./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix053_tso.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/mix053_tso.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/mix053_tso.oepc.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix053_tso.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 17:39:28,075 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:39:28,129 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:39:28,132 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:39:28,132 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:39:28,165 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:39:28,165 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:39:28,166 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:39:28,167 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:39:28,170 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:39:28,170 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:39:28,170 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:39:28,171 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:39:28,172 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:39:28,172 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:39:28,172 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:39:28,173 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:39:28,173 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:39:28,173 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:39:28,173 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:39:28,173 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:39:28,174 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:39:28,174 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:39:28,174 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:39:28,174 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:39:28,175 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:39:28,175 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:39:28,175 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:39:28,175 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:39:28,176 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:39:28,176 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:39:28,177 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:39:28,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:39:28,177 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:39:28,177 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:39:28,177 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:39:28,178 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:39:28,178 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:39:28,178 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:39:28,178 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:39:28,178 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:39:28,179 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:39:28,179 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:39:28,179 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:39:28,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:39:28,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:39:28,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:39:28,441 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:39:28,442 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:39:28,443 INFO L431 ainManager$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/mix053_tso.oepc.yml/witness.yml [2024-01-31 17:39:29,005 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:39:29,005 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:39:29,006 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix053_tso.oepc.i [2024-01-31 17:39:30,226 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:39:30,440 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:39:30,441 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix053_tso.oepc.i [2024-01-31 17:39:30,461 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ce8aafc5/2c64445939074dddb8d375ca7cb27125/FLAGc113a1ee8 [2024-01-31 17:39:30,473 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ce8aafc5/2c64445939074dddb8d375ca7cb27125 [2024-01-31 17:39:30,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:39:30,474 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:39:30,475 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:39:30,475 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:39:30,479 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:39:30,480 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:39:29" (1/2) ... [2024-01-31 17:39:30,480 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74561544 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:39:30, skipping insertion in model container [2024-01-31 17:39:30,480 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:39:29" (1/2) ... [2024-01-31 17:39:30,481 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@143542af and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:39:30, skipping insertion in model container [2024-01-31 17:39:30,482 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:39:30" (2/2) ... [2024-01-31 17:39:30,482 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74561544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:39:30, skipping insertion in model container [2024-01-31 17:39:30,482 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:39:30" (2/2) ... [2024-01-31 17:39:30,482 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:39:32,501 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:39:32,504 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 17:39:32,505 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-31 17:39:32,574 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:39:32,818 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/mix053_tso.oepc.i[949,962] [2024-01-31 17:39:32,991 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:39:32,999 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:39:33,014 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/mix053_tso.oepc.i[949,962] Start Parsing Local [2024-01-31 17:39:33,033 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry [2024-01-31 17:39:33,064 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:39:33,099 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:39:33,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:39:33 WrapperNode [2024-01-31 17:39:33,102 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:39:33,103 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:39:33,103 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:39:33,103 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:39:33,109 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:39:33" (1/1) ... [2024-01-31 17:39:33,135 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:39:33" (1/1) ... [2024-01-31 17:39:33,175 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 161 [2024-01-31 17:39:33,177 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:39:33,178 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:39:33,178 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:39:33,178 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:39:33,187 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:39:33" (1/1) ... [2024-01-31 17:39:33,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:39:33" (1/1) ... [2024-01-31 17:39:33,199 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:39:33" (1/1) ... [2024-01-31 17:39:33,217 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 17:39:33,223 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:39:33" (1/1) ... [2024-01-31 17:39:33,223 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:39:33" (1/1) ... [2024-01-31 17:39:33,231 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:39:33" (1/1) ... [2024-01-31 17:39:33,240 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:39:33" (1/1) ... [2024-01-31 17:39:33,242 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:39:33" (1/1) ... [2024-01-31 17:39:33,247 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:39:33" (1/1) ... [2024-01-31 17:39:33,249 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:39:33,250 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:39:33,253 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:39:33,254 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:39:33,254 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:39:33" (1/1) ... [2024-01-31 17:39:33,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:39:33,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:39:33,279 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 17:39:33,281 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 17:39:33,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:39:33,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:39:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:39:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:39:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:39:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:39:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:39:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:39:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:39:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 17:39:33,322 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 17:39:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 17:39:33,322 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 17:39:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-31 17:39:33,322 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-31 17:39:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-31 17:39:33,322 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-31 17:39:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:39:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:39:33,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:39:33,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:39:33,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:39:33,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:39:33,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:39:33,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:39:33,325 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 17:39:33,462 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:39:33,464 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:39:33,683 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:39:33,683 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:39:33,808 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:39:33,809 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 17:39:33,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:39:33 BoogieIcfgContainer [2024-01-31 17:39:33,809 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:39:33,810 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:39:33,811 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:39:33,813 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:39:33,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:39:29" (1/4) ... [2024-01-31 17:39:33,813 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15cdff02 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:39:33, skipping insertion in model container [2024-01-31 17:39:33,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:39:30" (2/4) ... [2024-01-31 17:39:33,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15cdff02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:39:33, skipping insertion in model container [2024-01-31 17:39:33,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:39:33" (3/4) ... [2024-01-31 17:39:33,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15cdff02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:39:33, skipping insertion in model container [2024-01-31 17:39:33,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:39:33" (4/4) ... [2024-01-31 17:39:33,815 INFO L112 eAbstractionObserver]: Analyzing ICFG mix053_tso.oepc.i [2024-01-31 17:39:33,827 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:39:33,828 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-01-31 17:39:33,828 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:39:33,859 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 17:39:33,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 51 transitions, 118 flow [2024-01-31 17:39:33,901 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2024-01-31 17:39:33,901 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:39:33,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 1/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 94 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2024-01-31 17:39:33,904 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 51 transitions, 118 flow [2024-01-31 17:39:33,907 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 47 transitions, 106 flow [2024-01-31 17:39:33,914 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:39:33,919 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;@144f72b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:39:33,919 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-01-31 17:39:33,924 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:39:33,924 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2024-01-31 17:39:33,925 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:39:33,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:33,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:39:33,926 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P2Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:39:33,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:33,929 INFO L85 PathProgramCache]: Analyzing trace with hash 112554465, now seen corresponding path program 1 times [2024-01-31 17:39:33,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:33,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105790844] [2024-01-31 17:39:33,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:33,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:34,067 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 17:39:34,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:34,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105790844] [2024-01-31 17:39:34,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105790844] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:34,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:34,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:39:34,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7224236] [2024-01-31 17:39:34,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:34,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-31 17:39:34,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:34,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-31 17:39:34,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-31 17:39:34,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 51 [2024-01-31 17:39:34,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 106 flow. Second operand has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 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 17:39:34,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:34,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 51 [2024-01-31 17:39:34,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:34,496 INFO L124 PetriNetUnfolderBase]: 1704/3102 cut-off events. [2024-01-31 17:39:34,497 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:39:34,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5597 conditions, 3102 events. 1704/3102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 24120 event pairs, 1704 based on Foata normal form. 90/2785 useless extension candidates. Maximal degree in co-relation 5585. Up to 2412 conditions per place. [2024-01-31 17:39:34,523 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 23 selfloop transitions, 0 changer transitions 0/45 dead transitions. [2024-01-31 17:39:34,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 45 transitions, 148 flow [2024-01-31 17:39:34,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-31 17:39:34,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-31 17:39:34,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 77 transitions. [2024-01-31 17:39:34,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7549019607843137 [2024-01-31 17:39:34,533 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 106 flow. Second operand 2 states and 77 transitions. [2024-01-31 17:39:34,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 45 transitions, 148 flow [2024-01-31 17:39:34,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 45 transitions, 144 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 17:39:34,542 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 98 flow [2024-01-31 17:39:34,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2024-01-31 17:39:34,547 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2024-01-31 17:39:34,547 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 98 flow [2024-01-31 17:39:34,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 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 17:39:34,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:34,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:39:34,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:39:34,549 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err1ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P2Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:39:34,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:34,550 INFO L85 PathProgramCache]: Analyzing trace with hash 112554466, now seen corresponding path program 1 times [2024-01-31 17:39:34,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:34,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171877634] [2024-01-31 17:39:34,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:34,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:34,752 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 17:39:34,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:34,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171877634] [2024-01-31 17:39:34,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171877634] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:34,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:34,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:39:34,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863749675] [2024-01-31 17:39:34,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:34,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:39:34,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:34,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:39:34,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:39:34,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 51 [2024-01-31 17:39:34,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:39:34,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:34,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 51 [2024-01-31 17:39:34,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:34,996 INFO L124 PetriNetUnfolderBase]: 1339/2335 cut-off events. [2024-01-31 17:39:34,998 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:39:35,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4312 conditions, 2335 events. 1339/2335 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 16800 event pairs, 244 based on Foata normal form. 0/2264 useless extension candidates. Maximal degree in co-relation 4309. Up to 1510 conditions per place. [2024-01-31 17:39:35,009 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 31 selfloop transitions, 2 changer transitions 2/57 dead transitions. [2024-01-31 17:39:35,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 57 transitions, 194 flow [2024-01-31 17:39:35,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:39:35,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:39:35,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-01-31 17:39:35,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7450980392156863 [2024-01-31 17:39:35,012 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 98 flow. Second operand 3 states and 114 transitions. [2024-01-31 17:39:35,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 57 transitions, 194 flow [2024-01-31 17:39:35,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 57 transitions, 194 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:39:35,014 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 98 flow [2024-01-31 17:39:35,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=56, PETRI_TRANSITIONS=43} [2024-01-31 17:39:35,014 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2024-01-31 17:39:35,014 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 98 flow [2024-01-31 17:39:35,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:39:35,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:35,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:39:35,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:39:35,015 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P2Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:39:35,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:35,016 INFO L85 PathProgramCache]: Analyzing trace with hash -264018364, now seen corresponding path program 1 times [2024-01-31 17:39:35,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:35,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375626352] [2024-01-31 17:39:35,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:35,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:35,059 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 17:39:35,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:35,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375626352] [2024-01-31 17:39:35,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375626352] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:35,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:35,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:39:35,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590787552] [2024-01-31 17:39:35,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:35,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:39:35,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:35,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:39:35,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:39:35,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-01-31 17:39:35,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 17:39:35,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:35,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-01-31 17:39:35,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:35,291 INFO L124 PetriNetUnfolderBase]: 1711/2695 cut-off events. [2024-01-31 17:39:35,291 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2024-01-31 17:39:35,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5364 conditions, 2695 events. 1711/2695 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 18677 event pairs, 1339 based on Foata normal form. 0/2546 useless extension candidates. Maximal degree in co-relation 5360. Up to 1909 conditions per place. [2024-01-31 17:39:35,307 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 30 selfloop transitions, 1 changer transitions 1/50 dead transitions. [2024-01-31 17:39:35,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 178 flow [2024-01-31 17:39:35,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:39:35,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:39:35,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-01-31 17:39:35,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2024-01-31 17:39:35,309 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 99 transitions. [2024-01-31 17:39:35,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 178 flow [2024-01-31 17:39:35,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 50 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:39:35,311 INFO L231 Difference]: Finished difference. Result has 54 places, 41 transitions, 92 flow [2024-01-31 17:39:35,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=54, PETRI_TRANSITIONS=41} [2024-01-31 17:39:35,311 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -5 predicate places. [2024-01-31 17:39:35,311 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 41 transitions, 92 flow [2024-01-31 17:39:35,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 17:39:35,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:35,312 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 17:39:35,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:39:35,312 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P2Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:39:35,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:35,313 INFO L85 PathProgramCache]: Analyzing trace with hash 405365710, now seen corresponding path program 1 times [2024-01-31 17:39:35,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:35,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133075300] [2024-01-31 17:39:35,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:35,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:35,537 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 17:39:35,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:35,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133075300] [2024-01-31 17:39:35,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133075300] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:35,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:35,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:39:35,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634280422] [2024-01-31 17:39:35,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:35,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:39:35,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:35,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:39:35,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:39:35,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 51 [2024-01-31 17:39:35,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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 17:39:35,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:35,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 51 [2024-01-31 17:39:35,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:36,108 INFO L124 PetriNetUnfolderBase]: 3887/6112 cut-off events. [2024-01-31 17:39:36,108 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-01-31 17:39:36,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11782 conditions, 6112 events. 3887/6112 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 41085 event pairs, 1501 based on Foata normal form. 144/6205 useless extension candidates. Maximal degree in co-relation 11778. Up to 4311 conditions per place. [2024-01-31 17:39:36,134 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 38 selfloop transitions, 3 changer transitions 37/94 dead transitions. [2024-01-31 17:39:36,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 94 transitions, 360 flow [2024-01-31 17:39:36,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:39:36,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:39:36,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 220 transitions. [2024-01-31 17:39:36,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6162464985994398 [2024-01-31 17:39:36,139 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 92 flow. Second operand 7 states and 220 transitions. [2024-01-31 17:39:36,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 94 transitions, 360 flow [2024-01-31 17:39:36,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 94 transitions, 359 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:39:36,151 INFO L231 Difference]: Finished difference. Result has 63 places, 43 transitions, 126 flow [2024-01-31 17:39:36,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=126, PETRI_PLACES=63, PETRI_TRANSITIONS=43} [2024-01-31 17:39:36,153 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 4 predicate places. [2024-01-31 17:39:36,153 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 43 transitions, 126 flow [2024-01-31 17:39:36,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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 17:39:36,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:36,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:39:36,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:39:36,154 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P2Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:39:36,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:36,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1869495133, now seen corresponding path program 1 times [2024-01-31 17:39:36,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:36,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282484076] [2024-01-31 17:39:36,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:36,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:36,709 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 17:39:36,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:36,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282484076] [2024-01-31 17:39:36,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282484076] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:36,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:36,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:39:36,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167726012] [2024-01-31 17:39:36,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:36,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:39:36,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:36,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:39:36,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:39:36,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-01-31 17:39:36,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 43 transitions, 126 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 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 17:39:36,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:36,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-01-31 17:39:36,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:38,058 INFO L124 PetriNetUnfolderBase]: 7636/11397 cut-off events. [2024-01-31 17:39:38,059 INFO L125 PetriNetUnfolderBase]: For 4995/4997 co-relation queries the response was YES. [2024-01-31 17:39:38,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26415 conditions, 11397 events. 7636/11397 cut-off events. For 4995/4997 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 77263 event pairs, 2859 based on Foata normal form. 283/11658 useless extension candidates. Maximal degree in co-relation 26406. Up to 8238 conditions per place. [2024-01-31 17:39:38,117 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 45 selfloop transitions, 9 changer transitions 51/120 dead transitions. [2024-01-31 17:39:38,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 120 transitions, 547 flow [2024-01-31 17:39:38,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:39:38,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:39:38,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 286 transitions. [2024-01-31 17:39:38,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5607843137254902 [2024-01-31 17:39:38,120 INFO L175 Difference]: Start difference. First operand has 63 places, 43 transitions, 126 flow. Second operand 10 states and 286 transitions. [2024-01-31 17:39:38,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 120 transitions, 547 flow [2024-01-31 17:39:38,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 120 transitions, 533 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-01-31 17:39:38,128 INFO L231 Difference]: Finished difference. Result has 73 places, 51 transitions, 203 flow [2024-01-31 17:39:38,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=203, PETRI_PLACES=73, PETRI_TRANSITIONS=51} [2024-01-31 17:39:38,128 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 14 predicate places. [2024-01-31 17:39:38,129 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 51 transitions, 203 flow [2024-01-31 17:39:38,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 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 17:39:38,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:38,129 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 17:39:38,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:39:38,129 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P2Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:39:38,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:38,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1434084004, now seen corresponding path program 1 times [2024-01-31 17:39:38,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:38,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484374051] [2024-01-31 17:39:38,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:38,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:38,348 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 17:39:38,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:38,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484374051] [2024-01-31 17:39:38,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484374051] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:38,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:38,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:39:38,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188253058] [2024-01-31 17:39:38,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:38,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:39:38,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:38,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:39:38,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:39:38,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-01-31 17:39:38,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 51 transitions, 203 flow. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 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 17:39:38,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:38,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-01-31 17:39:38,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:39,309 INFO L124 PetriNetUnfolderBase]: 4440/7092 cut-off events. [2024-01-31 17:39:39,309 INFO L125 PetriNetUnfolderBase]: For 13284/13405 co-relation queries the response was YES. [2024-01-31 17:39:39,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21251 conditions, 7092 events. 4440/7092 cut-off events. For 13284/13405 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 49777 event pairs, 1484 based on Foata normal form. 206/7027 useless extension candidates. Maximal degree in co-relation 21236. Up to 4233 conditions per place. [2024-01-31 17:39:39,357 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 41 selfloop transitions, 13 changer transitions 43/117 dead transitions. [2024-01-31 17:39:39,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 117 transitions, 675 flow [2024-01-31 17:39:39,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:39:39,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:39:39,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 303 transitions. [2024-01-31 17:39:39,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5941176470588235 [2024-01-31 17:39:39,359 INFO L175 Difference]: Start difference. First operand has 73 places, 51 transitions, 203 flow. Second operand 10 states and 303 transitions. [2024-01-31 17:39:39,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 117 transitions, 675 flow [2024-01-31 17:39:39,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 117 transitions, 665 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-01-31 17:39:39,370 INFO L231 Difference]: Finished difference. Result has 82 places, 56 transitions, 306 flow [2024-01-31 17:39:39,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=306, PETRI_PLACES=82, PETRI_TRANSITIONS=56} [2024-01-31 17:39:39,373 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 23 predicate places. [2024-01-31 17:39:39,374 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 56 transitions, 306 flow [2024-01-31 17:39:39,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 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 17:39:39,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:39,374 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 17:39:39,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:39:39,375 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P2Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:39:39,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:39,375 INFO L85 PathProgramCache]: Analyzing trace with hash -169194390, now seen corresponding path program 1 times [2024-01-31 17:39:39,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:39,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675553405] [2024-01-31 17:39:39,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:39,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:39,781 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 17:39:39,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:39,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675553405] [2024-01-31 17:39:39,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675553405] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:39,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:39,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:39:39,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828921739] [2024-01-31 17:39:39,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:39,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:39:39,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:39,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:39:39,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:39:39,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-01-31 17:39:39,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 56 transitions, 306 flow. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 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 17:39:39,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:39,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-01-31 17:39:39,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:40,781 INFO L124 PetriNetUnfolderBase]: 4294/6817 cut-off events. [2024-01-31 17:39:40,781 INFO L125 PetriNetUnfolderBase]: For 32188/32330 co-relation queries the response was YES. [2024-01-31 17:39:40,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25944 conditions, 6817 events. 4294/6817 cut-off events. For 32188/32330 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 47277 event pairs, 1660 based on Foata normal form. 201/6711 useless extension candidates. Maximal degree in co-relation 25922. Up to 4602 conditions per place. [2024-01-31 17:39:40,825 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 48 selfloop transitions, 8 changer transitions 29/105 dead transitions. [2024-01-31 17:39:40,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 105 transitions, 731 flow [2024-01-31 17:39:40,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 17:39:40,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 17:39:40,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 245 transitions. [2024-01-31 17:39:40,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6004901960784313 [2024-01-31 17:39:40,827 INFO L175 Difference]: Start difference. First operand has 82 places, 56 transitions, 306 flow. Second operand 8 states and 245 transitions. [2024-01-31 17:39:40,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 105 transitions, 731 flow [2024-01-31 17:39:40,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 105 transitions, 641 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-01-31 17:39:40,873 INFO L231 Difference]: Finished difference. Result has 82 places, 60 transitions, 347 flow [2024-01-31 17:39:40,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=347, PETRI_PLACES=82, PETRI_TRANSITIONS=60} [2024-01-31 17:39:40,875 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 23 predicate places. [2024-01-31 17:39:40,875 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 60 transitions, 347 flow [2024-01-31 17:39:40,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 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 17:39:40,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:40,875 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] [2024-01-31 17:39:40,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 17:39:40,876 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P2Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:39:40,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:40,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1785795295, now seen corresponding path program 1 times [2024-01-31 17:39:40,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:40,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194414939] [2024-01-31 17:39:40,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:40,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:41,291 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 17:39:41,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:41,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194414939] [2024-01-31 17:39:41,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194414939] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:41,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:41,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:39:41,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313899643] [2024-01-31 17:39:41,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:41,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:39:41,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:41,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:39:41,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:39:41,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-01-31 17:39:41,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 60 transitions, 347 flow. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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 17:39:41,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:41,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-01-31 17:39:41,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:42,974 INFO L124 PetriNetUnfolderBase]: 8363/12245 cut-off events. [2024-01-31 17:39:42,975 INFO L125 PetriNetUnfolderBase]: For 41215/41223 co-relation queries the response was YES. [2024-01-31 17:39:43,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47061 conditions, 12245 events. 8363/12245 cut-off events. For 41215/41223 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 80836 event pairs, 1429 based on Foata normal form. 175/12377 useless extension candidates. Maximal degree in co-relation 47039. Up to 8084 conditions per place. [2024-01-31 17:39:43,057 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 82 selfloop transitions, 46 changer transitions 39/180 dead transitions. [2024-01-31 17:39:43,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 180 transitions, 1344 flow [2024-01-31 17:39:43,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 17:39:43,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 17:39:43,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 329 transitions. [2024-01-31 17:39:43,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5864527629233511 [2024-01-31 17:39:43,059 INFO L175 Difference]: Start difference. First operand has 82 places, 60 transitions, 347 flow. Second operand 11 states and 329 transitions. [2024-01-31 17:39:43,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 180 transitions, 1344 flow [2024-01-31 17:39:43,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 180 transitions, 1310 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-01-31 17:39:43,137 INFO L231 Difference]: Finished difference. Result has 94 places, 92 transitions, 814 flow [2024-01-31 17:39:43,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=814, PETRI_PLACES=94, PETRI_TRANSITIONS=92} [2024-01-31 17:39:43,140 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 35 predicate places. [2024-01-31 17:39:43,140 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 92 transitions, 814 flow [2024-01-31 17:39:43,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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 17:39:43,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:43,140 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] [2024-01-31 17:39:43,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 17:39:43,140 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P2Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:39:43,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:43,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1070906461, now seen corresponding path program 2 times [2024-01-31 17:39:43,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:43,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386676646] [2024-01-31 17:39:43,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:43,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:43,579 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 17:39:43,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:43,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386676646] [2024-01-31 17:39:43,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386676646] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:43,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:43,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 17:39:43,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897789315] [2024-01-31 17:39:43,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:43,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 17:39:43,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:43,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 17:39:43,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-01-31 17:39:43,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-01-31 17:39:43,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 92 transitions, 814 flow. Second operand has 8 states, 8 states have (on average 23.125) internal successors, (185), 8 states have internal predecessors, (185), 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 17:39:43,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:43,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-01-31 17:39:43,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:45,412 INFO L124 PetriNetUnfolderBase]: 7767/12087 cut-off events. [2024-01-31 17:39:45,412 INFO L125 PetriNetUnfolderBase]: For 87494/88783 co-relation queries the response was YES. [2024-01-31 17:39:45,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58068 conditions, 12087 events. 7767/12087 cut-off events. For 87494/88783 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 86519 event pairs, 1463 based on Foata normal form. 507/12329 useless extension candidates. Maximal degree in co-relation 58039. Up to 5638 conditions per place. [2024-01-31 17:39:45,525 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 60 selfloop transitions, 43 changer transitions 30/164 dead transitions. [2024-01-31 17:39:45,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 164 transitions, 1611 flow [2024-01-31 17:39:45,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:39:45,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:39:45,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 311 transitions. [2024-01-31 17:39:45,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6098039215686275 [2024-01-31 17:39:45,527 INFO L175 Difference]: Start difference. First operand has 94 places, 92 transitions, 814 flow. Second operand 10 states and 311 transitions. [2024-01-31 17:39:45,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 164 transitions, 1611 flow [2024-01-31 17:39:45,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 164 transitions, 1449 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-01-31 17:39:45,806 INFO L231 Difference]: Finished difference. Result has 98 places, 102 transitions, 948 flow [2024-01-31 17:39:45,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=948, PETRI_PLACES=98, PETRI_TRANSITIONS=102} [2024-01-31 17:39:45,806 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 39 predicate places. [2024-01-31 17:39:45,807 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 102 transitions, 948 flow [2024-01-31 17:39:45,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.125) internal successors, (185), 8 states have internal predecessors, (185), 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 17:39:45,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:45,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:39:45,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 17:39:45,807 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P2Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:39:45,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:45,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1131554065, now seen corresponding path program 1 times [2024-01-31 17:39:45,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:45,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216339044] [2024-01-31 17:39:45,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:45,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:46,288 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 17:39:46,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:46,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216339044] [2024-01-31 17:39:46,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216339044] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:46,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:46,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:39:46,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453178768] [2024-01-31 17:39:46,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:46,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:39:46,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:46,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:39:46,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:39:46,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-01-31 17:39:46,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 102 transitions, 948 flow. Second operand has 9 states, 9 states have (on average 23.0) internal successors, (207), 9 states have internal predecessors, (207), 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 17:39:46,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:46,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-01-31 17:39:46,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:48,087 INFO L124 PetriNetUnfolderBase]: 7774/12182 cut-off events. [2024-01-31 17:39:48,088 INFO L125 PetriNetUnfolderBase]: For 124494/126932 co-relation queries the response was YES. [2024-01-31 17:39:48,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62307 conditions, 12182 events. 7774/12182 cut-off events. For 124494/126932 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 88426 event pairs, 1356 based on Foata normal form. 599/12457 useless extension candidates. Maximal degree in co-relation 62276. Up to 5687 conditions per place. [2024-01-31 17:39:48,261 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 63 selfloop transitions, 49 changer transitions 25/168 dead transitions. [2024-01-31 17:39:48,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 168 transitions, 1723 flow [2024-01-31 17:39:48,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:39:48,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:39:48,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2024-01-31 17:39:48,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-01-31 17:39:48,265 INFO L175 Difference]: Start difference. First operand has 98 places, 102 transitions, 948 flow. Second operand 10 states and 306 transitions. [2024-01-31 17:39:48,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 168 transitions, 1723 flow [2024-01-31 17:39:48,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 168 transitions, 1542 flow, removed 69 selfloop flow, removed 8 redundant places. [2024-01-31 17:39:48,880 INFO L231 Difference]: Finished difference. Result has 101 places, 111 transitions, 1098 flow [2024-01-31 17:39:48,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1098, PETRI_PLACES=101, PETRI_TRANSITIONS=111} [2024-01-31 17:39:48,882 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 42 predicate places. [2024-01-31 17:39:48,882 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 111 transitions, 1098 flow [2024-01-31 17:39:48,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.0) internal successors, (207), 9 states have internal predecessors, (207), 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 17:39:48,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:48,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:39:48,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 17:39:48,887 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P2Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:39:48,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:48,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1043242223, now seen corresponding path program 2 times [2024-01-31 17:39:48,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:48,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539828204] [2024-01-31 17:39:48,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:48,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:49,407 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 17:39:49,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:49,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539828204] [2024-01-31 17:39:49,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539828204] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:49,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:49,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 17:39:49,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221552081] [2024-01-31 17:39:49,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:49,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 17:39:49,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:49,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 17:39:49,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-01-31 17:39:49,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-01-31 17:39:49,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 111 transitions, 1098 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 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 17:39:49,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:49,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-01-31 17:39:49,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:51,200 INFO L124 PetriNetUnfolderBase]: 7875/12400 cut-off events. [2024-01-31 17:39:51,200 INFO L125 PetriNetUnfolderBase]: For 119054/121547 co-relation queries the response was YES. [2024-01-31 17:39:51,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63958 conditions, 12400 events. 7875/12400 cut-off events. For 119054/121547 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 90783 event pairs, 1425 based on Foata normal form. 569/12617 useless extension candidates. Maximal degree in co-relation 63926. Up to 7012 conditions per place. [2024-01-31 17:39:51,348 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 75 selfloop transitions, 36 changer transitions 25/167 dead transitions. [2024-01-31 17:39:51,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 167 transitions, 1846 flow [2024-01-31 17:39:51,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:39:51,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:39:51,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 274 transitions. [2024-01-31 17:39:51,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5969498910675382 [2024-01-31 17:39:51,350 INFO L175 Difference]: Start difference. First operand has 101 places, 111 transitions, 1098 flow. Second operand 9 states and 274 transitions. [2024-01-31 17:39:51,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 167 transitions, 1846 flow [2024-01-31 17:39:51,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 167 transitions, 1703 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-01-31 17:39:51,990 INFO L231 Difference]: Finished difference. Result has 103 places, 115 transitions, 1187 flow [2024-01-31 17:39:51,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1187, PETRI_PLACES=103, PETRI_TRANSITIONS=115} [2024-01-31 17:39:51,991 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 44 predicate places. [2024-01-31 17:39:51,991 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 115 transitions, 1187 flow [2024-01-31 17:39:51,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 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 17:39:51,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:51,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:39:51,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 17:39:51,992 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P2Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:39:51,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:51,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1025119799, now seen corresponding path program 3 times [2024-01-31 17:39:51,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:51,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802209961] [2024-01-31 17:39:51,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:51,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:52,553 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 17:39:52,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:52,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802209961] [2024-01-31 17:39:52,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802209961] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:52,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:52,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:39:52,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918556178] [2024-01-31 17:39:52,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:52,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:39:52,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:52,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:39:52,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:39:52,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-01-31 17:39:52,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 115 transitions, 1187 flow. Second operand has 9 states, 9 states have (on average 23.0) internal successors, (207), 9 states have internal predecessors, (207), 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 17:39:52,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:52,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-01-31 17:39:52,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:54,325 INFO L124 PetriNetUnfolderBase]: 8030/12668 cut-off events. [2024-01-31 17:39:54,325 INFO L125 PetriNetUnfolderBase]: For 132239/134442 co-relation queries the response was YES. [2024-01-31 17:39:54,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66750 conditions, 12668 events. 8030/12668 cut-off events. For 132239/134442 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 93345 event pairs, 1626 based on Foata normal form. 503/12845 useless extension candidates. Maximal degree in co-relation 66717. Up to 7041 conditions per place. [2024-01-31 17:39:54,465 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 80 selfloop transitions, 43 changer transitions 25/179 dead transitions. [2024-01-31 17:39:54,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 179 transitions, 2100 flow [2024-01-31 17:39:54,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:39:54,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:39:54,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 274 transitions. [2024-01-31 17:39:54,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5969498910675382 [2024-01-31 17:39:54,467 INFO L175 Difference]: Start difference. First operand has 103 places, 115 transitions, 1187 flow. Second operand 9 states and 274 transitions. [2024-01-31 17:39:54,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 179 transitions, 2100 flow [2024-01-31 17:39:54,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 179 transitions, 1943 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-01-31 17:39:54,744 INFO L231 Difference]: Finished difference. Result has 106 places, 126 transitions, 1427 flow [2024-01-31 17:39:54,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1427, PETRI_PLACES=106, PETRI_TRANSITIONS=126} [2024-01-31 17:39:54,746 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 47 predicate places. [2024-01-31 17:39:54,746 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 126 transitions, 1427 flow [2024-01-31 17:39:54,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.0) internal successors, (207), 9 states have internal predecessors, (207), 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 17:39:54,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:54,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:39:54,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 17:39:54,746 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P2Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:39:54,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:54,747 INFO L85 PathProgramCache]: Analyzing trace with hash 430608459, now seen corresponding path program 1 times [2024-01-31 17:39:54,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:54,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585827122] [2024-01-31 17:39:54,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:54,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:55,089 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 17:39:55,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:55,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585827122] [2024-01-31 17:39:55,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585827122] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:55,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:55,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:39:55,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434915014] [2024-01-31 17:39:55,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:55,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:39:55,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:55,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:39:55,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:39:55,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-01-31 17:39:55,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 126 transitions, 1427 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 17:39:55,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:55,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-01-31 17:39:55,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:58,685 INFO L124 PetriNetUnfolderBase]: 19828/29157 cut-off events. [2024-01-31 17:39:58,685 INFO L125 PetriNetUnfolderBase]: For 372645/378412 co-relation queries the response was YES. [2024-01-31 17:39:58,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150342 conditions, 29157 events. 19828/29157 cut-off events. For 372645/378412 co-relation queries the response was YES. Maximal size of possible extension queue 1458. Compared 205802 event pairs, 3167 based on Foata normal form. 2131/29967 useless extension candidates. Maximal degree in co-relation 150307. Up to 14270 conditions per place. [2024-01-31 17:39:58,982 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 194 selfloop transitions, 6 changer transitions 0/234 dead transitions. [2024-01-31 17:39:58,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 234 transitions, 3206 flow [2024-01-31 17:39:58,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:39:58,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:39:58,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2024-01-31 17:39:58,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6862745098039216 [2024-01-31 17:39:58,984 INFO L175 Difference]: Start difference. First operand has 106 places, 126 transitions, 1427 flow. Second operand 4 states and 140 transitions. [2024-01-31 17:39:58,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 234 transitions, 3206 flow [2024-01-31 17:39:59,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 234 transitions, 3092 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-01-31 17:39:59,403 INFO L231 Difference]: Finished difference. Result has 102 places, 129 transitions, 1372 flow [2024-01-31 17:39:59,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1326, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1372, PETRI_PLACES=102, PETRI_TRANSITIONS=129} [2024-01-31 17:39:59,406 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 43 predicate places. [2024-01-31 17:39:59,406 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 129 transitions, 1372 flow [2024-01-31 17:39:59,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 17:39:59,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:59,407 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 17:39:59,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-31 17:39:59,407 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P2Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:39:59,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:59,407 INFO L85 PathProgramCache]: Analyzing trace with hash -2098917068, now seen corresponding path program 1 times [2024-01-31 17:39:59,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:59,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351931237] [2024-01-31 17:39:59,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:59,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:59,831 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 17:39:59,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:59,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351931237] [2024-01-31 17:39:59,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351931237] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:59,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:59,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:39:59,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755416260] [2024-01-31 17:39:59,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:59,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:39:59,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:59,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:39:59,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:39:59,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-01-31 17:39:59,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 129 transitions, 1372 flow. Second operand has 9 states, 9 states have (on average 23.0) internal successors, (207), 9 states have internal predecessors, (207), 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 17:39:59,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:59,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-01-31 17:39:59,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:40:03,470 INFO L124 PetriNetUnfolderBase]: 18296/29008 cut-off events. [2024-01-31 17:40:03,470 INFO L125 PetriNetUnfolderBase]: For 280132/285161 co-relation queries the response was YES. [2024-01-31 17:40:03,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142044 conditions, 29008 events. 18296/29008 cut-off events. For 280132/285161 co-relation queries the response was YES. Maximal size of possible extension queue 1546. Compared 235560 event pairs, 4279 based on Foata normal form. 1071/28134 useless extension candidates. Maximal degree in co-relation 142011. Up to 9365 conditions per place. [2024-01-31 17:40:03,831 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 104 selfloop transitions, 45 changer transitions 0/185 dead transitions. [2024-01-31 17:40:03,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 185 transitions, 2219 flow [2024-01-31 17:40:03,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:40:03,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:40:03,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 273 transitions. [2024-01-31 17:40:03,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5947712418300654 [2024-01-31 17:40:03,833 INFO L175 Difference]: Start difference. First operand has 102 places, 129 transitions, 1372 flow. Second operand 9 states and 273 transitions. [2024-01-31 17:40:03,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 185 transitions, 2219 flow [2024-01-31 17:40:04,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 185 transitions, 2183 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-01-31 17:40:04,124 INFO L231 Difference]: Finished difference. Result has 114 places, 138 transitions, 1693 flow [2024-01-31 17:40:04,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1360, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1693, PETRI_PLACES=114, PETRI_TRANSITIONS=138} [2024-01-31 17:40:04,125 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 55 predicate places. [2024-01-31 17:40:04,125 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 138 transitions, 1693 flow [2024-01-31 17:40:04,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.0) internal successors, (207), 9 states have internal predecessors, (207), 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 17:40:04,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:40:04,125 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 17:40:04,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-31 17:40:04,126 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P2Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:40:04,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:40:04,126 INFO L85 PathProgramCache]: Analyzing trace with hash 355866336, now seen corresponding path program 1 times [2024-01-31 17:40:04,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:40:04,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588116216] [2024-01-31 17:40:04,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:40:04,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:40:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:40:04,239 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 17:40:04,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:40:04,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588116216] [2024-01-31 17:40:04,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588116216] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:40:04,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:40:04,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:40:04,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360308240] [2024-01-31 17:40:04,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:40:04,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:40:04,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:40:04,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:40:04,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:40:04,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-01-31 17:40:04,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 138 transitions, 1693 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 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 17:40:04,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:40:04,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-01-31 17:40:04,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:40:08,594 INFO L124 PetriNetUnfolderBase]: 22137/32983 cut-off events. [2024-01-31 17:40:08,594 INFO L125 PetriNetUnfolderBase]: For 429451/435231 co-relation queries the response was YES. [2024-01-31 17:40:08,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172880 conditions, 32983 events. 22137/32983 cut-off events. For 429451/435231 co-relation queries the response was YES. Maximal size of possible extension queue 1349. Compared 236249 event pairs, 2283 based on Foata normal form. 2051/33907 useless extension candidates. Maximal degree in co-relation 172842. Up to 13113 conditions per place. [2024-01-31 17:40:08,942 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 212 selfloop transitions, 10 changer transitions 7/263 dead transitions. [2024-01-31 17:40:08,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 263 transitions, 3861 flow [2024-01-31 17:40:08,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:40:08,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:40:08,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 179 transitions. [2024-01-31 17:40:08,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7019607843137254 [2024-01-31 17:40:08,946 INFO L175 Difference]: Start difference. First operand has 114 places, 138 transitions, 1693 flow. Second operand 5 states and 179 transitions. [2024-01-31 17:40:08,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 263 transitions, 3861 flow [2024-01-31 17:40:09,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 263 transitions, 3742 flow, removed 42 selfloop flow, removed 2 redundant places. [2024-01-31 17:40:09,446 INFO L231 Difference]: Finished difference. Result has 118 places, 127 transitions, 1413 flow [2024-01-31 17:40:09,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1413, PETRI_PLACES=118, PETRI_TRANSITIONS=127} [2024-01-31 17:40:09,474 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 59 predicate places. [2024-01-31 17:40:09,474 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 127 transitions, 1413 flow [2024-01-31 17:40:09,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 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 17:40:09,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:40:09,474 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] [2024-01-31 17:40:09,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-31 17:40:09,475 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P2Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:40:09,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:40:09,475 INFO L85 PathProgramCache]: Analyzing trace with hash 247032070, now seen corresponding path program 1 times [2024-01-31 17:40:09,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:40:09,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788611633] [2024-01-31 17:40:09,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:40:09,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:40:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:40:10,104 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 17:40:10,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:40:10,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788611633] [2024-01-31 17:40:10,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788611633] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:40:10,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:40:10,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:40:10,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518269364] [2024-01-31 17:40:10,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:40:10,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:40:10,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:40:10,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:40:10,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:40:10,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-01-31 17:40:10,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 127 transitions, 1413 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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 17:40:10,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:40:10,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-01-31 17:40:10,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:40:14,725 INFO L124 PetriNetUnfolderBase]: 24008/37991 cut-off events. [2024-01-31 17:40:14,726 INFO L125 PetriNetUnfolderBase]: For 347535/355964 co-relation queries the response was YES. [2024-01-31 17:40:14,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190317 conditions, 37991 events. 24008/37991 cut-off events. For 347535/355964 co-relation queries the response was YES. Maximal size of possible extension queue 2123. Compared 314792 event pairs, 9358 based on Foata normal form. 1334/36650 useless extension candidates. Maximal degree in co-relation 190277. Up to 15580 conditions per place. [2024-01-31 17:40:15,114 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 163 selfloop transitions, 18 changer transitions 34/244 dead transitions. [2024-01-31 17:40:15,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 244 transitions, 3338 flow [2024-01-31 17:40:15,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 17:40:15,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 17:40:15,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 246 transitions. [2024-01-31 17:40:15,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6029411764705882 [2024-01-31 17:40:15,116 INFO L175 Difference]: Start difference. First operand has 118 places, 127 transitions, 1413 flow. Second operand 8 states and 246 transitions. [2024-01-31 17:40:15,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 244 transitions, 3338 flow [2024-01-31 17:40:15,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 244 transitions, 3157 flow, removed 87 selfloop flow, removed 6 redundant places. [2024-01-31 17:40:15,970 INFO L231 Difference]: Finished difference. Result has 121 places, 133 transitions, 1499 flow [2024-01-31 17:40:15,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1358, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1499, PETRI_PLACES=121, PETRI_TRANSITIONS=133} [2024-01-31 17:40:15,971 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 62 predicate places. [2024-01-31 17:40:15,971 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 133 transitions, 1499 flow [2024-01-31 17:40:15,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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 17:40:15,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:40:15,971 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] [2024-01-31 17:40:15,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-31 17:40:15,972 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P2Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:40:15,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:40:15,972 INFO L85 PathProgramCache]: Analyzing trace with hash 2105339636, now seen corresponding path program 1 times [2024-01-31 17:40:15,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:40:15,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133779570] [2024-01-31 17:40:15,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:40:15,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:40:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:40:16,078 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 17:40:16,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:40:16,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133779570] [2024-01-31 17:40:16,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133779570] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:40:16,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:40:16,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:40:16,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415499892] [2024-01-31 17:40:16,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:40:16,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:40:16,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:40:16,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:40:16,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:40:16,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-01-31 17:40:16,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 133 transitions, 1499 flow. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 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 17:40:16,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:40:16,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-01-31 17:40:16,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:40:22,234 INFO L124 PetriNetUnfolderBase]: 27725/40669 cut-off events. [2024-01-31 17:40:22,234 INFO L125 PetriNetUnfolderBase]: For 485741/494629 co-relation queries the response was YES. [2024-01-31 17:40:22,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212946 conditions, 40669 events. 27725/40669 cut-off events. For 485741/494629 co-relation queries the response was YES. Maximal size of possible extension queue 2006. Compared 296335 event pairs, 2095 based on Foata normal form. 2556/41701 useless extension candidates. Maximal degree in co-relation 212904. Up to 14145 conditions per place. [2024-01-31 17:40:22,751 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 163 selfloop transitions, 14 changer transitions 40/253 dead transitions. [2024-01-31 17:40:22,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 253 transitions, 3469 flow [2024-01-31 17:40:22,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:40:22,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:40:22,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 216 transitions. [2024-01-31 17:40:22,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7058823529411765 [2024-01-31 17:40:22,754 INFO L175 Difference]: Start difference. First operand has 121 places, 133 transitions, 1499 flow. Second operand 6 states and 216 transitions. [2024-01-31 17:40:22,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 253 transitions, 3469 flow [2024-01-31 17:40:23,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 253 transitions, 3182 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-01-31 17:40:23,258 INFO L231 Difference]: Finished difference. Result has 122 places, 110 transitions, 1128 flow [2024-01-31 17:40:23,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1128, PETRI_PLACES=122, PETRI_TRANSITIONS=110} [2024-01-31 17:40:23,259 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 63 predicate places. [2024-01-31 17:40:23,259 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 110 transitions, 1128 flow [2024-01-31 17:40:23,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 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 17:40:23,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:40:23,259 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] [2024-01-31 17:40:23,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-31 17:40:23,259 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P2Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:40:23,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:40:23,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1156402395, now seen corresponding path program 1 times [2024-01-31 17:40:23,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:40:23,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657854750] [2024-01-31 17:40:23,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:40:23,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:40:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:40:23,402 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 17:40:23,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:40:23,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657854750] [2024-01-31 17:40:23,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657854750] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:40:23,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:40:23,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:40:23,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510086025] [2024-01-31 17:40:23,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:40:23,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:40:23,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:40:23,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:40:23,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:40:23,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-01-31 17:40:23,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 110 transitions, 1128 flow. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 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 17:40:23,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:40:23,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-01-31 17:40:23,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand