./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7c74aec 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/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.fix-undeclared-acsl-variable-e7c74ae-m [2024-02-07 19:04:01,821 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:04:01,881 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:04:01,886 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:04:01,887 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:04:01,910 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:04:01,911 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:04:01,911 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:04:01,912 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:04:01,915 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:04:01,915 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:04:01,915 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:04:01,916 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:04:01,917 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:04:01,917 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:04:01,918 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:04:01,918 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:04:01,918 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:04:01,918 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:04:01,918 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:04:01,919 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:04:01,919 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:04:01,919 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:04:01,919 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:04:01,919 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:04:01,920 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:04:01,920 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:04:01,920 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:04:01,920 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:04:01,921 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:04:01,921 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:04:01,922 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:04:01,922 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:04:01,922 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:04:01,922 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:04:01,922 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:04:01,922 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:04:01,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:04:01,923 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:04:01,923 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:04:01,923 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:04:01,923 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:04:01,923 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:04:01,924 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:04:02,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:04:02,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:04:02,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:04:02,156 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:04:02,156 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:04:02,157 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-02-07 19:04:02,295 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:04:02,296 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:04:02,296 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-07 19:04:03,308 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:04:03,514 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:04:03,515 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-07 19:04:03,527 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dd7944f6/eddd875fdf884e7e8aaea2165fbcceb1/FLAGced4db61d [2024-02-07 19:04:03,537 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dd7944f6/eddd875fdf884e7e8aaea2165fbcceb1 [2024-02-07 19:04:03,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:04:03,539 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:04:03,541 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:04:03,542 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:04:03,545 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:04:03,546 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:04:02" (1/2) ... [2024-02-07 19:04:03,547 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a3ad58 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:04:03, skipping insertion in model container [2024-02-07 19:04:03,547 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:04:02" (1/2) ... [2024-02-07 19:04:03,549 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@641dbef6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:04:03, skipping insertion in model container [2024-02-07 19:04:03,549 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:04:03" (2/2) ... [2024-02-07 19:04:03,549 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a3ad58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:03, skipping insertion in model container [2024-02-07 19:04:03,549 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:04:03" (2/2) ... [2024-02-07 19:04:03,550 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:04:03,668 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:04:03,676 INFO L76 edCorrectnessWitness]: Location invariant before [L754-L754] ((0 <= __unbuffered_p2_EAX) && (__unbuffered_p2_EAX <= 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) [2024-02-07 19:04:03,677 INFO L76 edCorrectnessWitness]: Location invariant before [L18-L18] ((0 <= expression) && (expression <= 1)) && (expression == 0 || expression == 1) [2024-02-07 19:04:03,677 INFO L76 edCorrectnessWitness]: Location invariant before [L761-L761] 0 <= __unbuffered_cnt [2024-02-07 19:04:03,677 INFO L76 edCorrectnessWitness]: Location invariant before [L753-L753] ((0 <= x) && (x <= 1)) && (x == 0 || x == 1) [2024-02-07 19:04:03,677 INFO L76 edCorrectnessWitness]: Location invariant before [L729-L729] ((0 <= x) && (x <= 1)) && (x == 0 || x == 1) [2024-02-07 19:04:03,677 INFO L76 edCorrectnessWitness]: Location invariant before [L726-L726] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 19:04:03,677 INFO L76 edCorrectnessWitness]: Location invariant before [L746-L746] 0 <= __unbuffered_cnt [2024-02-07 19:04:03,677 INFO L76 edCorrectnessWitness]: Location invariant before [L774-L774] 1 <= __unbuffered_cnt [2024-02-07 19:04:03,677 INFO L76 edCorrectnessWitness]: Location invariant before [L803-L803] ((((0 <= __unbuffered_p2_EAX) && (__unbuffered_p2_EAX <= 1)) && (y == 2)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && ((__unbuffered_p0_EAX == 2 && (__unbuffered_p0_EBX == 0 || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)))) || (((((0 <= __unbuffered_p0_EAX && 0 <= __unbuffered_p0_EBX) && __unbuffered_p0_EAX <= 2) && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) [2024-02-07 19:04:03,677 INFO L76 edCorrectnessWitness]: Location invariant before [L734-L734] 0 <= __unbuffered_cnt [2024-02-07 19:04:03,677 INFO L76 edCorrectnessWitness]: Location invariant before [L798-L798] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 19:04:03,677 INFO L76 edCorrectnessWitness]: Location invariant before [L797-L797] 0 <= __unbuffered_cnt [2024-02-07 19:04:03,677 INFO L76 edCorrectnessWitness]: Location invariant before [L769-L769] y == 2 [2024-02-07 19:04:03,678 INFO L76 edCorrectnessWitness]: Location invariant before [L735-L735] 1 <= __unbuffered_cnt [2024-02-07 19:04:03,678 INFO L76 edCorrectnessWitness]: Location invariant before [L805-L805] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-02-07 19:04:03,678 INFO L76 edCorrectnessWitness]: Location invariant before [L747-L747] 1 <= __unbuffered_cnt [2024-02-07 19:04:03,678 INFO L76 edCorrectnessWitness]: Location invariant before [L762-L762] 1 <= __unbuffered_cnt [2024-02-07 19:04:03,678 INFO L76 edCorrectnessWitness]: Location invariant before [L727-L727] (((0 <= __unbuffered_p0_EAX) && (__unbuffered_p0_EAX <= 2)) && (__unbuffered_p0_EAX <= 127)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2) [2024-02-07 19:04:03,678 INFO L76 edCorrectnessWitness]: Location invariant before [L804-L804] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-02-07 19:04:03,678 INFO L76 edCorrectnessWitness]: Location invariant before [L773-L773] 0 <= __unbuffered_cnt [2024-02-07 19:04:03,678 INFO L76 edCorrectnessWitness]: Location invariant before [L799-L799] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 19:04:03,678 INFO L76 edCorrectnessWitness]: Location invariant before [L757-L757] y == 1 [2024-02-07 19:04:03,678 INFO L76 edCorrectnessWitness]: Location invariant before [L730-L730] ((0 <= __unbuffered_p0_EBX) && (__unbuffered_p0_EBX <= 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1) [2024-02-07 19:04:03,678 INFO L76 edCorrectnessWitness]: Location invariant before [L742-L742] x == 1 [2024-02-07 19:04:03,718 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:04:03,858 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-02-07 19:04:03,997 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:04:04,007 INFO L206 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-07 19:04:04,037 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 19:04:04,083 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:04:04,111 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:04:04,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:04 WrapperNode [2024-02-07 19:04:04,111 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:04:04,112 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:04:04,113 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:04:04,113 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:04:04,118 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:04" (1/1) ... [2024-02-07 19:04:04,131 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:04" (1/1) ... [2024-02-07 19:04:04,149 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 88 [2024-02-07 19:04:04,149 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:04:04,150 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:04:04,150 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:04:04,150 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:04:04,158 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:04" (1/1) ... [2024-02-07 19:04:04,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:04" (1/1) ... [2024-02-07 19:04:04,163 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:04" (1/1) ... [2024-02-07 19:04:04,175 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-02-07 19:04:04,176 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:04" (1/1) ... [2024-02-07 19:04:04,176 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:04" (1/1) ... [2024-02-07 19:04:04,182 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:04" (1/1) ... [2024-02-07 19:04:04,183 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:04" (1/1) ... [2024-02-07 19:04:04,185 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:04" (1/1) ... [2024-02-07 19:04:04,186 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:04" (1/1) ... [2024-02-07 19:04:04,188 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:04:04,190 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:04:04,190 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:04:04,190 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:04:04,191 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:04" (1/1) ... [2024-02-07 19:04:04,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:04:04,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:04:04,251 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) [2024-02-07 19:04:04,267 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 [2024-02-07 19:04:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:04:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:04:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:04:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 19:04:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 19:04:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 19:04:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:04:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:04:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:04:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-02-07 19:04:04,280 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-02-07 19:04:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-02-07 19:04:04,280 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-02-07 19:04:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-02-07 19:04:04,281 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-02-07 19:04:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-02-07 19:04:04,281 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-02-07 19:04:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:04:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:04:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:04:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 19:04:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 19:04:04,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 19:04:04,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:04:04,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:04:04,283 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 19:04:04,395 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:04:04,397 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:04:04,605 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:04:04,605 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:04:04,708 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:04:04,709 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 19:04:04,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:04:04 BoogieIcfgContainer [2024-02-07 19:04:04,709 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:04:04,710 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:04:04,712 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:04:04,714 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:04:04,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:04:02" (1/4) ... [2024-02-07 19:04:04,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f01fdbe and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:04:04, skipping insertion in model container [2024-02-07 19:04:04,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:04:03" (2/4) ... [2024-02-07 19:04:04,716 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f01fdbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:04:04, skipping insertion in model container [2024-02-07 19:04:04,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:04" (3/4) ... [2024-02-07 19:04:04,716 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f01fdbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:04:04, skipping insertion in model container [2024-02-07 19:04:04,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:04:04" (4/4) ... [2024-02-07 19:04:04,718 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-07 19:04:04,734 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:04:04,734 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2024-02-07 19:04:04,734 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:04:04,784 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 19:04:04,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 70 transitions, 156 flow [2024-02-07 19:04:04,858 INFO L124 PetriNetUnfolderBase]: 1/66 cut-off events. [2024-02-07 19:04:04,859 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:04:04,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 66 events. 1/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 198 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2024-02-07 19:04:04,862 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 70 transitions, 156 flow [2024-02-07 19:04:04,866 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 66 transitions, 144 flow [2024-02-07 19:04:04,878 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:04:04,885 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;@215a8d02, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:04:04,886 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-02-07 19:04:04,889 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:04:04,889 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-02-07 19:04:04,890 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:04:04,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:04,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-07 19:04:04,891 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:04:04,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:04,898 INFO L85 PathProgramCache]: Analyzing trace with hash 10818735, now seen corresponding path program 1 times [2024-02-07 19:04:04,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:04,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972041872] [2024-02-07 19:04:04,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:04,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:05,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:05,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:05,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972041872] [2024-02-07 19:04:05,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972041872] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:05,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:05,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:04:05,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657553849] [2024-02-07 19:04:05,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:05,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:05,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:05,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:05,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:05,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 70 [2024-02-07 19:04:05,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 66 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-02-07 19:04:05,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:05,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 70 [2024-02-07 19:04:05,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:10,752 INFO L124 PetriNetUnfolderBase]: 40398/62794 cut-off events. [2024-02-07 19:04:10,753 INFO L125 PetriNetUnfolderBase]: For 225/225 co-relation queries the response was YES. [2024-02-07 19:04:11,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116579 conditions, 62794 events. 40398/62794 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 2727. Compared 525878 event pairs, 11006 based on Foata normal form. 1280/45380 useless extension candidates. Maximal degree in co-relation 116567. Up to 50263 conditions per place. [2024-02-07 19:04:11,920 INFO L140 encePairwiseOnDemand]: 52/70 looper letters, 55 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2024-02-07 19:04:11,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 74 transitions, 279 flow [2024-02-07 19:04:11,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:11,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:11,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-02-07 19:04:11,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.680952380952381 [2024-02-07 19:04:11,958 INFO L175 Difference]: Start difference. First operand has 78 places, 66 transitions, 144 flow. Second operand 3 states and 143 transitions. [2024-02-07 19:04:11,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 74 transitions, 279 flow [2024-02-07 19:04:11,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 74 transitions, 274 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-07 19:04:11,986 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 135 flow [2024-02-07 19:04:11,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-02-07 19:04:12,005 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -13 predicate places. [2024-02-07 19:04:12,006 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 135 flow [2024-02-07 19:04:12,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-02-07 19:04:12,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:12,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 19:04:12,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:04:12,008 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:04:12,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:12,008 INFO L85 PathProgramCache]: Analyzing trace with hash 335381205, now seen corresponding path program 1 times [2024-02-07 19:04:12,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:12,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486717460] [2024-02-07 19:04:12,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:12,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:12,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:12,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:12,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486717460] [2024-02-07 19:04:12,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486717460] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:12,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:12,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:04:12,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252198456] [2024-02-07 19:04:12,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:12,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:12,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:12,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:12,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:12,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 70 [2024-02-07 19:04:12,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-02-07 19:04:12,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:12,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 70 [2024-02-07 19:04:12,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:17,293 INFO L124 PetriNetUnfolderBase]: 38224/53683 cut-off events. [2024-02-07 19:04:17,293 INFO L125 PetriNetUnfolderBase]: For 6199/6215 co-relation queries the response was YES. [2024-02-07 19:04:17,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111807 conditions, 53683 events. 38224/53683 cut-off events. For 6199/6215 co-relation queries the response was YES. Maximal size of possible extension queue 2380. Compared 386870 event pairs, 6288 based on Foata normal form. 0/40918 useless extension candidates. Maximal degree in co-relation 111796. Up to 43927 conditions per place. [2024-02-07 19:04:17,937 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 66 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2024-02-07 19:04:17,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 84 transitions, 347 flow [2024-02-07 19:04:17,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:17,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:17,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-02-07 19:04:17,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-02-07 19:04:17,944 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 135 flow. Second operand 3 states and 126 transitions. [2024-02-07 19:04:17,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 84 transitions, 347 flow [2024-02-07 19:04:17,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 84 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:04:17,962 INFO L231 Difference]: Finished difference. Result has 67 places, 55 transitions, 142 flow [2024-02-07 19:04:17,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=67, PETRI_TRANSITIONS=55} [2024-02-07 19:04:17,963 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -11 predicate places. [2024-02-07 19:04:17,963 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 55 transitions, 142 flow [2024-02-07 19:04:17,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-02-07 19:04:17,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:17,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:17,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 19:04:17,964 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:04:17,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:17,965 INFO L85 PathProgramCache]: Analyzing trace with hash 178804280, now seen corresponding path program 1 times [2024-02-07 19:04:17,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:17,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374613908] [2024-02-07 19:04:17,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:18,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:18,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:18,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:18,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374613908] [2024-02-07 19:04:18,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374613908] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:18,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:18,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:04:18,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267725822] [2024-02-07 19:04:18,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:18,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:18,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:18,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:18,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:18,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 70 [2024-02-07 19:04:18,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2024-02-07 19:04:18,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:18,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 70 [2024-02-07 19:04:18,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:20,924 INFO L124 PetriNetUnfolderBase]: 31873/42811 cut-off events. [2024-02-07 19:04:20,924 INFO L125 PetriNetUnfolderBase]: For 8967/8986 co-relation queries the response was YES. [2024-02-07 19:04:21,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96271 conditions, 42811 events. 31873/42811 cut-off events. For 8967/8986 co-relation queries the response was YES. Maximal size of possible extension queue 1923. Compared 263116 event pairs, 11415 based on Foata normal form. 0/35611 useless extension candidates. Maximal degree in co-relation 96258. Up to 40887 conditions per place. [2024-02-07 19:04:21,354 INFO L140 encePairwiseOnDemand]: 60/70 looper letters, 62 selfloop transitions, 5 changer transitions 0/83 dead transitions. [2024-02-07 19:04:21,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 83 transitions, 357 flow [2024-02-07 19:04:21,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:21,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:21,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2024-02-07 19:04:21,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6095238095238096 [2024-02-07 19:04:21,362 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 142 flow. Second operand 3 states and 128 transitions. [2024-02-07 19:04:21,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 83 transitions, 357 flow [2024-02-07 19:04:21,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 83 transitions, 351 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:04:21,368 INFO L231 Difference]: Finished difference. Result has 68 places, 59 transitions, 179 flow [2024-02-07 19:04:21,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=68, PETRI_TRANSITIONS=59} [2024-02-07 19:04:21,369 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -10 predicate places. [2024-02-07 19:04:21,370 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 59 transitions, 179 flow [2024-02-07 19:04:21,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2024-02-07 19:04:21,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:21,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:21,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 19:04:21,370 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:04:21,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:21,371 INFO L85 PathProgramCache]: Analyzing trace with hash 19545884, now seen corresponding path program 1 times [2024-02-07 19:04:21,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:21,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826568978] [2024-02-07 19:04:21,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:21,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:21,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:21,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:21,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826568978] [2024-02-07 19:04:21,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826568978] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:21,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:21,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:04:21,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182412] [2024-02-07 19:04:21,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:21,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:21,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:21,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:21,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:21,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 70 [2024-02-07 19:04:21,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-02-07 19:04:21,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:21,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 70 [2024-02-07 19:04:21,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:24,013 INFO L124 PetriNetUnfolderBase]: 25346/35521 cut-off events. [2024-02-07 19:04:24,013 INFO L125 PetriNetUnfolderBase]: For 9160/9173 co-relation queries the response was YES. [2024-02-07 19:04:24,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87858 conditions, 35521 events. 25346/35521 cut-off events. For 9160/9173 co-relation queries the response was YES. Maximal size of possible extension queue 1589. Compared 230943 event pairs, 8460 based on Foata normal form. 1947/32103 useless extension candidates. Maximal degree in co-relation 87844. Up to 28680 conditions per place. [2024-02-07 19:04:24,488 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 72 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2024-02-07 19:04:24,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 89 transitions, 420 flow [2024-02-07 19:04:24,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:24,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:24,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-02-07 19:04:24,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2024-02-07 19:04:24,490 INFO L175 Difference]: Start difference. First operand has 68 places, 59 transitions, 179 flow. Second operand 3 states and 124 transitions. [2024-02-07 19:04:24,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 89 transitions, 420 flow [2024-02-07 19:04:24,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 410 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:04:24,494 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 166 flow [2024-02-07 19:04:24,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2024-02-07 19:04:24,501 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -12 predicate places. [2024-02-07 19:04:24,501 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 166 flow [2024-02-07 19:04:24,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-02-07 19:04:24,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:24,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:24,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 19:04:24,502 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:04:24,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:24,503 INFO L85 PathProgramCache]: Analyzing trace with hash -2139232056, now seen corresponding path program 1 times [2024-02-07 19:04:24,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:24,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492114607] [2024-02-07 19:04:24,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:24,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:24,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:24,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:24,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492114607] [2024-02-07 19:04:24,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492114607] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:24,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:24,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:04:24,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371965793] [2024-02-07 19:04:24,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:24,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:24,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:24,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:24,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:24,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 70 [2024-02-07 19:04:24,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-02-07 19:04:24,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:24,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 70 [2024-02-07 19:04:24,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:28,943 INFO L124 PetriNetUnfolderBase]: 36159/54655 cut-off events. [2024-02-07 19:04:28,943 INFO L125 PetriNetUnfolderBase]: For 13747/13803 co-relation queries the response was YES. [2024-02-07 19:04:29,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128328 conditions, 54655 events. 36159/54655 cut-off events. For 13747/13803 co-relation queries the response was YES. Maximal size of possible extension queue 2615. Compared 443558 event pairs, 17193 based on Foata normal form. 1406/46202 useless extension candidates. Maximal degree in co-relation 128315. Up to 27923 conditions per place. [2024-02-07 19:04:29,457 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 66 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2024-02-07 19:04:29,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 85 transitions, 390 flow [2024-02-07 19:04:29,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:29,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:29,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-02-07 19:04:29,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2024-02-07 19:04:29,470 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 166 flow. Second operand 3 states and 122 transitions. [2024-02-07 19:04:29,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 85 transitions, 390 flow [2024-02-07 19:04:29,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 85 transitions, 388 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:04:29,474 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 178 flow [2024-02-07 19:04:29,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2024-02-07 19:04:29,475 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -10 predicate places. [2024-02-07 19:04:29,475 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 178 flow [2024-02-07 19:04:29,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-02-07 19:04:29,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:29,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:29,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 19:04:29,476 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:04:29,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:29,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1527538452, now seen corresponding path program 1 times [2024-02-07 19:04:29,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:29,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791582555] [2024-02-07 19:04:29,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:29,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:29,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:29,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:29,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791582555] [2024-02-07 19:04:29,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791582555] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:29,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:29,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:04:29,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937927493] [2024-02-07 19:04:29,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:29,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:29,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:29,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:29,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:29,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 70 [2024-02-07 19:04:29,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-02-07 19:04:29,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:29,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 70 [2024-02-07 19:04:29,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:33,262 INFO L124 PetriNetUnfolderBase]: 36159/56638 cut-off events. [2024-02-07 19:04:33,262 INFO L125 PetriNetUnfolderBase]: For 20359/20397 co-relation queries the response was YES. [2024-02-07 19:04:33,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134420 conditions, 56638 events. 36159/56638 cut-off events. For 20359/20397 co-relation queries the response was YES. Maximal size of possible extension queue 2638. Compared 483781 event pairs, 32671 based on Foata normal form. 0/45785 useless extension candidates. Maximal degree in co-relation 134406. Up to 48636 conditions per place. [2024-02-07 19:04:33,707 INFO L140 encePairwiseOnDemand]: 68/70 looper letters, 40 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2024-02-07 19:04:33,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 56 transitions, 258 flow [2024-02-07 19:04:33,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:33,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:33,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-02-07 19:04:33,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-02-07 19:04:33,709 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 178 flow. Second operand 3 states and 93 transitions. [2024-02-07 19:04:33,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 56 transitions, 258 flow [2024-02-07 19:04:33,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 56 transitions, 253 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-02-07 19:04:33,721 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 173 flow [2024-02-07 19:04:33,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2024-02-07 19:04:33,722 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -10 predicate places. [2024-02-07 19:04:33,722 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 173 flow [2024-02-07 19:04:33,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-02-07 19:04:33,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:33,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:33,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 19:04:33,723 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:04:33,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:33,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1929839454, now seen corresponding path program 1 times [2024-02-07 19:04:33,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:33,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25188188] [2024-02-07 19:04:33,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:33,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:33,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:33,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:33,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25188188] [2024-02-07 19:04:33,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25188188] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:33,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:33,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:04:33,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674716240] [2024-02-07 19:04:33,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:33,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:33,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:33,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:33,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:33,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 70 [2024-02-07 19:04:33,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-02-07 19:04:33,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:33,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 70 [2024-02-07 19:04:33,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:36,834 INFO L124 PetriNetUnfolderBase]: 32039/48245 cut-off events. [2024-02-07 19:04:36,834 INFO L125 PetriNetUnfolderBase]: For 13448/13486 co-relation queries the response was YES. [2024-02-07 19:04:37,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114684 conditions, 48245 events. 32039/48245 cut-off events. For 13448/13486 co-relation queries the response was YES. Maximal size of possible extension queue 2246. Compared 378270 event pairs, 12075 based on Foata normal form. 912/40232 useless extension candidates. Maximal degree in co-relation 114673. Up to 23052 conditions per place. [2024-02-07 19:04:37,187 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 64 selfloop transitions, 3 changer transitions 0/82 dead transitions. [2024-02-07 19:04:37,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 82 transitions, 382 flow [2024-02-07 19:04:37,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:37,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:37,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-02-07 19:04:37,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-02-07 19:04:37,201 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 173 flow. Second operand 3 states and 119 transitions. [2024-02-07 19:04:37,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 82 transitions, 382 flow [2024-02-07 19:04:37,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 82 transitions, 381 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:04:37,209 INFO L231 Difference]: Finished difference. Result has 68 places, 55 transitions, 172 flow [2024-02-07 19:04:37,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=68, PETRI_TRANSITIONS=55} [2024-02-07 19:04:37,210 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -10 predicate places. [2024-02-07 19:04:37,210 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 55 transitions, 172 flow [2024-02-07 19:04:37,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-02-07 19:04:37,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:37,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:37,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 19:04:37,214 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:04:37,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:37,215 INFO L85 PathProgramCache]: Analyzing trace with hash -691965458, now seen corresponding path program 1 times [2024-02-07 19:04:37,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:37,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906675590] [2024-02-07 19:04:37,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:37,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:37,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:37,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:37,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906675590] [2024-02-07 19:04:37,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906675590] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:37,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:37,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:04:37,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270354644] [2024-02-07 19:04:37,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:37,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:37,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:37,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:37,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:37,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 70 [2024-02-07 19:04:37,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-02-07 19:04:37,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:37,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 70 [2024-02-07 19:04:37,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:38,279 INFO L124 PetriNetUnfolderBase]: 12848/17732 cut-off events. [2024-02-07 19:04:38,279 INFO L125 PetriNetUnfolderBase]: For 8502/8520 co-relation queries the response was YES. [2024-02-07 19:04:38,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44340 conditions, 17732 events. 12848/17732 cut-off events. For 8502/8520 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 102035 event pairs, 4124 based on Foata normal form. 538/18152 useless extension candidates. Maximal degree in co-relation 44329. Up to 16490 conditions per place. [2024-02-07 19:04:38,384 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 50 selfloop transitions, 4 changer transitions 2/71 dead transitions. [2024-02-07 19:04:38,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 71 transitions, 335 flow [2024-02-07 19:04:38,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:38,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:38,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-02-07 19:04:38,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5571428571428572 [2024-02-07 19:04:38,389 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 172 flow. Second operand 3 states and 117 transitions. [2024-02-07 19:04:38,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 71 transitions, 335 flow [2024-02-07 19:04:38,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 71 transitions, 329 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:04:38,393 INFO L231 Difference]: Finished difference. Result has 64 places, 49 transitions, 155 flow [2024-02-07 19:04:38,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=64, PETRI_TRANSITIONS=49} [2024-02-07 19:04:38,396 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -14 predicate places. [2024-02-07 19:04:38,396 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 49 transitions, 155 flow [2024-02-07 19:04:38,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-02-07 19:04:38,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:38,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:38,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 19:04:38,397 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:04:38,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:38,397 INFO L85 PathProgramCache]: Analyzing trace with hash -914352359, now seen corresponding path program 1 times [2024-02-07 19:04:38,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:38,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864636116] [2024-02-07 19:04:38,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:38,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:38,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:38,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:38,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864636116] [2024-02-07 19:04:38,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864636116] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:38,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:38,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:04:38,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579888185] [2024-02-07 19:04:38,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:38,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:04:38,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:38,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:04:38,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:04:38,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 70 [2024-02-07 19:04:38,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 49 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2024-02-07 19:04:38,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:38,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 70 [2024-02-07 19:04:38,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:39,456 INFO L124 PetriNetUnfolderBase]: 11883/19565 cut-off events. [2024-02-07 19:04:39,465 INFO L125 PetriNetUnfolderBase]: For 8087/8105 co-relation queries the response was YES. [2024-02-07 19:04:39,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44519 conditions, 19565 events. 11883/19565 cut-off events. For 8087/8105 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 151298 event pairs, 1714 based on Foata normal form. 580/19219 useless extension candidates. Maximal degree in co-relation 44508. Up to 9686 conditions per place. [2024-02-07 19:04:39,599 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 59 selfloop transitions, 6 changer transitions 1/81 dead transitions. [2024-02-07 19:04:39,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 81 transitions, 397 flow [2024-02-07 19:04:39,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:04:39,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:04:39,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 138 transitions. [2024-02-07 19:04:39,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928571428571429 [2024-02-07 19:04:39,601 INFO L175 Difference]: Start difference. First operand has 64 places, 49 transitions, 155 flow. Second operand 4 states and 138 transitions. [2024-02-07 19:04:39,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 81 transitions, 397 flow [2024-02-07 19:04:39,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 81 transitions, 393 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:04:39,603 INFO L231 Difference]: Finished difference. Result has 67 places, 49 transitions, 177 flow [2024-02-07 19:04:39,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=67, PETRI_TRANSITIONS=49} [2024-02-07 19:04:39,604 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -11 predicate places. [2024-02-07 19:04:39,605 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 49 transitions, 177 flow [2024-02-07 19:04:39,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2024-02-07 19:04:39,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:39,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:39,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 19:04:39,605 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:04:39,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:39,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1714447226, now seen corresponding path program 1 times [2024-02-07 19:04:39,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:39,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131843444] [2024-02-07 19:04:39,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:39,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:39,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:39,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:39,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131843444] [2024-02-07 19:04:39,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131843444] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:39,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:39,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:04:39,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896970056] [2024-02-07 19:04:39,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:39,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:04:39,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:39,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:04:39,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:04:39,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 70 [2024-02-07 19:04:39,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 49 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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) [2024-02-07 19:04:39,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:39,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 70 [2024-02-07 19:04:39,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:40,604 INFO L124 PetriNetUnfolderBase]: 9354/15258 cut-off events. [2024-02-07 19:04:40,605 INFO L125 PetriNetUnfolderBase]: For 8085/8103 co-relation queries the response was YES. [2024-02-07 19:04:40,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36887 conditions, 15258 events. 9354/15258 cut-off events. For 8085/8103 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 110714 event pairs, 754 based on Foata normal form. 538/15158 useless extension candidates. Maximal degree in co-relation 36873. Up to 6421 conditions per place. [2024-02-07 19:04:40,683 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 76 selfloop transitions, 10 changer transitions 1/102 dead transitions. [2024-02-07 19:04:40,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 102 transitions, 534 flow [2024-02-07 19:04:40,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:04:40,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:04:40,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2024-02-07 19:04:40,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5028571428571429 [2024-02-07 19:04:40,685 INFO L175 Difference]: Start difference. First operand has 67 places, 49 transitions, 177 flow. Second operand 5 states and 176 transitions. [2024-02-07 19:04:40,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 102 transitions, 534 flow [2024-02-07 19:04:40,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 102 transitions, 511 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-02-07 19:04:40,692 INFO L231 Difference]: Finished difference. Result has 69 places, 53 transitions, 217 flow [2024-02-07 19:04:40,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=69, PETRI_TRANSITIONS=53} [2024-02-07 19:04:40,692 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -9 predicate places. [2024-02-07 19:04:40,692 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 53 transitions, 217 flow [2024-02-07 19:04:40,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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) [2024-02-07 19:04:40,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:40,693 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] [2024-02-07 19:04:40,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 19:04:40,693 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:04:40,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:40,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1602591589, now seen corresponding path program 1 times [2024-02-07 19:04:40,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:40,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4829378] [2024-02-07 19:04:40,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:40,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:40,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:40,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:40,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4829378] [2024-02-07 19:04:40,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4829378] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:40,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:40,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:04:40,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999991476] [2024-02-07 19:04:40,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:40,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:04:40,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:40,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:04:40,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:04:40,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 70 [2024-02-07 19:04:40,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 53 transitions, 217 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2024-02-07 19:04:40,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:40,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 70 [2024-02-07 19:04:40,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:41,479 INFO L124 PetriNetUnfolderBase]: 8135/13617 cut-off events. [2024-02-07 19:04:41,479 INFO L125 PetriNetUnfolderBase]: For 11552/11552 co-relation queries the response was YES. [2024-02-07 19:04:41,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35057 conditions, 13617 events. 8135/13617 cut-off events. For 11552/11552 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 100139 event pairs, 4223 based on Foata normal form. 4/13015 useless extension candidates. Maximal degree in co-relation 35043. Up to 11167 conditions per place. [2024-02-07 19:04:41,563 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 59 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2024-02-07 19:04:41,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 80 transitions, 457 flow [2024-02-07 19:04:41,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:04:41,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:04:41,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-02-07 19:04:41,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4785714285714286 [2024-02-07 19:04:41,564 INFO L175 Difference]: Start difference. First operand has 69 places, 53 transitions, 217 flow. Second operand 4 states and 134 transitions. [2024-02-07 19:04:41,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 80 transitions, 457 flow [2024-02-07 19:04:41,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 80 transitions, 413 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-02-07 19:04:41,580 INFO L231 Difference]: Finished difference. Result has 70 places, 58 transitions, 230 flow [2024-02-07 19:04:41,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=230, PETRI_PLACES=70, PETRI_TRANSITIONS=58} [2024-02-07 19:04:41,580 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -8 predicate places. [2024-02-07 19:04:41,581 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 58 transitions, 230 flow [2024-02-07 19:04:41,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2024-02-07 19:04:41,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:41,581 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] [2024-02-07 19:04:41,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-07 19:04:41,581 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:04:41,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:41,582 INFO L85 PathProgramCache]: Analyzing trace with hash -2072975622, now seen corresponding path program 1 times [2024-02-07 19:04:41,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:41,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358231615] [2024-02-07 19:04:41,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:41,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:41,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:41,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:41,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358231615] [2024-02-07 19:04:41,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358231615] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:41,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:41,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:04:41,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84087614] [2024-02-07 19:04:41,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:41,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:04:41,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:41,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:04:41,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:04:41,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 70 [2024-02-07 19:04:41,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 58 transitions, 230 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:41,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:41,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 70 [2024-02-07 19:04:41,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:42,194 INFO L124 PetriNetUnfolderBase]: 6079/9509 cut-off events. [2024-02-07 19:04:42,195 INFO L125 PetriNetUnfolderBase]: For 6582/6600 co-relation queries the response was YES. [2024-02-07 19:04:42,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25158 conditions, 9509 events. 6079/9509 cut-off events. For 6582/6600 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 57904 event pairs, 369 based on Foata normal form. 384/9631 useless extension candidates. Maximal degree in co-relation 25143. Up to 2452 conditions per place. [2024-02-07 19:04:42,243 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 99 selfloop transitions, 14 changer transitions 1/129 dead transitions. [2024-02-07 19:04:42,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 129 transitions, 740 flow [2024-02-07 19:04:42,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:04:42,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:04:42,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 212 transitions. [2024-02-07 19:04:42,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047619047619047 [2024-02-07 19:04:42,244 INFO L175 Difference]: Start difference. First operand has 70 places, 58 transitions, 230 flow. Second operand 6 states and 212 transitions. [2024-02-07 19:04:42,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 129 transitions, 740 flow [2024-02-07 19:04:42,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 129 transitions, 730 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-02-07 19:04:42,253 INFO L231 Difference]: Finished difference. Result has 76 places, 62 transitions, 302 flow [2024-02-07 19:04:42,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=302, PETRI_PLACES=76, PETRI_TRANSITIONS=62} [2024-02-07 19:04:42,254 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2024-02-07 19:04:42,254 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 62 transitions, 302 flow [2024-02-07 19:04:42,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:42,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:42,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:42,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-07 19:04:42,254 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:04:42,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:42,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1668999133, now seen corresponding path program 1 times [2024-02-07 19:04:42,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:42,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490466740] [2024-02-07 19:04:42,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:42,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:42,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:42,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:42,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490466740] [2024-02-07 19:04:42,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490466740] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:42,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:42,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:04:42,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663352743] [2024-02-07 19:04:42,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:42,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:04:42,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:42,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:04:42,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:04:42,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 70 [2024-02-07 19:04:42,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 62 transitions, 302 flow. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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) [2024-02-07 19:04:42,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:42,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 70 [2024-02-07 19:04:42,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:43,097 INFO L124 PetriNetUnfolderBase]: 5531/9037 cut-off events. [2024-02-07 19:04:43,097 INFO L125 PetriNetUnfolderBase]: For 12348/12348 co-relation queries the response was YES. [2024-02-07 19:04:43,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25937 conditions, 9037 events. 5531/9037 cut-off events. For 12348/12348 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 58197 event pairs, 1239 based on Foata normal form. 8/8783 useless extension candidates. Maximal degree in co-relation 25919. Up to 7071 conditions per place. [2024-02-07 19:04:43,185 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 72 selfloop transitions, 8 changer transitions 0/95 dead transitions. [2024-02-07 19:04:43,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 95 transitions, 644 flow [2024-02-07 19:04:43,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:04:43,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:04:43,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-02-07 19:04:43,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-02-07 19:04:43,187 INFO L175 Difference]: Start difference. First operand has 76 places, 62 transitions, 302 flow. Second operand 4 states and 136 transitions. [2024-02-07 19:04:43,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 95 transitions, 644 flow [2024-02-07 19:04:43,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 95 transitions, 561 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-02-07 19:04:43,240 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 306 flow [2024-02-07 19:04:43,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2024-02-07 19:04:43,240 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2024-02-07 19:04:43,240 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 306 flow [2024-02-07 19:04:43,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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) [2024-02-07 19:04:43,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:43,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:43,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-07 19:04:43,241 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:04:43,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:43,242 INFO L85 PathProgramCache]: Analyzing trace with hash -58054221, now seen corresponding path program 2 times [2024-02-07 19:04:43,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:43,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374067590] [2024-02-07 19:04:43,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:43,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:43,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:43,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:43,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374067590] [2024-02-07 19:04:43,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374067590] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:43,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:43,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:04:43,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344902531] [2024-02-07 19:04:43,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:43,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:04:43,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:43,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:04:43,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:04:43,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 70 [2024-02-07 19:04:43,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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) [2024-02-07 19:04:43,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:43,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 70 [2024-02-07 19:04:43,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:44,243 INFO L124 PetriNetUnfolderBase]: 5511/9009 cut-off events. [2024-02-07 19:04:44,243 INFO L125 PetriNetUnfolderBase]: For 7850/7850 co-relation queries the response was YES. [2024-02-07 19:04:44,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24586 conditions, 9009 events. 5511/9009 cut-off events. For 7850/7850 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 58016 event pairs, 1219 based on Foata normal form. 8/8755 useless extension candidates. Maximal degree in co-relation 24567. Up to 6683 conditions per place. [2024-02-07 19:04:44,304 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 97 selfloop transitions, 11 changer transitions 0/123 dead transitions. [2024-02-07 19:04:44,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 123 transitions, 774 flow [2024-02-07 19:04:44,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:04:44,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:04:44,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2024-02-07 19:04:44,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-02-07 19:04:44,305 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 306 flow. Second operand 6 states and 196 transitions. [2024-02-07 19:04:44,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 123 transitions, 774 flow [2024-02-07 19:04:44,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 123 transitions, 772 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-02-07 19:04:44,324 INFO L231 Difference]: Finished difference. Result has 83 places, 67 transitions, 343 flow [2024-02-07 19:04:44,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=343, PETRI_PLACES=83, PETRI_TRANSITIONS=67} [2024-02-07 19:04:44,325 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2024-02-07 19:04:44,325 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 67 transitions, 343 flow [2024-02-07 19:04:44,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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) [2024-02-07 19:04:44,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:44,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:44,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-02-07 19:04:44,326 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:04:44,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:44,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1126659094, now seen corresponding path program 1 times [2024-02-07 19:04:44,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:44,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661915386] [2024-02-07 19:04:44,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:44,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:44,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:44,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:44,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661915386] [2024-02-07 19:04:44,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661915386] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:44,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:44,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:04:44,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192515283] [2024-02-07 19:04:44,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:44,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:04:44,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:44,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:04:44,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:04:44,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 70 [2024-02-07 19:04:44,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 67 transitions, 343 flow. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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) [2024-02-07 19:04:44,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:44,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 70 [2024-02-07 19:04:44,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:45,153 INFO L124 PetriNetUnfolderBase]: 6151/9986 cut-off events. [2024-02-07 19:04:45,154 INFO L125 PetriNetUnfolderBase]: For 10701/10704 co-relation queries the response was YES. [2024-02-07 19:04:45,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28359 conditions, 9986 events. 6151/9986 cut-off events. For 10701/10704 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 64582 event pairs, 3074 based on Foata normal form. 8/9723 useless extension candidates. Maximal degree in co-relation 28336. Up to 7105 conditions per place. [2024-02-07 19:04:45,218 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 129 selfloop transitions, 15 changer transitions 0/159 dead transitions. [2024-02-07 19:04:45,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 159 transitions, 1085 flow [2024-02-07 19:04:45,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:04:45,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:04:45,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 212 transitions. [2024-02-07 19:04:45,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047619047619047 [2024-02-07 19:04:45,220 INFO L175 Difference]: Start difference. First operand has 83 places, 67 transitions, 343 flow. Second operand 6 states and 212 transitions. [2024-02-07 19:04:45,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 159 transitions, 1085 flow [2024-02-07 19:04:45,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 159 transitions, 1044 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-02-07 19:04:45,243 INFO L231 Difference]: Finished difference. Result has 88 places, 78 transitions, 437 flow [2024-02-07 19:04:45,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=437, PETRI_PLACES=88, PETRI_TRANSITIONS=78} [2024-02-07 19:04:45,244 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 10 predicate places. [2024-02-07 19:04:45,244 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 78 transitions, 437 flow [2024-02-07 19:04:45,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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) [2024-02-07 19:04:45,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:45,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:45,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-02-07 19:04:45,245 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:04:45,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:45,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1310527154, now seen corresponding path program 2 times [2024-02-07 19:04:45,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:45,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204692733] [2024-02-07 19:04:45,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:45,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:45,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:45,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:45,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204692733] [2024-02-07 19:04:45,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204692733] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:45,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:45,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:04:45,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943212292] [2024-02-07 19:04:45,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:45,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:04:45,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:45,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:04:45,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:04:45,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 70 [2024-02-07 19:04:45,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 78 transitions, 437 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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) [2024-02-07 19:04:45,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:45,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 70 [2024-02-07 19:04:45,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:46,027 INFO L124 PetriNetUnfolderBase]: 6131/9975 cut-off events. [2024-02-07 19:04:46,027 INFO L125 PetriNetUnfolderBase]: For 12670/12673 co-relation queries the response was YES. [2024-02-07 19:04:46,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29743 conditions, 9975 events. 6131/9975 cut-off events. For 12670/12673 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 64774 event pairs, 3031 based on Foata normal form. 8/9711 useless extension candidates. Maximal degree in co-relation 29717. Up to 7767 conditions per place. [2024-02-07 19:04:46,100 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 111 selfloop transitions, 21 changer transitions 0/147 dead transitions. [2024-02-07 19:04:46,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 147 transitions, 1048 flow [2024-02-07 19:04:46,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:04:46,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:04:46,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2024-02-07 19:04:46,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49047619047619045 [2024-02-07 19:04:46,102 INFO L175 Difference]: Start difference. First operand has 88 places, 78 transitions, 437 flow. Second operand 6 states and 206 transitions. [2024-02-07 19:04:46,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 147 transitions, 1048 flow [2024-02-07 19:04:46,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 147 transitions, 1031 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-02-07 19:04:46,136 INFO L231 Difference]: Finished difference. Result has 93 places, 88 transitions, 561 flow [2024-02-07 19:04:46,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=561, PETRI_PLACES=93, PETRI_TRANSITIONS=88} [2024-02-07 19:04:46,136 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 15 predicate places. [2024-02-07 19:04:46,137 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 88 transitions, 561 flow [2024-02-07 19:04:46,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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) [2024-02-07 19:04:46,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:46,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:46,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-02-07 19:04:46,138 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:04:46,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:46,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1889340482, now seen corresponding path program 3 times [2024-02-07 19:04:46,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:46,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854913009] [2024-02-07 19:04:46,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:46,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:46,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:46,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:46,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854913009] [2024-02-07 19:04:46,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854913009] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:46,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:46,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:46,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379593972] [2024-02-07 19:04:46,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:46,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:46,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:46,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:46,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:46,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 70 [2024-02-07 19:04:46,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 88 transitions, 561 flow. Second operand has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 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) [2024-02-07 19:04:46,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:46,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 70 [2024-02-07 19:04:46,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:46,930 INFO L124 PetriNetUnfolderBase]: 4923/7167 cut-off events. [2024-02-07 19:04:46,930 INFO L125 PetriNetUnfolderBase]: For 12876/12897 co-relation queries the response was YES. [2024-02-07 19:04:46,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23311 conditions, 7167 events. 4923/7167 cut-off events. For 12876/12897 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 37235 event pairs, 257 based on Foata normal form. 192/7285 useless extension candidates. Maximal degree in co-relation 23283. Up to 2256 conditions per place. [2024-02-07 19:04:46,995 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 158 selfloop transitions, 18 changer transitions 1/192 dead transitions. [2024-02-07 19:04:46,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 192 transitions, 1578 flow [2024-02-07 19:04:46,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 19:04:46,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 19:04:46,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 226 transitions. [2024-02-07 19:04:46,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46122448979591835 [2024-02-07 19:04:46,996 INFO L175 Difference]: Start difference. First operand has 93 places, 88 transitions, 561 flow. Second operand 7 states and 226 transitions. [2024-02-07 19:04:46,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 192 transitions, 1578 flow [2024-02-07 19:04:47,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 192 transitions, 1436 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-02-07 19:04:47,042 INFO L231 Difference]: Finished difference. Result has 96 places, 88 transitions, 553 flow [2024-02-07 19:04:47,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=553, PETRI_PLACES=96, PETRI_TRANSITIONS=88} [2024-02-07 19:04:47,042 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 18 predicate places. [2024-02-07 19:04:47,042 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 88 transitions, 553 flow [2024-02-07 19:04:47,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 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) [2024-02-07 19:04:47,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:47,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:47,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-02-07 19:04:47,043 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:04:47,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:47,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1327353284, now seen corresponding path program 1 times [2024-02-07 19:04:47,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:47,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343189609] [2024-02-07 19:04:47,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:47,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:47,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:47,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:47,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343189609] [2024-02-07 19:04:47,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343189609] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:47,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:47,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:47,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457109601] [2024-02-07 19:04:47,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:47,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 19:04:47,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:47,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 19:04:47,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-02-07 19:04:47,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 70 [2024-02-07 19:04:47,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 88 transitions, 553 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 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) [2024-02-07 19:04:47,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:47,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 70 [2024-02-07 19:04:47,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:48,625 INFO L124 PetriNetUnfolderBase]: 9976/15512 cut-off events. [2024-02-07 19:04:48,625 INFO L125 PetriNetUnfolderBase]: For 33393/33406 co-relation queries the response was YES. [2024-02-07 19:04:48,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51421 conditions, 15512 events. 9976/15512 cut-off events. For 33393/33406 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 104011 event pairs, 1587 based on Foata normal form. 24/15426 useless extension candidates. Maximal degree in co-relation 51393. Up to 4085 conditions per place. [2024-02-07 19:04:48,789 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 224 selfloop transitions, 37 changer transitions 0/276 dead transitions. [2024-02-07 19:04:48,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 276 transitions, 2304 flow [2024-02-07 19:04:48,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-07 19:04:48,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-07 19:04:48,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 378 transitions. [2024-02-07 19:04:48,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4909090909090909 [2024-02-07 19:04:48,791 INFO L175 Difference]: Start difference. First operand has 96 places, 88 transitions, 553 flow. Second operand 11 states and 378 transitions. [2024-02-07 19:04:48,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 276 transitions, 2304 flow [2024-02-07 19:04:49,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 276 transitions, 1729 flow, removed 86 selfloop flow, removed 11 redundant places. [2024-02-07 19:04:49,105 INFO L231 Difference]: Finished difference. Result has 102 places, 109 transitions, 739 flow [2024-02-07 19:04:49,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=739, PETRI_PLACES=102, PETRI_TRANSITIONS=109} [2024-02-07 19:04:49,106 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 24 predicate places. [2024-02-07 19:04:49,106 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 109 transitions, 739 flow [2024-02-07 19:04:49,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 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) [2024-02-07 19:04:49,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:49,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:49,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-02-07 19:04:49,107 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:04:49,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:49,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1665181604, now seen corresponding path program 2 times [2024-02-07 19:04:49,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:49,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500359231] [2024-02-07 19:04:49,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:49,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:49,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:49,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:49,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500359231] [2024-02-07 19:04:49,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500359231] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:49,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:49,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:04:49,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791202431] [2024-02-07 19:04:49,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:49,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:49,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:49,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:49,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:49,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 70 [2024-02-07 19:04:49,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 109 transitions, 739 flow. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 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) [2024-02-07 19:04:49,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:49,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 70 [2024-02-07 19:04:49,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand