./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix007.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/mix007.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/mix007.oepc.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix007.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 17:33:47,197 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:33:47,284 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:33:47,290 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:33:47,290 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:33:47,309 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:33:47,310 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:33:47,310 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:33:47,311 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:33:47,311 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:33:47,311 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:33:47,312 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:33:47,312 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:33:47,313 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:33:47,313 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:33:47,314 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:33:47,314 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:33:47,314 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:33:47,315 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:33:47,315 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:33:47,315 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:33:47,316 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:33:47,316 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:33:47,317 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:33:47,317 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:33:47,317 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:33:47,318 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:33:47,318 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:33:47,318 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:33:47,318 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:33:47,319 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:33:47,319 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:33:47,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:33:47,320 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:33:47,320 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:33:47,320 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:33:47,320 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:33:47,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:33:47,321 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:33:47,321 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:33:47,321 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:33:47,322 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:33:47,322 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:33:47,322 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:33:47,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:33:47,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:33:47,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:33:47,567 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:33:47,569 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:33:47,570 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix007.oepc.i [2024-01-31 17:33:48,762 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:33:49,074 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:33:49,075 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix007.oepc.i [2024-01-31 17:33:49,099 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1439f75c1/679330f6c5c64078a310f2a66eb3fa73/FLAG5c53e100f [2024-01-31 17:33:49,109 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1439f75c1/679330f6c5c64078a310f2a66eb3fa73 [2024-01-31 17:33:49,111 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:33:49,112 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:33:49,113 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix007.oepc.yml/witness.yml [2024-01-31 17:33:49,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:33:49,981 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:33:49,984 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:33:49,984 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:33:49,989 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:33:49,990 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:33:49" (1/2) ... [2024-01-31 17:33:49,991 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c0bc8ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:33:49, skipping insertion in model container [2024-01-31 17:33:49,992 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:33:49" (1/2) ... [2024-01-31 17:33:49,993 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@33ad7cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:33:49, skipping insertion in model container [2024-01-31 17:33:49,994 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:33:49" (2/2) ... [2024-01-31 17:33:49,994 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c0bc8ca and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:49, skipping insertion in model container [2024-01-31 17:33:49,994 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:33:49" (2/2) ... [2024-01-31 17:33:49,995 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:33:52,392 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:33:52,393 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-31 17:33:52,393 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 17:33:52,420 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:33:52,566 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/mix007.oepc.i[945,958] [2024-01-31 17:33:52,791 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:33:52,808 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:33:52,816 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/mix007.oepc.i[945,958] Start Parsing Local [2024-01-31 17:33:52,833 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry [2024-01-31 17:33:52,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:33:52,923 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:33:52,924 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:52 WrapperNode [2024-01-31 17:33:52,924 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:33:52,925 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:33:52,926 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:33:52,926 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:33:52,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:52" (1/1) ... [2024-01-31 17:33:52,958 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:52" (1/1) ... [2024-01-31 17:33:52,991 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 147 [2024-01-31 17:33:52,992 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:33:52,993 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:33:52,993 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:33:52,993 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:33:53,001 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:52" (1/1) ... [2024-01-31 17:33:53,002 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:52" (1/1) ... [2024-01-31 17:33:53,013 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:52" (1/1) ... [2024-01-31 17:33:53,034 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 17:33:53,034 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:52" (1/1) ... [2024-01-31 17:33:53,034 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:52" (1/1) ... [2024-01-31 17:33:53,049 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:52" (1/1) ... [2024-01-31 17:33:53,053 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:52" (1/1) ... [2024-01-31 17:33:53,054 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:52" (1/1) ... [2024-01-31 17:33:53,060 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:52" (1/1) ... [2024-01-31 17:33:53,062 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:33:53,065 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:33:53,065 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:33:53,065 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:33:53,065 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:52" (1/1) ... [2024-01-31 17:33:53,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:33:53,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:33:53,097 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 17:33:53,103 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 17:33:53,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:33:53,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:33:53,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:33:53,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:33:53,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:33:53,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:33:53,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:33:53,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:33:53,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:33:53,127 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 17:33:53,127 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 17:33:53,128 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 17:33:53,128 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 17:33:53,128 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-31 17:33:53,128 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-31 17:33:53,129 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-31 17:33:53,129 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-31 17:33:53,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:33:53,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:33:53,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:33:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:33:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:33:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:33:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:33:53,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:33:53,131 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 17:33:53,235 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:33:53,236 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:33:53,511 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:33:53,512 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:33:53,675 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:33:53,675 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 17:33:53,676 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:33:53 BoogieIcfgContainer [2024-01-31 17:33:53,676 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:33:53,678 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:33:53,678 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:33:53,681 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:33:53,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:33:49" (1/4) ... [2024-01-31 17:33:53,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea88b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:33:53, skipping insertion in model container [2024-01-31 17:33:53,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:33:49" (2/4) ... [2024-01-31 17:33:53,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea88b4b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:33:53, skipping insertion in model container [2024-01-31 17:33:53,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:52" (3/4) ... [2024-01-31 17:33:53,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea88b4b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:33:53, skipping insertion in model container [2024-01-31 17:33:53,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:33:53" (4/4) ... [2024-01-31 17:33:53,684 INFO L112 eAbstractionObserver]: Analyzing ICFG mix007.oepc.i [2024-01-31 17:33:53,698 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:33:53,698 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-01-31 17:33:53,698 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:33:53,741 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 17:33:53,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 53 transitions, 122 flow [2024-01-31 17:33:53,796 INFO L124 PetriNetUnfolderBase]: 1/49 cut-off events. [2024-01-31 17:33:53,796 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:33:53,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 1/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 108 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-01-31 17:33:53,801 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 53 transitions, 122 flow [2024-01-31 17:33:53,804 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 49 transitions, 110 flow [2024-01-31 17:33:53,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:33:53,823 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;@20035897, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:33:53,823 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-01-31 17:33:53,827 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:33:53,828 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-01-31 17:33:53,828 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:33:53,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:53,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:33:53,829 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 17:33:53,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:53,833 INFO L85 PathProgramCache]: Analyzing trace with hash 12705849, now seen corresponding path program 1 times [2024-01-31 17:33:53,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:53,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50589720] [2024-01-31 17:33:53,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:53,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:54,052 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 17:33:54,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:54,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50589720] [2024-01-31 17:33:54,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50589720] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:54,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:54,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:33:54,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707982863] [2024-01-31 17:33:54,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:54,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-31 17:33:54,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:54,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-31 17:33:54,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-31 17:33:54,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-01-31 17:33:54,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 110 flow. Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:54,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:54,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-01-31 17:33:54,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:54,775 INFO L124 PetriNetUnfolderBase]: 3179/5523 cut-off events. [2024-01-31 17:33:54,776 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:33:54,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10051 conditions, 5523 events. 3179/5523 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 41628 event pairs, 3179 based on Foata normal form. 135/5019 useless extension candidates. Maximal degree in co-relation 10039. Up to 4391 conditions per place. [2024-01-31 17:33:54,846 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 24 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2024-01-31 17:33:54,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 47 transitions, 154 flow [2024-01-31 17:33:54,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-31 17:33:54,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-31 17:33:54,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2024-01-31 17:33:54,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7547169811320755 [2024-01-31 17:33:54,869 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 110 flow. Second operand 2 states and 80 transitions. [2024-01-31 17:33:54,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 47 transitions, 154 flow [2024-01-31 17:33:54,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 47 transitions, 150 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 17:33:54,898 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 102 flow [2024-01-31 17:33:54,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=102, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2024-01-31 17:33:54,902 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2024-01-31 17:33:54,902 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 102 flow [2024-01-31 17:33:54,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:54,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:54,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:33:54,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:33:54,917 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 17:33:54,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:54,917 INFO L85 PathProgramCache]: Analyzing trace with hash 12705850, now seen corresponding path program 1 times [2024-01-31 17:33:54,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:54,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150639961] [2024-01-31 17:33:54,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:54,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:55,075 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 17:33:55,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:55,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150639961] [2024-01-31 17:33:55,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150639961] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:55,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:55,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:33:55,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236312263] [2024-01-31 17:33:55,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:55,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:33:55,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:55,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:33:55,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:33:55,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-01-31 17:33:55,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:55,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:55,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-01-31 17:33:55,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:55,529 INFO L124 PetriNetUnfolderBase]: 2495/4175 cut-off events. [2024-01-31 17:33:55,529 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:33:55,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7748 conditions, 4175 events. 2495/4175 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 29437 event pairs, 443 based on Foata normal form. 0/4077 useless extension candidates. Maximal degree in co-relation 7745. Up to 2779 conditions per place. [2024-01-31 17:33:55,546 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 37 selfloop transitions, 2 changer transitions 2/64 dead transitions. [2024-01-31 17:33:55,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 64 transitions, 224 flow [2024-01-31 17:33:55,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:33:55,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:33:55,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-01-31 17:33:55,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7735849056603774 [2024-01-31 17:33:55,548 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 102 flow. Second operand 3 states and 123 transitions. [2024-01-31 17:33:55,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 64 transitions, 224 flow [2024-01-31 17:33:55,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 224 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:33:55,550 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 102 flow [2024-01-31 17:33:55,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2024-01-31 17:33:55,551 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2024-01-31 17:33:55,551 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 102 flow [2024-01-31 17:33:55,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:55,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:55,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:33:55,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:33:55,552 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 17:33:55,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:55,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1225667124, now seen corresponding path program 1 times [2024-01-31 17:33:55,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:55,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388961957] [2024-01-31 17:33:55,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:55,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:55,597 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 17:33:55,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:55,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388961957] [2024-01-31 17:33:55,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388961957] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:55,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:55,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:33:55,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038945296] [2024-01-31 17:33:55,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:55,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:33:55,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:55,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:33:55,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:33:55,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 53 [2024-01-31 17:33:55,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:55,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:55,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 53 [2024-01-31 17:33:55,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:56,044 INFO L124 PetriNetUnfolderBase]: 3311/5223 cut-off events. [2024-01-31 17:33:56,045 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-01-31 17:33:56,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10216 conditions, 5223 events. 3311/5223 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 35479 event pairs, 2495 based on Foata normal form. 0/4941 useless extension candidates. Maximal degree in co-relation 10212. Up to 3465 conditions per place. [2024-01-31 17:33:56,069 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 33 selfloop transitions, 1 changer transitions 1/54 dead transitions. [2024-01-31 17:33:56,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 192 flow [2024-01-31 17:33:56,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:33:56,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:33:56,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-01-31 17:33:56,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.660377358490566 [2024-01-31 17:33:56,071 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 102 flow. Second operand 3 states and 105 transitions. [2024-01-31 17:33:56,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 192 flow [2024-01-31 17:33:56,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:33:56,073 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 96 flow [2024-01-31 17:33:56,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=56, PETRI_TRANSITIONS=43} [2024-01-31 17:33:56,073 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2024-01-31 17:33:56,074 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 96 flow [2024-01-31 17:33:56,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:56,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:56,074 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 17:33:56,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:33:56,074 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 17:33:56,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:56,075 INFO L85 PathProgramCache]: Analyzing trace with hash -659024396, now seen corresponding path program 1 times [2024-01-31 17:33:56,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:56,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922524838] [2024-01-31 17:33:56,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:56,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:56,324 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 17:33:56,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:56,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922524838] [2024-01-31 17:33:56,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922524838] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:56,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:56,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:33:56,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697945134] [2024-01-31 17:33:56,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:56,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:33:56,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:56,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:33:56,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:33:56,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-01-31 17:33:56,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 96 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 17:33:56,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:56,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-01-31 17:33:56,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:59,871 INFO L124 PetriNetUnfolderBase]: 31679/45496 cut-off events. [2024-01-31 17:33:59,871 INFO L125 PetriNetUnfolderBase]: For 1036/1036 co-relation queries the response was YES. [2024-01-31 17:33:59,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89578 conditions, 45496 events. 31679/45496 cut-off events. For 1036/1036 co-relation queries the response was YES. Maximal size of possible extension queue 1969. Compared 323550 event pairs, 9979 based on Foata normal form. 1044/46285 useless extension candidates. Maximal degree in co-relation 89574. Up to 22821 conditions per place. [2024-01-31 17:34:00,073 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 51 selfloop transitions, 8 changer transitions 67/138 dead transitions. [2024-01-31 17:34:00,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 138 transitions, 546 flow [2024-01-31 17:34:00,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:34:00,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:34:00,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 240 transitions. [2024-01-31 17:34:00,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6469002695417789 [2024-01-31 17:34:00,079 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 96 flow. Second operand 7 states and 240 transitions. [2024-01-31 17:34:00,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 138 transitions, 546 flow [2024-01-31 17:34:00,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 138 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:34:00,359 INFO L231 Difference]: Finished difference. Result has 66 places, 50 transitions, 193 flow [2024-01-31 17:34:00,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=193, PETRI_PLACES=66, PETRI_TRANSITIONS=50} [2024-01-31 17:34:00,361 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 5 predicate places. [2024-01-31 17:34:00,361 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 50 transitions, 193 flow [2024-01-31 17:34:00,361 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 17:34:00,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:34:00,361 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 17:34:00,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:34:00,362 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 17:34:00,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:34:00,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1287142323, now seen corresponding path program 1 times [2024-01-31 17:34:00,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:34:00,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155645554] [2024-01-31 17:34:00,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:34:00,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:34:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:34:00,549 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 17:34:00,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:34:00,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155645554] [2024-01-31 17:34:00,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155645554] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:34:00,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:34:00,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:34:00,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657006067] [2024-01-31 17:34:00,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:34:00,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:34:00,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:34:00,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:34:00,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:34:00,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-01-31 17:34:00,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 50 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 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 17:34:00,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:34:00,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-01-31 17:34:00,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:34:03,900 INFO L124 PetriNetUnfolderBase]: 27079/39278 cut-off events. [2024-01-31 17:34:03,901 INFO L125 PetriNetUnfolderBase]: For 36187/36898 co-relation queries the response was YES. [2024-01-31 17:34:03,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109559 conditions, 39278 events. 27079/39278 cut-off events. For 36187/36898 co-relation queries the response was YES. Maximal size of possible extension queue 1646. Compared 277233 event pairs, 4709 based on Foata normal form. 1036/40193 useless extension candidates. Maximal degree in co-relation 109550. Up to 15273 conditions per place. [2024-01-31 17:34:04,121 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 66 selfloop transitions, 8 changer transitions 94/180 dead transitions. [2024-01-31 17:34:04,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 180 transitions, 1046 flow [2024-01-31 17:34:04,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:34:04,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:34:04,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 315 transitions. [2024-01-31 17:34:04,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5943396226415094 [2024-01-31 17:34:04,128 INFO L175 Difference]: Start difference. First operand has 66 places, 50 transitions, 193 flow. Second operand 10 states and 315 transitions. [2024-01-31 17:34:04,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 180 transitions, 1046 flow [2024-01-31 17:34:04,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 180 transitions, 964 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-01-31 17:34:04,267 INFO L231 Difference]: Finished difference. Result has 78 places, 54 transitions, 259 flow [2024-01-31 17:34:04,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=259, PETRI_PLACES=78, PETRI_TRANSITIONS=54} [2024-01-31 17:34:04,269 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 17 predicate places. [2024-01-31 17:34:04,269 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 54 transitions, 259 flow [2024-01-31 17:34:04,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 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 17:34:04,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:34:04,269 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 17:34:04,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:34:04,270 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 17:34:04,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:34:04,270 INFO L85 PathProgramCache]: Analyzing trace with hash -389378884, now seen corresponding path program 1 times [2024-01-31 17:34:04,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:34:04,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753231840] [2024-01-31 17:34:04,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:34:04,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:34:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:34:04,411 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 17:34:04,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:34:04,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753231840] [2024-01-31 17:34:04,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753231840] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:34:04,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:34:04,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:34:04,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494600387] [2024-01-31 17:34:04,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:34:04,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:34:04,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:34:04,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:34:04,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:34:04,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-01-31 17:34:04,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 54 transitions, 259 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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 17:34:04,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:34:04,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-01-31 17:34:04,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:34:07,484 INFO L124 PetriNetUnfolderBase]: 23319/34003 cut-off events. [2024-01-31 17:34:07,484 INFO L125 PetriNetUnfolderBase]: For 59103/59619 co-relation queries the response was YES. [2024-01-31 17:34:07,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101941 conditions, 34003 events. 23319/34003 cut-off events. For 59103/59619 co-relation queries the response was YES. Maximal size of possible extension queue 1305. Compared 232635 event pairs, 3269 based on Foata normal form. 700/34557 useless extension candidates. Maximal degree in co-relation 101924. Up to 14697 conditions per place. [2024-01-31 17:34:07,684 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 65 selfloop transitions, 13 changer transitions 82/172 dead transitions. [2024-01-31 17:34:07,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 172 transitions, 1098 flow [2024-01-31 17:34:07,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:34:07,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:34:07,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2024-01-31 17:34:07,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5754716981132075 [2024-01-31 17:34:07,686 INFO L175 Difference]: Start difference. First operand has 78 places, 54 transitions, 259 flow. Second operand 10 states and 305 transitions. [2024-01-31 17:34:07,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 172 transitions, 1098 flow [2024-01-31 17:34:08,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 172 transitions, 1047 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-01-31 17:34:08,197 INFO L231 Difference]: Finished difference. Result has 85 places, 61 transitions, 387 flow [2024-01-31 17:34:08,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=387, PETRI_PLACES=85, PETRI_TRANSITIONS=61} [2024-01-31 17:34:08,198 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 24 predicate places. [2024-01-31 17:34:08,198 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 61 transitions, 387 flow [2024-01-31 17:34:08,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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 17:34:08,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:34:08,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:34:08,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:34:08,199 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 17:34:08,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:34:08,199 INFO L85 PathProgramCache]: Analyzing trace with hash 778761259, now seen corresponding path program 1 times [2024-01-31 17:34:08,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:34:08,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499785825] [2024-01-31 17:34:08,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:34:08,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:34:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:34:08,307 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 17:34:08,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:34:08,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499785825] [2024-01-31 17:34:08,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499785825] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:34:08,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:34:08,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:34:08,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596772455] [2024-01-31 17:34:08,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:34:08,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:34:08,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:34:08,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:34:08,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:34:08,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:34:08,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 61 transitions, 387 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:08,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:34:08,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:34:08,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:34:12,333 INFO L124 PetriNetUnfolderBase]: 29720/45569 cut-off events. [2024-01-31 17:34:12,333 INFO L125 PetriNetUnfolderBase]: For 46882/52698 co-relation queries the response was YES. [2024-01-31 17:34:12,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114136 conditions, 45569 events. 29720/45569 cut-off events. For 46882/52698 co-relation queries the response was YES. Maximal size of possible extension queue 2015. Compared 353933 event pairs, 4640 based on Foata normal form. 1902/45742 useless extension candidates. Maximal degree in co-relation 114114. Up to 22125 conditions per place. [2024-01-31 17:34:12,659 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 59 selfloop transitions, 6 changer transitions 0/97 dead transitions. [2024-01-31 17:34:12,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 97 transitions, 651 flow [2024-01-31 17:34:12,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:34:12,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:34:12,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2024-01-31 17:34:12,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7028301886792453 [2024-01-31 17:34:12,661 INFO L175 Difference]: Start difference. First operand has 85 places, 61 transitions, 387 flow. Second operand 4 states and 149 transitions. [2024-01-31 17:34:12,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 97 transitions, 651 flow [2024-01-31 17:34:13,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 97 transitions, 603 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-01-31 17:34:13,426 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 393 flow [2024-01-31 17:34:13,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=393, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2024-01-31 17:34:13,430 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 16 predicate places. [2024-01-31 17:34:13,430 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 393 flow [2024-01-31 17:34:13,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:13,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:34:13,438 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] [2024-01-31 17:34:13,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 17:34:13,438 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 17:34:13,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:34:13,439 INFO L85 PathProgramCache]: Analyzing trace with hash -37558590, now seen corresponding path program 1 times [2024-01-31 17:34:13,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:34:13,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000505699] [2024-01-31 17:34:13,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:34:13,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:34:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:34:13,563 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 17:34:13,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:34:13,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000505699] [2024-01-31 17:34:13,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000505699] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:34:13,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:34:13,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:34:13,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891294674] [2024-01-31 17:34:13,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:34:13,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:34:13,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:34:13,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:34:13,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:34:13,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:34:13,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 393 flow. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:13,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:34:13,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:34:13,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:34:16,804 INFO L124 PetriNetUnfolderBase]: 24658/37673 cut-off events. [2024-01-31 17:34:16,804 INFO L125 PetriNetUnfolderBase]: For 30744/34933 co-relation queries the response was YES. [2024-01-31 17:34:16,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101304 conditions, 37673 events. 24658/37673 cut-off events. For 30744/34933 co-relation queries the response was YES. Maximal size of possible extension queue 1646. Compared 281074 event pairs, 2810 based on Foata normal form. 1642/37849 useless extension candidates. Maximal degree in co-relation 101285. Up to 12842 conditions per place. [2024-01-31 17:34:17,048 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 77 selfloop transitions, 10 changer transitions 0/119 dead transitions. [2024-01-31 17:34:17,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 119 transitions, 774 flow [2024-01-31 17:34:17,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:34:17,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:34:17,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 191 transitions. [2024-01-31 17:34:17,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.720754716981132 [2024-01-31 17:34:17,049 INFO L175 Difference]: Start difference. First operand has 77 places, 66 transitions, 393 flow. Second operand 5 states and 191 transitions. [2024-01-31 17:34:17,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 119 transitions, 774 flow [2024-01-31 17:34:17,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 119 transitions, 759 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-01-31 17:34:17,067 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 446 flow [2024-01-31 17:34:17,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=446, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2024-01-31 17:34:17,068 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 17 predicate places. [2024-01-31 17:34:17,068 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 446 flow [2024-01-31 17:34:17,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:17,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:34:17,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:34:17,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 17:34:17,069 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 17:34:17,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:34:17,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1582214678, now seen corresponding path program 1 times [2024-01-31 17:34:17,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:34:17,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68594546] [2024-01-31 17:34:17,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:34:17,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:34:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:34:17,242 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 17:34:17,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:34:17,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68594546] [2024-01-31 17:34:17,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68594546] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:34:17,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:34:17,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:34:17,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833701758] [2024-01-31 17:34:17,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:34:17,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:34:17,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:34:17,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:34:17,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:34:17,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:34:17,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 446 flow. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 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 17:34:17,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:34:17,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:34:17,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:34:19,872 INFO L124 PetriNetUnfolderBase]: 20234/30317 cut-off events. [2024-01-31 17:34:19,872 INFO L125 PetriNetUnfolderBase]: For 45798/48723 co-relation queries the response was YES. [2024-01-31 17:34:19,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91951 conditions, 30317 events. 20234/30317 cut-off events. For 45798/48723 co-relation queries the response was YES. Maximal size of possible extension queue 1473. Compared 214769 event pairs, 2236 based on Foata normal form. 962/29926 useless extension candidates. Maximal degree in co-relation 91934. Up to 10494 conditions per place. [2024-01-31 17:34:20,051 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 91 selfloop transitions, 14 changer transitions 0/137 dead transitions. [2024-01-31 17:34:20,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 137 transitions, 917 flow [2024-01-31 17:34:20,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:34:20,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:34:20,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 231 transitions. [2024-01-31 17:34:20,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7264150943396226 [2024-01-31 17:34:20,053 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 446 flow. Second operand 6 states and 231 transitions. [2024-01-31 17:34:20,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 137 transitions, 917 flow [2024-01-31 17:34:20,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 137 transitions, 901 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-31 17:34:20,072 INFO L231 Difference]: Finished difference. Result has 83 places, 76 transitions, 516 flow [2024-01-31 17:34:20,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=516, PETRI_PLACES=83, PETRI_TRANSITIONS=76} [2024-01-31 17:34:20,072 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 22 predicate places. [2024-01-31 17:34:20,073 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 76 transitions, 516 flow [2024-01-31 17:34:20,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 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 17:34:20,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:34:20,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:34:20,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 17:34:20,073 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 17:34:20,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:34:20,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1249939619, now seen corresponding path program 1 times [2024-01-31 17:34:20,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:34:20,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121783719] [2024-01-31 17:34:20,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:34:20,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:34:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:34:20,729 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 17:34:20,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:34:20,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121783719] [2024-01-31 17:34:20,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121783719] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:34:20,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:34:20,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:34:20,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562363993] [2024-01-31 17:34:20,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:34:20,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:34:20,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:34:20,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:34:20,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:34:20,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-01-31 17:34:20,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 516 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 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 17:34:20,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:34:20,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-01-31 17:34:20,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:34:24,945 INFO L124 PetriNetUnfolderBase]: 25720/41262 cut-off events. [2024-01-31 17:34:24,946 INFO L125 PetriNetUnfolderBase]: For 116228/122958 co-relation queries the response was YES. [2024-01-31 17:34:25,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138085 conditions, 41262 events. 25720/41262 cut-off events. For 116228/122958 co-relation queries the response was YES. Maximal size of possible extension queue 2021. Compared 340757 event pairs, 6741 based on Foata normal form. 1006/39226 useless extension candidates. Maximal degree in co-relation 138066. Up to 11311 conditions per place. [2024-01-31 17:34:25,244 INFO L140 encePairwiseOnDemand]: 37/53 looper letters, 132 selfloop transitions, 80 changer transitions 31/270 dead transitions. [2024-01-31 17:34:25,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 270 transitions, 2032 flow [2024-01-31 17:34:25,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-31 17:34:25,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-31 17:34:25,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 412 transitions. [2024-01-31 17:34:25,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5979680696661829 [2024-01-31 17:34:25,247 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 516 flow. Second operand 13 states and 412 transitions. [2024-01-31 17:34:25,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 270 transitions, 2032 flow [2024-01-31 17:34:25,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 270 transitions, 2001 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-01-31 17:34:25,925 INFO L231 Difference]: Finished difference. Result has 102 places, 141 transitions, 1349 flow [2024-01-31 17:34:25,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1349, PETRI_PLACES=102, PETRI_TRANSITIONS=141} [2024-01-31 17:34:25,927 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 41 predicate places. [2024-01-31 17:34:25,927 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 141 transitions, 1349 flow [2024-01-31 17:34:25,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 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 17:34:25,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:34:25,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:34:25,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 17:34:25,928 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 17:34:25,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:34:25,929 INFO L85 PathProgramCache]: Analyzing trace with hash -118409573, now seen corresponding path program 2 times [2024-01-31 17:34:25,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:34:25,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358667657] [2024-01-31 17:34:25,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:34:25,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:34:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:34:26,158 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 17:34:26,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:34:26,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358667657] [2024-01-31 17:34:26,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358667657] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:34:26,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:34:26,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 17:34:26,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987985232] [2024-01-31 17:34:26,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:34:26,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:34:26,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:34:26,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:34:26,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:34:26,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-01-31 17:34:26,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 141 transitions, 1349 flow. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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 17:34:26,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:34:26,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-01-31 17:34:26,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand