:37:55,007 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 102 flow [2024-01-31 17:37:55,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:37:55,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:37:55,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:37:55,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:37:55,008 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:37:55,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:37:55,008 INFO L85 PathProgramCache]: Analyzing trace with hash -728266911, now seen corresponding path program 1 times [2024-01-31 17:37:55,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:37:55,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610392010] [2024-01-31 17:37:55,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:37:55,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:37:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:37:55,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:37:55,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:37:55,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610392010] [2024-01-31 17:37:55,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610392010] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:37:55,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:37:55,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:37:55,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763773662] [2024-01-31 17:37:55,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:37:55,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:37:55,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:37:55,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:37:55,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:37:55,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 53 [2024-01-31 17:37:55,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:37:55,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:37:55,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 53 [2024-01-31 17:37:55,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:37:55,614 INFO L124 PetriNetUnfolderBase]: 3311/5247 cut-off events. [2024-01-31 17:37:55,614 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-01-31 17:37:55,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10240 conditions, 5247 events. 3311/5247 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 35290 event pairs, 2495 based on Foata normal form. 0/4968 useless extension candidates. Maximal degree in co-relation 10236. Up to 3465 conditions per place. [2024-01-31 17:37:55,647 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 33 selfloop transitions, 1 changer transitions 1/54 dead transitions. [2024-01-31 17:37:55,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 192 flow [2024-01-31 17:37:55,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:37:55,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:37:55,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-01-31 17:37:55,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.660377358490566 [2024-01-31 17:37:55,652 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 102 flow. Second operand 3 states and 105 transitions. [2024-01-31 17:37:55,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 192 flow [2024-01-31 17:37:55,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:37:55,654 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 96 flow [2024-01-31 17:37:55,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=56, PETRI_TRANSITIONS=43} [2024-01-31 17:37:55,656 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2024-01-31 17:37:55,656 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 96 flow [2024-01-31 17:37:55,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:37:55,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:37:55,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:37:55,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:37:55,657 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:37:55,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:37:55,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1101437335, now seen corresponding path program 1 times [2024-01-31 17:37:55,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:37:55,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512172468] [2024-01-31 17:37:55,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:37:55,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:37:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:37:55,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:37:55,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:37:55,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512172468] [2024-01-31 17:37:55,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512172468] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:37:55,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:37:55,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:37:55,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031736225] [2024-01-31 17:37:55,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:37:55,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:37:55,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:37:55,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:37:55,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:37:55,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 53 [2024-01-31 17:37:55,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:37:55,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:37:55,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 53 [2024-01-31 17:37:55,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:37:57,321 INFO L124 PetriNetUnfolderBase]: 12009/17329 cut-off events. [2024-01-31 17:37:57,321 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 17:37:57,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34155 conditions, 17329 events. 12009/17329 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 888. Compared 115034 event pairs, 7457 based on Foata normal form. 400/17712 useless extension candidates. Maximal degree in co-relation 34151. Up to 13301 conditions per place. [2024-01-31 17:37:57,402 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 38 selfloop transitions, 5 changer transitions 41/98 dead transitions. [2024-01-31 17:37:57,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 98 transitions, 380 flow [2024-01-31 17:37:57,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:37:57,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:37:57,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 212 transitions. [2024-01-31 17:37:57,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-01-31 17:37:57,405 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 96 flow. Second operand 7 states and 212 transitions. [2024-01-31 17:37:57,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 98 transitions, 380 flow [2024-01-31 17:37:57,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 98 transitions, 379 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:37:57,504 INFO L231 Difference]: Finished difference. Result has 65 places, 47 transitions, 152 flow [2024-01-31 17:37:57,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=152, PETRI_PLACES=65, PETRI_TRANSITIONS=47} [2024-01-31 17:37:57,505 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 4 predicate places. [2024-01-31 17:37:57,505 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 47 transitions, 152 flow [2024-01-31 17:37:57,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:37:57,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:37:57,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:37:57,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:37:57,507 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:37:57,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:37:57,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1429945137, now seen corresponding path program 1 times [2024-01-31 17:37:57,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:37:57,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459841336] [2024-01-31 17:37:57,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:37:57,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:37:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:37:57,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:37:57,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:37:57,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459841336] [2024-01-31 17:37:57,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459841336] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:37:57,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:37:57,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:37:57,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851875085] [2024-01-31 17:37:57,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:37:57,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:37:57,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:37:57,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:37:57,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:37:57,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 53 [2024-01-31 17:37:57,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 47 transitions, 152 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:37:57,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:37:57,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 53 [2024-01-31 17:37:57,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:37:59,083 INFO L124 PetriNetUnfolderBase]: 10995/15848 cut-off events. [2024-01-31 17:37:59,083 INFO L125 PetriNetUnfolderBase]: For 15634/15709 co-relation queries the response was YES. [2024-01-31 17:37:59,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43070 conditions, 15848 events. 10995/15848 cut-off events. For 15634/15709 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 101302 event pairs, 1923 based on Foata normal form. 390/16163 useless extension candidates. Maximal degree in co-relation 43061. Up to 10369 conditions per place. [2024-01-31 17:37:59,170 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 43 selfloop transitions, 3 changer transitions 51/111 dead transitions. [2024-01-31 17:37:59,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 111 transitions, 586 flow [2024-01-31 17:37:59,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:37:59,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:37:59,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 221 transitions. [2024-01-31 17:37:59,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5956873315363881 [2024-01-31 17:37:59,172 INFO L175 Difference]: Start difference. First operand has 65 places, 47 transitions, 152 flow. Second operand 7 states and 221 transitions. [2024-01-31 17:37:59,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 111 transitions, 586 flow [2024-01-31 17:37:59,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 111 transitions, 573 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-01-31 17:37:59,260 INFO L231 Difference]: Finished difference. Result has 69 places, 47 transitions, 162 flow [2024-01-31 17:37:59,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=162, PETRI_PLACES=69, PETRI_TRANSITIONS=47} [2024-01-31 17:37:59,261 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 8 predicate places. [2024-01-31 17:37:59,261 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 47 transitions, 162 flow [2024-01-31 17:37:59,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:37:59,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:37:59,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:37:59,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:37:59,262 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:37:59,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:37:59,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1645225881, now seen corresponding path program 1 times [2024-01-31 17:37:59,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:37:59,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375128702] [2024-01-31 17:37:59,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:37:59,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:37:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:37:59,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:37:59,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:37:59,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375128702] [2024-01-31 17:37:59,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375128702] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:37:59,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:37:59,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:37:59,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772987606] [2024-01-31 17:37:59,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:37:59,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:37:59,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:37:59,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:37:59,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:37:59,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:37:59,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 47 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:37:59,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:37:59,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:37:59,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:01,253 INFO L124 PetriNetUnfolderBase]: 13587/21014 cut-off events. [2024-01-31 17:38:01,253 INFO L125 PetriNetUnfolderBase]: For 9651/9822 co-relation queries the response was YES. [2024-01-31 17:38:01,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47800 conditions, 21014 events. 13587/21014 cut-off events. For 9651/9822 co-relation queries the response was YES. Maximal size of possible extension queue 1200. Compared 155651 event pairs, 2489 based on Foata normal form. 679/20816 useless extension candidates. Maximal degree in co-relation 47788. Up to 9551 conditions per place. [2024-01-31 17:38:01,497 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 53 selfloop transitions, 6 changer transitions 0/79 dead transitions. [2024-01-31 17:38:01,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 79 transitions, 350 flow [2024-01-31 17:38:01,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:38:01,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:38:01,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2024-01-31 17:38:01,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7028301886792453 [2024-01-31 17:38:01,514 INFO L175 Difference]: Start difference. First operand has 69 places, 47 transitions, 162 flow. Second operand 4 states and 149 transitions. [2024-01-31 17:38:01,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 79 transitions, 350 flow [2024-01-31 17:38:01,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 79 transitions, 336 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-01-31 17:38:01,816 INFO L231 Difference]: Finished difference. Result has 64 places, 52 transitions, 194 flow [2024-01-31 17:38:01,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=64, PETRI_TRANSITIONS=52} [2024-01-31 17:38:01,819 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2024-01-31 17:38:01,819 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 52 transitions, 194 flow [2024-01-31 17:38:01,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:01,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:01,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:38:01,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:38:01,820 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:38:01,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:01,821 INFO L85 PathProgramCache]: Analyzing trace with hash 583760489, now seen corresponding path program 1 times [2024-01-31 17:38:01,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:01,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132516127] [2024-01-31 17:38:01,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:01,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:02,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:38:02,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:02,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132516127] [2024-01-31 17:38:02,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132516127] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:02,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:02,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:38:02,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983084068] [2024-01-31 17:38:02,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:02,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:38:02,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:02,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:38:02,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:38:02,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:38:02,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:02,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:02,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:38:02,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:03,513 INFO L124 PetriNetUnfolderBase]: 11172/17137 cut-off events. [2024-01-31 17:38:03,514 INFO L125 PetriNetUnfolderBase]: For 5967/6076 co-relation queries the response was YES. [2024-01-31 17:38:03,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41367 conditions, 17137 events. 11172/17137 cut-off events. For 5967/6076 co-relation queries the response was YES. Maximal size of possible extension queue 897. Compared 119948 event pairs, 1460 based on Foata normal form. 602/17009 useless extension candidates. Maximal degree in co-relation 41357. Up to 5576 conditions per place. [2024-01-31 17:38:03,606 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 69 selfloop transitions, 10 changer transitions 0/99 dead transitions. [2024-01-31 17:38:03,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 99 transitions, 475 flow [2024-01-31 17:38:03,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:38:03,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:38:03,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 191 transitions. [2024-01-31 17:38:03,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.720754716981132 [2024-01-31 17:38:03,608 INFO L175 Difference]: Start difference. First operand has 64 places, 52 transitions, 194 flow. Second operand 5 states and 191 transitions. [2024-01-31 17:38:03,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 99 transitions, 475 flow [2024-01-31 17:38:03,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 99 transitions, 472 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:38:03,611 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 259 flow [2024-01-31 17:38:03,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=259, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2024-01-31 17:38:03,612 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 8 predicate places. [2024-01-31 17:38:03,612 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 259 flow [2024-01-31 17:38:03,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:03,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:03,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:38:03,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 17:38:03,613 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:38:03,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:03,613 INFO L85 PathProgramCache]: Analyzing trace with hash -2035070042, now seen corresponding path program 1 times [2024-01-31 17:38:03,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:03,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069406384] [2024-01-31 17:38:03,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:03,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:03,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:38:03,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:03,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069406384] [2024-01-31 17:38:03,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069406384] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:03,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:03,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 17:38:03,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962652829] [2024-01-31 17:38:03,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:03,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:38:03,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:03,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:38:03,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:38:04,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:38:04,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 259 flow. Second operand has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:04,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:04,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:38:04,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:06,422 INFO L124 PetriNetUnfolderBase]: 16169/26492 cut-off events. [2024-01-31 17:38:06,422 INFO L125 PetriNetUnfolderBase]: For 17480/21265 co-relation queries the response was YES. [2024-01-31 17:38:06,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68075 conditions, 26492 events. 16169/26492 cut-off events. For 17480/21265 co-relation queries the response was YES. Maximal size of possible extension queue 1452. Compared 218832 event pairs, 6541 based on Foata normal form. 387/24823 useless extension candidates. Maximal degree in co-relation 68063. Up to 11469 conditions per place. [2024-01-31 17:38:06,649 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 88 selfloop transitions, 18 changer transitions 12/150 dead transitions. [2024-01-31 17:38:06,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 150 transitions, 765 flow [2024-01-31 17:38:06,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:38:06,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:38:06,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 340 transitions. [2024-01-31 17:38:06,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6415094339622641 [2024-01-31 17:38:06,651 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 259 flow. Second operand 10 states and 340 transitions. [2024-01-31 17:38:06,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 150 transitions, 765 flow [2024-01-31 17:38:06,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 150 transitions, 750 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-31 17:38:06,660 INFO L231 Difference]: Finished difference. Result has 84 places, 76 transitions, 386 flow [2024-01-31 17:38:06,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=386, PETRI_PLACES=84, PETRI_TRANSITIONS=76} [2024-01-31 17:38:06,661 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 23 predicate places. [2024-01-31 17:38:06,661 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 76 transitions, 386 flow [2024-01-31 17:38:06,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:06,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:06,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:38:06,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 17:38:06,662 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:38:06,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:06,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1238014140, now seen corresponding path program 2 times [2024-01-31 17:38:06,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:06,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365499614] [2024-01-31 17:38:06,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:06,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:06,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:38:06,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:06,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365499614] [2024-01-31 17:38:06,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365499614] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:06,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:06,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:38:06,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535186993] [2024-01-31 17:38:06,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:06,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:38:06,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:06,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:38:06,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:38:06,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:38:06,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 76 transitions, 386 flow. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:06,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:06,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:38:06,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:09,624 INFO L124 PetriNetUnfolderBase]: 18969/28031 cut-off events. [2024-01-31 17:38:09,624 INFO L125 PetriNetUnfolderBase]: For 48652/50661 co-relation queries the response was YES. [2024-01-31 17:38:09,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92439 conditions, 28031 events. 18969/28031 cut-off events. For 48652/50661 co-relation queries the response was YES. Maximal size of possible extension queue 1217. Compared 189882 event pairs, 1551 based on Foata normal form. 928/28065 useless extension candidates. Maximal degree in co-relation 92419. Up to 9612 conditions per place. [2024-01-31 17:38:09,818 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 129 selfloop transitions, 14 changer transitions 12/176 dead transitions. [2024-01-31 17:38:09,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 176 transitions, 1160 flow [2024-01-31 17:38:09,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:38:09,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:38:09,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 231 transitions. [2024-01-31 17:38:09,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7264150943396226 [2024-01-31 17:38:09,820 INFO L175 Difference]: Start difference. First operand has 84 places, 76 transitions, 386 flow. Second operand 6 states and 231 transitions. [2024-01-31 17:38:09,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 176 transitions, 1160 flow [2024-01-31 17:38:09,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 176 transitions, 1154 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-31 17:38:09,870 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 445 flow [2024-01-31 17:38:09,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=445, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2024-01-31 17:38:09,871 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 26 predicate places. [2024-01-31 17:38:09,871 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 445 flow [2024-01-31 17:38:09,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:09,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:09,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:38:09,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 17:38:09,872 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:38:09,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:09,872 INFO L85 PathProgramCache]: Analyzing trace with hash 732829007, now seen corresponding path program 1 times [2024-01-31 17:38:09,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:09,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303009039] [2024-01-31 17:38:09,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:09,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:10,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:38:10,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:10,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303009039] [2024-01-31 17:38:10,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303009039] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:10,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:10,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:38:10,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997685615] [2024-01-31 17:38:10,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:10,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:38:10,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:10,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:38:10,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:38:10,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:38:10,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 445 flow. Second operand has 9 states, 9 states have (on average 24.22222222222222) internal successors, (218), 9 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:10,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:10,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:38:10,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:13,475 INFO L124 PetriNetUnfolderBase]: 14094/24322 cut-off events. [2024-01-31 17:38:13,476 INFO L125 PetriNetUnfolderBase]: For 46660/53651 co-relation queries the response was YES. [2024-01-31 17:38:13,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78337 conditions, 24322 events. 14094/24322 cut-off events. For 46660/53651 co-relation queries the response was YES. Maximal size of possible extension queue 1580. Compared 214408 event pairs, 4011 based on Foata normal form. 875/22743 useless extension candidates. Maximal degree in co-relation 78316. Up to 5722 conditions per place. [2024-01-31 17:38:13,705 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 83 selfloop transitions, 18 changer transitions 18/156 dead transitions. [2024-01-31 17:38:13,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 156 transitions, 1039 flow [2024-01-31 17:38:13,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:38:13,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:38:13,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 301 transitions. [2024-01-31 17:38:13,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6310272536687631 [2024-01-31 17:38:13,707 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 445 flow. Second operand 9 states and 301 transitions. [2024-01-31 17:38:13,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 156 transitions, 1039 flow [2024-01-31 17:38:14,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 156 transitions, 1002 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-01-31 17:38:14,048 INFO L231 Difference]: Finished difference. Result has 96 places, 86 transitions, 529 flow [2024-01-31 17:38:14,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=529, PETRI_PLACES=96, PETRI_TRANSITIONS=86} [2024-01-31 17:38:14,049 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 35 predicate places. [2024-01-31 17:38:14,049 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 86 transitions, 529 flow [2024-01-31 17:38:14,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.22222222222222) internal successors, (218), 9 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:14,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:14,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:38:14,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 17:38:14,050 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:38:14,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:14,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1916560525, now seen corresponding path program 2 times [2024-01-31 17:38:14,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:14,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423599958] [2024-01-31 17:38:14,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:14,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:14,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:38:14,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:14,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423599958] [2024-01-31 17:38:14,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423599958] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:14,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:14,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:38:14,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336013456] [2024-01-31 17:38:14,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:14,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:38:14,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:14,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:38:14,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:38:14,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:38:14,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 86 transitions, 529 flow. Second operand has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:14,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:14,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:38:14,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:17,744 INFO L124 PetriNetUnfolderBase]: 25036/36787 cut-off events. [2024-01-31 17:38:17,744 INFO L125 PetriNetUnfolderBase]: For 103618/107049 co-relation queries the response was YES. [2024-01-31 17:38:17,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133939 conditions, 36787 events. 25036/36787 cut-off events. For 103618/107049 co-relation queries the response was YES. Maximal size of possible extension queue 1735. Compared 258820 event pairs, 1988 based on Foata normal form. 698/36595 useless extension candidates. Maximal degree in co-relation 133913. Up to 13408 conditions per place. [2024-01-31 17:38:18,005 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 129 selfloop transitions, 18 changer transitions 12/179 dead transitions. [2024-01-31 17:38:18,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 179 transitions, 1381 flow [2024-01-31 17:38:18,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:38:18,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:38:18,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 249 transitions. [2024-01-31 17:38:18,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6711590296495957 [2024-01-31 17:38:18,010 INFO L175 Difference]: Start difference. First operand has 96 places, 86 transitions, 529 flow. Second operand 7 states and 249 transitions. [2024-01-31 17:38:18,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 179 transitions, 1381 flow [2024-01-31 17:38:18,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 179 transitions, 1361 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-01-31 17:38:18,609 INFO L231 Difference]: Finished difference. Result has 96 places, 81 transitions, 527 flow [2024-01-31 17:38:18,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=527, PETRI_PLACES=96, PETRI_TRANSITIONS=81} [2024-01-31 17:38:18,610 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 35 predicate places. [2024-01-31 17:38:18,610 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 81 transitions, 527 flow [2024-01-31 17:38:18,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:18,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:18,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:38:18,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 17:38:18,611 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:38:18,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:18,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1783439858, now seen corresponding path program 1 times [2024-01-31 17:38:18,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:18,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514107150] [2024-01-31 17:38:18,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:18,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:18,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:38:18,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:18,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514107150] [2024-01-31 17:38:18,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514107150] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:18,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:18,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:38:18,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364727824] [2024-01-31 17:38:18,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:18,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:38:18,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:18,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:38:18,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:38:18,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-01-31 17:38:18,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 81 transitions, 527 flow. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:18,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:18,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-01-31 17:38:18,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:22,724 INFO L124 PetriNetUnfolderBase]: 20276/34653 cut-off events. [2024-01-31 17:38:22,724 INFO L125 PetriNetUnfolderBase]: For 100330/111778 co-relation queries the response was YES. [2024-01-31 17:38:22,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119941 conditions, 34653 events. 20276/34653 cut-off events. For 100330/111778 co-relation queries the response was YES. Maximal size of possible extension queue 2702. Compared 324734 event pairs, 4914 based on Foata normal form. 499/30708 useless extension candidates. Maximal degree in co-relation 119917. Up to 12021 conditions per place. [2024-01-31 17:38:22,958 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 87 selfloop transitions, 3 changer transitions 20/145 dead transitions. [2024-01-31 17:38:22,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 145 transitions, 1102 flow [2024-01-31 17:38:22,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:38:22,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:38:22,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-01-31 17:38:22,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5817610062893082 [2024-01-31 17:38:22,960 INFO L175 Difference]: Start difference. First operand has 96 places, 81 transitions, 527 flow. Second operand 6 states and 185 transitions. [2024-01-31 17:38:22,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 145 transitions, 1102 flow [2024-01-31 17:38:24,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 145 transitions, 1011 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-01-31 17:38:24,117 INFO L231 Difference]: Finished difference. Result has 96 places, 81 transitions, 468 flow [2024-01-31 17:38:24,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=468, PETRI_PLACES=96, PETRI_TRANSITIONS=81} [2024-01-31 17:38:24,117 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 35 predicate places. [2024-01-31 17:38:24,117 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 81 transitions, 468 flow [2024-01-31 17:38:24,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:24,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:24,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:38:24,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 17:38:24,118 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:38:24,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:24,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1585232188, now seen corresponding path program 2 times [2024-01-31 17:38:24,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:24,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115374871] [2024-01-31 17:38:24,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:24,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:38:24,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:24,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115374871] [2024-01-31 17:38:24,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115374871] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:24,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:24,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 17:38:24,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36576545] [2024-01-31 17:38:24,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:24,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 17:38:24,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:24,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 17:38:24,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-01-31 17:38:24,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 53 [2024-01-31 17:38:24,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 81 transitions, 468 flow. Second operand has 10 states, 10 states have (on average 20.5) internal successors, (205), 10 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:24,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:24,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 53 [2024-01-31 17:38:24,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:28,907 INFO L124 PetriNetUnfolderBase]: 25450/42178 cut-off events. [2024-01-31 17:38:28,908 INFO L125 PetriNetUnfolderBase]: For 82173/88592 co-relation queries the response was YES. [2024-01-31 17:38:29,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133993 conditions, 42178 events. 25450/42178 cut-off events. For 82173/88592 co-relation queries the response was YES. Maximal size of possible extension queue 3276. Compared 391394 event pairs, 6070 based on Foata normal form. 614/38394 useless extension candidates. Maximal degree in co-relation 133970. Up to 16387 conditions per place. [2024-01-31 17:38:29,197 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 84 selfloop transitions, 17 changer transitions 30/161 dead transitions. [2024-01-31 17:38:29,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 161 transitions, 1036 flow [2024-01-31 17:38:29,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:38:29,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:38:29,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 291 transitions. [2024-01-31 17:38:29,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5490566037735849 [2024-01-31 17:38:29,198 INFO L175 Difference]: Start difference. First operand has 96 places, 81 transitions, 468 flow. Second operand 10 states and 291 transitions. [2024-01-31 17:38:29,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 161 transitions, 1036 flow [2024-01-31 17:38:31,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 161 transitions, 1026 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-01-31 17:38:31,533 INFO L231 Difference]: Finished difference. Result has 104 places, 83 transitions, 535 flow [2024-01-31 17:38:31,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=535, PETRI_PLACES=104, PETRI_TRANSITIONS=83} [2024-01-31 17:38:31,534 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 43 predicate places. [2024-01-31 17:38:31,534 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 83 transitions, 535 flow [2024-01-31 17:38:31,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.5) internal successors, (205), 10 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:31,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:31,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:38:31,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-31 17:38:31,535 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:38:31,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:31,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1837415478, now seen corresponding path program 3 times [2024-01-31 17:38:31,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:31,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000813471] [2024-01-31 17:38:31,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:31,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:31,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:38:31,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:31,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000813471] [2024-01-31 17:38:31,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000813471] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:31,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:31,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:38:31,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075559754] [2024-01-31 17:38:31,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:31,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:38:31,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:31,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:38:31,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:38:31,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-01-31 17:38:31,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 83 transitions, 535 flow. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:38:31,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:31,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-01-31 17:38:31,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:36,586 INFO L124 PetriNetUnfolderBase]: 27713/47800 cut-off events. [2024-01-31 17:38:36,586 INFO L125 PetriNetUnfolderBase]: For 119017/129503 co-relation queries the response was YES. [2024-01-31 17:38:36,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156613 conditions, 47800 events. 27713/47800 cut-off events. For 119017/129503 co-relation queries the response was YES. Maximal size of possible extension queue 3690. Compared 471905 event pairs, 7915 based on Foata normal form. 715/42363 useless extension candidates. Maximal degree in co-relation 156587. Up to 18530 conditions per place. [2024-01-31 17:38:36,969 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 92 selfloop transitions, 3 changer transitions 15/149 dead transitions. [2024-01-31 17:38:36,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 149 transitions, 1149 flow [2024-01-31 17:38:36,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:38:36,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:38:36,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2024-01-31 17:38:36,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5911949685534591 [2024-01-31 17:38:36,970 INFO L175 Difference]: Start difference. First operand has 104 places, 83 transitions, 535 flow. Second operand 6 states and 188 transitions. [2024-01-31 17:38:36,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 149 transitions, 1149 flow