./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.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/mix057_power.oepc_pso.oepc_rmo.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/mix057_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix057_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 17:39:40,138 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:39:40,185 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:39:40,190 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:39:40,193 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:39:40,208 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:39:40,208 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:39:40,209 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:39:40,209 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:39:40,210 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:39:40,210 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:39:40,210 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:39:40,211 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:39:40,211 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:39:40,211 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:39:40,212 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:39:40,212 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:39:40,212 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:39:40,213 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:39:40,213 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:39:40,213 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:39:40,214 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:39:40,214 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:39:40,214 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:39:40,214 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:39:40,215 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:39:40,215 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:39:40,215 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:39:40,216 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:39:40,216 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:39:40,216 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:39:40,216 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:39:40,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:39:40,217 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:39:40,217 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:39:40,217 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:39:40,218 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:39:40,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:39:40,218 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:39:40,219 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:39:40,219 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:39:40,224 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:39:40,224 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:39:40,224 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:39:40,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:39:40,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:39:40,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:39:40,463 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:39:40,464 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:39:40,465 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i [2024-01-31 17:39:41,882 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:39:42,097 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:39:42,098 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i [2024-01-31 17:39:42,118 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c9965bcb/f3192f1fef244d5ea4881b4329ab3822/FLAGeac05d14d [2024-01-31 17:39:42,128 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c9965bcb/f3192f1fef244d5ea4881b4329ab3822 [2024-01-31 17:39:42,130 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:39:42,130 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:39:42,131 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix057_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-01-31 17:39:42,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:39:42,713 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:39:42,715 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:39:42,716 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:39:42,719 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:39:42,720 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:39:42" (1/2) ... [2024-01-31 17:39:42,721 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d77c80e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:39:42, skipping insertion in model container [2024-01-31 17:39:42,721 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:39:42" (1/2) ... [2024-01-31 17:39:42,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@48438716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:39:42, skipping insertion in model container [2024-01-31 17:39:42,723 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:39:42" (2/2) ... [2024-01-31 17:39:42,723 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d77c80e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:39:42, skipping insertion in model container [2024-01-31 17:39:42,723 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:39:42" (2/2) ... [2024-01-31 17:39:42,724 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:39:44,573 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:39:44,574 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-31 17:39:44,574 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 17:39:44,624 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:39:44,751 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/mix057_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-01-31 17:39:44,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:39:44,890 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:39:44,899 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/mix057_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local [2024-01-31 17:39:44,918 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry [2024-01-31 17:39:44,957 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:39:44,985 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:39:44,985 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:39:44 WrapperNode [2024-01-31 17:39:44,986 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:39:44,986 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:39:44,987 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:39:44,987 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:39:44,992 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 05:39:44" (1/1) ... [2024-01-31 17:39:45,007 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 05:39:44" (1/1) ... [2024-01-31 17:39:45,037 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 143 [2024-01-31 17:39:45,038 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:39:45,038 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:39:45,039 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:39:45,039 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:39:45,051 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 05:39:44" (1/1) ... [2024-01-31 17:39:45,052 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 05:39:44" (1/1) ... [2024-01-31 17:39:45,065 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 05:39:44" (1/1) ... [2024-01-31 17:39:45,086 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-31 17:39:45,090 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 05:39:44" (1/1) ... [2024-01-31 17:39:45,091 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 05:39:44" (1/1) ... [2024-01-31 17:39:45,107 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 05:39:44" (1/1) ... [2024-01-31 17:39:45,109 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 05:39:44" (1/1) ... [2024-01-31 17:39:45,111 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 05:39:44" (1/1) ... [2024-01-31 17:39:45,128 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 05:39:44" (1/1) ... [2024-01-31 17:39:45,131 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:39:45,132 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:39:45,132 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:39:45,132 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:39:45,132 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 05:39:44" (1/1) ... [2024-01-31 17:39:45,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:39:45,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:39:45,160 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 17:39:45,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 17:39:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:39:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:39:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:39:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:39:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:39:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:39:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:39:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:39:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:39:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 17:39:45,208 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 17:39:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 17:39:45,208 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 17:39:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-31 17:39:45,209 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-31 17:39:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-31 17:39:45,211 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-31 17:39:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:39:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:39:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:39:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:39:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:39:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:39:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:39:45,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:39:45,213 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 17:39:45,351 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:39:45,353 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:39:45,629 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:39:45,629 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:39:45,785 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:39:45,785 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 17:39:45,786 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:39:45 BoogieIcfgContainer [2024-01-31 17:39:45,786 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:39:45,788 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:39:45,788 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:39:45,791 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:39:45,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:39:42" (1/4) ... [2024-01-31 17:39:45,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@478c7e96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:39:45, skipping insertion in model container [2024-01-31 17:39:45,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:39:42" (2/4) ... [2024-01-31 17:39:45,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@478c7e96 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:39:45, skipping insertion in model container [2024-01-31 17:39:45,793 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 05:39:44" (3/4) ... [2024-01-31 17:39:45,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@478c7e96 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:39:45, skipping insertion in model container [2024-01-31 17:39:45,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:39:45" (4/4) ... [2024-01-31 17:39:45,796 INFO L112 eAbstractionObserver]: Analyzing ICFG mix057_power.oepc_pso.oepc_rmo.oepc.i [2024-01-31 17:39:45,810 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:39:45,810 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-01-31 17:39:45,810 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:39:45,854 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 17:39:45,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 51 transitions, 118 flow [2024-01-31 17:39:45,908 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2024-01-31 17:39:45,909 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:39:45,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 1/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2024-01-31 17:39:45,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 51 transitions, 118 flow [2024-01-31 17:39:45,915 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 47 transitions, 106 flow [2024-01-31 17:39:45,922 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:39:45,927 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;@27223cba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:39:45,928 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-01-31 17:39:45,933 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:39:45,933 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-01-31 17:39:45,933 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:39:45,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:45,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:39:45,935 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 17:39:45,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:45,939 INFO L85 PathProgramCache]: Analyzing trace with hash 12183642, now seen corresponding path program 1 times [2024-01-31 17:39:45,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:45,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066399158] [2024-01-31 17:39:45,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:45,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:46,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:39:46,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:46,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066399158] [2024-01-31 17:39:46,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066399158] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:46,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:46,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:39:46,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141601990] [2024-01-31 17:39:46,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:46,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-31 17:39:46,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:46,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-31 17:39:46,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-31 17:39:46,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 51 [2024-01-31 17:39:46,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 106 flow. Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:39:46,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:46,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 51 [2024-01-31 17:39:46,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:46,930 INFO L124 PetriNetUnfolderBase]: 3179/5463 cut-off events. [2024-01-31 17:39:46,931 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:39:46,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9991 conditions, 5463 events. 3179/5463 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 40376 event pairs, 3179 based on Foata normal form. 135/4974 useless extension candidates. Maximal degree in co-relation 9979. Up to 4391 conditions per place. [2024-01-31 17:39:46,973 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 24 selfloop transitions, 0 changer transitions 0/45 dead transitions. [2024-01-31 17:39:46,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 45 transitions, 150 flow [2024-01-31 17:39:46,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-31 17:39:46,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-31 17:39:46,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 76 transitions. [2024-01-31 17:39:46,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7450980392156863 [2024-01-31 17:39:46,986 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 106 flow. Second operand 2 states and 76 transitions. [2024-01-31 17:39:46,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 45 transitions, 150 flow [2024-01-31 17:39:46,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 45 transitions, 146 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 17:39:46,997 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 98 flow [2024-01-31 17:39:46,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2024-01-31 17:39:47,002 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2024-01-31 17:39:47,002 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 98 flow [2024-01-31 17:39:47,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:39:47,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:47,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:39:47,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:39:47,003 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 17:39:47,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:47,005 INFO L85 PathProgramCache]: Analyzing trace with hash 12183643, now seen corresponding path program 1 times [2024-01-31 17:39:47,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:47,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355197609] [2024-01-31 17:39:47,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:47,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:47,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:39:47,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:47,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355197609] [2024-01-31 17:39:47,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355197609] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:47,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:47,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:39:47,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929024749] [2024-01-31 17:39:47,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:47,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:39:47,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:47,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:39:47,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:39:47,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 51 [2024-01-31 17:39:47,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:39:47,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:47,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 51 [2024-01-31 17:39:47,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:47,664 INFO L124 PetriNetUnfolderBase]: 2495/4163 cut-off events. [2024-01-31 17:39:47,664 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:39:47,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7736 conditions, 4163 events. 2495/4163 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 29370 event pairs, 443 based on Foata normal form. 0/4083 useless extension candidates. Maximal degree in co-relation 7733. Up to 2779 conditions per place. [2024-01-31 17:39:47,684 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 37 selfloop transitions, 2 changer transitions 2/62 dead transitions. [2024-01-31 17:39:47,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 220 flow [2024-01-31 17:39:47,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:39:47,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:39:47,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-01-31 17:39:47,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7647058823529411 [2024-01-31 17:39:47,689 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 98 flow. Second operand 3 states and 117 transitions. [2024-01-31 17:39:47,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 220 flow [2024-01-31 17:39:47,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 62 transitions, 220 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:39:47,696 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 98 flow [2024-01-31 17:39:47,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=56, PETRI_TRANSITIONS=43} [2024-01-31 17:39:47,697 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2024-01-31 17:39:47,697 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 98 flow [2024-01-31 17:39:47,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:39:47,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:47,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:39:47,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:39:47,698 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 17:39:47,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:47,700 INFO L85 PathProgramCache]: Analyzing trace with hash 20709465, now seen corresponding path program 1 times [2024-01-31 17:39:47,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:47,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063649477] [2024-01-31 17:39:47,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:47,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:47,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:39:47,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:47,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063649477] [2024-01-31 17:39:47,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063649477] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:47,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:47,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:39:47,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290947548] [2024-01-31 17:39:47,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:47,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:39:47,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:47,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:39:47,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:39:47,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-01-31 17:39:47,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:39:47,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:47,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-01-31 17:39:47,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:48,289 INFO L124 PetriNetUnfolderBase]: 3311/5175 cut-off events. [2024-01-31 17:39:48,289 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-01-31 17:39:48,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10168 conditions, 5175 events. 3311/5175 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 34542 event pairs, 2495 based on Foata normal form. 0/4905 useless extension candidates. Maximal degree in co-relation 10164. Up to 3465 conditions per place. [2024-01-31 17:39:48,315 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 33 selfloop transitions, 1 changer transitions 1/52 dead transitions. [2024-01-31 17:39:48,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 52 transitions, 188 flow [2024-01-31 17:39:48,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:39:48,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:39:48,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-01-31 17:39:48,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2024-01-31 17:39:48,317 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 99 transitions. [2024-01-31 17:39:48,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 52 transitions, 188 flow [2024-01-31 17:39:48,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 182 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:39:48,318 INFO L231 Difference]: Finished difference. Result has 54 places, 41 transitions, 92 flow [2024-01-31 17:39:48,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=54, PETRI_TRANSITIONS=41} [2024-01-31 17:39:48,319 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -5 predicate places. [2024-01-31 17:39:48,319 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 41 transitions, 92 flow [2024-01-31 17:39:48,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:39:48,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:48,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:39:48,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:39:48,320 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 17:39:48,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:48,320 INFO L85 PathProgramCache]: Analyzing trace with hash 641993821, now seen corresponding path program 1 times [2024-01-31 17:39:48,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:48,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909295706] [2024-01-31 17:39:48,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:48,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:48,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:48,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:39:48,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:48,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909295706] [2024-01-31 17:39:48,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909295706] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:48,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:48,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:39:48,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280534957] [2024-01-31 17:39:48,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:48,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:39:48,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:48,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:39:48,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:39:48,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-01-31 17:39:48,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:39:48,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:48,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-01-31 17:39:48,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:52,109 INFO L124 PetriNetUnfolderBase]: 34480/49204 cut-off events. [2024-01-31 17:39:52,109 INFO L125 PetriNetUnfolderBase]: For 1127/1127 co-relation queries the response was YES. [2024-01-31 17:39:52,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96906 conditions, 49204 events. 34480/49204 cut-off events. For 1127/1127 co-relation queries the response was YES. Maximal size of possible extension queue 2030. Compared 346405 event pairs, 10768 based on Foata normal form. 1132/50068 useless extension candidates. Maximal degree in co-relation 96902. Up to 18694 conditions per place. [2024-01-31 17:39:52,355 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 49 selfloop transitions, 8 changer transitions 67/134 dead transitions. [2024-01-31 17:39:52,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 134 transitions, 532 flow [2024-01-31 17:39:52,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:39:52,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:39:52,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2024-01-31 17:39:52,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6274509803921569 [2024-01-31 17:39:52,358 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 92 flow. Second operand 7 states and 224 transitions. [2024-01-31 17:39:52,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 134 transitions, 532 flow [2024-01-31 17:39:52,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 134 transitions, 530 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:39:52,622 INFO L231 Difference]: Finished difference. Result has 64 places, 48 transitions, 189 flow [2024-01-31 17:39:52,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=189, PETRI_PLACES=64, PETRI_TRANSITIONS=48} [2024-01-31 17:39:52,623 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 5 predicate places. [2024-01-31 17:39:52,624 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 48 transitions, 189 flow [2024-01-31 17:39:52,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:39:52,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:52,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:39:52,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:39:52,625 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 17:39:52,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:52,625 INFO L85 PathProgramCache]: Analyzing trace with hash -294875620, now seen corresponding path program 1 times [2024-01-31 17:39:52,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:52,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108109729] [2024-01-31 17:39:52,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:52,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:52,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:39:52,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:52,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108109729] [2024-01-31 17:39:52,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108109729] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:52,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:52,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:39:52,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071211068] [2024-01-31 17:39:52,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:52,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:39:52,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:52,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:39:52,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:39:52,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-01-31 17:39:52,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 48 transitions, 189 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:39:52,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:52,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-01-31 17:39:52,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:56,640 INFO L124 PetriNetUnfolderBase]: 32100/45962 cut-off events. [2024-01-31 17:39:56,640 INFO L125 PetriNetUnfolderBase]: For 51515/51540 co-relation queries the response was YES. [2024-01-31 17:39:56,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132121 conditions, 45962 events. 32100/45962 cut-off events. For 51515/51540 co-relation queries the response was YES. Maximal size of possible extension queue 1907. Compared 321917 event pairs, 4274 based on Foata normal form. 1083/47003 useless extension candidates. Maximal degree in co-relation 132112. Up to 17421 conditions per place. [2024-01-31 17:39:57,016 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 67 selfloop transitions, 12 changer transitions 100/189 dead transitions. [2024-01-31 17:39:57,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 189 transitions, 1166 flow [2024-01-31 17:39:57,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:39:57,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:39:57,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2024-01-31 17:39:57,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-01-31 17:39:57,018 INFO L175 Difference]: Start difference. First operand has 64 places, 48 transitions, 189 flow. Second operand 10 states and 306 transitions. [2024-01-31 17:39:57,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 189 transitions, 1166 flow [2024-01-31 17:39:57,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 189 transitions, 1086 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:39:57,063 INFO L231 Difference]: Finished difference. Result has 76 places, 56 transitions, 311 flow [2024-01-31 17:39:57,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=311, PETRI_PLACES=76, PETRI_TRANSITIONS=56} [2024-01-31 17:39:57,064 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 17 predicate places. [2024-01-31 17:39:57,064 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 56 transitions, 311 flow [2024-01-31 17:39:57,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:39:57,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:57,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:39:57,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:39:57,065 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 17:39:57,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:57,065 INFO L85 PathProgramCache]: Analyzing trace with hash 906954076, now seen corresponding path program 1 times [2024-01-31 17:39:57,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:57,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374546805] [2024-01-31 17:39:57,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:57,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:57,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:39:57,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:57,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374546805] [2024-01-31 17:39:57,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374546805] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:57,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:57,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:39:57,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947211263] [2024-01-31 17:39:57,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:57,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:39:57,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:57,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:39:57,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:39:57,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-01-31 17:39:57,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 56 transitions, 311 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:39:57,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:57,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-01-31 17:39:57,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:40:00,938 INFO L124 PetriNetUnfolderBase]: 30312/43781 cut-off events. [2024-01-31 17:40:00,939 INFO L125 PetriNetUnfolderBase]: For 122987/123035 co-relation queries the response was YES. [2024-01-31 17:40:01,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144709 conditions, 43781 events. 30312/43781 cut-off events. For 122987/123035 co-relation queries the response was YES. Maximal size of possible extension queue 1815. Compared 310404 event pairs, 2293 based on Foata normal form. 948/44669 useless extension candidates. Maximal degree in co-relation 144692. Up to 16424 conditions per place. [2024-01-31 17:40:01,246 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 72 selfloop transitions, 18 changer transitions 94/194 dead transitions. [2024-01-31 17:40:01,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 194 transitions, 1422 flow [2024-01-31 17:40:01,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:40:01,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:40:01,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 298 transitions. [2024-01-31 17:40:01,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5843137254901961 [2024-01-31 17:40:01,248 INFO L175 Difference]: Start difference. First operand has 76 places, 56 transitions, 311 flow. Second operand 10 states and 298 transitions. [2024-01-31 17:40:01,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 194 transitions, 1422 flow [2024-01-31 17:40:01,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 194 transitions, 1394 flow, removed 14 selfloop flow, removed 0 redundant places. [2024-01-31 17:40:01,881 INFO L231 Difference]: Finished difference. Result has 88 places, 68 transitions, 529 flow [2024-01-31 17:40:01,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=529, PETRI_PLACES=88, PETRI_TRANSITIONS=68} [2024-01-31 17:40:01,882 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 29 predicate places. [2024-01-31 17:40:01,883 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 68 transitions, 529 flow [2024-01-31 17:40:01,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:40:01,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:40:01,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:40:01,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:40:01,883 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 17:40:01,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:40:01,884 INFO L85 PathProgramCache]: Analyzing trace with hash 923152219, now seen corresponding path program 1 times [2024-01-31 17:40:01,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:40:01,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245680603] [2024-01-31 17:40:01,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:40:01,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:40:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:40:02,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:40:02,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:40:02,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245680603] [2024-01-31 17:40:02,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245680603] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:40:02,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:40:02,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:40:02,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12366379] [2024-01-31 17:40:02,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:40:02,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:40:02,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:40:02,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:40:02,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:40:02,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-01-31 17:40:02,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 68 transitions, 529 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 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 17:40:02,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:40:02,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-01-31 17:40:02,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:40:05,996 INFO L124 PetriNetUnfolderBase]: 28233/40590 cut-off events. [2024-01-31 17:40:05,996 INFO L125 PetriNetUnfolderBase]: For 185323/185355 co-relation queries the response was YES. [2024-01-31 17:40:06,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151383 conditions, 40590 events. 28233/40590 cut-off events. For 185323/185355 co-relation queries the response was YES. Maximal size of possible extension queue 1629. Compared 279143 event pairs, 5857 based on Foata normal form. 718/41292 useless extension candidates. Maximal degree in co-relation 151357. Up to 16257 conditions per place. [2024-01-31 17:40:06,318 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 76 selfloop transitions, 31 changer transitions 84/201 dead transitions. [2024-01-31 17:40:06,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 201 transitions, 1706 flow [2024-01-31 17:40:06,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:40:06,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:40:06,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 298 transitions. [2024-01-31 17:40:06,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5843137254901961 [2024-01-31 17:40:06,323 INFO L175 Difference]: Start difference. First operand has 88 places, 68 transitions, 529 flow. Second operand 10 states and 298 transitions. [2024-01-31 17:40:06,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 201 transitions, 1706 flow [2024-01-31 17:40:07,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 201 transitions, 1642 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-01-31 17:40:07,244 INFO L231 Difference]: Finished difference. Result has 96 places, 81 transitions, 807 flow [2024-01-31 17:40:07,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=807, PETRI_PLACES=96, PETRI_TRANSITIONS=81} [2024-01-31 17:40:07,245 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 37 predicate places. [2024-01-31 17:40:07,245 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 81 transitions, 807 flow [2024-01-31 17:40:07,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 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 17:40:07,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:40:07,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:40:07,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 17:40:07,246 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 17:40:07,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:40:07,246 INFO L85 PathProgramCache]: Analyzing trace with hash -16255164, now seen corresponding path program 1 times [2024-01-31 17:40:07,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:40:07,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246912621] [2024-01-31 17:40:07,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:40:07,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:40:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:40:07,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:40:07,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:40:07,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246912621] [2024-01-31 17:40:07,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246912621] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:40:07,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:40:07,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:40:07,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116272555] [2024-01-31 17:40:07,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:40:07,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:40:07,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:40:07,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:40:07,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:40:07,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-01-31 17:40:07,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 81 transitions, 807 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:40:07,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:40:07,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-01-31 17:40:07,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:40:13,748 INFO L124 PetriNetUnfolderBase]: 38887/56613 cut-off events. [2024-01-31 17:40:13,748 INFO L125 PetriNetUnfolderBase]: For 352368/352375 co-relation queries the response was YES. [2024-01-31 17:40:14,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220780 conditions, 56613 events. 38887/56613 cut-off events. For 352368/352375 co-relation queries the response was YES. Maximal size of possible extension queue 2366. Compared 424484 event pairs, 5965 based on Foata normal form. 963/57399 useless extension candidates. Maximal degree in co-relation 220749. Up to 19553 conditions per place. [2024-01-31 17:40:14,207 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 79 selfloop transitions, 37 changer transitions 88/214 dead transitions. [2024-01-31 17:40:14,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 214 transitions, 2047 flow [2024-01-31 17:40:14,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:40:14,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:40:14,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 302 transitions. [2024-01-31 17:40:14,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.592156862745098 [2024-01-31 17:40:14,209 INFO L175 Difference]: Start difference. First operand has 96 places, 81 transitions, 807 flow. Second operand 10 states and 302 transitions. [2024-01-31 17:40:14,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 214 transitions, 2047 flow [2024-01-31 17:40:15,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 214 transitions, 1985 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-01-31 17:40:15,651 INFO L231 Difference]: Finished difference. Result has 104 places, 85 transitions, 1027 flow [2024-01-31 17:40:15,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1027, PETRI_PLACES=104, PETRI_TRANSITIONS=85} [2024-01-31 17:40:15,653 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 45 predicate places. [2024-01-31 17:40:15,654 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 85 transitions, 1027 flow [2024-01-31 17:40:15,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:40:15,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:40:15,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:40:15,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 17:40:15,655 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 17:40:15,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:40:15,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1211824454, now seen corresponding path program 1 times [2024-01-31 17:40:15,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:40:15,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484593950] [2024-01-31 17:40:15,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:40:15,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:40:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:40:15,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:40:15,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:40:15,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484593950] [2024-01-31 17:40:15,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484593950] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:40:15,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:40:15,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:40:15,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380639211] [2024-01-31 17:40:15,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:40:15,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:40:15,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:40:15,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:40:15,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:40:15,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-01-31 17:40:15,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 85 transitions, 1027 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:40:15,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:40:15,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-01-31 17:40:15,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand