./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix020.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/mix020.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/mix020.oepc.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix020.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 17:35:38,194 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:35:38,282 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:35:38,287 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:35:38,288 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:35:38,309 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:35:38,311 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:35:38,311 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:35:38,311 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:35:38,314 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:35:38,315 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:35:38,315 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:35:38,316 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:35:38,317 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:35:38,317 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:35:38,317 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:35:38,317 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:35:38,317 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:35:38,318 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:35:38,318 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:35:38,318 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:35:38,318 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:35:38,319 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:35:38,319 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:35:38,319 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:35:38,319 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:35:38,319 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:35:38,320 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:35:38,320 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:35:38,320 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:35:38,321 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:35:38,321 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:35:38,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:35:38,322 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:35:38,322 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:35:38,322 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:35:38,322 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:35:38,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:35:38,323 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:35:38,323 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:35:38,323 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:35:38,323 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:35:38,323 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:35:38,324 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:35:38,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:35:38,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:35:38,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:35:38,507 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:35:38,507 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:35:38,508 INFO L431 ainManager$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/mix020.oepc.yml/witness.yml [2024-01-31 17:35:39,030 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:35:39,030 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:35:39,032 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix020.oepc.i [2024-01-31 17:35:40,217 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:35:40,463 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:35:40,470 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix020.oepc.i [2024-01-31 17:35:40,492 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c2c45390/9d366c67b0194193902cbee510186413/FLAGb4e7ad307 [2024-01-31 17:35:40,507 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c2c45390/9d366c67b0194193902cbee510186413 [2024-01-31 17:35:40,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:35:40,518 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:35:40,532 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:35:40,532 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:35:40,536 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:35:40,537 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:35:39" (1/2) ... [2024-01-31 17:35:40,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4506f480 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:35:40, skipping insertion in model container [2024-01-31 17:35:40,538 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:35:39" (1/2) ... [2024-01-31 17:35:40,539 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2c9e2bbb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:35:40, skipping insertion in model container [2024-01-31 17:35:40,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:35:40" (2/2) ... [2024-01-31 17:35:40,544 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4506f480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:40, skipping insertion in model container [2024-01-31 17:35:40,545 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:35:40" (2/2) ... [2024-01-31 17:35:40,545 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:35:43,151 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:35:43,153 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-31 17:35:43,153 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 17:35:43,181 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:35:43,314 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/mix020.oepc.i[945,958] [2024-01-31 17:35:43,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:35:43,472 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:35:43,480 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/mix020.oepc.i[945,958] Start Parsing Local [2024-01-31 17:35:43,504 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry [2024-01-31 17:35:43,576 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:35:43,606 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:35:43,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:43 WrapperNode [2024-01-31 17:35:43,608 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:35:43,609 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:35:43,609 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:35:43,609 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:35:43,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:43" (1/1) ... [2024-01-31 17:35:43,649 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:43" (1/1) ... [2024-01-31 17:35:43,675 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 146 [2024-01-31 17:35:43,676 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:35:43,677 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:35:43,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:35:43,677 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:35:43,686 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:43" (1/1) ... [2024-01-31 17:35:43,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:43" (1/1) ... [2024-01-31 17:35:43,697 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:43" (1/1) ... [2024-01-31 17:35:43,719 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 17:35:43,720 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:43" (1/1) ... [2024-01-31 17:35:43,720 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:43" (1/1) ... [2024-01-31 17:35:43,731 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:43" (1/1) ... [2024-01-31 17:35:43,737 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:43" (1/1) ... [2024-01-31 17:35:43,738 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:43" (1/1) ... [2024-01-31 17:35:43,744 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:43" (1/1) ... [2024-01-31 17:35:43,747 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:35:43,749 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:35:43,749 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:35:43,750 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:35:43,750 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:43" (1/1) ... [2024-01-31 17:35:43,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:35:43,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:35:43,778 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 17:35:43,815 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 17:35:43,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:35:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:35:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:35:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:35:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:35:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:35:43,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:35:43,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:35:43,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:35:43,832 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 17:35:43,832 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 17:35:43,833 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 17:35:43,833 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 17:35:43,833 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-31 17:35:43,833 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-31 17:35:43,834 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-31 17:35:43,834 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-31 17:35:43,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:35:43,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:35:43,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:35:43,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:35:43,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:35:43,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:35:43,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:35:43,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:35:43,836 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 17:35:43,952 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:35:43,954 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:35:44,207 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:35:44,207 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:35:44,377 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:35:44,377 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 17:35:44,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:35:44 BoogieIcfgContainer [2024-01-31 17:35:44,378 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:35:44,381 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:35:44,381 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:35:44,383 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:35:44,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:35:39" (1/4) ... [2024-01-31 17:35:44,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d5fe10 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:35:44, skipping insertion in model container [2024-01-31 17:35:44,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:35:40" (2/4) ... [2024-01-31 17:35:44,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d5fe10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:35:44, skipping insertion in model container [2024-01-31 17:35:44,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:43" (3/4) ... [2024-01-31 17:35:44,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d5fe10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:35:44, skipping insertion in model container [2024-01-31 17:35:44,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:35:44" (4/4) ... [2024-01-31 17:35:44,386 INFO L112 eAbstractionObserver]: Analyzing ICFG mix020.oepc.i [2024-01-31 17:35:44,398 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:35:44,399 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-01-31 17:35:44,399 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:35:44,441 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 17:35:44,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 52 transitions, 120 flow [2024-01-31 17:35:44,501 INFO L124 PetriNetUnfolderBase]: 1/48 cut-off events. [2024-01-31 17:35:44,501 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:35:44,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 1/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 101 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2024-01-31 17:35:44,506 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 52 transitions, 120 flow [2024-01-31 17:35:44,513 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 48 transitions, 108 flow [2024-01-31 17:35:44,526 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:35:44,532 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;@27e5a024, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:35:44,533 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-01-31 17:35:44,537 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:35:44,537 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-01-31 17:35:44,537 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:35:44,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:44,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:35:44,539 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:44,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:44,544 INFO L85 PathProgramCache]: Analyzing trace with hash 12462588, now seen corresponding path program 1 times [2024-01-31 17:35:44,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:44,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345677769] [2024-01-31 17:35:44,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:44,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:44,696 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 17:35:44,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:44,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345677769] [2024-01-31 17:35:44,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345677769] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:44,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:44,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:35:44,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520836611] [2024-01-31 17:35:44,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:44,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-31 17:35:44,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:44,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-31 17:35:44,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-31 17:35:44,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 52 [2024-01-31 17:35:44,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 48 transitions, 108 flow. Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 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 17:35:44,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:44,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 52 [2024-01-31 17:35:44,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:45,434 INFO L124 PetriNetUnfolderBase]: 3179/5508 cut-off events. [2024-01-31 17:35:45,434 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:35:45,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10036 conditions, 5508 events. 3179/5508 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 40876 event pairs, 3179 based on Foata normal form. 135/5023 useless extension candidates. Maximal degree in co-relation 10024. Up to 4391 conditions per place. [2024-01-31 17:35:45,475 INFO L140 encePairwiseOnDemand]: 50/52 looper letters, 24 selfloop transitions, 0 changer transitions 0/46 dead transitions. [2024-01-31 17:35:45,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 46 transitions, 152 flow [2024-01-31 17:35:45,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-31 17:35:45,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-31 17:35:45,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 78 transitions. [2024-01-31 17:35:45,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-01-31 17:35:45,487 INFO L175 Difference]: Start difference. First operand has 60 places, 48 transitions, 108 flow. Second operand 2 states and 78 transitions. [2024-01-31 17:35:45,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 46 transitions, 152 flow [2024-01-31 17:35:45,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 46 transitions, 148 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 17:35:45,494 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 100 flow [2024-01-31 17:35:45,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=100, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-01-31 17:35:45,498 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -4 predicate places. [2024-01-31 17:35:45,498 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 100 flow [2024-01-31 17:35:45,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 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 17:35:45,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:45,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:35:45,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:35:45,499 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:45,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:45,500 INFO L85 PathProgramCache]: Analyzing trace with hash 12462589, now seen corresponding path program 1 times [2024-01-31 17:35:45,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:45,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877378850] [2024-01-31 17:35:45,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:45,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:45,642 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 17:35:45,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:45,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877378850] [2024-01-31 17:35:45,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877378850] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:45,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:45,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:35:45,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881783472] [2024-01-31 17:35:45,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:45,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:35:45,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:45,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:35:45,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:35:45,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 52 [2024-01-31 17:35:45,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 100 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 17:35:45,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:45,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 52 [2024-01-31 17:35:45,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:46,041 INFO L124 PetriNetUnfolderBase]: 2495/3993 cut-off events. [2024-01-31 17:35:46,042 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:35:46,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7566 conditions, 3993 events. 2495/3993 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 25014 event pairs, 1647 based on Foata normal form. 0/3914 useless extension candidates. Maximal degree in co-relation 7563. Up to 2779 conditions per place. [2024-01-31 17:35:46,063 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 37 selfloop transitions, 2 changer transitions 2/63 dead transitions. [2024-01-31 17:35:46,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 222 flow [2024-01-31 17:35:46,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:35:46,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:35:46,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-01-31 17:35:46,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7692307692307693 [2024-01-31 17:35:46,069 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 100 flow. Second operand 3 states and 120 transitions. [2024-01-31 17:35:46,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 222 flow [2024-01-31 17:35:46,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 222 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:35:46,071 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 100 flow [2024-01-31 17:35:46,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-01-31 17:35:46,072 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -3 predicate places. [2024-01-31 17:35:46,072 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 100 flow [2024-01-31 17:35:46,073 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 17:35:46,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:46,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:35:46,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:35:46,073 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:46,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:46,074 INFO L85 PathProgramCache]: Analyzing trace with hash -908253651, now seen corresponding path program 1 times [2024-01-31 17:35:46,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:46,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973680262] [2024-01-31 17:35:46,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:46,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:46,138 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 17:35:46,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:46,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973680262] [2024-01-31 17:35:46,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973680262] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:46,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:46,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:35:46,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316468395] [2024-01-31 17:35:46,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:46,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:35:46,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:46,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:35:46,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:35:46,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 52 [2024-01-31 17:35:46,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 17:35:46,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:46,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 52 [2024-01-31 17:35:46,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:46,604 INFO L124 PetriNetUnfolderBase]: 3311/5211 cut-off events. [2024-01-31 17:35:46,604 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-01-31 17:35:46,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10204 conditions, 5211 events. 3311/5211 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 34486 event pairs, 2495 based on Foata normal form. 0/4944 useless extension candidates. Maximal degree in co-relation 10200. Up to 3465 conditions per place. [2024-01-31 17:35:46,634 INFO L140 encePairwiseOnDemand]: 50/52 looper letters, 33 selfloop transitions, 1 changer transitions 1/53 dead transitions. [2024-01-31 17:35:46,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 53 transitions, 190 flow [2024-01-31 17:35:46,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:35:46,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:35:46,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-01-31 17:35:46,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6538461538461539 [2024-01-31 17:35:46,639 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 100 flow. Second operand 3 states and 102 transitions. [2024-01-31 17:35:46,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 53 transitions, 190 flow [2024-01-31 17:35:46,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:35:46,642 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 94 flow [2024-01-31 17:35:46,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2024-01-31 17:35:46,644 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -5 predicate places. [2024-01-31 17:35:46,644 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 94 flow [2024-01-31 17:35:46,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 17:35:46,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:46,645 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 17:35:46,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:35:46,645 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:46,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:46,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1908908311, now seen corresponding path program 1 times [2024-01-31 17:35:46,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:46,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889619945] [2024-01-31 17:35:46,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:46,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:46,882 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 17:35:46,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:46,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889619945] [2024-01-31 17:35:46,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889619945] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:46,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:46,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:35:46,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062988602] [2024-01-31 17:35:46,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:46,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:35:46,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:46,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:35:46,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:35:46,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-01-31 17:35:46,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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 17:35:46,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:46,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-01-31 17:35:46,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:49,708 INFO L124 PetriNetUnfolderBase]: 26053/37669 cut-off events. [2024-01-31 17:35:49,709 INFO L125 PetriNetUnfolderBase]: For 861/861 co-relation queries the response was YES. [2024-01-31 17:35:49,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74060 conditions, 37669 events. 26053/37669 cut-off events. For 861/861 co-relation queries the response was YES. Maximal size of possible extension queue 1675. Compared 266815 event pairs, 8126 based on Foata normal form. 869/38421 useless extension candidates. Maximal degree in co-relation 74056. Up to 18513 conditions per place. [2024-01-31 17:35:49,883 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 50 selfloop transitions, 7 changer transitions 63/132 dead transitions. [2024-01-31 17:35:49,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 132 transitions, 522 flow [2024-01-31 17:35:49,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:35:49,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:35:49,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 234 transitions. [2024-01-31 17:35:49,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-01-31 17:35:49,886 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 94 flow. Second operand 7 states and 234 transitions. [2024-01-31 17:35:49,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 132 transitions, 522 flow [2024-01-31 17:35:50,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 132 transitions, 520 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:35:50,064 INFO L231 Difference]: Finished difference. Result has 65 places, 48 transitions, 179 flow [2024-01-31 17:35:50,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=179, PETRI_PLACES=65, PETRI_TRANSITIONS=48} [2024-01-31 17:35:50,066 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 5 predicate places. [2024-01-31 17:35:50,066 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 48 transitions, 179 flow [2024-01-31 17:35:50,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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 17:35:50,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:50,067 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 17:35:50,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:35:50,067 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:50,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:50,068 INFO L85 PathProgramCache]: Analyzing trace with hash 710163350, now seen corresponding path program 1 times [2024-01-31 17:35:50,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:50,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88394788] [2024-01-31 17:35:50,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:50,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:50,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:50,263 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 17:35:50,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:50,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88394788] [2024-01-31 17:35:50,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88394788] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:50,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:50,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:35:50,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526829887] [2024-01-31 17:35:50,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:50,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:35:50,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:50,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:35:50,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:35:50,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 52 [2024-01-31 17:35:50,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 48 transitions, 179 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 17:35:50,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:50,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 52 [2024-01-31 17:35:50,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:52,783 INFO L124 PetriNetUnfolderBase]: 17389/26715 cut-off events. [2024-01-31 17:35:52,783 INFO L125 PetriNetUnfolderBase]: For 15931/17020 co-relation queries the response was YES. [2024-01-31 17:35:52,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67440 conditions, 26715 events. 17389/26715 cut-off events. For 15931/17020 co-relation queries the response was YES. Maximal size of possible extension queue 1355. Compared 206534 event pairs, 4735 based on Foata normal form. 713/26466 useless extension candidates. Maximal degree in co-relation 67431. Up to 16269 conditions per place. [2024-01-31 17:35:52,916 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 35 selfloop transitions, 3 changer transitions 43/101 dead transitions. [2024-01-31 17:35:52,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 101 transitions, 497 flow [2024-01-31 17:35:52,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:35:52,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:35:52,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 217 transitions. [2024-01-31 17:35:52,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2024-01-31 17:35:52,920 INFO L175 Difference]: Start difference. First operand has 65 places, 48 transitions, 179 flow. Second operand 7 states and 217 transitions. [2024-01-31 17:35:52,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 101 transitions, 497 flow [2024-01-31 17:35:53,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 101 transitions, 467 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-31 17:35:53,011 INFO L231 Difference]: Finished difference. Result has 70 places, 48 transitions, 180 flow [2024-01-31 17:35:53,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=180, PETRI_PLACES=70, PETRI_TRANSITIONS=48} [2024-01-31 17:35:53,012 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 10 predicate places. [2024-01-31 17:35:53,013 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 48 transitions, 180 flow [2024-01-31 17:35:53,013 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 17:35:53,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:53,013 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 17:35:53,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:35:53,013 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:53,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:53,014 INFO L85 PathProgramCache]: Analyzing trace with hash 718817855, now seen corresponding path program 1 times [2024-01-31 17:35:53,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:53,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710125834] [2024-01-31 17:35:53,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:53,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:53,131 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 17:35:53,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:53,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710125834] [2024-01-31 17:35:53,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710125834] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:53,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:53,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:35:53,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657171595] [2024-01-31 17:35:53,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:53,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:35:53,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:53,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:35:53,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:35:53,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 52 [2024-01-31 17:35:53,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 48 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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 17:35:53,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:53,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 52 [2024-01-31 17:35:53,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:55,723 INFO L124 PetriNetUnfolderBase]: 18597/28752 cut-off events. [2024-01-31 17:35:55,723 INFO L125 PetriNetUnfolderBase]: For 25784/26286 co-relation queries the response was YES. [2024-01-31 17:35:55,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73477 conditions, 28752 events. 18597/28752 cut-off events. For 25784/26286 co-relation queries the response was YES. Maximal size of possible extension queue 1354. Compared 220882 event pairs, 6650 based on Foata normal form. 693/29044 useless extension candidates. Maximal degree in co-relation 73463. Up to 20114 conditions per place. [2024-01-31 17:35:56,109 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 41 selfloop transitions, 5 changer transitions 47/111 dead transitions. [2024-01-31 17:35:56,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 111 transitions, 592 flow [2024-01-31 17:35:56,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:35:56,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:35:56,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 220 transitions. [2024-01-31 17:35:56,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6043956043956044 [2024-01-31 17:35:56,111 INFO L175 Difference]: Start difference. First operand has 70 places, 48 transitions, 180 flow. Second operand 7 states and 220 transitions. [2024-01-31 17:35:56,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 111 transitions, 592 flow [2024-01-31 17:35:56,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 111 transitions, 566 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-01-31 17:35:56,364 INFO L231 Difference]: Finished difference. Result has 69 places, 51 transitions, 217 flow [2024-01-31 17:35:56,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=217, PETRI_PLACES=69, PETRI_TRANSITIONS=51} [2024-01-31 17:35:56,365 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 9 predicate places. [2024-01-31 17:35:56,365 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 51 transitions, 217 flow [2024-01-31 17:35:56,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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 17:35:56,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:56,366 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 17:35:56,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:35:56,366 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:56,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:56,367 INFO L85 PathProgramCache]: Analyzing trace with hash -889787296, now seen corresponding path program 1 times [2024-01-31 17:35:56,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:56,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123311655] [2024-01-31 17:35:56,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:56,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:56,458 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 17:35:56,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:56,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123311655] [2024-01-31 17:35:56,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123311655] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:56,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:56,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:35:56,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468271513] [2024-01-31 17:35:56,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:56,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:35:56,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:56,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:35:56,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:35:56,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 52 [2024-01-31 17:35:56,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 51 transitions, 217 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 17:35:56,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:56,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 52 [2024-01-31 17:35:56,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:36:00,574 INFO L124 PetriNetUnfolderBase]: 27952/43411 cut-off events. [2024-01-31 17:36:00,574 INFO L125 PetriNetUnfolderBase]: For 29594/33408 co-relation queries the response was YES. [2024-01-31 17:36:00,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104453 conditions, 43411 events. 27952/43411 cut-off events. For 29594/33408 co-relation queries the response was YES. Maximal size of possible extension queue 1895. Compared 343862 event pairs, 4734 based on Foata normal form. 1637/43899 useless extension candidates. Maximal degree in co-relation 104440. Up to 20891 conditions per place. [2024-01-31 17:36:00,973 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 56 selfloop transitions, 6 changer transitions 0/85 dead transitions. [2024-01-31 17:36:00,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 85 transitions, 431 flow [2024-01-31 17:36:00,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:36:00,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:36:00,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-01-31 17:36:00,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6971153846153846 [2024-01-31 17:36:00,975 INFO L175 Difference]: Start difference. First operand has 69 places, 51 transitions, 217 flow. Second operand 4 states and 145 transitions. [2024-01-31 17:36:00,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 85 transitions, 431 flow [2024-01-31 17:36:01,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 85 transitions, 422 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-31 17:36:01,287 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 254 flow [2024-01-31 17:36:01,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2024-01-31 17:36:01,288 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 7 predicate places. [2024-01-31 17:36:01,288 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 254 flow [2024-01-31 17:36:01,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 17:36:01,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:36:01,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:36:01,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 17:36:01,289 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:36:01,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:36:01,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1027343978, now seen corresponding path program 1 times [2024-01-31 17:36:01,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:36:01,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634364833] [2024-01-31 17:36:01,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:36:01,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:36:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:36:01,447 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 17:36:01,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:36:01,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634364833] [2024-01-31 17:36:01,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634364833] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:36:01,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:36:01,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:36:01,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80620714] [2024-01-31 17:36:01,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:36:01,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:36:01,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:36:01,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:36:01,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:36:01,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-01-31 17:36:01,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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 17:36:01,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:36:01,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-01-31 17:36:01,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:36:06,646 INFO L124 PetriNetUnfolderBase]: 40289/59046 cut-off events. [2024-01-31 17:36:06,647 INFO L125 PetriNetUnfolderBase]: For 61607/64756 co-relation queries the response was YES. [2024-01-31 17:36:06,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165301 conditions, 59046 events. 40289/59046 cut-off events. For 61607/64756 co-relation queries the response was YES. Maximal size of possible extension queue 2502. Compared 446610 event pairs, 12767 based on Foata normal form. 924/56843 useless extension candidates. Maximal degree in co-relation 165288. Up to 27250 conditions per place. [2024-01-31 17:36:07,171 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 111 selfloop transitions, 14 changer transitions 0/142 dead transitions. [2024-01-31 17:36:07,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 142 transitions, 839 flow [2024-01-31 17:36:07,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 17:36:07,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 17:36:07,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 249 transitions. [2024-01-31 17:36:07,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5985576923076923 [2024-01-31 17:36:07,174 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 254 flow. Second operand 8 states and 249 transitions. [2024-01-31 17:36:07,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 142 transitions, 839 flow [2024-01-31 17:36:07,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 142 transitions, 831 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-01-31 17:36:07,186 INFO L231 Difference]: Finished difference. Result has 79 places, 63 transitions, 365 flow [2024-01-31 17:36:07,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=365, PETRI_PLACES=79, PETRI_TRANSITIONS=63} [2024-01-31 17:36:07,188 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 19 predicate places. [2024-01-31 17:36:07,189 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 63 transitions, 365 flow [2024-01-31 17:36:07,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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 17:36:07,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:36:07,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:36:07,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 17:36:07,190 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:36:07,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:36:07,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1048730414, now seen corresponding path program 1 times [2024-01-31 17:36:07,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:36:07,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690643899] [2024-01-31 17:36:07,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:36:07,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:36:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:36:07,343 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 17:36:07,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:36:07,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690643899] [2024-01-31 17:36:07,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690643899] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:36:07,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:36:07,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:36:07,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905823986] [2024-01-31 17:36:07,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:36:07,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:36:07,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:36:07,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:36:07,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:36:07,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 52 [2024-01-31 17:36:07,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 63 transitions, 365 flow. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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 17:36:07,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:36:07,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 52 [2024-01-31 17:36:07,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:36:12,000 INFO L124 PetriNetUnfolderBase]: 33098/50042 cut-off events. [2024-01-31 17:36:12,000 INFO L125 PetriNetUnfolderBase]: For 51122/54935 co-relation queries the response was YES. [2024-01-31 17:36:12,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136312 conditions, 50042 events. 33098/50042 cut-off events. For 51122/54935 co-relation queries the response was YES. Maximal size of possible extension queue 2045. Compared 381356 event pairs, 3976 based on Foata normal form. 2403/51064 useless extension candidates. Maximal degree in co-relation 136293. Up to 17385 conditions per place. [2024-01-31 17:36:12,309 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 73 selfloop transitions, 10 changer transitions 3/113 dead transitions. [2024-01-31 17:36:12,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 113 transitions, 687 flow [2024-01-31 17:36:12,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:36:12,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:36:12,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 186 transitions. [2024-01-31 17:36:12,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7153846153846154 [2024-01-31 17:36:12,312 INFO L175 Difference]: Start difference. First operand has 79 places, 63 transitions, 365 flow. Second operand 5 states and 186 transitions. [2024-01-31 17:36:12,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 113 transitions, 687 flow [2024-01-31 17:36:12,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 113 transitions, 667 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-01-31 17:36:12,626 INFO L231 Difference]: Finished difference. Result has 85 places, 65 transitions, 384 flow [2024-01-31 17:36:12,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=384, PETRI_PLACES=85, PETRI_TRANSITIONS=65} [2024-01-31 17:36:12,627 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 25 predicate places. [2024-01-31 17:36:12,627 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 65 transitions, 384 flow [2024-01-31 17:36:12,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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 17:36:12,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:36:12,628 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] [2024-01-31 17:36:12,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 17:36:12,628 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:36:12,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:36:12,629 INFO L85 PathProgramCache]: Analyzing trace with hash -734796159, now seen corresponding path program 1 times [2024-01-31 17:36:12,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:36:12,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838295413] [2024-01-31 17:36:12,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:36:12,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:36:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:36:12,827 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 17:36:12,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:36:12,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838295413] [2024-01-31 17:36:12,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838295413] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:36:12,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:36:12,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:36:12,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882299636] [2024-01-31 17:36:12,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:36:12,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:36:12,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:36:12,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:36:12,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:36:12,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 52 [2024-01-31 17:36:12,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 65 transitions, 384 flow. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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 17:36:12,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:36:12,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 52 [2024-01-31 17:36:12,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:36:16,341 INFO L124 PetriNetUnfolderBase]: 25522/37790 cut-off events. [2024-01-31 17:36:16,342 INFO L125 PetriNetUnfolderBase]: For 52253/54866 co-relation queries the response was YES. [2024-01-31 17:36:16,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112430 conditions, 37790 events. 25522/37790 cut-off events. For 52253/54866 co-relation queries the response was YES. Maximal size of possible extension queue 1764. Compared 270843 event pairs, 2810 based on Foata normal form. 1472/37934 useless extension candidates. Maximal degree in co-relation 112408. Up to 13086 conditions per place. [2024-01-31 17:36:16,565 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 86 selfloop transitions, 14 changer transitions 2/129 dead transitions. [2024-01-31 17:36:16,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 129 transitions, 797 flow [2024-01-31 17:36:16,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:36:16,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:36:16,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 225 transitions. [2024-01-31 17:36:16,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7211538461538461 [2024-01-31 17:36:16,567 INFO L175 Difference]: Start difference. First operand has 85 places, 65 transitions, 384 flow. Second operand 6 states and 225 transitions. [2024-01-31 17:36:16,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 129 transitions, 797 flow [2024-01-31 17:36:16,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 129 transitions, 775 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-01-31 17:36:16,603 INFO L231 Difference]: Finished difference. Result has 86 places, 70 transitions, 448 flow [2024-01-31 17:36:16,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=448, PETRI_PLACES=86, PETRI_TRANSITIONS=70} [2024-01-31 17:36:16,604 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 26 predicate places. [2024-01-31 17:36:16,604 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 70 transitions, 448 flow [2024-01-31 17:36:16,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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 17:36:16,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:36:16,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:36:16,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 17:36:16,605 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:36:16,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:36:16,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1203279108, now seen corresponding path program 1 times [2024-01-31 17:36:16,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:36:16,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050222629] [2024-01-31 17:36:16,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:36:16,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:36:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:36:17,513 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 17:36:17,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:36:17,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050222629] [2024-01-31 17:36:17,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050222629] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:36:17,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:36:17,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:36:17,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935528259] [2024-01-31 17:36:17,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:36:17,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:36:17,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:36:17,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:36:17,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:36:17,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 52 [2024-01-31 17:36:17,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 70 transitions, 448 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:36:17,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:36:17,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 52 [2024-01-31 17:36:17,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:36:21,801 INFO L124 PetriNetUnfolderBase]: 24449/42852 cut-off events. [2024-01-31 17:36:21,801 INFO L125 PetriNetUnfolderBase]: For 76793/87949 co-relation queries the response was YES. [2024-01-31 17:36:22,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125328 conditions, 42852 events. 24449/42852 cut-off events. For 76793/87949 co-relation queries the response was YES. Maximal size of possible extension queue 2656. Compared 407683 event pairs, 11713 based on Foata normal form. 1402/40751 useless extension candidates. Maximal degree in co-relation 125306. Up to 16169 conditions per place. [2024-01-31 17:36:22,095 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 72 selfloop transitions, 13 changer transitions 20/147 dead transitions. [2024-01-31 17:36:22,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 147 transitions, 940 flow [2024-01-31 17:36:22,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 17:36:22,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 17:36:22,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 266 transitions. [2024-01-31 17:36:22,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6394230769230769 [2024-01-31 17:36:22,097 INFO L175 Difference]: Start difference. First operand has 86 places, 70 transitions, 448 flow. Second operand 8 states and 266 transitions. [2024-01-31 17:36:22,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 147 transitions, 940 flow [2024-01-31 17:36:22,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 147 transitions, 909 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-01-31 17:36:22,720 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 508 flow [2024-01-31 17:36:22,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=508, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2024-01-31 17:36:22,720 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 36 predicate places. [2024-01-31 17:36:22,720 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 508 flow [2024-01-31 17:36:22,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:36:22,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:36:22,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:36:22,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 17:36:22,721 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:36:22,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:36:22,722 INFO L85 PathProgramCache]: Analyzing trace with hash 963401994, now seen corresponding path program 2 times [2024-01-31 17:36:22,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:36:22,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283620509] [2024-01-31 17:36:22,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:36:22,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:36:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:36:23,401 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 17:36:23,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:36:23,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283620509] [2024-01-31 17:36:23,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283620509] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:36:23,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:36:23,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:36:23,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959299917] [2024-01-31 17:36:23,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:36:23,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:36:23,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:36:23,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:36:23,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:36:23,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 52 [2024-01-31 17:36:23,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 508 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:36:23,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:36:23,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 52 [2024-01-31 17:36:23,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand