./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix028_power.opt_pso.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix028_power.opt_pso.opt_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix028_power.opt_pso.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix028_power.opt_pso.opt_rmo.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-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:31:05,633 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:31:05,708 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:31:05,712 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:31:05,712 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:31:05,736 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:31:05,736 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:31:05,737 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:31:05,737 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:31:05,740 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:31:05,741 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:31:05,741 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:31:05,742 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:31:05,743 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:31:05,743 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:31:05,743 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:31:05,743 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:31:05,744 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:31:05,744 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:31:05,744 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:31:05,744 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:31:05,745 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:31:05,745 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:31:05,745 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:31:05,745 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:31:05,746 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:31:05,746 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:31:05,746 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:31:05,746 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:31:05,747 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:31:05,748 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:31:05,748 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:31:05,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:31:05,748 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:31:05,748 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:31:05,749 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:31:05,749 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:31:05,749 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:31:05,749 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:31:05,749 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:31:05,750 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:31:05,750 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:31:05,750 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:31:05,750 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:31:05,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:31:05,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:31:05,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:31:05,988 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:31:05,989 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:31:05,990 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix028_power.opt_pso.opt_rmo.opt.yml/witness.yml [2024-06-28 01:31:06,155 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:31:06,155 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:31:06,156 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix028_power.opt_pso.opt_rmo.opt.i [2024-06-28 01:31:07,204 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:31:07,440 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:31:07,444 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix028_power.opt_pso.opt_rmo.opt.i [2024-06-28 01:31:07,459 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff7913277/bc5c79b7c5bb4567ac75817ec40ee956/FLAG74162eda4 [2024-06-28 01:31:07,469 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff7913277/bc5c79b7c5bb4567ac75817ec40ee956 [2024-06-28 01:31:07,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:31:07,472 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:31:07,474 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:31:07,475 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:31:07,478 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:31:07,479 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:31:06" (1/2) ... [2024-06-28 01:31:07,481 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ac2295 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:31:07, skipping insertion in model container [2024-06-28 01:31:07,481 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:31:06" (1/2) ... [2024-06-28 01:31:07,482 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@58d3c321 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:31:07, skipping insertion in model container [2024-06-28 01:31:07,483 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:31:07" (2/2) ... [2024-06-28 01:31:07,483 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ac2295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:31:07, skipping insertion in model container [2024-06-28 01:31:07,483 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:31:07" (2/2) ... [2024-06-28 01:31:07,484 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:31:07,549 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:31:07,550 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] (((((((((((((((((! multithreaded || x$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (z == 0 || z == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-28 01:31:07,550 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] (((((((((((((((((! multithreaded || x$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (z == 0 || z == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-28 01:31:07,551 INFO L97 edCorrectnessWitness]: Location invariant before [L828-L828] (((((((((((((((((! multithreaded || x$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (z == 0 || z == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-28 01:31:07,551 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:31:07,551 INFO L106 edCorrectnessWitness]: ghost_update [L824-L824] multithreaded = 1; [2024-06-28 01:31:07,589 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:31:07,756 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix028_power.opt_pso.opt_rmo.opt.i[966,979] [2024-06-28 01:31:07,921 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:31:07,935 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:31:07,967 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix028_power.opt_pso.opt_rmo.opt.i[966,979] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:31:08,070 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:31:08,145 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:31:08,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:31:08 WrapperNode [2024-06-28 01:31:08,145 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:31:08,146 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:31:08,146 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:31:08,146 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:31:08,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:31:08" (1/1) ... [2024-06-28 01:31:08,170 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:31:08" (1/1) ... [2024-06-28 01:31:08,203 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 140 [2024-06-28 01:31:08,204 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:31:08,205 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:31:08,206 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:31:08,206 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:31:08,214 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:31:08" (1/1) ... [2024-06-28 01:31:08,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:31:08" (1/1) ... [2024-06-28 01:31:08,217 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:31:08" (1/1) ... [2024-06-28 01:31:08,235 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 01:31:08,235 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:31:08" (1/1) ... [2024-06-28 01:31:08,236 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:31:08" (1/1) ... [2024-06-28 01:31:08,244 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:31:08" (1/1) ... [2024-06-28 01:31:08,251 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:31:08" (1/1) ... [2024-06-28 01:31:08,258 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:31:08" (1/1) ... [2024-06-28 01:31:08,260 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:31:08" (1/1) ... [2024-06-28 01:31:08,263 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:31:08,264 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:31:08,264 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:31:08,264 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:31:08,265 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:31:08" (1/1) ... [2024-06-28 01:31:08,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:31:08,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:31:08,321 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:31:08,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:31:08,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:31:08,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:31:08,372 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:31:08,372 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:31:08,372 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:31:08,372 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:31:08,372 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:31:08,373 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:31:08,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:31:08,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:31:08,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:31:08,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:31:08,375 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:31:08,479 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:31:08,481 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:31:08,837 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:31:08,837 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:31:08,968 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:31:08,968 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:31:08,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:31:08 BoogieIcfgContainer [2024-06-28 01:31:08,969 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:31:08,971 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:31:08,971 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:31:08,973 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:31:08,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:31:06" (1/4) ... [2024-06-28 01:31:08,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e13938 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:31:08, skipping insertion in model container [2024-06-28 01:31:08,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:31:07" (2/4) ... [2024-06-28 01:31:08,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e13938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:31:08, skipping insertion in model container [2024-06-28 01:31:08,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:31:08" (3/4) ... [2024-06-28 01:31:08,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e13938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:31:08, skipping insertion in model container [2024-06-28 01:31:08,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:31:08" (4/4) ... [2024-06-28 01:31:08,977 INFO L112 eAbstractionObserver]: Analyzing ICFG mix028_power.opt_pso.opt_rmo.opt.i [2024-06-28 01:31:08,990 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:31:08,991 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:31:08,991 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:31:09,035 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:31:09,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:31:09,091 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-28 01:31:09,092 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:31:09,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-28 01:31:09,096 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:31:09,099 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-06-28 01:31:09,108 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:31:09,112 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;@4fb1e4a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:31:09,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:31:09,115 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:31:09,115 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:31:09,116 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:31:09,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:09,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:31:09,117 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:09,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:09,121 INFO L85 PathProgramCache]: Analyzing trace with hash 355471896, now seen corresponding path program 1 times [2024-06-28 01:31:09,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:09,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226844412] [2024-06-28 01:31:09,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:09,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:09,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:09,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:09,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226844412] [2024-06-28 01:31:09,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226844412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:09,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:09,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:31:09,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027297739] [2024-06-28 01:31:09,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:09,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:31:09,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:09,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:31:09,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:31:10,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:31:10,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:10,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:10,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:31:10,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:10,740 INFO L124 PetriNetUnfolderBase]: 4271/6991 cut-off events. [2024-06-28 01:31:10,740 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-06-28 01:31:10,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13235 conditions, 6991 events. 4271/6991 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 45351 event pairs, 3544 based on Foata normal form. 211/6590 useless extension candidates. Maximal degree in co-relation 13223. Up to 6128 conditions per place. [2024-06-28 01:31:10,818 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 43 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-06-28 01:31:10,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 229 flow [2024-06-28 01:31:10,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:31:10,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:31:10,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-06-28 01:31:10,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6737588652482269 [2024-06-28 01:31:10,829 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 95 transitions. [2024-06-28 01:31:10,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 229 flow [2024-06-28 01:31:10,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 224 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:31:10,837 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 129 flow [2024-06-28 01:31:10,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-28 01:31:10,841 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-28 01:31:10,841 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 129 flow [2024-06-28 01:31:10,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:10,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:10,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:10,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:31:10,842 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:10,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:10,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1988337581, now seen corresponding path program 1 times [2024-06-28 01:31:10,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:10,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355751244] [2024-06-28 01:31:10,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:10,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:10,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:11,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:11,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:11,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355751244] [2024-06-28 01:31:11,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355751244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:11,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:11,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:31:11,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021751218] [2024-06-28 01:31:11,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:11,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:31:11,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:11,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:31:11,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:31:11,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:31:11,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:11,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:11,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:31:11,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:12,049 INFO L124 PetriNetUnfolderBase]: 5125/7589 cut-off events. [2024-06-28 01:31:12,050 INFO L125 PetriNetUnfolderBase]: For 953/953 co-relation queries the response was YES. [2024-06-28 01:31:12,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16669 conditions, 7589 events. 5125/7589 cut-off events. For 953/953 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 43716 event pairs, 2617 based on Foata normal form. 3/7279 useless extension candidates. Maximal degree in co-relation 16657. Up to 7290 conditions per place. [2024-06-28 01:31:12,086 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 56 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2024-06-28 01:31:12,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 75 transitions, 329 flow [2024-06-28 01:31:12,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:31:12,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:31:12,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-06-28 01:31:12,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-06-28 01:31:12,088 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 129 flow. Second operand 4 states and 120 transitions. [2024-06-28 01:31:12,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 75 transitions, 329 flow [2024-06-28 01:31:12,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 75 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:31:12,092 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 175 flow [2024-06-28 01:31:12,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-28 01:31:12,093 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-06-28 01:31:12,093 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 175 flow [2024-06-28 01:31:12,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:12,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:12,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:12,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:31:12,094 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:12,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:12,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1508921709, now seen corresponding path program 1 times [2024-06-28 01:31:12,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:12,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899730482] [2024-06-28 01:31:12,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:12,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:12,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:12,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:12,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899730482] [2024-06-28 01:31:12,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899730482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:12,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:12,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:31:12,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701229242] [2024-06-28 01:31:12,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:12,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:31:12,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:12,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:31:12,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:31:12,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:31:12,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 175 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:12,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:12,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:31:12,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:13,410 INFO L124 PetriNetUnfolderBase]: 5109/8208 cut-off events. [2024-06-28 01:31:13,410 INFO L125 PetriNetUnfolderBase]: For 2845/2845 co-relation queries the response was YES. [2024-06-28 01:31:13,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18858 conditions, 8208 events. 5109/8208 cut-off events. For 2845/2845 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 53126 event pairs, 2438 based on Foata normal form. 6/7654 useless extension candidates. Maximal degree in co-relation 18844. Up to 7239 conditions per place. [2024-06-28 01:31:13,454 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 68 selfloop transitions, 16 changer transitions 0/94 dead transitions. [2024-06-28 01:31:13,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 94 transitions, 488 flow [2024-06-28 01:31:13,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:31:13,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:31:13,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 144 transitions. [2024-06-28 01:31:13,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6127659574468085 [2024-06-28 01:31:13,456 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 175 flow. Second operand 5 states and 144 transitions. [2024-06-28 01:31:13,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 94 transitions, 488 flow [2024-06-28 01:31:13,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 94 transitions, 452 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 01:31:13,459 INFO L231 Difference]: Finished difference. Result has 61 places, 66 transitions, 298 flow [2024-06-28 01:31:13,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=61, PETRI_TRANSITIONS=66} [2024-06-28 01:31:13,460 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2024-06-28 01:31:13,460 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 66 transitions, 298 flow [2024-06-28 01:31:13,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:13,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:13,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:13,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:31:13,461 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:13,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:13,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1525700613, now seen corresponding path program 1 times [2024-06-28 01:31:13,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:13,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438522256] [2024-06-28 01:31:13,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:13,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:13,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:13,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:13,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438522256] [2024-06-28 01:31:13,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438522256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:13,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:13,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:31:13,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367476455] [2024-06-28 01:31:13,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:13,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:31:13,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:13,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:31:13,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:31:13,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 47 [2024-06-28 01:31:13,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 66 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:13,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:13,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 47 [2024-06-28 01:31:13,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:13,796 INFO L124 PetriNetUnfolderBase]: 1172/2484 cut-off events. [2024-06-28 01:31:13,797 INFO L125 PetriNetUnfolderBase]: For 1295/1449 co-relation queries the response was YES. [2024-06-28 01:31:13,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5395 conditions, 2484 events. 1172/2484 cut-off events. For 1295/1449 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 18818 event pairs, 379 based on Foata normal form. 21/2316 useless extension candidates. Maximal degree in co-relation 5378. Up to 1486 conditions per place. [2024-06-28 01:31:13,812 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 35 selfloop transitions, 7 changer transitions 0/73 dead transitions. [2024-06-28 01:31:13,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 73 transitions, 369 flow [2024-06-28 01:31:13,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:31:13,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:31:13,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-06-28 01:31:13,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7588652482269503 [2024-06-28 01:31:13,813 INFO L175 Difference]: Start difference. First operand has 61 places, 66 transitions, 298 flow. Second operand 3 states and 107 transitions. [2024-06-28 01:31:13,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 73 transitions, 369 flow [2024-06-28 01:31:13,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 73 transitions, 361 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-28 01:31:13,816 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 261 flow [2024-06-28 01:31:13,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2024-06-28 01:31:13,817 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 9 predicate places. [2024-06-28 01:31:13,817 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 261 flow [2024-06-28 01:31:13,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:13,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:13,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:13,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:31:13,818 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:13,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:13,819 INFO L85 PathProgramCache]: Analyzing trace with hash -2124838058, now seen corresponding path program 1 times [2024-06-28 01:31:13,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:13,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800430138] [2024-06-28 01:31:13,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:13,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:14,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:14,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:14,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800430138] [2024-06-28 01:31:14,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800430138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:14,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:14,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:31:14,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318129597] [2024-06-28 01:31:14,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:14,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:31:14,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:14,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:31:14,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:31:14,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:31:14,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 261 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:14,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:14,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:31:14,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:15,615 INFO L124 PetriNetUnfolderBase]: 4332/6921 cut-off events. [2024-06-28 01:31:15,616 INFO L125 PetriNetUnfolderBase]: For 6097/6097 co-relation queries the response was YES. [2024-06-28 01:31:15,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17190 conditions, 6921 events. 4332/6921 cut-off events. For 6097/6097 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 42398 event pairs, 2164 based on Foata normal form. 6/6708 useless extension candidates. Maximal degree in co-relation 17171. Up to 6106 conditions per place. [2024-06-28 01:31:15,643 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 70 selfloop transitions, 16 changer transitions 1/97 dead transitions. [2024-06-28 01:31:15,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 97 transitions, 533 flow [2024-06-28 01:31:15,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:31:15,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:31:15,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-06-28 01:31:15,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-06-28 01:31:15,645 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 261 flow. Second operand 6 states and 162 transitions. [2024-06-28 01:31:15,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 97 transitions, 533 flow [2024-06-28 01:31:15,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 97 transitions, 517 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:31:15,650 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 303 flow [2024-06-28 01:31:15,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2024-06-28 01:31:15,650 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 12 predicate places. [2024-06-28 01:31:15,651 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 303 flow [2024-06-28 01:31:15,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:15,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:15,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:15,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:31:15,652 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:15,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:15,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1614907468, now seen corresponding path program 1 times [2024-06-28 01:31:15,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:15,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926453793] [2024-06-28 01:31:15,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:15,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:16,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:16,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:16,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926453793] [2024-06-28 01:31:16,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926453793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:16,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:16,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:31:16,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792005127] [2024-06-28 01:31:16,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:16,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:31:16,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:16,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:31:16,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:31:16,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:31:16,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 303 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:16,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:16,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:31:16,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:16,850 INFO L124 PetriNetUnfolderBase]: 3603/6029 cut-off events. [2024-06-28 01:31:16,850 INFO L125 PetriNetUnfolderBase]: For 6606/6606 co-relation queries the response was YES. [2024-06-28 01:31:16,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15529 conditions, 6029 events. 3603/6029 cut-off events. For 6606/6606 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 38223 event pairs, 1918 based on Foata normal form. 2/5776 useless extension candidates. Maximal degree in co-relation 15508. Up to 5169 conditions per place. [2024-06-28 01:31:16,878 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 68 selfloop transitions, 9 changer transitions 0/86 dead transitions. [2024-06-28 01:31:16,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 86 transitions, 551 flow [2024-06-28 01:31:16,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:31:16,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:31:16,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-06-28 01:31:16,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502127659574468 [2024-06-28 01:31:16,880 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 303 flow. Second operand 5 states and 118 transitions. [2024-06-28 01:31:16,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 86 transitions, 551 flow [2024-06-28 01:31:16,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 86 transitions, 503 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 01:31:16,884 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 348 flow [2024-06-28 01:31:16,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=348, PETRI_PLACES=66, PETRI_TRANSITIONS=68} [2024-06-28 01:31:16,885 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2024-06-28 01:31:16,885 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 348 flow [2024-06-28 01:31:16,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:16,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:16,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:16,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:31:16,886 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:16,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:16,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1477477089, now seen corresponding path program 1 times [2024-06-28 01:31:16,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:16,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500016734] [2024-06-28 01:31:16,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:16,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:17,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:17,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:17,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500016734] [2024-06-28 01:31:17,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500016734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:17,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:17,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:31:17,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137183536] [2024-06-28 01:31:17,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:17,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:31:17,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:17,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:31:17,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:31:17,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:17,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 68 transitions, 348 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:17,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:17,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:17,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:18,194 INFO L124 PetriNetUnfolderBase]: 4376/7075 cut-off events. [2024-06-28 01:31:18,194 INFO L125 PetriNetUnfolderBase]: For 10328/10328 co-relation queries the response was YES. [2024-06-28 01:31:18,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19453 conditions, 7075 events. 4376/7075 cut-off events. For 10328/10328 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 43877 event pairs, 2290 based on Foata normal form. 3/6859 useless extension candidates. Maximal degree in co-relation 19429. Up to 6171 conditions per place. [2024-06-28 01:31:18,229 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 82 selfloop transitions, 19 changer transitions 0/109 dead transitions. [2024-06-28 01:31:18,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 109 transitions, 706 flow [2024-06-28 01:31:18,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:31:18,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:31:18,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 01:31:18,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2024-06-28 01:31:18,231 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 348 flow. Second operand 6 states and 143 transitions. [2024-06-28 01:31:18,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 109 transitions, 706 flow [2024-06-28 01:31:18,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 109 transitions, 689 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 01:31:18,238 INFO L231 Difference]: Finished difference. Result has 72 places, 80 transitions, 468 flow [2024-06-28 01:31:18,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=468, PETRI_PLACES=72, PETRI_TRANSITIONS=80} [2024-06-28 01:31:18,239 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 19 predicate places. [2024-06-28 01:31:18,239 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 80 transitions, 468 flow [2024-06-28 01:31:18,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:18,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:18,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:18,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:31:18,240 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:18,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:18,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1448602029, now seen corresponding path program 1 times [2024-06-28 01:31:18,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:18,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336573890] [2024-06-28 01:31:18,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:18,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:18,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:18,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:18,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336573890] [2024-06-28 01:31:18,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336573890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:18,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:18,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:31:18,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892028595] [2024-06-28 01:31:18,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:18,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:31:18,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:18,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:31:18,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:31:18,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:18,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 80 transitions, 468 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:18,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:18,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:18,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:19,691 INFO L124 PetriNetUnfolderBase]: 4760/7716 cut-off events. [2024-06-28 01:31:19,692 INFO L125 PetriNetUnfolderBase]: For 17056/17066 co-relation queries the response was YES. [2024-06-28 01:31:19,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23405 conditions, 7716 events. 4760/7716 cut-off events. For 17056/17066 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 48602 event pairs, 2414 based on Foata normal form. 2/7427 useless extension candidates. Maximal degree in co-relation 23377. Up to 6728 conditions per place. [2024-06-28 01:31:19,744 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 90 selfloop transitions, 13 changer transitions 0/114 dead transitions. [2024-06-28 01:31:19,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 114 transitions, 798 flow [2024-06-28 01:31:19,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:31:19,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:31:19,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-28 01:31:19,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-28 01:31:19,750 INFO L175 Difference]: Start difference. First operand has 72 places, 80 transitions, 468 flow. Second operand 6 states and 138 transitions. [2024-06-28 01:31:19,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 114 transitions, 798 flow [2024-06-28 01:31:19,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 114 transitions, 784 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-28 01:31:19,763 INFO L231 Difference]: Finished difference. Result has 78 places, 87 transitions, 559 flow [2024-06-28 01:31:19,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=559, PETRI_PLACES=78, PETRI_TRANSITIONS=87} [2024-06-28 01:31:19,765 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 25 predicate places. [2024-06-28 01:31:19,765 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 87 transitions, 559 flow [2024-06-28 01:31:19,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:19,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:19,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:19,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:31:19,766 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:19,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:19,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1442858349, now seen corresponding path program 2 times [2024-06-28 01:31:19,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:19,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916493871] [2024-06-28 01:31:19,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:19,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:20,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:20,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:20,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916493871] [2024-06-28 01:31:20,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916493871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:20,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:20,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:31:20,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633162468] [2024-06-28 01:31:20,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:20,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:31:20,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:20,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:31:20,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:31:20,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:20,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 87 transitions, 559 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:20,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:20,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:20,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:21,185 INFO L124 PetriNetUnfolderBase]: 4709/7585 cut-off events. [2024-06-28 01:31:21,186 INFO L125 PetriNetUnfolderBase]: For 21829/21865 co-relation queries the response was YES. [2024-06-28 01:31:21,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24550 conditions, 7585 events. 4709/7585 cut-off events. For 21829/21865 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 47320 event pairs, 2286 based on Foata normal form. 18/7346 useless extension candidates. Maximal degree in co-relation 24518. Up to 6621 conditions per place. [2024-06-28 01:31:21,233 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 88 selfloop transitions, 18 changer transitions 0/117 dead transitions. [2024-06-28 01:31:21,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 117 transitions, 883 flow [2024-06-28 01:31:21,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:31:21,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:31:21,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-28 01:31:21,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4929078014184397 [2024-06-28 01:31:21,235 INFO L175 Difference]: Start difference. First operand has 78 places, 87 transitions, 559 flow. Second operand 6 states and 139 transitions. [2024-06-28 01:31:21,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 117 transitions, 883 flow [2024-06-28 01:31:21,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 117 transitions, 846 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 01:31:21,247 INFO L231 Difference]: Finished difference. Result has 81 places, 90 transitions, 602 flow [2024-06-28 01:31:21,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=602, PETRI_PLACES=81, PETRI_TRANSITIONS=90} [2024-06-28 01:31:21,248 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 28 predicate places. [2024-06-28 01:31:21,248 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 90 transitions, 602 flow [2024-06-28 01:31:21,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:21,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:21,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:21,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:31:21,249 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:21,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:21,249 INFO L85 PathProgramCache]: Analyzing trace with hash -999559341, now seen corresponding path program 1 times [2024-06-28 01:31:21,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:21,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051572735] [2024-06-28 01:31:21,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:21,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:22,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:22,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:22,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051572735] [2024-06-28 01:31:22,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051572735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:22,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:22,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:22,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706234219] [2024-06-28 01:31:22,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:22,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:22,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:22,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:22,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:22,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:22,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 90 transitions, 602 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:22,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:22,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:22,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:22,918 INFO L124 PetriNetUnfolderBase]: 4430/7177 cut-off events. [2024-06-28 01:31:22,918 INFO L125 PetriNetUnfolderBase]: For 25344/25344 co-relation queries the response was YES. [2024-06-28 01:31:22,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24480 conditions, 7177 events. 4430/7177 cut-off events. For 25344/25344 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 44601 event pairs, 2160 based on Foata normal form. 3/6963 useless extension candidates. Maximal degree in co-relation 24447. Up to 6214 conditions per place. [2024-06-28 01:31:23,033 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 100 selfloop transitions, 24 changer transitions 0/132 dead transitions. [2024-06-28 01:31:23,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 132 transitions, 1030 flow [2024-06-28 01:31:23,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:23,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:23,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:31:23,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075987841945289 [2024-06-28 01:31:23,035 INFO L175 Difference]: Start difference. First operand has 81 places, 90 transitions, 602 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:31:23,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 132 transitions, 1030 flow [2024-06-28 01:31:23,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 132 transitions, 976 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 01:31:23,049 INFO L231 Difference]: Finished difference. Result has 84 places, 95 transitions, 654 flow [2024-06-28 01:31:23,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=654, PETRI_PLACES=84, PETRI_TRANSITIONS=95} [2024-06-28 01:31:23,049 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 31 predicate places. [2024-06-28 01:31:23,049 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 95 transitions, 654 flow [2024-06-28 01:31:23,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:23,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:23,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:23,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:31:23,050 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:23,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:23,051 INFO L85 PathProgramCache]: Analyzing trace with hash 2053995063, now seen corresponding path program 1 times [2024-06-28 01:31:23,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:23,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839872813] [2024-06-28 01:31:23,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:23,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:23,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:23,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:23,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839872813] [2024-06-28 01:31:23,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839872813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:23,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:23,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:23,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885478140] [2024-06-28 01:31:23,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:23,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:23,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:23,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:23,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:23,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:23,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 95 transitions, 654 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:23,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:23,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:23,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:24,644 INFO L124 PetriNetUnfolderBase]: 4855/7760 cut-off events. [2024-06-28 01:31:24,645 INFO L125 PetriNetUnfolderBase]: For 33691/33724 co-relation queries the response was YES. [2024-06-28 01:31:24,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28244 conditions, 7760 events. 4855/7760 cut-off events. For 33691/33724 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 47851 event pairs, 2068 based on Foata normal form. 7/7471 useless extension candidates. Maximal degree in co-relation 28210. Up to 6744 conditions per place. [2024-06-28 01:31:24,704 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 100 selfloop transitions, 29 changer transitions 0/141 dead transitions. [2024-06-28 01:31:24,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 141 transitions, 1079 flow [2024-06-28 01:31:24,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:24,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:24,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:31:24,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075987841945289 [2024-06-28 01:31:24,706 INFO L175 Difference]: Start difference. First operand has 84 places, 95 transitions, 654 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:31:24,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 141 transitions, 1079 flow [2024-06-28 01:31:24,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 141 transitions, 1009 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 01:31:24,728 INFO L231 Difference]: Finished difference. Result has 87 places, 104 transitions, 737 flow [2024-06-28 01:31:24,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=737, PETRI_PLACES=87, PETRI_TRANSITIONS=104} [2024-06-28 01:31:24,729 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 34 predicate places. [2024-06-28 01:31:24,729 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 104 transitions, 737 flow [2024-06-28 01:31:24,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:24,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:24,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:24,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:31:24,730 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:24,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:24,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1956989111, now seen corresponding path program 2 times [2024-06-28 01:31:24,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:24,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512036520] [2024-06-28 01:31:24,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:24,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:25,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:25,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:25,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512036520] [2024-06-28 01:31:25,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512036520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:25,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:25,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:25,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713693164] [2024-06-28 01:31:25,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:25,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:25,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:25,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:25,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:25,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:25,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 104 transitions, 737 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:25,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:25,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:25,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:26,318 INFO L124 PetriNetUnfolderBase]: 4929/7842 cut-off events. [2024-06-28 01:31:26,319 INFO L125 PetriNetUnfolderBase]: For 42602/42649 co-relation queries the response was YES. [2024-06-28 01:31:26,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30693 conditions, 7842 events. 4929/7842 cut-off events. For 42602/42649 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 48216 event pairs, 2002 based on Foata normal form. 7/7547 useless extension candidates. Maximal degree in co-relation 30657. Up to 6781 conditions per place. [2024-06-28 01:31:26,372 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 105 selfloop transitions, 37 changer transitions 0/154 dead transitions. [2024-06-28 01:31:26,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 154 transitions, 1301 flow [2024-06-28 01:31:26,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:26,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:26,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 01:31:26,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-28 01:31:26,375 INFO L175 Difference]: Start difference. First operand has 87 places, 104 transitions, 737 flow. Second operand 7 states and 168 transitions. [2024-06-28 01:31:26,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 154 transitions, 1301 flow [2024-06-28 01:31:26,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 154 transitions, 1230 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-28 01:31:26,397 INFO L231 Difference]: Finished difference. Result has 92 places, 116 transitions, 904 flow [2024-06-28 01:31:26,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=904, PETRI_PLACES=92, PETRI_TRANSITIONS=116} [2024-06-28 01:31:26,397 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 39 predicate places. [2024-06-28 01:31:26,397 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 116 transitions, 904 flow [2024-06-28 01:31:26,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:26,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:26,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:26,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:31:26,398 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:26,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:26,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1956988894, now seen corresponding path program 1 times [2024-06-28 01:31:26,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:26,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867733384] [2024-06-28 01:31:26,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:26,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:26,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:27,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:27,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:27,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867733384] [2024-06-28 01:31:27,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867733384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:27,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:27,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:27,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358582002] [2024-06-28 01:31:27,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:27,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:27,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:27,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:27,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:27,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:31:27,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 116 transitions, 904 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:27,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:27,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:31:27,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:27,971 INFO L124 PetriNetUnfolderBase]: 5375/8443 cut-off events. [2024-06-28 01:31:27,972 INFO L125 PetriNetUnfolderBase]: For 53376/53376 co-relation queries the response was YES. [2024-06-28 01:31:27,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34883 conditions, 8443 events. 5375/8443 cut-off events. For 53376/53376 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 51090 event pairs, 2100 based on Foata normal form. 3/8184 useless extension candidates. Maximal degree in co-relation 34845. Up to 7525 conditions per place. [2024-06-28 01:31:28,028 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 133 selfloop transitions, 28 changer transitions 0/168 dead transitions. [2024-06-28 01:31:28,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 168 transitions, 1547 flow [2024-06-28 01:31:28,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:28,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:28,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 01:31:28,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49544072948328266 [2024-06-28 01:31:28,030 INFO L175 Difference]: Start difference. First operand has 92 places, 116 transitions, 904 flow. Second operand 7 states and 163 transitions. [2024-06-28 01:31:28,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 168 transitions, 1547 flow [2024-06-28 01:31:28,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 168 transitions, 1451 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-28 01:31:28,072 INFO L231 Difference]: Finished difference. Result has 97 places, 128 transitions, 1031 flow [2024-06-28 01:31:28,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1031, PETRI_PLACES=97, PETRI_TRANSITIONS=128} [2024-06-28 01:31:28,073 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 44 predicate places. [2024-06-28 01:31:28,074 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 128 transitions, 1031 flow [2024-06-28 01:31:28,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:28,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:28,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:28,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:31:28,074 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:28,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:28,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1778935031, now seen corresponding path program 3 times [2024-06-28 01:31:28,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:28,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40124572] [2024-06-28 01:31:28,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:28,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:28,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:28,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:28,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40124572] [2024-06-28 01:31:28,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40124572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:28,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:28,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:28,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939157430] [2024-06-28 01:31:28,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:28,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:28,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:28,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:28,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:28,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:28,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 128 transitions, 1031 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:28,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:28,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:28,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:29,752 INFO L124 PetriNetUnfolderBase]: 5011/8042 cut-off events. [2024-06-28 01:31:29,752 INFO L125 PetriNetUnfolderBase]: For 62756/62796 co-relation queries the response was YES. [2024-06-28 01:31:29,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35093 conditions, 8042 events. 5011/8042 cut-off events. For 62756/62796 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 50010 event pairs, 1856 based on Foata normal form. 11/7771 useless extension candidates. Maximal degree in co-relation 35052. Up to 6788 conditions per place. [2024-06-28 01:31:29,808 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 116 selfloop transitions, 51 changer transitions 0/182 dead transitions. [2024-06-28 01:31:29,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 182 transitions, 1764 flow [2024-06-28 01:31:29,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:29,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:29,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:31:29,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075987841945289 [2024-06-28 01:31:29,810 INFO L175 Difference]: Start difference. First operand has 97 places, 128 transitions, 1031 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:31:29,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 182 transitions, 1764 flow [2024-06-28 01:31:29,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 182 transitions, 1710 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-28 01:31:29,856 INFO L231 Difference]: Finished difference. Result has 104 places, 146 transitions, 1372 flow [2024-06-28 01:31:29,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1372, PETRI_PLACES=104, PETRI_TRANSITIONS=146} [2024-06-28 01:31:29,857 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 51 predicate places. [2024-06-28 01:31:29,857 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 146 transitions, 1372 flow [2024-06-28 01:31:29,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:29,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:29,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:29,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:31:29,858 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:29,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:29,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1778934814, now seen corresponding path program 2 times [2024-06-28 01:31:29,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:29,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381159464] [2024-06-28 01:31:29,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:29,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:30,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:30,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:30,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381159464] [2024-06-28 01:31:30,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381159464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:30,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:30,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:30,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473053489] [2024-06-28 01:31:30,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:30,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:30,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:30,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:30,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:30,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:31:30,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 146 transitions, 1372 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:30,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:30,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:31:30,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:31,479 INFO L124 PetriNetUnfolderBase]: 5437/8553 cut-off events. [2024-06-28 01:31:31,480 INFO L125 PetriNetUnfolderBase]: For 77414/77444 co-relation queries the response was YES. [2024-06-28 01:31:31,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39857 conditions, 8553 events. 5437/8553 cut-off events. For 77414/77444 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 51966 event pairs, 2031 based on Foata normal form. 23/8305 useless extension candidates. Maximal degree in co-relation 39812. Up to 7395 conditions per place. [2024-06-28 01:31:31,542 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 149 selfloop transitions, 42 changer transitions 0/198 dead transitions. [2024-06-28 01:31:31,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 198 transitions, 2178 flow [2024-06-28 01:31:31,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:31,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:31,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 01:31:31,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045592705167173 [2024-06-28 01:31:31,546 INFO L175 Difference]: Start difference. First operand has 104 places, 146 transitions, 1372 flow. Second operand 7 states and 166 transitions. [2024-06-28 01:31:31,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 198 transitions, 2178 flow [2024-06-28 01:31:31,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 198 transitions, 2046 flow, removed 56 selfloop flow, removed 2 redundant places. [2024-06-28 01:31:31,624 INFO L231 Difference]: Finished difference. Result has 110 places, 154 transitions, 1468 flow [2024-06-28 01:31:31,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1468, PETRI_PLACES=110, PETRI_TRANSITIONS=154} [2024-06-28 01:31:31,641 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 57 predicate places. [2024-06-28 01:31:31,642 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 154 transitions, 1468 flow [2024-06-28 01:31:31,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:31,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:31,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:31,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:31:31,642 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:31,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:31,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1778667904, now seen corresponding path program 3 times [2024-06-28 01:31:31,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:31,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811522746] [2024-06-28 01:31:31,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:31,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:32,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:32,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:32,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811522746] [2024-06-28 01:31:32,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811522746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:32,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:32,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:32,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998923513] [2024-06-28 01:31:32,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:32,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:32,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:32,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:32,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:32,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:31:32,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 154 transitions, 1468 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:32,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:32,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:31:32,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:33,851 INFO L124 PetriNetUnfolderBase]: 5454/8579 cut-off events. [2024-06-28 01:31:33,851 INFO L125 PetriNetUnfolderBase]: For 88478/88508 co-relation queries the response was YES. [2024-06-28 01:31:33,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41917 conditions, 8579 events. 5454/8579 cut-off events. For 88478/88508 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 52174 event pairs, 2020 based on Foata normal form. 23/8330 useless extension candidates. Maximal degree in co-relation 41869. Up to 7415 conditions per place. [2024-06-28 01:31:33,931 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 141 selfloop transitions, 51 changer transitions 0/199 dead transitions. [2024-06-28 01:31:33,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 199 transitions, 2153 flow [2024-06-28 01:31:33,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:33,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:33,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-28 01:31:33,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49848024316109424 [2024-06-28 01:31:33,933 INFO L175 Difference]: Start difference. First operand has 110 places, 154 transitions, 1468 flow. Second operand 7 states and 164 transitions. [2024-06-28 01:31:33,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 199 transitions, 2153 flow [2024-06-28 01:31:34,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 199 transitions, 2027 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-28 01:31:34,019 INFO L231 Difference]: Finished difference. Result has 113 places, 158 transitions, 1522 flow [2024-06-28 01:31:34,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1354, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1522, PETRI_PLACES=113, PETRI_TRANSITIONS=158} [2024-06-28 01:31:34,019 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 60 predicate places. [2024-06-28 01:31:34,020 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 158 transitions, 1522 flow [2024-06-28 01:31:34,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:34,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:34,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:34,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:31:34,020 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:34,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:34,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1778657984, now seen corresponding path program 1 times [2024-06-28 01:31:34,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:34,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098632271] [2024-06-28 01:31:34,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:34,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:34,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:34,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:34,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098632271] [2024-06-28 01:31:34,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098632271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:34,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:34,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:31:34,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320733071] [2024-06-28 01:31:34,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:34,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:31:34,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:34,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:31:34,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:31:34,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:34,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 158 transitions, 1522 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:34,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:34,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:34,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:36,045 INFO L124 PetriNetUnfolderBase]: 4748/7668 cut-off events. [2024-06-28 01:31:36,045 INFO L125 PetriNetUnfolderBase]: For 78981/78981 co-relation queries the response was YES. [2024-06-28 01:31:36,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37022 conditions, 7668 events. 4748/7668 cut-off events. For 78981/78981 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 47786 event pairs, 1693 based on Foata normal form. 6/7439 useless extension candidates. Maximal degree in co-relation 36973. Up to 6611 conditions per place. [2024-06-28 01:31:36,097 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 174 selfloop transitions, 51 changer transitions 0/233 dead transitions. [2024-06-28 01:31:36,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 233 transitions, 2561 flow [2024-06-28 01:31:36,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:31:36,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:31:36,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 01:31:36,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:31:36,099 INFO L175 Difference]: Start difference. First operand has 113 places, 158 transitions, 1522 flow. Second operand 8 states and 188 transitions. [2024-06-28 01:31:36,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 233 transitions, 2561 flow [2024-06-28 01:31:36,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 233 transitions, 2458 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 01:31:36,168 INFO L231 Difference]: Finished difference. Result has 121 places, 193 transitions, 2026 flow [2024-06-28 01:31:36,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1428, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2026, PETRI_PLACES=121, PETRI_TRANSITIONS=193} [2024-06-28 01:31:36,169 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 68 predicate places. [2024-06-28 01:31:36,169 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 193 transitions, 2026 flow [2024-06-28 01:31:36,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:36,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:36,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:36,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:31:36,169 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:36,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:36,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1986330315, now seen corresponding path program 1 times [2024-06-28 01:31:36,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:36,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017182859] [2024-06-28 01:31:36,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:36,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:36,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:36,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:36,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017182859] [2024-06-28 01:31:36,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017182859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:36,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:36,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:31:36,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495271124] [2024-06-28 01:31:36,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:36,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:31:36,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:36,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:31:36,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:31:36,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:36,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 193 transitions, 2026 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:36,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:36,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:36,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:37,632 INFO L124 PetriNetUnfolderBase]: 4745/7657 cut-off events. [2024-06-28 01:31:37,632 INFO L125 PetriNetUnfolderBase]: For 91024/91024 co-relation queries the response was YES. [2024-06-28 01:31:37,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39224 conditions, 7657 events. 4745/7657 cut-off events. For 91024/91024 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 47579 event pairs, 1776 based on Foata normal form. 1/7423 useless extension candidates. Maximal degree in co-relation 39170. Up to 6751 conditions per place. [2024-06-28 01:31:37,710 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 182 selfloop transitions, 20 changer transitions 0/210 dead transitions. [2024-06-28 01:31:37,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 210 transitions, 2502 flow [2024-06-28 01:31:37,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:31:37,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:31:37,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-06-28 01:31:37,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765957446808511 [2024-06-28 01:31:37,712 INFO L175 Difference]: Start difference. First operand has 121 places, 193 transitions, 2026 flow. Second operand 5 states and 112 transitions. [2024-06-28 01:31:37,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 210 transitions, 2502 flow [2024-06-28 01:31:37,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 210 transitions, 2310 flow, removed 95 selfloop flow, removed 1 redundant places. [2024-06-28 01:31:37,858 INFO L231 Difference]: Finished difference. Result has 125 places, 196 transitions, 1934 flow [2024-06-28 01:31:37,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1834, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1934, PETRI_PLACES=125, PETRI_TRANSITIONS=196} [2024-06-28 01:31:37,859 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 72 predicate places. [2024-06-28 01:31:37,859 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 196 transitions, 1934 flow [2024-06-28 01:31:37,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:37,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:37,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:37,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:31:37,860 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:37,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:37,860 INFO L85 PathProgramCache]: Analyzing trace with hash -540958478, now seen corresponding path program 1 times [2024-06-28 01:31:37,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:37,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025836812] [2024-06-28 01:31:37,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:37,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:38,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:38,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:38,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025836812] [2024-06-28 01:31:38,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025836812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:38,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:38,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:31:38,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404864296] [2024-06-28 01:31:38,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:38,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:31:38,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:38,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:31:38,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:31:38,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:38,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 196 transitions, 1934 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:38,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:38,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:38,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:39,839 INFO L124 PetriNetUnfolderBase]: 5188/8222 cut-off events. [2024-06-28 01:31:39,840 INFO L125 PetriNetUnfolderBase]: For 108670/108818 co-relation queries the response was YES. [2024-06-28 01:31:39,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43123 conditions, 8222 events. 5188/8222 cut-off events. For 108670/108818 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 50607 event pairs, 1958 based on Foata normal form. 22/7933 useless extension candidates. Maximal degree in co-relation 43066. Up to 7113 conditions per place. [2024-06-28 01:31:39,910 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 178 selfloop transitions, 31 changer transitions 0/236 dead transitions. [2024-06-28 01:31:39,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 236 transitions, 2522 flow [2024-06-28 01:31:39,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:39,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:39,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 01:31:39,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045592705167173 [2024-06-28 01:31:39,913 INFO L175 Difference]: Start difference. First operand has 125 places, 196 transitions, 1934 flow. Second operand 7 states and 166 transitions. [2024-06-28 01:31:39,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 236 transitions, 2522 flow [2024-06-28 01:31:40,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 236 transitions, 2386 flow, removed 54 selfloop flow, removed 3 redundant places. [2024-06-28 01:31:40,056 INFO L231 Difference]: Finished difference. Result has 129 places, 199 transitions, 1938 flow [2024-06-28 01:31:40,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1938, PETRI_PLACES=129, PETRI_TRANSITIONS=199} [2024-06-28 01:31:40,057 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 76 predicate places. [2024-06-28 01:31:40,057 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 199 transitions, 1938 flow [2024-06-28 01:31:40,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:40,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:40,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:40,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:31:40,058 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:40,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:40,058 INFO L85 PathProgramCache]: Analyzing trace with hash -750661442, now seen corresponding path program 1 times [2024-06-28 01:31:40,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:40,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188826553] [2024-06-28 01:31:40,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:40,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:40,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:40,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:40,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188826553] [2024-06-28 01:31:40,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188826553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:40,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:40,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:31:40,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252546030] [2024-06-28 01:31:40,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:40,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:31:40,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:40,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:31:40,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:31:40,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:31:40,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 199 transitions, 1938 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:40,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:40,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:31:40,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:41,953 INFO L124 PetriNetUnfolderBase]: 5623/8795 cut-off events. [2024-06-28 01:31:41,953 INFO L125 PetriNetUnfolderBase]: For 116942/116942 co-relation queries the response was YES. [2024-06-28 01:31:41,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46200 conditions, 8795 events. 5623/8795 cut-off events. For 116942/116942 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 53143 event pairs, 2037 based on Foata normal form. 6/8534 useless extension candidates. Maximal degree in co-relation 46142. Up to 7709 conditions per place. [2024-06-28 01:31:42,035 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 208 selfloop transitions, 52 changer transitions 0/267 dead transitions. [2024-06-28 01:31:42,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 267 transitions, 2986 flow [2024-06-28 01:31:42,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:31:42,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:31:42,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 01:31:42,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-28 01:31:42,038 INFO L175 Difference]: Start difference. First operand has 129 places, 199 transitions, 1938 flow. Second operand 8 states and 192 transitions. [2024-06-28 01:31:42,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 267 transitions, 2986 flow [2024-06-28 01:31:42,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 267 transitions, 2920 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 01:31:42,150 INFO L231 Difference]: Finished difference. Result has 135 places, 219 transitions, 2327 flow [2024-06-28 01:31:42,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1872, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2327, PETRI_PLACES=135, PETRI_TRANSITIONS=219} [2024-06-28 01:31:42,151 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 82 predicate places. [2024-06-28 01:31:42,151 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 219 transitions, 2327 flow [2024-06-28 01:31:42,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:42,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:42,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:42,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:31:42,152 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:42,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:42,152 INFO L85 PathProgramCache]: Analyzing trace with hash -537112494, now seen corresponding path program 1 times [2024-06-28 01:31:42,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:42,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256972770] [2024-06-28 01:31:42,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:42,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:42,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:42,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:42,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256972770] [2024-06-28 01:31:42,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256972770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:42,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:42,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:31:42,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415953374] [2024-06-28 01:31:42,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:42,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:31:42,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:42,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:31:42,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:31:43,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:31:43,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 219 transitions, 2327 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:43,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:43,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:31:43,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:44,456 INFO L124 PetriNetUnfolderBase]: 5915/9187 cut-off events. [2024-06-28 01:31:44,456 INFO L125 PetriNetUnfolderBase]: For 147778/147778 co-relation queries the response was YES. [2024-06-28 01:31:44,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52707 conditions, 9187 events. 5915/9187 cut-off events. For 147778/147778 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 55231 event pairs, 1801 based on Foata normal form. 9/8931 useless extension candidates. Maximal degree in co-relation 52645. Up to 7686 conditions per place. [2024-06-28 01:31:44,545 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 211 selfloop transitions, 75 changer transitions 0/293 dead transitions. [2024-06-28 01:31:44,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 293 transitions, 3596 flow [2024-06-28 01:31:44,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:31:44,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:31:44,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 01:31:44,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159574468085106 [2024-06-28 01:31:44,548 INFO L175 Difference]: Start difference. First operand has 135 places, 219 transitions, 2327 flow. Second operand 8 states and 194 transitions. [2024-06-28 01:31:44,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 293 transitions, 3596 flow [2024-06-28 01:31:44,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 293 transitions, 3437 flow, removed 72 selfloop flow, removed 2 redundant places. [2024-06-28 01:31:44,699 INFO L231 Difference]: Finished difference. Result has 143 places, 241 transitions, 2753 flow [2024-06-28 01:31:44,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2184, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2753, PETRI_PLACES=143, PETRI_TRANSITIONS=241} [2024-06-28 01:31:44,699 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 90 predicate places. [2024-06-28 01:31:44,700 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 241 transitions, 2753 flow [2024-06-28 01:31:44,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:44,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:44,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:44,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:31:44,700 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:44,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:44,701 INFO L85 PathProgramCache]: Analyzing trace with hash 459695292, now seen corresponding path program 2 times [2024-06-28 01:31:44,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:44,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379323226] [2024-06-28 01:31:44,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:44,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:45,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:45,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:45,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379323226] [2024-06-28 01:31:45,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379323226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:45,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:45,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:31:45,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778593580] [2024-06-28 01:31:45,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:45,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:31:45,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:45,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:31:45,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:31:45,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:31:45,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 241 transitions, 2753 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:45,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:45,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:31:45,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:46,980 INFO L124 PetriNetUnfolderBase]: 6121/9458 cut-off events. [2024-06-28 01:31:46,980 INFO L125 PetriNetUnfolderBase]: For 170054/170054 co-relation queries the response was YES. [2024-06-28 01:31:47,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57227 conditions, 9458 events. 6121/9458 cut-off events. For 170054/170054 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 56586 event pairs, 1802 based on Foata normal form. 12/9208 useless extension candidates. Maximal degree in co-relation 57161. Up to 7757 conditions per place. [2024-06-28 01:31:47,067 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 215 selfloop transitions, 85 changer transitions 0/307 dead transitions. [2024-06-28 01:31:47,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 307 transitions, 3979 flow [2024-06-28 01:31:47,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:31:47,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:31:47,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 01:31:47,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-28 01:31:47,069 INFO L175 Difference]: Start difference. First operand has 143 places, 241 transitions, 2753 flow. Second operand 8 states and 196 transitions. [2024-06-28 01:31:47,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 307 transitions, 3979 flow [2024-06-28 01:31:47,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 307 transitions, 3791 flow, removed 76 selfloop flow, removed 3 redundant places. [2024-06-28 01:31:47,297 INFO L231 Difference]: Finished difference. Result has 149 places, 257 transitions, 3073 flow [2024-06-28 01:31:47,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2587, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3073, PETRI_PLACES=149, PETRI_TRANSITIONS=257} [2024-06-28 01:31:47,298 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 96 predicate places. [2024-06-28 01:31:47,298 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 257 transitions, 3073 flow [2024-06-28 01:31:47,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:47,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:47,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:47,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:31:47,298 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:47,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:47,299 INFO L85 PathProgramCache]: Analyzing trace with hash -746913542, now seen corresponding path program 3 times [2024-06-28 01:31:47,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:47,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685663460] [2024-06-28 01:31:47,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:47,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:47,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:47,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:47,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685663460] [2024-06-28 01:31:47,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685663460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:47,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:47,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:31:47,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946977381] [2024-06-28 01:31:47,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:47,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:31:47,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:47,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:31:47,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:31:48,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:31:48,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 257 transitions, 3073 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:48,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:48,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:31:48,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:49,415 INFO L124 PetriNetUnfolderBase]: 6234/9609 cut-off events. [2024-06-28 01:31:49,415 INFO L125 PetriNetUnfolderBase]: For 182827/182827 co-relation queries the response was YES. [2024-06-28 01:31:49,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60118 conditions, 9609 events. 6234/9609 cut-off events. For 182827/182827 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 57430 event pairs, 1887 based on Foata normal form. 6/9353 useless extension candidates. Maximal degree in co-relation 60049. Up to 7842 conditions per place. [2024-06-28 01:31:49,519 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 224 selfloop transitions, 90 changer transitions 0/321 dead transitions. [2024-06-28 01:31:49,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 321 transitions, 4305 flow [2024-06-28 01:31:49,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:31:49,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:31:49,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:31:49,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186170212765957 [2024-06-28 01:31:49,521 INFO L175 Difference]: Start difference. First operand has 149 places, 257 transitions, 3073 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:31:49,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 321 transitions, 4305 flow [2024-06-28 01:31:49,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 321 transitions, 4113 flow, removed 78 selfloop flow, removed 3 redundant places. [2024-06-28 01:31:49,935 INFO L231 Difference]: Finished difference. Result has 156 places, 273 transitions, 3436 flow [2024-06-28 01:31:49,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2889, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3436, PETRI_PLACES=156, PETRI_TRANSITIONS=273} [2024-06-28 01:31:49,936 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 103 predicate places. [2024-06-28 01:31:49,936 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 273 transitions, 3436 flow [2024-06-28 01:31:49,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:49,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:49,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:49,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:31:49,936 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:49,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:49,937 INFO L85 PathProgramCache]: Analyzing trace with hash 696167570, now seen corresponding path program 2 times [2024-06-28 01:31:49,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:49,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299280193] [2024-06-28 01:31:49,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:49,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:50,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:50,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:50,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299280193] [2024-06-28 01:31:50,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299280193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:50,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:50,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:31:50,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780408514] [2024-06-28 01:31:50,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:50,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:31:50,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:50,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:31:50,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:31:50,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:31:50,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 273 transitions, 3436 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:50,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:50,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:31:50,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:52,178 INFO L124 PetriNetUnfolderBase]: 6417/9847 cut-off events. [2024-06-28 01:31:52,178 INFO L125 PetriNetUnfolderBase]: For 199315/199324 co-relation queries the response was YES. [2024-06-28 01:31:52,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63470 conditions, 9847 events. 6417/9847 cut-off events. For 199315/199324 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 58933 event pairs, 1715 based on Foata normal form. 7/9594 useless extension candidates. Maximal degree in co-relation 63397. Up to 7692 conditions per place. [2024-06-28 01:31:52,277 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 201 selfloop transitions, 149 changer transitions 0/357 dead transitions. [2024-06-28 01:31:52,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 357 transitions, 5181 flow [2024-06-28 01:31:52,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:31:52,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:31:52,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:31:52,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-28 01:31:52,278 INFO L175 Difference]: Start difference. First operand has 156 places, 273 transitions, 3436 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:31:52,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 357 transitions, 5181 flow [2024-06-28 01:31:52,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 357 transitions, 4990 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-28 01:31:52,594 INFO L231 Difference]: Finished difference. Result has 163 places, 303 transitions, 4285 flow [2024-06-28 01:31:52,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3249, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4285, PETRI_PLACES=163, PETRI_TRANSITIONS=303} [2024-06-28 01:31:52,594 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 110 predicate places. [2024-06-28 01:31:52,594 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 303 transitions, 4285 flow [2024-06-28 01:31:52,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:52,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:52,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:52,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:31:52,595 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:52,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:52,595 INFO L85 PathProgramCache]: Analyzing trace with hash 695870900, now seen corresponding path program 3 times [2024-06-28 01:31:52,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:52,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481014535] [2024-06-28 01:31:52,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:52,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:53,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:53,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:53,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481014535] [2024-06-28 01:31:53,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481014535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:53,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:53,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:31:53,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160419391] [2024-06-28 01:31:53,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:53,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:31:53,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:53,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:31:53,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:31:53,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:31:53,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 303 transitions, 4285 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:53,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:53,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:31:53,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:54,923 INFO L124 PetriNetUnfolderBase]: 6631/10126 cut-off events. [2024-06-28 01:31:54,923 INFO L125 PetriNetUnfolderBase]: For 237480/237489 co-relation queries the response was YES. [2024-06-28 01:31:54,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70624 conditions, 10126 events. 6631/10126 cut-off events. For 237480/237489 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 60204 event pairs, 1721 based on Foata normal form. 13/9884 useless extension candidates. Maximal degree in co-relation 70547. Up to 8169 conditions per place. [2024-06-28 01:31:55,047 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 228 selfloop transitions, 135 changer transitions 0/370 dead transitions. [2024-06-28 01:31:55,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 370 transitions, 5844 flow [2024-06-28 01:31:55,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:31:55,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:31:55,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 01:31:55,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526595744680851 [2024-06-28 01:31:55,056 INFO L175 Difference]: Start difference. First operand has 163 places, 303 transitions, 4285 flow. Second operand 8 states and 198 transitions. [2024-06-28 01:31:55,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 370 transitions, 5844 flow [2024-06-28 01:31:55,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 370 transitions, 5632 flow, removed 92 selfloop flow, removed 2 redundant places. [2024-06-28 01:31:55,521 INFO L231 Difference]: Finished difference. Result has 169 places, 314 transitions, 4634 flow [2024-06-28 01:31:55,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4111, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4634, PETRI_PLACES=169, PETRI_TRANSITIONS=314} [2024-06-28 01:31:55,522 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 116 predicate places. [2024-06-28 01:31:55,522 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 314 transitions, 4634 flow [2024-06-28 01:31:55,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:55,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:55,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:55,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:31:55,523 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:55,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:55,524 INFO L85 PathProgramCache]: Analyzing trace with hash 695870652, now seen corresponding path program 4 times [2024-06-28 01:31:55,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:55,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423715560] [2024-06-28 01:31:55,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:55,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:56,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:56,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:56,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423715560] [2024-06-28 01:31:56,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423715560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:56,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:56,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:31:56,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236935864] [2024-06-28 01:31:56,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:56,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:31:56,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:56,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:31:56,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:31:56,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:31:56,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 314 transitions, 4634 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:56,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:56,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:31:56,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:57,739 INFO L124 PetriNetUnfolderBase]: 6725/10192 cut-off events. [2024-06-28 01:31:57,739 INFO L125 PetriNetUnfolderBase]: For 248074/248083 co-relation queries the response was YES. [2024-06-28 01:31:57,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72311 conditions, 10192 events. 6725/10192 cut-off events. For 248074/248083 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 60000 event pairs, 1715 based on Foata normal form. 16/9973 useless extension candidates. Maximal degree in co-relation 72232. Up to 7575 conditions per place. [2024-06-28 01:31:57,853 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 205 selfloop transitions, 174 changer transitions 0/386 dead transitions. [2024-06-28 01:31:57,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 386 transitions, 6273 flow [2024-06-28 01:31:57,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:31:57,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:31:57,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:31:57,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-06-28 01:31:57,855 INFO L175 Difference]: Start difference. First operand has 169 places, 314 transitions, 4634 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:31:57,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 386 transitions, 6273 flow [2024-06-28 01:31:58,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 386 transitions, 5847 flow, removed 119 selfloop flow, removed 4 redundant places. [2024-06-28 01:31:58,432 INFO L231 Difference]: Finished difference. Result has 174 places, 334 transitions, 5051 flow [2024-06-28 01:31:58,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4276, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5051, PETRI_PLACES=174, PETRI_TRANSITIONS=334} [2024-06-28 01:31:58,433 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 121 predicate places. [2024-06-28 01:31:58,433 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 334 transitions, 5051 flow [2024-06-28 01:31:58,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:58,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:58,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:58,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:31:58,434 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:58,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:58,434 INFO L85 PathProgramCache]: Analyzing trace with hash 687589932, now seen corresponding path program 5 times [2024-06-28 01:31:58,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:58,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966760439] [2024-06-28 01:31:58,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:58,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:59,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:59,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:59,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966760439] [2024-06-28 01:31:59,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966760439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:59,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:59,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:31:59,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61990795] [2024-06-28 01:31:59,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:59,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:31:59,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:59,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:31:59,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:31:59,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:31:59,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 334 transitions, 5051 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:59,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:59,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:31:59,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:00,814 INFO L124 PetriNetUnfolderBase]: 6837/10353 cut-off events. [2024-06-28 01:32:00,815 INFO L125 PetriNetUnfolderBase]: For 269341/269350 co-relation queries the response was YES. [2024-06-28 01:32:00,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75152 conditions, 10353 events. 6837/10353 cut-off events. For 269341/269350 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 61028 event pairs, 1776 based on Foata normal form. 10/10125 useless extension candidates. Maximal degree in co-relation 75071. Up to 7637 conditions per place. [2024-06-28 01:32:00,929 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 235 selfloop transitions, 166 changer transitions 0/408 dead transitions. [2024-06-28 01:32:00,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 408 transitions, 6894 flow [2024-06-28 01:32:00,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:00,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:00,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 01:32:00,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345744680851063 [2024-06-28 01:32:00,931 INFO L175 Difference]: Start difference. First operand has 174 places, 334 transitions, 5051 flow. Second operand 8 states and 201 transitions. [2024-06-28 01:32:00,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 408 transitions, 6894 flow [2024-06-28 01:32:01,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 408 transitions, 6704 flow, removed 81 selfloop flow, removed 2 redundant places. [2024-06-28 01:32:01,497 INFO L231 Difference]: Finished difference. Result has 183 places, 357 transitions, 5871 flow [2024-06-28 01:32:01,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4865, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5871, PETRI_PLACES=183, PETRI_TRANSITIONS=357} [2024-06-28 01:32:01,498 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 130 predicate places. [2024-06-28 01:32:01,498 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 357 transitions, 5871 flow [2024-06-28 01:32:01,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:01,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:01,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:01,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:32:01,498 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:01,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:01,499 INFO L85 PathProgramCache]: Analyzing trace with hash 687596442, now seen corresponding path program 6 times [2024-06-28 01:32:01,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:01,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146200346] [2024-06-28 01:32:01,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:01,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:02,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:02,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:02,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146200346] [2024-06-28 01:32:02,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146200346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:02,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:02,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:02,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654912353] [2024-06-28 01:32:02,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:02,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:02,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:02,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:02,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:02,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:32:02,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 357 transitions, 5871 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:02,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:02,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:32:02,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:04,045 INFO L124 PetriNetUnfolderBase]: 6819/10331 cut-off events. [2024-06-28 01:32:04,045 INFO L125 PetriNetUnfolderBase]: For 278539/278548 co-relation queries the response was YES. [2024-06-28 01:32:04,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76877 conditions, 10331 events. 6819/10331 cut-off events. For 278539/278548 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 60966 event pairs, 1791 based on Foata normal form. 16/10109 useless extension candidates. Maximal degree in co-relation 76791. Up to 7635 conditions per place. [2024-06-28 01:32:04,207 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 236 selfloop transitions, 165 changer transitions 0/408 dead transitions. [2024-06-28 01:32:04,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 408 transitions, 7228 flow [2024-06-28 01:32:04,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:04,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:04,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 01:32:04,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345744680851063 [2024-06-28 01:32:04,209 INFO L175 Difference]: Start difference. First operand has 183 places, 357 transitions, 5871 flow. Second operand 8 states and 201 transitions. [2024-06-28 01:32:04,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 408 transitions, 7228 flow [2024-06-28 01:32:04,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 408 transitions, 6838 flow, removed 117 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:04,823 INFO L231 Difference]: Finished difference. Result has 189 places, 359 transitions, 5931 flow [2024-06-28 01:32:04,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5489, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5931, PETRI_PLACES=189, PETRI_TRANSITIONS=359} [2024-06-28 01:32:04,824 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 136 predicate places. [2024-06-28 01:32:04,825 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 359 transitions, 5931 flow [2024-06-28 01:32:04,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:04,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:04,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:04,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:32:04,825 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:04,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:04,826 INFO L85 PathProgramCache]: Analyzing trace with hash 687596690, now seen corresponding path program 4 times [2024-06-28 01:32:04,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:04,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046455966] [2024-06-28 01:32:04,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:04,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:04,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:05,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:05,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:05,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046455966] [2024-06-28 01:32:05,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046455966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:05,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:05,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:05,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803222818] [2024-06-28 01:32:05,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:05,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:05,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:05,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:05,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:05,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:32:05,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 359 transitions, 5931 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:05,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:05,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:32:05,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:07,530 INFO L124 PetriNetUnfolderBase]: 6795/10294 cut-off events. [2024-06-28 01:32:07,530 INFO L125 PetriNetUnfolderBase]: For 276305/276314 co-relation queries the response was YES. [2024-06-28 01:32:07,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75774 conditions, 10294 events. 6795/10294 cut-off events. For 276305/276314 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 60658 event pairs, 1753 based on Foata normal form. 13/10070 useless extension candidates. Maximal degree in co-relation 75686. Up to 8343 conditions per place. [2024-06-28 01:32:07,662 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 268 selfloop transitions, 133 changer transitions 0/408 dead transitions. [2024-06-28 01:32:07,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 408 transitions, 7159 flow [2024-06-28 01:32:07,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:07,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:07,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 01:32:07,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-28 01:32:07,664 INFO L175 Difference]: Start difference. First operand has 189 places, 359 transitions, 5931 flow. Second operand 8 states and 196 transitions. [2024-06-28 01:32:07,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 408 transitions, 7159 flow [2024-06-28 01:32:08,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 408 transitions, 6556 flow, removed 139 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:08,286 INFO L231 Difference]: Finished difference. Result has 192 places, 359 transitions, 5608 flow [2024-06-28 01:32:08,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5328, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5608, PETRI_PLACES=192, PETRI_TRANSITIONS=359} [2024-06-28 01:32:08,289 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 139 predicate places. [2024-06-28 01:32:08,289 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 359 transitions, 5608 flow [2024-06-28 01:32:08,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:08,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:08,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:08,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:32:08,290 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:08,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:08,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1446699482, now seen corresponding path program 1 times [2024-06-28 01:32:08,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:08,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902465788] [2024-06-28 01:32:08,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:08,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:08,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:08,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:08,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902465788] [2024-06-28 01:32:08,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902465788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:08,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:08,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:08,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945851471] [2024-06-28 01:32:08,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:08,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:08,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:08,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:08,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:08,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:08,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 359 transitions, 5608 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:08,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:08,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:08,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:10,575 INFO L124 PetriNetUnfolderBase]: 6057/9466 cut-off events. [2024-06-28 01:32:10,575 INFO L125 PetriNetUnfolderBase]: For 240040/240040 co-relation queries the response was YES. [2024-06-28 01:32:10,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68018 conditions, 9466 events. 6057/9466 cut-off events. For 240040/240040 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 57598 event pairs, 1683 based on Foata normal form. 2/9235 useless extension candidates. Maximal degree in co-relation 67929. Up to 8507 conditions per place. [2024-06-28 01:32:10,710 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 352 selfloop transitions, 23 changer transitions 0/383 dead transitions. [2024-06-28 01:32:10,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 383 transitions, 6474 flow [2024-06-28 01:32:10,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:10,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:10,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-28 01:32:10,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716312056737589 [2024-06-28 01:32:10,712 INFO L175 Difference]: Start difference. First operand has 192 places, 359 transitions, 5608 flow. Second operand 6 states and 133 transitions. [2024-06-28 01:32:10,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 383 transitions, 6474 flow [2024-06-28 01:32:11,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 383 transitions, 6072 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-28 01:32:11,271 INFO L231 Difference]: Finished difference. Result has 192 places, 362 transitions, 5306 flow [2024-06-28 01:32:11,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5206, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5306, PETRI_PLACES=192, PETRI_TRANSITIONS=362} [2024-06-28 01:32:11,272 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 139 predicate places. [2024-06-28 01:32:11,272 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 362 transitions, 5306 flow [2024-06-28 01:32:11,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:11,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:11,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:11,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:32:11,273 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:11,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:11,273 INFO L85 PathProgramCache]: Analyzing trace with hash 410095876, now seen corresponding path program 1 times [2024-06-28 01:32:11,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:11,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861339588] [2024-06-28 01:32:11,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:11,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:12,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:12,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:12,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861339588] [2024-06-28 01:32:12,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861339588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:12,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:12,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:32:12,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618948100] [2024-06-28 01:32:12,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:12,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:32:12,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:12,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:32:12,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:32:12,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:12,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 362 transitions, 5306 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:12,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:12,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:12,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:14,425 INFO L124 PetriNetUnfolderBase]: 6499/9985 cut-off events. [2024-06-28 01:32:14,426 INFO L125 PetriNetUnfolderBase]: For 278043/278144 co-relation queries the response was YES. [2024-06-28 01:32:14,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72353 conditions, 9985 events. 6499/9985 cut-off events. For 278043/278144 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 60115 event pairs, 1397 based on Foata normal form. 44/9754 useless extension candidates. Maximal degree in co-relation 72263. Up to 8639 conditions per place. [2024-06-28 01:32:14,576 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 323 selfloop transitions, 30 changer transitions 0/413 dead transitions. [2024-06-28 01:32:14,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 413 transitions, 6254 flow [2024-06-28 01:32:14,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:14,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:14,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 01:32:14,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973404255319149 [2024-06-28 01:32:14,578 INFO L175 Difference]: Start difference. First operand has 192 places, 362 transitions, 5306 flow. Second operand 8 states and 187 transitions. [2024-06-28 01:32:14,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 413 transitions, 6254 flow [2024-06-28 01:32:15,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 413 transitions, 6174 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:15,099 INFO L231 Difference]: Finished difference. Result has 197 places, 369 transitions, 5429 flow [2024-06-28 01:32:15,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5226, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5429, PETRI_PLACES=197, PETRI_TRANSITIONS=369} [2024-06-28 01:32:15,100 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 144 predicate places. [2024-06-28 01:32:15,100 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 369 transitions, 5429 flow [2024-06-28 01:32:15,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:15,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:15,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:15,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:32:15,100 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:15,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:15,101 INFO L85 PathProgramCache]: Analyzing trace with hash 410157256, now seen corresponding path program 2 times [2024-06-28 01:32:15,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:15,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956596896] [2024-06-28 01:32:15,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:15,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:16,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:16,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:16,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956596896] [2024-06-28 01:32:16,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956596896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:16,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:16,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:32:16,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583851071] [2024-06-28 01:32:16,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:16,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:32:16,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:16,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:32:16,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:32:16,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:16,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 369 transitions, 5429 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:16,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:16,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:16,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:18,222 INFO L124 PetriNetUnfolderBase]: 6532/10061 cut-off events. [2024-06-28 01:32:18,223 INFO L125 PetriNetUnfolderBase]: For 295950/296049 co-relation queries the response was YES. [2024-06-28 01:32:18,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73995 conditions, 10061 events. 6532/10061 cut-off events. For 295950/296049 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 60850 event pairs, 1681 based on Foata normal form. 44/9822 useless extension candidates. Maximal degree in co-relation 73903. Up to 8681 conditions per place. [2024-06-28 01:32:18,351 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 323 selfloop transitions, 34 changer transitions 0/417 dead transitions. [2024-06-28 01:32:18,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 417 transitions, 6387 flow [2024-06-28 01:32:18,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:18,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:18,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 01:32:18,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:32:18,353 INFO L175 Difference]: Start difference. First operand has 197 places, 369 transitions, 5429 flow. Second operand 8 states and 188 transitions. [2024-06-28 01:32:18,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 417 transitions, 6387 flow [2024-06-28 01:32:18,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 417 transitions, 6249 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:18,886 INFO L231 Difference]: Finished difference. Result has 201 places, 372 transitions, 5472 flow [2024-06-28 01:32:18,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5291, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5472, PETRI_PLACES=201, PETRI_TRANSITIONS=372} [2024-06-28 01:32:18,887 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 148 predicate places. [2024-06-28 01:32:18,887 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 372 transitions, 5472 flow [2024-06-28 01:32:18,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:18,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:18,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:18,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:32:18,888 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:18,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:18,888 INFO L85 PathProgramCache]: Analyzing trace with hash 412838601, now seen corresponding path program 1 times [2024-06-28 01:32:18,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:18,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635315300] [2024-06-28 01:32:18,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:18,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:19,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:19,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:19,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635315300] [2024-06-28 01:32:19,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635315300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:19,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:19,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:32:19,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304075480] [2024-06-28 01:32:19,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:19,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:32:19,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:19,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:32:19,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:32:19,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:32:19,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 372 transitions, 5472 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:19,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:19,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:32:19,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:21,686 INFO L124 PetriNetUnfolderBase]: 6871/10465 cut-off events. [2024-06-28 01:32:21,687 INFO L125 PetriNetUnfolderBase]: For 312824/312824 co-relation queries the response was YES. [2024-06-28 01:32:21,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76946 conditions, 10465 events. 6871/10465 cut-off events. For 312824/312824 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 62269 event pairs, 1820 based on Foata normal form. 3/10212 useless extension candidates. Maximal degree in co-relation 76853. Up to 9345 conditions per place. [2024-06-28 01:32:21,799 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 364 selfloop transitions, 71 changer transitions 0/442 dead transitions. [2024-06-28 01:32:21,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 442 transitions, 7191 flow [2024-06-28 01:32:21,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:21,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:21,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 01:32:21,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132978723404256 [2024-06-28 01:32:21,801 INFO L175 Difference]: Start difference. First operand has 201 places, 372 transitions, 5472 flow. Second operand 8 states and 193 transitions. [2024-06-28 01:32:21,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 442 transitions, 7191 flow [2024-06-28 01:32:22,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 442 transitions, 6927 flow, removed 93 selfloop flow, removed 6 redundant places. [2024-06-28 01:32:22,313 INFO L231 Difference]: Finished difference. Result has 205 places, 393 transitions, 5941 flow [2024-06-28 01:32:22,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5263, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5941, PETRI_PLACES=205, PETRI_TRANSITIONS=393} [2024-06-28 01:32:22,314 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 152 predicate places. [2024-06-28 01:32:22,314 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 393 transitions, 5941 flow [2024-06-28 01:32:22,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:22,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:22,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:22,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:32:22,315 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:22,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:22,315 INFO L85 PathProgramCache]: Analyzing trace with hash 529167496, now seen corresponding path program 3 times [2024-06-28 01:32:22,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:22,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212896650] [2024-06-28 01:32:22,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:22,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:23,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:23,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:23,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212896650] [2024-06-28 01:32:23,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212896650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:23,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:23,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:32:23,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845068025] [2024-06-28 01:32:23,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:23,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:32:23,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:23,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:32:23,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:32:23,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:23,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 393 transitions, 5941 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:23,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:23,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:23,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:25,309 INFO L124 PetriNetUnfolderBase]: 6577/10131 cut-off events. [2024-06-28 01:32:25,310 INFO L125 PetriNetUnfolderBase]: For 324572/324665 co-relation queries the response was YES. [2024-06-28 01:32:25,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75844 conditions, 10131 events. 6577/10131 cut-off events. For 324572/324665 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 61281 event pairs, 1641 based on Foata normal form. 44/9890 useless extension candidates. Maximal degree in co-relation 75748. Up to 8701 conditions per place. [2024-06-28 01:32:25,673 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 328 selfloop transitions, 49 changer transitions 0/440 dead transitions. [2024-06-28 01:32:25,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 440 transitions, 6964 flow [2024-06-28 01:32:25,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:25,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:25,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 01:32:25,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:32:25,675 INFO L175 Difference]: Start difference. First operand has 205 places, 393 transitions, 5941 flow. Second operand 8 states and 188 transitions. [2024-06-28 01:32:25,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 440 transitions, 6964 flow [2024-06-28 01:32:26,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 440 transitions, 6840 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:26,244 INFO L231 Difference]: Finished difference. Result has 210 places, 396 transitions, 6043 flow [2024-06-28 01:32:26,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5827, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6043, PETRI_PLACES=210, PETRI_TRANSITIONS=396} [2024-06-28 01:32:26,245 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 157 predicate places. [2024-06-28 01:32:26,245 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 396 transitions, 6043 flow [2024-06-28 01:32:26,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:26,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:26,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:26,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:32:26,246 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:26,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:26,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1679272717, now seen corresponding path program 1 times [2024-06-28 01:32:26,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:26,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904909476] [2024-06-28 01:32:26,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:26,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:27,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:27,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:27,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904909476] [2024-06-28 01:32:27,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904909476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:27,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:27,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:32:27,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741645723] [2024-06-28 01:32:27,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:27,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:32:27,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:27,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:32:27,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:32:27,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:32:27,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 396 transitions, 6043 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:27,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:27,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:32:27,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:29,362 INFO L124 PetriNetUnfolderBase]: 6999/10591 cut-off events. [2024-06-28 01:32:29,362 INFO L125 PetriNetUnfolderBase]: For 355343/355343 co-relation queries the response was YES. [2024-06-28 01:32:29,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80352 conditions, 10591 events. 6999/10591 cut-off events. For 355343/355343 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 62584 event pairs, 1817 based on Foata normal form. 6/10361 useless extension candidates. Maximal degree in co-relation 80255. Up to 9660 conditions per place. [2024-06-28 01:32:29,518 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 409 selfloop transitions, 49 changer transitions 0/465 dead transitions. [2024-06-28 01:32:29,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 465 transitions, 7659 flow [2024-06-28 01:32:29,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:29,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:29,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-28 01:32:29,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491725768321513 [2024-06-28 01:32:29,520 INFO L175 Difference]: Start difference. First operand has 210 places, 396 transitions, 6043 flow. Second operand 9 states and 208 transitions. [2024-06-28 01:32:29,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 465 transitions, 7659 flow [2024-06-28 01:32:30,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 465 transitions, 7471 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:30,257 INFO L231 Difference]: Finished difference. Result has 215 places, 409 transitions, 6307 flow [2024-06-28 01:32:30,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5857, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6307, PETRI_PLACES=215, PETRI_TRANSITIONS=409} [2024-06-28 01:32:30,257 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 162 predicate places. [2024-06-28 01:32:30,257 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 409 transitions, 6307 flow [2024-06-28 01:32:30,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:30,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:30,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:30,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:32:30,258 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:30,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:30,258 INFO L85 PathProgramCache]: Analyzing trace with hash 969544584, now seen corresponding path program 1 times [2024-06-28 01:32:30,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:30,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226308571] [2024-06-28 01:32:30,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:30,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:30,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:30,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:30,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226308571] [2024-06-28 01:32:30,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226308571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:30,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:30,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:30,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649842990] [2024-06-28 01:32:30,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:30,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:30,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:30,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:30,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:30,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:32:30,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 409 transitions, 6307 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:30,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:30,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:32:30,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:32,691 INFO L124 PetriNetUnfolderBase]: 7019/10720 cut-off events. [2024-06-28 01:32:32,692 INFO L125 PetriNetUnfolderBase]: For 369965/369965 co-relation queries the response was YES. [2024-06-28 01:32:32,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81984 conditions, 10720 events. 7019/10720 cut-off events. For 369965/369965 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 64121 event pairs, 1850 based on Foata normal form. 1/10451 useless extension candidates. Maximal degree in co-relation 81885. Up to 9832 conditions per place. [2024-06-28 01:32:32,823 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 400 selfloop transitions, 44 changer transitions 0/451 dead transitions. [2024-06-28 01:32:32,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 451 transitions, 7698 flow [2024-06-28 01:32:32,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:32,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:32,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-28 01:32:32,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48226950354609927 [2024-06-28 01:32:32,825 INFO L175 Difference]: Start difference. First operand has 215 places, 409 transitions, 6307 flow. Second operand 6 states and 136 transitions. [2024-06-28 01:32:32,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 451 transitions, 7698 flow [2024-06-28 01:32:33,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 451 transitions, 7448 flow, removed 99 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:33,742 INFO L231 Difference]: Finished difference. Result has 216 places, 423 transitions, 6498 flow [2024-06-28 01:32:33,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6062, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6498, PETRI_PLACES=216, PETRI_TRANSITIONS=423} [2024-06-28 01:32:33,743 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 163 predicate places. [2024-06-28 01:32:33,743 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 423 transitions, 6498 flow [2024-06-28 01:32:33,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:33,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:33,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:33,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:32:33,744 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:33,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:33,744 INFO L85 PathProgramCache]: Analyzing trace with hash 97162527, now seen corresponding path program 2 times [2024-06-28 01:32:33,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:33,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624335771] [2024-06-28 01:32:33,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:33,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:34,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:34,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:34,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624335771] [2024-06-28 01:32:34,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624335771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:34,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:34,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:32:34,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647148651] [2024-06-28 01:32:34,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:34,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:32:34,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:34,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:32:34,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:32:34,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:32:34,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 423 transitions, 6498 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:34,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:34,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:32:34,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:37,038 INFO L124 PetriNetUnfolderBase]: 7363/11133 cut-off events. [2024-06-28 01:32:37,038 INFO L125 PetriNetUnfolderBase]: For 428261/428270 co-relation queries the response was YES. [2024-06-28 01:32:37,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86521 conditions, 11133 events. 7363/11133 cut-off events. For 428261/428270 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 66414 event pairs, 1557 based on Foata normal form. 42/10936 useless extension candidates. Maximal degree in co-relation 86420. Up to 8805 conditions per place. [2024-06-28 01:32:37,186 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 298 selfloop transitions, 184 changer transitions 0/489 dead transitions. [2024-06-28 01:32:37,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 489 transitions, 8109 flow [2024-06-28 01:32:37,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:32:37,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:32:37,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 234 transitions. [2024-06-28 01:32:37,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4978723404255319 [2024-06-28 01:32:37,188 INFO L175 Difference]: Start difference. First operand has 216 places, 423 transitions, 6498 flow. Second operand 10 states and 234 transitions. [2024-06-28 01:32:37,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 489 transitions, 8109 flow [2024-06-28 01:32:38,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 489 transitions, 7994 flow, removed 48 selfloop flow, removed 2 redundant places. [2024-06-28 01:32:38,013 INFO L231 Difference]: Finished difference. Result has 225 places, 429 transitions, 6937 flow [2024-06-28 01:32:38,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6384, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6937, PETRI_PLACES=225, PETRI_TRANSITIONS=429} [2024-06-28 01:32:38,014 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 172 predicate places. [2024-06-28 01:32:38,014 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 429 transitions, 6937 flow [2024-06-28 01:32:38,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:38,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:38,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:38,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:32:38,015 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:38,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:38,015 INFO L85 PathProgramCache]: Analyzing trace with hash -863302623, now seen corresponding path program 3 times [2024-06-28 01:32:38,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:38,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296730563] [2024-06-28 01:32:38,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:38,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:38,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:38,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:38,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296730563] [2024-06-28 01:32:38,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296730563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:38,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:38,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:32:38,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35226890] [2024-06-28 01:32:38,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:38,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:32:38,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:38,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:32:38,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:32:38,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:32:38,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 429 transitions, 6937 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:38,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:38,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:32:38,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:41,189 INFO L124 PetriNetUnfolderBase]: 7425/11222 cut-off events. [2024-06-28 01:32:41,189 INFO L125 PetriNetUnfolderBase]: For 444615/444627 co-relation queries the response was YES. [2024-06-28 01:32:41,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90155 conditions, 11222 events. 7425/11222 cut-off events. For 444615/444627 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 66999 event pairs, 1589 based on Foata normal form. 12/10996 useless extension candidates. Maximal degree in co-relation 90051. Up to 8891 conditions per place. [2024-06-28 01:32:41,403 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 265 selfloop transitions, 213 changer transitions 0/485 dead transitions. [2024-06-28 01:32:41,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 485 transitions, 8423 flow [2024-06-28 01:32:41,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:41,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:41,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-28 01:32:41,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508274231678487 [2024-06-28 01:32:41,405 INFO L175 Difference]: Start difference. First operand has 225 places, 429 transitions, 6937 flow. Second operand 9 states and 215 transitions. [2024-06-28 01:32:41,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 485 transitions, 8423 flow [2024-06-28 01:32:42,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 485 transitions, 7914 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-28 01:32:42,349 INFO L231 Difference]: Finished difference. Result has 227 places, 433 transitions, 7019 flow [2024-06-28 01:32:42,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6428, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7019, PETRI_PLACES=227, PETRI_TRANSITIONS=433} [2024-06-28 01:32:42,350 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 174 predicate places. [2024-06-28 01:32:42,350 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 433 transitions, 7019 flow [2024-06-28 01:32:42,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:42,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:42,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:42,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:32:42,350 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:42,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:42,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1478509343, now seen corresponding path program 4 times [2024-06-28 01:32:42,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:42,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245308197] [2024-06-28 01:32:42,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:42,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:43,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:43,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:43,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245308197] [2024-06-28 01:32:43,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245308197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:43,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:43,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:32:43,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128732179] [2024-06-28 01:32:43,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:43,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:32:43,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:43,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:32:43,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:32:43,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:32:43,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 433 transitions, 7019 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:43,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:43,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:32:43,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:45,700 INFO L124 PetriNetUnfolderBase]: 7845/11848 cut-off events. [2024-06-28 01:32:45,700 INFO L125 PetriNetUnfolderBase]: For 494657/494669 co-relation queries the response was YES. [2024-06-28 01:32:45,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96509 conditions, 11848 events. 7845/11848 cut-off events. For 494657/494669 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 71197 event pairs, 1422 based on Foata normal form. 12/11620 useless extension candidates. Maximal degree in co-relation 96403. Up to 8469 conditions per place. [2024-06-28 01:32:45,877 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 265 selfloop transitions, 231 changer transitions 0/503 dead transitions. [2024-06-28 01:32:45,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 503 transitions, 8910 flow [2024-06-28 01:32:45,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:45,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:45,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-28 01:32:45,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-06-28 01:32:45,881 INFO L175 Difference]: Start difference. First operand has 227 places, 433 transitions, 7019 flow. Second operand 9 states and 222 transitions. [2024-06-28 01:32:45,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 503 transitions, 8910 flow [2024-06-28 01:32:46,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 503 transitions, 8349 flow, removed 70 selfloop flow, removed 7 redundant places. [2024-06-28 01:32:46,933 INFO L231 Difference]: Finished difference. Result has 230 places, 444 transitions, 7300 flow [2024-06-28 01:32:46,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6458, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7300, PETRI_PLACES=230, PETRI_TRANSITIONS=444} [2024-06-28 01:32:46,935 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 177 predicate places. [2024-06-28 01:32:46,935 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 444 transitions, 7300 flow [2024-06-28 01:32:46,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:46,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:46,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:46,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:32:46,936 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:46,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:46,936 INFO L85 PathProgramCache]: Analyzing trace with hash -159337983, now seen corresponding path program 5 times [2024-06-28 01:32:46,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:46,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763643148] [2024-06-28 01:32:46,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:46,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:47,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:47,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:47,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763643148] [2024-06-28 01:32:47,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763643148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:47,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:47,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:32:47,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36624941] [2024-06-28 01:32:47,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:47,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:32:47,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:47,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:32:47,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:32:47,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:32:47,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 444 transitions, 7300 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:47,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:47,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:32:47,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:50,444 INFO L124 PetriNetUnfolderBase]: 8127/12193 cut-off events. [2024-06-28 01:32:50,444 INFO L125 PetriNetUnfolderBase]: For 556986/556995 co-relation queries the response was YES. [2024-06-28 01:32:50,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101789 conditions, 12193 events. 8127/12193 cut-off events. For 556986/556995 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 73126 event pairs, 1681 based on Foata normal form. 42/12020 useless extension candidates. Maximal degree in co-relation 101681. Up to 9909 conditions per place. [2024-06-28 01:32:50,643 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 340 selfloop transitions, 162 changer transitions 0/509 dead transitions. [2024-06-28 01:32:50,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 509 transitions, 9046 flow [2024-06-28 01:32:50,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:32:50,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:32:50,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 235 transitions. [2024-06-28 01:32:50,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:32:50,645 INFO L175 Difference]: Start difference. First operand has 230 places, 444 transitions, 7300 flow. Second operand 10 states and 235 transitions. [2024-06-28 01:32:50,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 509 transitions, 9046 flow [2024-06-28 01:32:51,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 509 transitions, 8563 flow, removed 104 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:51,831 INFO L231 Difference]: Finished difference. Result has 235 places, 448 transitions, 7327 flow [2024-06-28 01:32:51,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6847, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7327, PETRI_PLACES=235, PETRI_TRANSITIONS=448} [2024-06-28 01:32:51,832 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 182 predicate places. [2024-06-28 01:32:51,832 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 448 transitions, 7327 flow [2024-06-28 01:32:51,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:51,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:51,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:51,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:32:51,833 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:51,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:51,833 INFO L85 PathProgramCache]: Analyzing trace with hash -159553464, now seen corresponding path program 4 times [2024-06-28 01:32:51,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:51,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066832805] [2024-06-28 01:32:51,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:51,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:52,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:52,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:52,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066832805] [2024-06-28 01:32:52,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066832805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:52,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:52,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:32:52,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778217951] [2024-06-28 01:32:52,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:52,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:32:52,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:52,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:32:52,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:32:52,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:52,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 448 transitions, 7327 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:52,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:52,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:52,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:55,639 INFO L124 PetriNetUnfolderBase]: 7661/11755 cut-off events. [2024-06-28 01:32:55,640 INFO L125 PetriNetUnfolderBase]: For 513387/513487 co-relation queries the response was YES. [2024-06-28 01:32:55,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97139 conditions, 11755 events. 7661/11755 cut-off events. For 513387/513487 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 73211 event pairs, 1621 based on Foata normal form. 26/11527 useless extension candidates. Maximal degree in co-relation 97029. Up to 10125 conditions per place. [2024-06-28 01:32:55,794 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 351 selfloop transitions, 64 changer transitions 0/492 dead transitions. [2024-06-28 01:32:55,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 492 transitions, 8444 flow [2024-06-28 01:32:55,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:55,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:55,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 01:32:55,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973404255319149 [2024-06-28 01:32:55,796 INFO L175 Difference]: Start difference. First operand has 235 places, 448 transitions, 7327 flow. Second operand 8 states and 187 transitions. [2024-06-28 01:32:55,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 492 transitions, 8444 flow [2024-06-28 01:32:56,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 492 transitions, 8048 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-28 01:32:56,874 INFO L231 Difference]: Finished difference. Result has 235 places, 451 transitions, 7199 flow [2024-06-28 01:32:56,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6931, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7199, PETRI_PLACES=235, PETRI_TRANSITIONS=451} [2024-06-28 01:32:56,875 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 182 predicate places. [2024-06-28 01:32:56,875 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 451 transitions, 7199 flow [2024-06-28 01:32:56,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:56,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:56,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:56,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:32:56,875 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:56,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:56,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1868504904, now seen corresponding path program 2 times [2024-06-28 01:32:56,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:56,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319956148] [2024-06-28 01:32:56,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:56,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:57,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:57,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:57,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319956148] [2024-06-28 01:32:57,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319956148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:57,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:57,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:57,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807217775] [2024-06-28 01:32:57,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:57,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:57,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:57,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:57,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:57,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:32:57,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 451 transitions, 7199 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:57,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:57,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:32:57,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:00,621 INFO L124 PetriNetUnfolderBase]: 8121/12351 cut-off events. [2024-06-28 01:33:00,621 INFO L125 PetriNetUnfolderBase]: For 520714/520756 co-relation queries the response was YES. [2024-06-28 01:33:00,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99324 conditions, 12351 events. 8121/12351 cut-off events. For 520714/520756 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 75288 event pairs, 2107 based on Foata normal form. 29/12110 useless extension candidates. Maximal degree in co-relation 99213. Up to 11468 conditions per place. [2024-06-28 01:33:00,771 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 421 selfloop transitions, 44 changer transitions 0/472 dead transitions. [2024-06-28 01:33:00,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 472 transitions, 8224 flow [2024-06-28 01:33:00,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:33:00,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:33:00,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-06-28 01:33:00,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4574468085106383 [2024-06-28 01:33:00,793 INFO L175 Difference]: Start difference. First operand has 235 places, 451 transitions, 7199 flow. Second operand 6 states and 129 transitions. [2024-06-28 01:33:00,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 472 transitions, 8224 flow [2024-06-28 01:33:01,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 472 transitions, 7894 flow, removed 103 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:01,788 INFO L231 Difference]: Finished difference. Result has 235 places, 451 transitions, 6983 flow [2024-06-28 01:33:01,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6881, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6983, PETRI_PLACES=235, PETRI_TRANSITIONS=451} [2024-06-28 01:33:01,790 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 182 predicate places. [2024-06-28 01:33:01,791 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 451 transitions, 6983 flow [2024-06-28 01:33:01,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:01,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:01,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:01,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:33:01,792 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:01,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:01,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1868274667, now seen corresponding path program 1 times [2024-06-28 01:33:01,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:01,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669897168] [2024-06-28 01:33:01,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:01,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:02,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:02,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:02,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669897168] [2024-06-28 01:33:02,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669897168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:02,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:02,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:33:02,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379805023] [2024-06-28 01:33:02,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:02,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:33:02,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:02,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:33:02,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:33:02,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:33:02,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 451 transitions, 6983 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:02,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:02,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:33:02,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:04,780 INFO L124 PetriNetUnfolderBase]: 7409/11325 cut-off events. [2024-06-28 01:33:04,780 INFO L125 PetriNetUnfolderBase]: For 457300/457300 co-relation queries the response was YES. [2024-06-28 01:33:04,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91034 conditions, 11325 events. 7409/11325 cut-off events. For 457300/457300 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 69506 event pairs, 1702 based on Foata normal form. 2/11142 useless extension candidates. Maximal degree in co-relation 90922. Up to 10442 conditions per place. [2024-06-28 01:33:04,925 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 443 selfloop transitions, 33 changer transitions 0/484 dead transitions. [2024-06-28 01:33:04,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 484 transitions, 8265 flow [2024-06-28 01:33:04,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:33:04,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:33:04,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-28 01:33:04,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-28 01:33:04,926 INFO L175 Difference]: Start difference. First operand has 235 places, 451 transitions, 6983 flow. Second operand 6 states and 138 transitions. [2024-06-28 01:33:04,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 484 transitions, 8265 flow [2024-06-28 01:33:05,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 484 transitions, 8145 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:05,906 INFO L231 Difference]: Finished difference. Result has 236 places, 457 transitions, 7035 flow [2024-06-28 01:33:05,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6863, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7035, PETRI_PLACES=236, PETRI_TRANSITIONS=457} [2024-06-28 01:33:05,908 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 183 predicate places. [2024-06-28 01:33:05,908 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 457 transitions, 7035 flow [2024-06-28 01:33:05,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:05,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:05,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:05,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:33:05,909 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:05,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:05,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1917034323, now seen corresponding path program 2 times [2024-06-28 01:33:05,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:05,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909117095] [2024-06-28 01:33:05,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:05,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:06,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:06,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:06,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909117095] [2024-06-28 01:33:06,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909117095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:06,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:06,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:33:06,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32266] [2024-06-28 01:33:06,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:06,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:33:06,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:06,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:33:06,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:33:06,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:33:06,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 457 transitions, 7035 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:06,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:06,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:33:06,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:09,115 INFO L124 PetriNetUnfolderBase]: 7359/11243 cut-off events. [2024-06-28 01:33:09,116 INFO L125 PetriNetUnfolderBase]: For 465252/465252 co-relation queries the response was YES. [2024-06-28 01:33:09,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90707 conditions, 11243 events. 7359/11243 cut-off events. For 465252/465252 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 68597 event pairs, 1836 based on Foata normal form. 1/11061 useless extension candidates. Maximal degree in co-relation 90594. Up to 10445 conditions per place. [2024-06-28 01:33:09,270 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 451 selfloop transitions, 16 changer transitions 0/475 dead transitions. [2024-06-28 01:33:09,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 475 transitions, 8047 flow [2024-06-28 01:33:09,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:33:09,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:33:09,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-06-28 01:33:09,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45390070921985815 [2024-06-28 01:33:09,272 INFO L175 Difference]: Start difference. First operand has 236 places, 457 transitions, 7035 flow. Second operand 6 states and 128 transitions. [2024-06-28 01:33:09,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 475 transitions, 8047 flow [2024-06-28 01:33:10,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 475 transitions, 7981 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:10,207 INFO L231 Difference]: Finished difference. Result has 239 places, 457 transitions, 7014 flow [2024-06-28 01:33:10,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6973, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7014, PETRI_PLACES=239, PETRI_TRANSITIONS=457} [2024-06-28 01:33:10,208 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 186 predicate places. [2024-06-28 01:33:10,208 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 457 transitions, 7014 flow [2024-06-28 01:33:10,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:10,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:10,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:10,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:33:10,212 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:10,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:10,212 INFO L85 PathProgramCache]: Analyzing trace with hash -171928687, now seen corresponding path program 1 times [2024-06-28 01:33:10,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:10,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062544957] [2024-06-28 01:33:10,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:10,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:11,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:11,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:11,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062544957] [2024-06-28 01:33:11,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062544957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:11,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:11,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:11,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691343862] [2024-06-28 01:33:11,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:11,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:11,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:11,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:11,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:11,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:33:11,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 457 transitions, 7014 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:11,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:11,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:33:11,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:14,268 INFO L124 PetriNetUnfolderBase]: 8215/12323 cut-off events. [2024-06-28 01:33:14,268 INFO L125 PetriNetUnfolderBase]: For 550887/550887 co-relation queries the response was YES. [2024-06-28 01:33:14,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100703 conditions, 12323 events. 8215/12323 cut-off events. For 550887/550887 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 73602 event pairs, 1626 based on Foata normal form. 6/12111 useless extension candidates. Maximal degree in co-relation 100589. Up to 11290 conditions per place. [2024-06-28 01:33:14,433 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 447 selfloop transitions, 69 changer transitions 0/523 dead transitions. [2024-06-28 01:33:14,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 523 transitions, 8844 flow [2024-06-28 01:33:14,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:14,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:14,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-28 01:33:14,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988179669030733 [2024-06-28 01:33:14,435 INFO L175 Difference]: Start difference. First operand has 239 places, 457 transitions, 7014 flow. Second operand 9 states and 211 transitions. [2024-06-28 01:33:14,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 523 transitions, 8844 flow [2024-06-28 01:33:15,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 523 transitions, 8765 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:15,307 INFO L231 Difference]: Finished difference. Result has 245 places, 470 transitions, 7498 flow [2024-06-28 01:33:15,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6935, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7498, PETRI_PLACES=245, PETRI_TRANSITIONS=470} [2024-06-28 01:33:15,308 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 192 predicate places. [2024-06-28 01:33:15,308 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 470 transitions, 7498 flow [2024-06-28 01:33:15,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:15,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:15,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:15,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:33:15,309 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:15,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:15,309 INFO L85 PathProgramCache]: Analyzing trace with hash 81128965, now seen corresponding path program 2 times [2024-06-28 01:33:15,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:15,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330387280] [2024-06-28 01:33:15,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:15,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:16,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:16,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:16,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330387280] [2024-06-28 01:33:16,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330387280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:16,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:16,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:16,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683147573] [2024-06-28 01:33:16,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:16,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:16,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:16,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:16,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:16,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:33:16,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 470 transitions, 7498 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:16,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:16,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:33:16,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:19,278 INFO L124 PetriNetUnfolderBase]: 8277/12383 cut-off events. [2024-06-28 01:33:19,278 INFO L125 PetriNetUnfolderBase]: For 592704/592704 co-relation queries the response was YES. [2024-06-28 01:33:19,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104091 conditions, 12383 events. 8277/12383 cut-off events. For 592704/592704 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 73924 event pairs, 1952 based on Foata normal form. 6/12181 useless extension candidates. Maximal degree in co-relation 103974. Up to 11336 conditions per place. [2024-06-28 01:33:19,436 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 437 selfloop transitions, 85 changer transitions 0/529 dead transitions. [2024-06-28 01:33:19,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 529 transitions, 9071 flow [2024-06-28 01:33:19,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:19,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:19,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-28 01:33:19,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059101654846335 [2024-06-28 01:33:19,439 INFO L175 Difference]: Start difference. First operand has 245 places, 470 transitions, 7498 flow. Second operand 9 states and 214 transitions. [2024-06-28 01:33:19,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 529 transitions, 9071 flow [2024-06-28 01:33:20,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 529 transitions, 8794 flow, removed 131 selfloop flow, removed 2 redundant places. [2024-06-28 01:33:20,827 INFO L231 Difference]: Finished difference. Result has 252 places, 474 transitions, 7559 flow [2024-06-28 01:33:20,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7221, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7559, PETRI_PLACES=252, PETRI_TRANSITIONS=474} [2024-06-28 01:33:20,828 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 199 predicate places. [2024-06-28 01:33:20,828 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 474 transitions, 7559 flow [2024-06-28 01:33:20,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:20,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:20,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:20,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:33:20,829 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:20,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:20,829 INFO L85 PathProgramCache]: Analyzing trace with hash -170025907, now seen corresponding path program 3 times [2024-06-28 01:33:20,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:20,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048973322] [2024-06-28 01:33:20,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:20,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:21,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:21,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048973322] [2024-06-28 01:33:21,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048973322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:21,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:21,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:21,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362446561] [2024-06-28 01:33:21,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:21,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:21,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:21,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:21,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:22,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:33:22,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 474 transitions, 7559 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:22,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:22,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:33:22,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:24,929 INFO L124 PetriNetUnfolderBase]: 8404/12642 cut-off events. [2024-06-28 01:33:24,930 INFO L125 PetriNetUnfolderBase]: For 623833/623833 co-relation queries the response was YES. [2024-06-28 01:33:25,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106770 conditions, 12642 events. 8404/12642 cut-off events. For 623833/623833 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 76230 event pairs, 1997 based on Foata normal form. 6/12414 useless extension candidates. Maximal degree in co-relation 106651. Up to 11304 conditions per place. [2024-06-28 01:33:25,278 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 443 selfloop transitions, 95 changer transitions 0/545 dead transitions. [2024-06-28 01:33:25,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 545 transitions, 9628 flow [2024-06-28 01:33:25,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:25,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:25,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-28 01:33:25,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-06-28 01:33:25,279 INFO L175 Difference]: Start difference. First operand has 252 places, 474 transitions, 7559 flow. Second operand 9 states and 213 transitions. [2024-06-28 01:33:25,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 545 transitions, 9628 flow [2024-06-28 01:33:26,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 545 transitions, 9344 flow, removed 71 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:26,506 INFO L231 Difference]: Finished difference. Result has 257 places, 488 transitions, 7975 flow [2024-06-28 01:33:26,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7275, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7975, PETRI_PLACES=257, PETRI_TRANSITIONS=488} [2024-06-28 01:33:26,506 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 204 predicate places. [2024-06-28 01:33:26,507 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 488 transitions, 7975 flow [2024-06-28 01:33:26,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:26,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:26,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:26,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:33:26,507 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:26,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:26,508 INFO L85 PathProgramCache]: Analyzing trace with hash 168894429, now seen corresponding path program 1 times [2024-06-28 01:33:26,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:26,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642651103] [2024-06-28 01:33:26,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:26,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:27,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:27,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:27,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642651103] [2024-06-28 01:33:27,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642651103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:27,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:27,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:27,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299556298] [2024-06-28 01:33:27,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:27,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:27,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:27,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:27,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:27,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:33:27,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 488 transitions, 7975 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:27,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:27,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:33:27,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:30,780 INFO L124 PetriNetUnfolderBase]: 8824/13192 cut-off events. [2024-06-28 01:33:30,780 INFO L125 PetriNetUnfolderBase]: For 701430/701430 co-relation queries the response was YES. [2024-06-28 01:33:30,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113284 conditions, 13192 events. 8824/13192 cut-off events. For 701430/701430 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 79535 event pairs, 2020 based on Foata normal form. 30/13010 useless extension candidates. Maximal degree in co-relation 113162. Up to 11815 conditions per place. [2024-06-28 01:33:31,002 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 478 selfloop transitions, 81 changer transitions 0/566 dead transitions. [2024-06-28 01:33:31,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 566 transitions, 9863 flow [2024-06-28 01:33:31,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:31,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:31,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 241 transitions. [2024-06-28 01:33:31,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127659574468085 [2024-06-28 01:33:31,004 INFO L175 Difference]: Start difference. First operand has 257 places, 488 transitions, 7975 flow. Second operand 10 states and 241 transitions. [2024-06-28 01:33:31,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 566 transitions, 9863 flow [2024-06-28 01:33:32,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 566 transitions, 9632 flow, removed 97 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:32,675 INFO L231 Difference]: Finished difference. Result has 265 places, 500 transitions, 8184 flow [2024-06-28 01:33:32,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7744, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8184, PETRI_PLACES=265, PETRI_TRANSITIONS=500} [2024-06-28 01:33:32,676 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 212 predicate places. [2024-06-28 01:33:32,676 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 500 transitions, 8184 flow [2024-06-28 01:33:32,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:32,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:32,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:32,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:33:32,677 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:32,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:32,677 INFO L85 PathProgramCache]: Analyzing trace with hash -9215800, now seen corresponding path program 1 times [2024-06-28 01:33:32,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:32,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030196686] [2024-06-28 01:33:32,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:32,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:33,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:33,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:33,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030196686] [2024-06-28 01:33:33,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030196686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:33,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:33,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:33,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717185359] [2024-06-28 01:33:33,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:33,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:33,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:33,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:33,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:33,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:33:33,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 500 transitions, 8184 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:33,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:33,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:33:33,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:36,288 INFO L124 PetriNetUnfolderBase]: 8860/13252 cut-off events. [2024-06-28 01:33:36,288 INFO L125 PetriNetUnfolderBase]: For 686715/686715 co-relation queries the response was YES. [2024-06-28 01:33:36,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114236 conditions, 13252 events. 8860/13252 cut-off events. For 686715/686715 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 80007 event pairs, 2123 based on Foata normal form. 2/13038 useless extension candidates. Maximal degree in co-relation 114111. Up to 12449 conditions per place. [2024-06-28 01:33:36,459 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 474 selfloop transitions, 65 changer transitions 0/546 dead transitions. [2024-06-28 01:33:36,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 546 transitions, 9772 flow [2024-06-28 01:33:36,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:36,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:36,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 01:33:36,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48632218844984804 [2024-06-28 01:33:36,461 INFO L175 Difference]: Start difference. First operand has 265 places, 500 transitions, 8184 flow. Second operand 7 states and 160 transitions. [2024-06-28 01:33:36,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 546 transitions, 9772 flow [2024-06-28 01:33:38,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 546 transitions, 9534 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:38,014 INFO L231 Difference]: Finished difference. Result has 266 places, 511 transitions, 8395 flow [2024-06-28 01:33:38,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7971, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8395, PETRI_PLACES=266, PETRI_TRANSITIONS=511} [2024-06-28 01:33:38,015 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 213 predicate places. [2024-06-28 01:33:38,015 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 511 transitions, 8395 flow [2024-06-28 01:33:38,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:38,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:38,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:38,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:33:38,016 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:38,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:38,016 INFO L85 PathProgramCache]: Analyzing trace with hash -769242023, now seen corresponding path program 4 times [2024-06-28 01:33:38,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:38,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368658830] [2024-06-28 01:33:38,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:38,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat