./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe020_rmo.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe020_rmo.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/safe020_rmo.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe020_rmo.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 00:28:53,909 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:28:53,951 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:28:53,954 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:28:53,954 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:28:53,967 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:28:53,976 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:28:53,977 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:28:53,977 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:28:53,980 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:28:53,981 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:28:53,981 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:28:53,982 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:28:53,982 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:28:53,983 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:28:53,983 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:28:53,983 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:28:53,984 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:28:53,984 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:28:53,984 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:28:53,984 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:28:53,985 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:28:53,985 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:28:53,985 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:28:53,985 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:28:53,985 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:28:53,985 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:28:53,986 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:28:53,986 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:28:53,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:28:53,987 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:28:53,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:28:53,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:28:53,988 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:28:53,988 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:28:53,988 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:28:53,988 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:28:53,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:28:53,989 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:28:53,989 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:28:53,989 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:28:53,989 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:28:53,989 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:28:53,989 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 00:28:54,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:28:54,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:28:54,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:28:54,221 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:28:54,222 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:28:54,222 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe020_rmo.yml/witness.yml [2024-06-28 00:28:54,327 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:28:54,327 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:28:54,328 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_rmo.i [2024-06-28 00:28:55,256 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:28:55,467 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:28:55,468 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_rmo.i [2024-06-28 00:28:55,478 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9811e848/e191f21ff2f44878b7edc78fb3a14616/FLAGb6ec97697 [2024-06-28 00:28:55,488 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9811e848/e191f21ff2f44878b7edc78fb3a14616 [2024-06-28 00:28:55,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:28:55,489 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:28:55,490 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:28:55,490 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:28:55,495 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:28:55,496 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:28:54" (1/2) ... [2024-06-28 00:28:55,496 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31989850 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:28:55, skipping insertion in model container [2024-06-28 00:28:55,497 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:28:54" (1/2) ... [2024-06-28 00:28:55,505 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7b9f488a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:28:55, skipping insertion in model container [2024-06-28 00:28:55,505 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:28:55" (2/2) ... [2024-06-28 00:28:55,505 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31989850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:28:55, skipping insertion in model container [2024-06-28 00:28:55,505 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:28:55" (2/2) ... [2024-06-28 00:28:55,505 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:28:55,527 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:28:55,529 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] ! multithreaded || (((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) [2024-06-28 00:28:55,530 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] ! multithreaded || (((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) [2024-06-28 00:28:55,530 INFO L97 edCorrectnessWitness]: Location invariant before [L852-L852] ! multithreaded || (((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) [2024-06-28 00:28:55,530 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:28:55,530 INFO L106 edCorrectnessWitness]: ghost_update [L850-L850] multithreaded = 1; [2024-06-28 00:28:55,564 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:28:55,894 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:28:55,902 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:28:55,992 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:28:56,021 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:28:56,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:28:56 WrapperNode [2024-06-28 00:28:56,023 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:28:56,024 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:28:56,024 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:28:56,024 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:28:56,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:28:56" (1/1) ... [2024-06-28 00:28:56,047 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:28:56" (1/1) ... [2024-06-28 00:28:56,065 INFO L138 Inliner]: procedures = 175, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 153 [2024-06-28 00:28:56,065 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:28:56,066 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:28:56,066 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:28:56,066 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:28:56,075 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:28:56" (1/1) ... [2024-06-28 00:28:56,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:28:56" (1/1) ... [2024-06-28 00:28:56,078 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:28:56" (1/1) ... [2024-06-28 00:28:56,092 INFO L175 MemorySlicer]: Split 29 memory accesses to 2 slices as follows [2, 27]. 93 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 8 writes are split as follows [0, 8]. [2024-06-28 00:28:56,096 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:28:56" (1/1) ... [2024-06-28 00:28:56,096 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:28:56" (1/1) ... [2024-06-28 00:28:56,102 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:28:56" (1/1) ... [2024-06-28 00:28:56,104 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:28:56" (1/1) ... [2024-06-28 00:28:56,105 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:28:56" (1/1) ... [2024-06-28 00:28:56,107 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:28:56" (1/1) ... [2024-06-28 00:28:56,109 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:28:56,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:28:56,111 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:28:56,111 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:28:56,112 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:28:56" (1/1) ... [2024-06-28 00:28:56,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:28:56,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:28:56,142 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) [2024-06-28 00:28:56,157 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 [2024-06-28 00:28:56,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 00:28:56,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 00:28:56,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 00:28:56,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 00:28:56,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:28:56,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:28:56,173 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:28:56,174 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:28:56,174 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:28:56,174 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:28:56,174 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 00:28:56,174 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 00:28:56,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:28:56,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 00:28:56,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:28:56,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:28:56,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:28:56,178 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 00:28:56,318 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:28:56,320 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:28:56,636 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:28:56,637 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:28:56,870 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:28:56,870 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:28:56,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:28:56 BoogieIcfgContainer [2024-06-28 00:28:56,871 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:28:56,873 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:28:56,873 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:28:56,875 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:28:56,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:28:54" (1/4) ... [2024-06-28 00:28:56,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14130a0f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:28:56, skipping insertion in model container [2024-06-28 00:28:56,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:28:55" (2/4) ... [2024-06-28 00:28:56,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14130a0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:28:56, skipping insertion in model container [2024-06-28 00:28:56,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:28:56" (3/4) ... [2024-06-28 00:28:56,878 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14130a0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:28:56, skipping insertion in model container [2024-06-28 00:28:56,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:28:56" (4/4) ... [2024-06-28 00:28:56,879 INFO L112 eAbstractionObserver]: Analyzing ICFG safe020_rmo.i [2024-06-28 00:28:56,892 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:28:56,893 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 00:28:56,893 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:28:56,941 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:28:56,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 42 transitions, 96 flow [2024-06-28 00:28:56,986 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2024-06-28 00:28:56,986 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:28:56,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 39 events. 0/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 00:28:56,988 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 42 transitions, 96 flow [2024-06-28 00:28:56,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2024-06-28 00:28:56,996 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:28:57,000 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;@14877591, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:28:57,001 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 00:28:57,003 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:28:57,003 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 00:28:57,003 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:28:57,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:57,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:28:57,004 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:28:57,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:57,008 INFO L85 PathProgramCache]: Analyzing trace with hash 653693013, now seen corresponding path program 1 times [2024-06-28 00:28:57,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:57,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865835486] [2024-06-28 00:28:57,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:57,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:57,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:57,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:57,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865835486] [2024-06-28 00:28:57,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865835486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:57,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:57,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:28:57,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86250670] [2024-06-28 00:28:57,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:57,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:28:57,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:57,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:28:57,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:28:57,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-28 00:28:57,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-06-28 00:28:57,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:57,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-28 00:28:57,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:57,579 INFO L124 PetriNetUnfolderBase]: 354/665 cut-off events. [2024-06-28 00:28:57,579 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-06-28 00:28:57,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1273 conditions, 665 events. 354/665 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3633 event pairs, 186 based on Foata normal form. 1/626 useless extension candidates. Maximal degree in co-relation 1261. Up to 561 conditions per place. [2024-06-28 00:28:57,588 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 30 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-28 00:28:57,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 173 flow [2024-06-28 00:28:57,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:28:57,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:28:57,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-06-28 00:28:57,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.626984126984127 [2024-06-28 00:28:57,599 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 3 states and 79 transitions. [2024-06-28 00:28:57,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 173 flow [2024-06-28 00:28:57,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 00:28:57,605 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 102 flow [2024-06-28 00:28:57,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-06-28 00:28:57,610 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-06-28 00:28:57,610 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 102 flow [2024-06-28 00:28:57,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-06-28 00:28:57,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:57,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:57,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:28:57,611 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:28:57,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:57,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1043671587, now seen corresponding path program 1 times [2024-06-28 00:28:57,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:57,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639313986] [2024-06-28 00:28:57,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:57,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:58,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:58,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:58,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639313986] [2024-06-28 00:28:58,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639313986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:58,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:58,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:28:58,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274999260] [2024-06-28 00:28:58,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:58,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:28:58,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:58,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:28:58,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:28:58,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-28 00:28:58,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2024-06-28 00:28:58,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:58,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-28 00:28:58,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:58,158 INFO L124 PetriNetUnfolderBase]: 345/634 cut-off events. [2024-06-28 00:28:58,159 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-06-28 00:28:58,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1447 conditions, 634 events. 345/634 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3518 event pairs, 117 based on Foata normal form. 6/614 useless extension candidates. Maximal degree in co-relation 1435. Up to 508 conditions per place. [2024-06-28 00:28:58,162 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 27 selfloop transitions, 5 changer transitions 0/43 dead transitions. [2024-06-28 00:28:58,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 184 flow [2024-06-28 00:28:58,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:28:58,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:28:58,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-06-28 00:28:58,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-06-28 00:28:58,164 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 102 flow. Second operand 3 states and 75 transitions. [2024-06-28 00:28:58,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 184 flow [2024-06-28 00:28:58,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 43 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:28:58,166 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 125 flow [2024-06-28 00:28:58,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-06-28 00:28:58,167 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-06-28 00:28:58,167 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 125 flow [2024-06-28 00:28:58,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2024-06-28 00:28:58,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:58,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:58,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:28:58,168 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:28:58,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:58,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1121884732, now seen corresponding path program 1 times [2024-06-28 00:28:58,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:58,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443902559] [2024-06-28 00:28:58,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:58,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:58,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:58,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:58,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443902559] [2024-06-28 00:28:58,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443902559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:58,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:58,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:28:58,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092982319] [2024-06-28 00:28:58,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:58,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:28:58,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:58,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:28:58,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:28:58,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-28 00:28:58,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-06-28 00:28:58,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:58,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-28 00:28:58,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:58,425 INFO L124 PetriNetUnfolderBase]: 340/650 cut-off events. [2024-06-28 00:28:58,425 INFO L125 PetriNetUnfolderBase]: For 266/266 co-relation queries the response was YES. [2024-06-28 00:28:58,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1588 conditions, 650 events. 340/650 cut-off events. For 266/266 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3540 event pairs, 146 based on Foata normal form. 2/632 useless extension candidates. Maximal degree in co-relation 1574. Up to 500 conditions per place. [2024-06-28 00:28:58,429 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 39 selfloop transitions, 9 changer transitions 0/59 dead transitions. [2024-06-28 00:28:58,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 291 flow [2024-06-28 00:28:58,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:28:58,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:28:58,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-06-28 00:28:58,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-06-28 00:28:58,434 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 125 flow. Second operand 4 states and 102 transitions. [2024-06-28 00:28:58,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 291 flow [2024-06-28 00:28:58,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 59 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:28:58,437 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 174 flow [2024-06-28 00:28:58,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2024-06-28 00:28:58,438 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-06-28 00:28:58,438 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 174 flow [2024-06-28 00:28:58,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-06-28 00:28:58,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:58,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:58,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:28:58,439 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:28:58,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:58,439 INFO L85 PathProgramCache]: Analyzing trace with hash 433496244, now seen corresponding path program 1 times [2024-06-28 00:28:58,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:58,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645533164] [2024-06-28 00:28:58,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:58,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:58,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:58,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:58,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645533164] [2024-06-28 00:28:58,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645533164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:58,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:58,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:28:58,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381123085] [2024-06-28 00:28:58,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:58,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:28:58,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:58,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:28:58,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:28:58,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-28 00:28:58,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:58,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:58,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-28 00:28:58,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:58,832 INFO L124 PetriNetUnfolderBase]: 332/641 cut-off events. [2024-06-28 00:28:58,832 INFO L125 PetriNetUnfolderBase]: For 565/565 co-relation queries the response was YES. [2024-06-28 00:28:58,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1736 conditions, 641 events. 332/641 cut-off events. For 565/565 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3421 event pairs, 134 based on Foata normal form. 4/628 useless extension candidates. Maximal degree in co-relation 1720. Up to 494 conditions per place. [2024-06-28 00:28:58,841 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 38 selfloop transitions, 8 changer transitions 0/57 dead transitions. [2024-06-28 00:28:58,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 302 flow [2024-06-28 00:28:58,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:28:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:28:58,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-06-28 00:28:58,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-06-28 00:28:58,843 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 174 flow. Second operand 4 states and 100 transitions. [2024-06-28 00:28:58,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 57 transitions, 302 flow [2024-06-28 00:28:58,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 296 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-06-28 00:28:58,849 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 193 flow [2024-06-28 00:28:58,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2024-06-28 00:28:58,851 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2024-06-28 00:28:58,851 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 193 flow [2024-06-28 00:28:58,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:58,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:58,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:58,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:28:58,852 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:28:58,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:58,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1164991326, now seen corresponding path program 1 times [2024-06-28 00:28:58,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:58,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102881189] [2024-06-28 00:28:58,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:58,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:59,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:59,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:59,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102881189] [2024-06-28 00:28:59,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102881189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:59,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:59,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:28:59,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547283851] [2024-06-28 00:28:59,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:59,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:28:59,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:59,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:28:59,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:28:59,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-28 00:28:59,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 193 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:59,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:59,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-28 00:28:59,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:59,222 INFO L124 PetriNetUnfolderBase]: 558/1043 cut-off events. [2024-06-28 00:28:59,222 INFO L125 PetriNetUnfolderBase]: For 1425/1425 co-relation queries the response was YES. [2024-06-28 00:28:59,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2946 conditions, 1043 events. 558/1043 cut-off events. For 1425/1425 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6281 event pairs, 112 based on Foata normal form. 16/1035 useless extension candidates. Maximal degree in co-relation 2927. Up to 443 conditions per place. [2024-06-28 00:28:59,228 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 49 selfloop transitions, 17 changer transitions 0/77 dead transitions. [2024-06-28 00:28:59,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 453 flow [2024-06-28 00:28:59,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:28:59,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:28:59,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-06-28 00:28:59,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-06-28 00:28:59,229 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 193 flow. Second operand 5 states and 130 transitions. [2024-06-28 00:28:59,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 453 flow [2024-06-28 00:28:59,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 77 transitions, 436 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 00:28:59,237 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 303 flow [2024-06-28 00:28:59,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=303, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-28 00:28:59,239 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2024-06-28 00:28:59,239 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 303 flow [2024-06-28 00:28:59,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:59,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:59,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:59,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:28:59,240 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:28:59,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:59,240 INFO L85 PathProgramCache]: Analyzing trace with hash 593065530, now seen corresponding path program 2 times [2024-06-28 00:28:59,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:59,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173536964] [2024-06-28 00:28:59,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:59,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:59,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:59,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:59,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173536964] [2024-06-28 00:28:59,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173536964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:59,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:59,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:28:59,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681484579] [2024-06-28 00:28:59,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:59,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:28:59,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:59,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:28:59,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:28:59,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-28 00:28:59,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 303 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:59,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:59,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-28 00:28:59,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:59,687 INFO L124 PetriNetUnfolderBase]: 597/1096 cut-off events. [2024-06-28 00:28:59,687 INFO L125 PetriNetUnfolderBase]: For 2740/2740 co-relation queries the response was YES. [2024-06-28 00:28:59,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3808 conditions, 1096 events. 597/1096 cut-off events. For 2740/2740 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6777 event pairs, 313 based on Foata normal form. 10/1060 useless extension candidates. Maximal degree in co-relation 3786. Up to 783 conditions per place. [2024-06-28 00:28:59,695 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 45 selfloop transitions, 16 changer transitions 0/72 dead transitions. [2024-06-28 00:28:59,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 72 transitions, 515 flow [2024-06-28 00:28:59,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:28:59,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:28:59,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-28 00:28:59,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-28 00:28:59,696 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 303 flow. Second operand 5 states and 115 transitions. [2024-06-28 00:28:59,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 72 transitions, 515 flow [2024-06-28 00:28:59,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 72 transitions, 497 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-06-28 00:28:59,702 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 381 flow [2024-06-28 00:28:59,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=381, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2024-06-28 00:28:59,703 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2024-06-28 00:28:59,703 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 381 flow [2024-06-28 00:28:59,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:59,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:59,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:59,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:28:59,704 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:28:59,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:59,704 INFO L85 PathProgramCache]: Analyzing trace with hash 695971250, now seen corresponding path program 1 times [2024-06-28 00:28:59,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:59,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338931452] [2024-06-28 00:28:59,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:59,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:00,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:00,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:00,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338931452] [2024-06-28 00:29:00,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338931452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:00,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:00,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:29:00,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052672541] [2024-06-28 00:29:00,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:00,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:29:00,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:00,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:29:00,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:29:00,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-06-28 00:29:00,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 381 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 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) [2024-06-28 00:29:00,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:00,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-06-28 00:29:00,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:00,347 INFO L124 PetriNetUnfolderBase]: 608/1189 cut-off events. [2024-06-28 00:29:00,347 INFO L125 PetriNetUnfolderBase]: For 3525/3525 co-relation queries the response was YES. [2024-06-28 00:29:00,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4172 conditions, 1189 events. 608/1189 cut-off events. For 3525/3525 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 7507 event pairs, 71 based on Foata normal form. 26/1191 useless extension candidates. Maximal degree in co-relation 4145. Up to 514 conditions per place. [2024-06-28 00:29:00,355 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 52 selfloop transitions, 17 changer transitions 0/79 dead transitions. [2024-06-28 00:29:00,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 79 transitions, 608 flow [2024-06-28 00:29:00,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:29:00,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:29:00,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-28 00:29:00,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-06-28 00:29:00,357 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 381 flow. Second operand 5 states and 119 transitions. [2024-06-28 00:29:00,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 79 transitions, 608 flow [2024-06-28 00:29:00,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 79 transitions, 599 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-28 00:29:00,363 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 443 flow [2024-06-28 00:29:00,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=443, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-06-28 00:29:00,364 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2024-06-28 00:29:00,364 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 443 flow [2024-06-28 00:29:00,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 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) [2024-06-28 00:29:00,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:00,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:00,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:29:00,365 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:00,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:00,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1461871536, now seen corresponding path program 2 times [2024-06-28 00:29:00,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:00,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367093243] [2024-06-28 00:29:00,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:00,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:00,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:00,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:00,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367093243] [2024-06-28 00:29:00,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367093243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:00,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:00,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:29:00,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871670651] [2024-06-28 00:29:00,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:00,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:29:00,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:00,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:29:00,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:29:00,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-28 00:29:00,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 443 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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) [2024-06-28 00:29:00,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:00,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-28 00:29:00,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:01,096 INFO L124 PetriNetUnfolderBase]: 708/1404 cut-off events. [2024-06-28 00:29:01,096 INFO L125 PetriNetUnfolderBase]: For 4969/4969 co-relation queries the response was YES. [2024-06-28 00:29:01,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4992 conditions, 1404 events. 708/1404 cut-off events. For 4969/4969 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9305 event pairs, 169 based on Foata normal form. 28/1401 useless extension candidates. Maximal degree in co-relation 4964. Up to 744 conditions per place. [2024-06-28 00:29:01,104 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 50 selfloop transitions, 31 changer transitions 0/92 dead transitions. [2024-06-28 00:29:01,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 92 transitions, 758 flow [2024-06-28 00:29:01,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:29:01,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:29:01,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 00:29:01,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2024-06-28 00:29:01,106 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 443 flow. Second operand 6 states and 142 transitions. [2024-06-28 00:29:01,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 92 transitions, 758 flow [2024-06-28 00:29:01,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 92 transitions, 720 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 00:29:01,114 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 606 flow [2024-06-28 00:29:01,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=606, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2024-06-28 00:29:01,115 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 27 predicate places. [2024-06-28 00:29:01,115 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 606 flow [2024-06-28 00:29:01,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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) [2024-06-28 00:29:01,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:01,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:01,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:29:01,116 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:01,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:01,116 INFO L85 PathProgramCache]: Analyzing trace with hash 230475772, now seen corresponding path program 3 times [2024-06-28 00:29:01,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:01,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594913479] [2024-06-28 00:29:01,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:01,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:01,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:01,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:01,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594913479] [2024-06-28 00:29:01,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594913479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:01,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:01,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:29:01,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886040527] [2024-06-28 00:29:01,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:01,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:29:01,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:01,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:29:01,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:29:01,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-28 00:29:01,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 606 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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) [2024-06-28 00:29:01,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:01,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-28 00:29:01,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:01,700 INFO L124 PetriNetUnfolderBase]: 780/1658 cut-off events. [2024-06-28 00:29:01,701 INFO L125 PetriNetUnfolderBase]: For 6287/6287 co-relation queries the response was YES. [2024-06-28 00:29:01,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5829 conditions, 1658 events. 780/1658 cut-off events. For 6287/6287 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 11974 event pairs, 210 based on Foata normal form. 20/1645 useless extension candidates. Maximal degree in co-relation 5800. Up to 550 conditions per place. [2024-06-28 00:29:01,711 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 54 selfloop transitions, 22 changer transitions 0/87 dead transitions. [2024-06-28 00:29:01,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 87 transitions, 823 flow [2024-06-28 00:29:01,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:29:01,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:29:01,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-06-28 00:29:01,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5523809523809524 [2024-06-28 00:29:01,713 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 606 flow. Second operand 5 states and 116 transitions. [2024-06-28 00:29:01,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 87 transitions, 823 flow [2024-06-28 00:29:01,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 87 transitions, 808 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-28 00:29:01,721 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 679 flow [2024-06-28 00:29:01,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=679, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2024-06-28 00:29:01,722 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2024-06-28 00:29:01,722 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 679 flow [2024-06-28 00:29:01,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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) [2024-06-28 00:29:01,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:01,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:01,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:29:01,722 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:01,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:01,723 INFO L85 PathProgramCache]: Analyzing trace with hash 118209596, now seen corresponding path program 1 times [2024-06-28 00:29:01,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:01,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034739850] [2024-06-28 00:29:01,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:01,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:01,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:01,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:01,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034739850] [2024-06-28 00:29:01,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034739850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:01,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:01,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:29:01,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33844693] [2024-06-28 00:29:01,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:01,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:29:01,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:01,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:29:01,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:29:01,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-28 00:29:01,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 679 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 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) [2024-06-28 00:29:01,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:01,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-28 00:29:01,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:02,186 INFO L124 PetriNetUnfolderBase]: 765/1633 cut-off events. [2024-06-28 00:29:02,186 INFO L125 PetriNetUnfolderBase]: For 7876/7876 co-relation queries the response was YES. [2024-06-28 00:29:02,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6030 conditions, 1633 events. 765/1633 cut-off events. For 7876/7876 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 11678 event pairs, 267 based on Foata normal form. 3/1598 useless extension candidates. Maximal degree in co-relation 5998. Up to 1130 conditions per place. [2024-06-28 00:29:02,197 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 72 selfloop transitions, 21 changer transitions 0/104 dead transitions. [2024-06-28 00:29:02,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 104 transitions, 1121 flow [2024-06-28 00:29:02,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:29:02,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:29:02,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-06-28 00:29:02,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2024-06-28 00:29:02,199 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 679 flow. Second operand 5 states and 122 transitions. [2024-06-28 00:29:02,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 104 transitions, 1121 flow [2024-06-28 00:29:02,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 104 transitions, 1071 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 00:29:02,210 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 831 flow [2024-06-28 00:29:02,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=831, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2024-06-28 00:29:02,211 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 35 predicate places. [2024-06-28 00:29:02,211 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 831 flow [2024-06-28 00:29:02,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 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) [2024-06-28 00:29:02,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:02,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:02,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:29:02,212 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:02,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:02,213 INFO L85 PathProgramCache]: Analyzing trace with hash 696514720, now seen corresponding path program 1 times [2024-06-28 00:29:02,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:02,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103889667] [2024-06-28 00:29:02,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:02,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:02,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:02,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:02,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103889667] [2024-06-28 00:29:02,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103889667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:02,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:02,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:29:02,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94443644] [2024-06-28 00:29:02,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:02,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:29:02,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:02,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:29:02,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:29:02,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-28 00:29:02,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 831 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 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) [2024-06-28 00:29:02,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:02,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-28 00:29:02,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:02,649 INFO L124 PetriNetUnfolderBase]: 721/1508 cut-off events. [2024-06-28 00:29:02,649 INFO L125 PetriNetUnfolderBase]: For 7488/7488 co-relation queries the response was YES. [2024-06-28 00:29:02,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5737 conditions, 1508 events. 721/1508 cut-off events. For 7488/7488 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 10530 event pairs, 209 based on Foata normal form. 6/1487 useless extension candidates. Maximal degree in co-relation 5703. Up to 1119 conditions per place. [2024-06-28 00:29:02,659 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 66 selfloop transitions, 7 changer transitions 3/87 dead transitions. [2024-06-28 00:29:02,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 87 transitions, 1031 flow [2024-06-28 00:29:02,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:29:02,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:29:02,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-06-28 00:29:02,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5793650793650794 [2024-06-28 00:29:02,661 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 831 flow. Second operand 3 states and 73 transitions. [2024-06-28 00:29:02,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 87 transitions, 1031 flow [2024-06-28 00:29:02,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 87 transitions, 994 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-28 00:29:02,671 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 761 flow [2024-06-28 00:29:02,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=761, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2024-06-28 00:29:02,671 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 37 predicate places. [2024-06-28 00:29:02,671 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 761 flow [2024-06-28 00:29:02,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 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) [2024-06-28 00:29:02,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:02,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:02,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:29:02,672 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:02,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:02,673 INFO L85 PathProgramCache]: Analyzing trace with hash 2045521490, now seen corresponding path program 1 times [2024-06-28 00:29:02,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:02,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125674720] [2024-06-28 00:29:02,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:02,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:02,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:02,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:02,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125674720] [2024-06-28 00:29:02,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125674720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:02,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:02,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:29:02,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787950222] [2024-06-28 00:29:02,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:02,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:29:02,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:02,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:29:02,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:29:02,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-28 00:29:02,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 761 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-06-28 00:29:02,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:02,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-28 00:29:02,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:03,240 INFO L124 PetriNetUnfolderBase]: 633/1330 cut-off events. [2024-06-28 00:29:03,240 INFO L125 PetriNetUnfolderBase]: For 6926/6926 co-relation queries the response was YES. [2024-06-28 00:29:03,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5179 conditions, 1330 events. 633/1330 cut-off events. For 6926/6926 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 8861 event pairs, 194 based on Foata normal form. 6/1309 useless extension candidates. Maximal degree in co-relation 5143. Up to 902 conditions per place. [2024-06-28 00:29:03,249 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 75 selfloop transitions, 24 changer transitions 2/112 dead transitions. [2024-06-28 00:29:03,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 112 transitions, 1189 flow [2024-06-28 00:29:03,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:29:03,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:29:03,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 00:29:03,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5793650793650794 [2024-06-28 00:29:03,250 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 761 flow. Second operand 6 states and 146 transitions. [2024-06-28 00:29:03,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 112 transitions, 1189 flow [2024-06-28 00:29:03,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 112 transitions, 1175 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:29:03,295 INFO L231 Difference]: Finished difference. Result has 84 places, 78 transitions, 857 flow [2024-06-28 00:29:03,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=857, PETRI_PLACES=84, PETRI_TRANSITIONS=78} [2024-06-28 00:29:03,296 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 41 predicate places. [2024-06-28 00:29:03,296 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 78 transitions, 857 flow [2024-06-28 00:29:03,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-06-28 00:29:03,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:03,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:03,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:29:03,297 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:03,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:03,298 INFO L85 PathProgramCache]: Analyzing trace with hash -630468100, now seen corresponding path program 2 times [2024-06-28 00:29:03,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:03,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235870626] [2024-06-28 00:29:03,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:03,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:03,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:03,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:03,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235870626] [2024-06-28 00:29:03,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235870626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:03,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:03,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:29:03,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812893611] [2024-06-28 00:29:03,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:03,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:29:03,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:03,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:29:03,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:29:03,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-28 00:29:03,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 857 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-06-28 00:29:03,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:03,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-28 00:29:03,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:03,840 INFO L124 PetriNetUnfolderBase]: 624/1308 cut-off events. [2024-06-28 00:29:03,840 INFO L125 PetriNetUnfolderBase]: For 7422/7422 co-relation queries the response was YES. [2024-06-28 00:29:03,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5257 conditions, 1308 events. 624/1308 cut-off events. For 7422/7422 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8663 event pairs, 197 based on Foata normal form. 2/1282 useless extension candidates. Maximal degree in co-relation 5220. Up to 892 conditions per place. [2024-06-28 00:29:03,851 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 68 selfloop transitions, 23 changer transitions 1/103 dead transitions. [2024-06-28 00:29:03,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 103 transitions, 1167 flow [2024-06-28 00:29:03,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:29:03,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:29:03,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-06-28 00:29:03,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2024-06-28 00:29:03,852 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 857 flow. Second operand 5 states and 122 transitions. [2024-06-28 00:29:03,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 103 transitions, 1167 flow [2024-06-28 00:29:03,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 103 transitions, 1121 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 00:29:03,862 INFO L231 Difference]: Finished difference. Result has 86 places, 82 transitions, 935 flow [2024-06-28 00:29:03,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=935, PETRI_PLACES=86, PETRI_TRANSITIONS=82} [2024-06-28 00:29:03,863 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 43 predicate places. [2024-06-28 00:29:03,863 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 82 transitions, 935 flow [2024-06-28 00:29:03,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-06-28 00:29:03,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:03,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:03,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:29:03,864 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:03,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:03,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1300945059, now seen corresponding path program 1 times [2024-06-28 00:29:03,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:03,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052488062] [2024-06-28 00:29:03,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:03,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:04,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:04,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:04,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052488062] [2024-06-28 00:29:04,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052488062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:04,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:04,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:29:04,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752425216] [2024-06-28 00:29:04,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:04,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:29:04,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:04,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:29:04,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:29:04,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-28 00:29:04,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 82 transitions, 935 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-06-28 00:29:04,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:04,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-28 00:29:04,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:04,276 INFO L124 PetriNetUnfolderBase]: 567/1198 cut-off events. [2024-06-28 00:29:04,276 INFO L125 PetriNetUnfolderBase]: For 7945/7945 co-relation queries the response was YES. [2024-06-28 00:29:04,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4770 conditions, 1198 events. 567/1198 cut-off events. For 7945/7945 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7922 event pairs, 113 based on Foata normal form. 30/1205 useless extension candidates. Maximal degree in co-relation 4731. Up to 561 conditions per place. [2024-06-28 00:29:04,283 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 61 selfloop transitions, 17 changer transitions 17/106 dead transitions. [2024-06-28 00:29:04,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 106 transitions, 1206 flow [2024-06-28 00:29:04,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:29:04,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:29:04,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-28 00:29:04,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-06-28 00:29:04,284 INFO L175 Difference]: Start difference. First operand has 86 places, 82 transitions, 935 flow. Second operand 5 states and 125 transitions. [2024-06-28 00:29:04,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 106 transitions, 1206 flow [2024-06-28 00:29:04,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 106 transitions, 1154 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-06-28 00:29:04,294 INFO L231 Difference]: Finished difference. Result has 91 places, 69 transitions, 757 flow [2024-06-28 00:29:04,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=757, PETRI_PLACES=91, PETRI_TRANSITIONS=69} [2024-06-28 00:29:04,295 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2024-06-28 00:29:04,295 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 69 transitions, 757 flow [2024-06-28 00:29:04,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-06-28 00:29:04,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:04,296 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] [2024-06-28 00:29:04,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 00:29:04,296 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:04,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:04,297 INFO L85 PathProgramCache]: Analyzing trace with hash -289395333, now seen corresponding path program 1 times [2024-06-28 00:29:04,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:04,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315057278] [2024-06-28 00:29:04,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:04,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:05,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:05,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:05,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315057278] [2024-06-28 00:29:05,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315057278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:05,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:05,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:29:05,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834468160] [2024-06-28 00:29:05,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:05,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:29:05,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:05,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:29:05,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:29:05,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-06-28 00:29:05,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 69 transitions, 757 flow. Second operand has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 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) [2024-06-28 00:29:05,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:05,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-06-28 00:29:05,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:05,358 INFO L124 PetriNetUnfolderBase]: 411/887 cut-off events. [2024-06-28 00:29:05,359 INFO L125 PetriNetUnfolderBase]: For 5720/5720 co-relation queries the response was YES. [2024-06-28 00:29:05,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3593 conditions, 887 events. 411/887 cut-off events. For 5720/5720 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5387 event pairs, 102 based on Foata normal form. 4/874 useless extension candidates. Maximal degree in co-relation 3550. Up to 584 conditions per place. [2024-06-28 00:29:05,363 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 59 selfloop transitions, 16 changer transitions 3/88 dead transitions. [2024-06-28 00:29:05,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 88 transitions, 957 flow [2024-06-28 00:29:05,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:29:05,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:29:05,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-06-28 00:29:05,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-06-28 00:29:05,364 INFO L175 Difference]: Start difference. First operand has 91 places, 69 transitions, 757 flow. Second operand 6 states and 128 transitions. [2024-06-28 00:29:05,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 88 transitions, 957 flow [2024-06-28 00:29:05,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 88 transitions, 837 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 00:29:05,372 INFO L231 Difference]: Finished difference. Result has 85 places, 66 transitions, 644 flow [2024-06-28 00:29:05,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=644, PETRI_PLACES=85, PETRI_TRANSITIONS=66} [2024-06-28 00:29:05,373 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2024-06-28 00:29:05,374 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 66 transitions, 644 flow [2024-06-28 00:29:05,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 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) [2024-06-28 00:29:05,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:05,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:05,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 00:29:05,374 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:05,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:05,375 INFO L85 PathProgramCache]: Analyzing trace with hash -103820936, now seen corresponding path program 1 times [2024-06-28 00:29:05,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:05,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097327300] [2024-06-28 00:29:05,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:05,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:05,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:05,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:05,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097327300] [2024-06-28 00:29:05,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097327300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:05,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:05,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:29:05,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120203394] [2024-06-28 00:29:05,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:05,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:29:05,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:05,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:29:05,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:29:05,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-28 00:29:05,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 66 transitions, 644 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-06-28 00:29:05,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:05,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-28 00:29:05,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:05,885 INFO L124 PetriNetUnfolderBase]: 402/858 cut-off events. [2024-06-28 00:29:05,886 INFO L125 PetriNetUnfolderBase]: For 4937/4937 co-relation queries the response was YES. [2024-06-28 00:29:05,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3251 conditions, 858 events. 402/858 cut-off events. For 4937/4937 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5186 event pairs, 105 based on Foata normal form. 6/849 useless extension candidates. Maximal degree in co-relation 3214. Up to 359 conditions per place. [2024-06-28 00:29:05,892 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 60 selfloop transitions, 21 changer transitions 0/92 dead transitions. [2024-06-28 00:29:05,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 92 transitions, 896 flow [2024-06-28 00:29:05,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:29:05,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:29:05,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-28 00:29:05,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-06-28 00:29:05,893 INFO L175 Difference]: Start difference. First operand has 85 places, 66 transitions, 644 flow. Second operand 6 states and 141 transitions. [2024-06-28 00:29:05,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 92 transitions, 896 flow [2024-06-28 00:29:05,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 92 transitions, 837 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 00:29:05,902 INFO L231 Difference]: Finished difference. Result has 86 places, 67 transitions, 650 flow [2024-06-28 00:29:05,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=650, PETRI_PLACES=86, PETRI_TRANSITIONS=67} [2024-06-28 00:29:05,903 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 43 predicate places. [2024-06-28 00:29:05,903 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 67 transitions, 650 flow [2024-06-28 00:29:05,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-06-28 00:29:05,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:05,903 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] [2024-06-28 00:29:05,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 00:29:05,904 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:05,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:05,904 INFO L85 PathProgramCache]: Analyzing trace with hash 562382872, now seen corresponding path program 1 times [2024-06-28 00:29:05,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:05,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956163422] [2024-06-28 00:29:05,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:05,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:06,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:06,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:06,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956163422] [2024-06-28 00:29:06,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956163422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:06,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:06,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:29:06,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748585996] [2024-06-28 00:29:06,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:06,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:29:06,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:06,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:29:06,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:29:06,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-06-28 00:29:06,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 67 transitions, 650 flow. Second operand has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 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) [2024-06-28 00:29:06,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:06,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-06-28 00:29:06,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:06,799 INFO L124 PetriNetUnfolderBase]: 666/1412 cut-off events. [2024-06-28 00:29:06,799 INFO L125 PetriNetUnfolderBase]: For 8235/8235 co-relation queries the response was YES. [2024-06-28 00:29:06,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5264 conditions, 1412 events. 666/1412 cut-off events. For 8235/8235 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9678 event pairs, 105 based on Foata normal form. 12/1408 useless extension candidates. Maximal degree in co-relation 5226. Up to 487 conditions per place. [2024-06-28 00:29:06,806 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 93 selfloop transitions, 31 changer transitions 6/140 dead transitions. [2024-06-28 00:29:06,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 140 transitions, 1294 flow [2024-06-28 00:29:06,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:29:06,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:29:06,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 270 transitions. [2024-06-28 00:29:06,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945054945054945 [2024-06-28 00:29:06,808 INFO L175 Difference]: Start difference. First operand has 86 places, 67 transitions, 650 flow. Second operand 13 states and 270 transitions. [2024-06-28 00:29:06,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 140 transitions, 1294 flow [2024-06-28 00:29:06,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 140 transitions, 1251 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 00:29:06,819 INFO L231 Difference]: Finished difference. Result has 100 places, 76 transitions, 811 flow [2024-06-28 00:29:06,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=811, PETRI_PLACES=100, PETRI_TRANSITIONS=76} [2024-06-28 00:29:06,819 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 57 predicate places. [2024-06-28 00:29:06,819 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 76 transitions, 811 flow [2024-06-28 00:29:06,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 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) [2024-06-28 00:29:06,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:06,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:06,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 00:29:06,820 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:06,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:06,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1610576604, now seen corresponding path program 2 times [2024-06-28 00:29:06,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:06,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217980313] [2024-06-28 00:29:06,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:06,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:07,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:07,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:07,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217980313] [2024-06-28 00:29:07,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217980313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:07,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:07,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:29:07,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987791439] [2024-06-28 00:29:07,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:07,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:29:07,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:07,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:29:07,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:29:07,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-28 00:29:07,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 76 transitions, 811 flow. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:07,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:07,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-28 00:29:07,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:07,488 INFO L124 PetriNetUnfolderBase]: 538/1164 cut-off events. [2024-06-28 00:29:07,488 INFO L125 PetriNetUnfolderBase]: For 7810/7814 co-relation queries the response was YES. [2024-06-28 00:29:07,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4356 conditions, 1164 events. 538/1164 cut-off events. For 7810/7814 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7735 event pairs, 89 based on Foata normal form. 36/1181 useless extension candidates. Maximal degree in co-relation 4313. Up to 359 conditions per place. [2024-06-28 00:29:07,493 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 48 selfloop transitions, 14 changer transitions 22/95 dead transitions. [2024-06-28 00:29:07,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 95 transitions, 1029 flow [2024-06-28 00:29:07,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:29:07,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:29:07,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-28 00:29:07,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5571428571428572 [2024-06-28 00:29:07,495 INFO L175 Difference]: Start difference. First operand has 100 places, 76 transitions, 811 flow. Second operand 5 states and 117 transitions. [2024-06-28 00:29:07,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 95 transitions, 1029 flow [2024-06-28 00:29:07,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 95 transitions, 961 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 00:29:07,505 INFO L231 Difference]: Finished difference. Result has 98 places, 58 transitions, 568 flow [2024-06-28 00:29:07,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=568, PETRI_PLACES=98, PETRI_TRANSITIONS=58} [2024-06-28 00:29:07,505 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2024-06-28 00:29:07,506 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 58 transitions, 568 flow [2024-06-28 00:29:07,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:07,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:07,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:07,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 00:29:07,506 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:07,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:07,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1460276921, now seen corresponding path program 1 times [2024-06-28 00:29:07,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:07,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896990445] [2024-06-28 00:29:07,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:07,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:08,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:08,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:08,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896990445] [2024-06-28 00:29:08,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896990445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:08,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:08,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:29:08,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364769659] [2024-06-28 00:29:08,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:08,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:29:08,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:08,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:29:08,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:29:08,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-28 00:29:08,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 58 transitions, 568 flow. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:08,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:08,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-28 00:29:08,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:08,271 INFO L124 PetriNetUnfolderBase]: 236/534 cut-off events. [2024-06-28 00:29:08,272 INFO L125 PetriNetUnfolderBase]: For 3230/3230 co-relation queries the response was YES. [2024-06-28 00:29:08,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1931 conditions, 534 events. 236/534 cut-off events. For 3230/3230 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2886 event pairs, 45 based on Foata normal form. 12/536 useless extension candidates. Maximal degree in co-relation 1906. Up to 326 conditions per place. [2024-06-28 00:29:08,274 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2024-06-28 00:29:08,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 69 transitions, 690 flow [2024-06-28 00:29:08,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:29:08,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:29:08,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-06-28 00:29:08,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047619047619047 [2024-06-28 00:29:08,275 INFO L175 Difference]: Start difference. First operand has 98 places, 58 transitions, 568 flow. Second operand 5 states and 106 transitions. [2024-06-28 00:29:08,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 69 transitions, 690 flow [2024-06-28 00:29:08,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 69 transitions, 491 flow, removed 8 selfloop flow, removed 31 redundant places. [2024-06-28 00:29:08,278 INFO L231 Difference]: Finished difference. Result has 67 places, 0 transitions, 0 flow [2024-06-28 00:29:08,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=67, PETRI_TRANSITIONS=0} [2024-06-28 00:29:08,279 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2024-06-28 00:29:08,279 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 0 transitions, 0 flow [2024-06-28 00:29:08,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:08,281 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-28 00:29:08,282 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-28 00:29:08,282 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-28 00:29:08,282 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-28 00:29:08,282 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-28 00:29:08,282 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-28 00:29:08,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 00:29:08,283 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:08,285 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 00:29:08,285 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 00:29:08,290 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-28 00:29:08,290 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-28 00:29:08,291 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 12:29:08 BasicIcfg [2024-06-28 00:29:08,291 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 00:29:08,293 INFO L158 Benchmark]: Toolchain (without parser) took 12802.89ms. Allocated memory was 197.1MB in the beginning and 648.0MB in the end (delta: 450.9MB). Free memory was 122.3MB in the beginning and 263.2MB in the end (delta: -141.0MB). Peak memory consumption was 311.3MB. Max. memory is 16.1GB. [2024-06-28 00:29:08,293 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 123.7MB. Free memory is still 91.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:29:08,293 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 197.1MB. Free memory is still 170.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:29:08,294 INFO L158 Benchmark]: CACSL2BoogieTranslator took 533.11ms. Allocated memory is still 197.1MB. Free memory was 122.0MB in the beginning and 152.6MB in the end (delta: -30.6MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. [2024-06-28 00:29:08,294 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.23ms. Allocated memory is still 197.1MB. Free memory was 152.6MB in the beginning and 150.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 00:29:08,294 INFO L158 Benchmark]: Boogie Preprocessor took 44.95ms. Allocated memory is still 197.1MB. Free memory was 150.1MB in the beginning and 146.4MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 00:29:08,294 INFO L158 Benchmark]: RCFGBuilder took 759.92ms. Allocated memory is still 197.1MB. Free memory was 146.4MB in the beginning and 134.7MB in the end (delta: 11.7MB). Peak memory consumption was 67.8MB. Max. memory is 16.1GB. [2024-06-28 00:29:08,295 INFO L158 Benchmark]: TraceAbstraction took 11418.85ms. Allocated memory was 197.1MB in the beginning and 648.0MB in the end (delta: 450.9MB). Free memory was 133.6MB in the beginning and 263.2MB in the end (delta: -129.6MB). Peak memory consumption was 321.3MB. Max. memory is 16.1GB. [2024-06-28 00:29:08,295 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 123.7MB. Free memory is still 91.6MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 197.1MB. Free memory is still 170.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 533.11ms. Allocated memory is still 197.1MB. Free memory was 122.0MB in the beginning and 152.6MB in the end (delta: -30.6MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.23ms. Allocated memory is still 197.1MB. Free memory was 152.6MB in the beginning and 150.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.95ms. Allocated memory is still 197.1MB. Free memory was 150.1MB in the beginning and 146.4MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 759.92ms. Allocated memory is still 197.1MB. Free memory was 146.4MB in the beginning and 134.7MB in the end (delta: 11.7MB). Peak memory consumption was 67.8MB. Max. memory is 16.1GB. * TraceAbstraction took 11418.85ms. Allocated memory was 197.1MB in the beginning and 648.0MB in the end (delta: 450.9MB). Free memory was 133.6MB in the beginning and 263.2MB in the end (delta: -129.6MB). Peak memory consumption was 321.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 852]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 854]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 855]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 67 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.3s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 648 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 647 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 189 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1927 IncrementalHoareTripleChecker+Invalid, 2116 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 189 mSolverCounterUnsat, 2 mSDtfsCounter, 1927 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=935occurred in iteration=13, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 312 NumberOfCodeBlocks, 312 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 293 ConstructedInterpolants, 0 QuantifiedInterpolants, 5032 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 00:29:08,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE