./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe012_power.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/safe012_power.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/safe012_power.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe012_power.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 01:58:04,848 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:58:04,898 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:58:04,902 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:58:04,903 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:58:04,923 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:58:04,924 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:58:04,924 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:58:04,925 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:58:04,925 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:58:04,925 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:58:04,926 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:58:04,926 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:58:04,927 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:58:04,927 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:58:04,927 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:58:04,928 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:58:04,928 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:58:04,928 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:58:04,929 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:58:04,929 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:58:04,930 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:58:04,930 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:58:04,930 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:58:04,931 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:58:04,931 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:58:04,931 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:58:04,932 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:58:04,932 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:58:04,933 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:58:04,933 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:58:04,933 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:58:04,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:58:04,934 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:58:04,934 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:58:04,934 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:58:04,935 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:58:04,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:58:04,935 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:58:04,935 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:58:04,936 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:58:04,941 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:58:04,941 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:58:04,941 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:58:05,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:58:05,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:58:05,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:58:05,221 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:58:05,221 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:58:05,222 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe012_power.opt.yml/witness.yml [2024-06-28 01:58:05,471 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:58:05,471 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:58:05,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_power.opt.i [2024-06-28 01:58:06,694 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:58:06,963 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:58:06,966 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_power.opt.i [2024-06-28 01:58:06,982 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac141d0eb/bc8aafa055f54848a21e97190a99d423/FLAG7ff489fba [2024-06-28 01:58:06,994 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac141d0eb/bc8aafa055f54848a21e97190a99d423 [2024-06-28 01:58:06,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:58:06,996 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:58:06,997 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:58:06,997 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:58:07,002 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:58:07,003 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:58:05" (1/2) ... [2024-06-28 01:58:07,004 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@466e32 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:58:07, skipping insertion in model container [2024-06-28 01:58:07,004 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:58:05" (1/2) ... [2024-06-28 01:58:07,005 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7b3d86c1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:58:07, skipping insertion in model container [2024-06-28 01:58:07,006 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:58:06" (2/2) ... [2024-06-28 01:58:07,006 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@466e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:07, skipping insertion in model container [2024-06-28 01:58:07,006 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:58:06" (2/2) ... [2024-06-28 01:58:07,006 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:58:07,150 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:58:07,151 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] (((((((((((((((((((((((((((((((((! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p2_EAX$flush_delayed == (_Bool)0) && __unbuffered_p2_EAX$mem_tmp == 0) && __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p2_EAX$w_buff0 == 0) && __unbuffered_p2_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p2_EAX$w_buff1 == 0) && __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & y && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1)))) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & y && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0) [2024-06-28 01:58:07,152 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((((((((((((((! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p2_EAX$flush_delayed == (_Bool)0) && __unbuffered_p2_EAX$mem_tmp == 0) && __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p2_EAX$w_buff0 == 0) && __unbuffered_p2_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p2_EAX$w_buff1 == 0) && __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & y && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1)))) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & y && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0) [2024-06-28 01:58:07,152 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] (((((((((((((((((((((((((((((((((! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p2_EAX$flush_delayed == (_Bool)0) && __unbuffered_p2_EAX$mem_tmp == 0) && __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p2_EAX$w_buff0 == 0) && __unbuffered_p2_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p2_EAX$w_buff1 == 0) && __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & y && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1)))) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & y && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0) [2024-06-28 01:58:07,153 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:58:07,153 INFO L106 edCorrectnessWitness]: ghost_update [L851-L851] multithreaded = 1; [2024-06-28 01:58:07,200 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:58:07,398 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/safe012_power.opt.i[951,964] [2024-06-28 01:58:07,672 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:58:07,683 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:58:07,718 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/safe012_power.opt.i[951,964] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:58:07,868 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:58:07,917 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:58:07,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:07 WrapperNode [2024-06-28 01:58:07,917 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:58:07,919 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:58:07,919 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:58:07,919 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:58:07,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:07" (1/1) ... [2024-06-28 01:58:07,959 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:07" (1/1) ... [2024-06-28 01:58:08,066 INFO L138 Inliner]: procedures = 175, calls = 83, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 251 [2024-06-28 01:58:08,067 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:58:08,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:58:08,068 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:58:08,068 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:58:08,083 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:07" (1/1) ... [2024-06-28 01:58:08,083 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:07" (1/1) ... [2024-06-28 01:58:08,088 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:07" (1/1) ... [2024-06-28 01:58:08,123 INFO L175 MemorySlicer]: Split 42 memory accesses to 2 slices as follows [2, 40]. 95 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 5 writes are split as follows [0, 5]. [2024-06-28 01:58:08,128 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:07" (1/1) ... [2024-06-28 01:58:08,132 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:07" (1/1) ... [2024-06-28 01:58:08,150 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:07" (1/1) ... [2024-06-28 01:58:08,153 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:07" (1/1) ... [2024-06-28 01:58:08,156 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:07" (1/1) ... [2024-06-28 01:58:08,159 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:07" (1/1) ... [2024-06-28 01:58:08,165 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:58:08,166 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:58:08,166 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:58:08,166 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:58:08,167 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:07" (1/1) ... [2024-06-28 01:58:08,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:58:08,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:58:08,221 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 01:58:08,248 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 01:58:08,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 01:58:08,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 01:58:08,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 01:58:08,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 01:58:08,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:58:08,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:58:08,265 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:58:08,265 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:58:08,265 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:58:08,266 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:58:08,266 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:58:08,266 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:58:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:58:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 01:58:08,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:58:08,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:58:08,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:58:08,271 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 01:58:08,447 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:58:08,448 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:58:09,001 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:58:09,002 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:58:09,536 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:58:09,536 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:58:09,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:58:09 BoogieIcfgContainer [2024-06-28 01:58:09,537 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:58:09,541 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:58:09,541 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:58:09,544 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:58:09,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:58:05" (1/4) ... [2024-06-28 01:58:09,545 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3e918b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:58:09, skipping insertion in model container [2024-06-28 01:58:09,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:58:06" (2/4) ... [2024-06-28 01:58:09,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3e918b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:58:09, skipping insertion in model container [2024-06-28 01:58:09,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:07" (3/4) ... [2024-06-28 01:58:09,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3e918b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:58:09, skipping insertion in model container [2024-06-28 01:58:09,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:58:09" (4/4) ... [2024-06-28 01:58:09,549 INFO L112 eAbstractionObserver]: Analyzing ICFG safe012_power.opt.i [2024-06-28 01:58:09,568 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:58:09,568 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:58:09,569 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:58:09,650 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:58:09,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:58:09,734 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-28 01:58:09,734 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:58:09,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-28 01:58:09,739 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:58:09,744 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-28 01:58:09,758 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:58:09,769 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;@68b40e06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:58:09,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:58:09,774 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:58:09,775 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:58:09,775 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:58:09,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:09,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:58:09,777 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 01:58:09,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:09,782 INFO L85 PathProgramCache]: Analyzing trace with hash 792009605, now seen corresponding path program 1 times [2024-06-28 01:58:09,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:09,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33557799] [2024-06-28 01:58:09,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:09,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:12,025 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 01:58:12,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:12,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33557799] [2024-06-28 01:58:12,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33557799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:12,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:12,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:58:12,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389157401] [2024-06-28 01:58:12,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:12,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:58:12,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:12,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:58:12,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:58:12,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:58:12,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 01:58:12,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:12,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:58:12,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:13,219 INFO L124 PetriNetUnfolderBase]: 3009/4772 cut-off events. [2024-06-28 01:58:13,220 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-06-28 01:58:13,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9214 conditions, 4772 events. 3009/4772 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 29826 event pairs, 1797 based on Foata normal form. 126/4426 useless extension candidates. Maximal degree in co-relation 9202. Up to 4373 conditions per place. [2024-06-28 01:58:13,258 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 46 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2024-06-28 01:58:13,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 61 transitions, 239 flow [2024-06-28 01:58:13,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:58:13,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:58:13,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-06-28 01:58:13,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2024-06-28 01:58:13,274 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 94 transitions. [2024-06-28 01:58:13,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 61 transitions, 239 flow [2024-06-28 01:58:13,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 61 transitions, 234 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:58:13,285 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 131 flow [2024-06-28 01:58:13,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-28 01:58:13,291 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-28 01:58:13,292 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 131 flow [2024-06-28 01:58:13,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 01:58:13,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:13,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:13,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:58:13,293 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 01:58:13,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:13,295 INFO L85 PathProgramCache]: Analyzing trace with hash 2054475320, now seen corresponding path program 1 times [2024-06-28 01:58:13,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:13,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878083779] [2024-06-28 01:58:13,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:13,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:15,740 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 01:58:15,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:15,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878083779] [2024-06-28 01:58:15,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878083779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:15,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:15,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:58:15,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933650839] [2024-06-28 01:58:15,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:15,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:58:15,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:15,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:58:15,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:58:15,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:58:15,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 131 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 01:58:15,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:15,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:58:15,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:17,400 INFO L124 PetriNetUnfolderBase]: 5304/8231 cut-off events. [2024-06-28 01:58:17,401 INFO L125 PetriNetUnfolderBase]: For 1186/1186 co-relation queries the response was YES. [2024-06-28 01:58:17,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17535 conditions, 8231 events. 5304/8231 cut-off events. For 1186/1186 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 49823 event pairs, 2077 based on Foata normal form. 6/7698 useless extension candidates. Maximal degree in co-relation 17523. Up to 7468 conditions per place. [2024-06-28 01:58:17,452 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 59 selfloop transitions, 8 changer transitions 0/75 dead transitions. [2024-06-28 01:58:17,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 75 transitions, 329 flow [2024-06-28 01:58:17,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:58:17,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:58:17,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2024-06-28 01:58:17,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-06-28 01:58:17,458 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 131 flow. Second operand 4 states and 114 transitions. [2024-06-28 01:58:17,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 75 transitions, 329 flow [2024-06-28 01:58:17,460 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 01:58:17,462 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 164 flow [2024-06-28 01:58:17,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=122, 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=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2024-06-28 01:58:17,465 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-06-28 01:58:17,465 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 164 flow [2024-06-28 01:58:17,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 01:58:17,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:17,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:17,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:58:17,472 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:17,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:17,473 INFO L85 PathProgramCache]: Analyzing trace with hash 768857878, now seen corresponding path program 1 times [2024-06-28 01:58:17,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:17,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969629348] [2024-06-28 01:58:17,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:17,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:17,579 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 01:58:17,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:17,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969629348] [2024-06-28 01:58:17,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969629348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:17,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:17,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:58:17,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568189664] [2024-06-28 01:58:17,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:17,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:58:17,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:17,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:58:17,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:58:17,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-06-28 01:58:17,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:17,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:17,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-06-28 01:58:17,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:18,017 INFO L124 PetriNetUnfolderBase]: 1049/1925 cut-off events. [2024-06-28 01:58:18,017 INFO L125 PetriNetUnfolderBase]: For 741/809 co-relation queries the response was YES. [2024-06-28 01:58:18,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4241 conditions, 1925 events. 1049/1925 cut-off events. For 741/809 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12652 event pairs, 231 based on Foata normal form. 2/1868 useless extension candidates. Maximal degree in co-relation 4227. Up to 1180 conditions per place. [2024-06-28 01:58:18,032 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 47 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2024-06-28 01:58:18,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 314 flow [2024-06-28 01:58:18,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:58:18,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:58:18,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-06-28 01:58:18,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2024-06-28 01:58:18,037 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 164 flow. Second operand 3 states and 100 transitions. [2024-06-28 01:58:18,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 314 flow [2024-06-28 01:58:18,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 67 transitions, 296 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 01:58:18,041 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 148 flow [2024-06-28 01:58:18,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-06-28 01:58:18,043 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 1 predicate places. [2024-06-28 01:58:18,043 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 148 flow [2024-06-28 01:58:18,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:18,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:18,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:18,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:58:18,044 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:18,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:18,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1936550365, now seen corresponding path program 1 times [2024-06-28 01:58:18,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:18,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461168453] [2024-06-28 01:58:18,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:18,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:19,749 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 01:58:19,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:19,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461168453] [2024-06-28 01:58:19,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461168453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:19,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:19,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:58:19,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300423886] [2024-06-28 01:58:19,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:19,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:58:19,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:19,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:58:19,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:58:19,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:58:19,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 148 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 01:58:19,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:19,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:58:19,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:21,318 INFO L124 PetriNetUnfolderBase]: 3516/5534 cut-off events. [2024-06-28 01:58:21,318 INFO L125 PetriNetUnfolderBase]: For 2308/2308 co-relation queries the response was YES. [2024-06-28 01:58:21,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12857 conditions, 5534 events. 3516/5534 cut-off events. For 2308/2308 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 33234 event pairs, 1659 based on Foata normal form. 2/5390 useless extension candidates. Maximal degree in co-relation 12842. Up to 5050 conditions per place. [2024-06-28 01:58:21,356 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 60 selfloop transitions, 10 changer transitions 1/79 dead transitions. [2024-06-28 01:58:21,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 79 transitions, 372 flow [2024-06-28 01:58:21,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:58:21,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:58:21,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-28 01:58:21,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041666666666667 [2024-06-28 01:58:21,359 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 148 flow. Second operand 5 states and 121 transitions. [2024-06-28 01:58:21,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 79 transitions, 372 flow [2024-06-28 01:58:21,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 79 transitions, 366 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:58:21,367 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 220 flow [2024-06-28 01:58:21,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=220, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2024-06-28 01:58:21,368 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 5 predicate places. [2024-06-28 01:58:21,369 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 220 flow [2024-06-28 01:58:21,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 01:58:21,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:21,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:21,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:58:21,370 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:21,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:21,371 INFO L85 PathProgramCache]: Analyzing trace with hash 96482725, now seen corresponding path program 1 times [2024-06-28 01:58:21,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:21,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420872554] [2024-06-28 01:58:21,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:21,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:23,472 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 01:58:23,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:23,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420872554] [2024-06-28 01:58:23,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420872554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:23,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:23,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:58:23,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775522369] [2024-06-28 01:58:23,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:23,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:58:23,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:23,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:58:23,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:58:23,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:58:23,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 220 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:23,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:23,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:58:23,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:24,782 INFO L124 PetriNetUnfolderBase]: 3166/5038 cut-off events. [2024-06-28 01:58:24,783 INFO L125 PetriNetUnfolderBase]: For 3280/3280 co-relation queries the response was YES. [2024-06-28 01:58:24,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12640 conditions, 5038 events. 3166/5038 cut-off events. For 3280/3280 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 30101 event pairs, 1500 based on Foata normal form. 2/4894 useless extension candidates. Maximal degree in co-relation 12622. Up to 4540 conditions per place. [2024-06-28 01:58:24,813 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 75 selfloop transitions, 14 changer transitions 0/97 dead transitions. [2024-06-28 01:58:24,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 97 transitions, 529 flow [2024-06-28 01:58:24,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:58:24,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:58:24,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 01:58:24,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-28 01:58:24,815 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 220 flow. Second operand 6 states and 142 transitions. [2024-06-28 01:58:24,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 97 transitions, 529 flow [2024-06-28 01:58:24,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 97 transitions, 515 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-28 01:58:24,820 INFO L231 Difference]: Finished difference. Result has 65 places, 68 transitions, 342 flow [2024-06-28 01:58:24,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=65, PETRI_TRANSITIONS=68} [2024-06-28 01:58:24,821 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 11 predicate places. [2024-06-28 01:58:24,821 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 68 transitions, 342 flow [2024-06-28 01:58:24,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:24,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:24,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:24,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:58:24,822 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 01:58:24,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:24,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1304000894, now seen corresponding path program 1 times [2024-06-28 01:58:24,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:24,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037008535] [2024-06-28 01:58:24,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:24,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:27,461 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 01:58:27,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:27,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037008535] [2024-06-28 01:58:27,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037008535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:27,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:27,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:58:27,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479334922] [2024-06-28 01:58:27,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:27,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:58:27,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:27,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:58:27,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:58:27,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:58:27,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 68 transitions, 342 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:27,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:27,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:58:27,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:28,726 INFO L124 PetriNetUnfolderBase]: 3164/5035 cut-off events. [2024-06-28 01:58:28,726 INFO L125 PetriNetUnfolderBase]: For 5760/5760 co-relation queries the response was YES. [2024-06-28 01:58:28,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14081 conditions, 5035 events. 3164/5035 cut-off events. For 5760/5760 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 30196 event pairs, 1452 based on Foata normal form. 2/4891 useless extension candidates. Maximal degree in co-relation 14058. Up to 4518 conditions per place. [2024-06-28 01:58:28,755 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 84 selfloop transitions, 18 changer transitions 0/110 dead transitions. [2024-06-28 01:58:28,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 110 transitions, 668 flow [2024-06-28 01:58:28,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:58:28,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:58:28,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 01:58:28,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-06-28 01:58:28,760 INFO L175 Difference]: Start difference. First operand has 65 places, 68 transitions, 342 flow. Second operand 7 states and 166 transitions. [2024-06-28 01:58:28,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 110 transitions, 668 flow [2024-06-28 01:58:28,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 110 transitions, 641 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-28 01:58:28,769 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 396 flow [2024-06-28 01:58:28,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=396, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2024-06-28 01:58:28,772 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2024-06-28 01:58:28,773 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 396 flow [2024-06-28 01:58:28,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:28,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:28,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:28,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:58:28,774 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 01:58:28,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:28,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1946848629, now seen corresponding path program 1 times [2024-06-28 01:58:28,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:28,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773179102] [2024-06-28 01:58:28,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:28,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:30,963 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 01:58:30,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:30,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773179102] [2024-06-28 01:58:30,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773179102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:30,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:30,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:58:30,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245169138] [2024-06-28 01:58:30,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:30,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:58:30,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:30,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:58:30,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:58:31,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:58:31,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 396 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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 01:58:31,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:31,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:58:31,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:32,215 INFO L124 PetriNetUnfolderBase]: 4063/6406 cut-off events. [2024-06-28 01:58:32,215 INFO L125 PetriNetUnfolderBase]: For 10214/10214 co-relation queries the response was YES. [2024-06-28 01:58:32,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18872 conditions, 6406 events. 4063/6406 cut-off events. For 10214/10214 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 37899 event pairs, 1582 based on Foata normal form. 2/6224 useless extension candidates. Maximal degree in co-relation 18847. Up to 5711 conditions per place. [2024-06-28 01:58:32,259 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 71 selfloop transitions, 22 changer transitions 0/100 dead transitions. [2024-06-28 01:58:32,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 100 transitions, 676 flow [2024-06-28 01:58:32,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:58:32,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:58:32,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-28 01:58:32,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:58:32,261 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 396 flow. Second operand 5 states and 120 transitions. [2024-06-28 01:58:32,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 100 transitions, 676 flow [2024-06-28 01:58:32,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 100 transitions, 625 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 01:58:32,273 INFO L231 Difference]: Finished difference. Result has 70 places, 76 transitions, 447 flow [2024-06-28 01:58:32,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=447, PETRI_PLACES=70, PETRI_TRANSITIONS=76} [2024-06-28 01:58:32,274 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2024-06-28 01:58:32,274 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 76 transitions, 447 flow [2024-06-28 01:58:32,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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 01:58:32,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:32,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:32,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:58:32,275 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 01:58:32,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:32,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1438096709, now seen corresponding path program 2 times [2024-06-28 01:58:32,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:32,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206767395] [2024-06-28 01:58:32,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:32,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:34,074 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 01:58:34,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:34,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206767395] [2024-06-28 01:58:34,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206767395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:34,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:34,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:58:34,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691529393] [2024-06-28 01:58:34,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:34,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:58:34,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:34,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:58:34,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:58:34,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:58:34,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 76 transitions, 447 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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 01:58:34,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:34,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:58:34,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:35,548 INFO L124 PetriNetUnfolderBase]: 4058/6399 cut-off events. [2024-06-28 01:58:35,548 INFO L125 PetriNetUnfolderBase]: For 13773/13773 co-relation queries the response was YES. [2024-06-28 01:58:35,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19985 conditions, 6399 events. 4058/6399 cut-off events. For 13773/13773 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 37866 event pairs, 1582 based on Foata normal form. 2/6217 useless extension candidates. Maximal degree in co-relation 19959. Up to 5685 conditions per place. [2024-06-28 01:58:35,588 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 80 selfloop transitions, 26 changer transitions 0/113 dead transitions. [2024-06-28 01:58:35,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 113 transitions, 785 flow [2024-06-28 01:58:35,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:58:35,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:58:35,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 01:58:35,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-28 01:58:35,590 INFO L175 Difference]: Start difference. First operand has 70 places, 76 transitions, 447 flow. Second operand 6 states and 143 transitions. [2024-06-28 01:58:35,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 113 transitions, 785 flow [2024-06-28 01:58:35,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 113 transitions, 721 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 01:58:35,608 INFO L231 Difference]: Finished difference. Result has 73 places, 80 transitions, 493 flow [2024-06-28 01:58:35,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=493, PETRI_PLACES=73, PETRI_TRANSITIONS=80} [2024-06-28 01:58:35,609 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2024-06-28 01:58:35,609 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 80 transitions, 493 flow [2024-06-28 01:58:35,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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 01:58:35,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:35,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:35,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:58:35,610 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 01:58:35,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:35,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1774671906, now seen corresponding path program 1 times [2024-06-28 01:58:35,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:35,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542297331] [2024-06-28 01:58:35,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:35,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:38,531 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 01:58:38,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:38,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542297331] [2024-06-28 01:58:38,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542297331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:38,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:38,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:38,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023110255] [2024-06-28 01:58:38,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:38,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:38,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:38,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:38,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:38,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:58:38,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 80 transitions, 493 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:38,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:38,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:58:38,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:39,845 INFO L124 PetriNetUnfolderBase]: 3182/5068 cut-off events. [2024-06-28 01:58:39,845 INFO L125 PetriNetUnfolderBase]: For 12432/12432 co-relation queries the response was YES. [2024-06-28 01:58:39,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16582 conditions, 5068 events. 3182/5068 cut-off events. For 12432/12432 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 30542 event pairs, 1342 based on Foata normal form. 4/4926 useless extension candidates. Maximal degree in co-relation 16555. Up to 4504 conditions per place. [2024-06-28 01:58:39,877 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 102 selfloop transitions, 21 changer transitions 0/131 dead transitions. [2024-06-28 01:58:39,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 131 transitions, 895 flow [2024-06-28 01:58:39,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:39,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:39,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 01:58:39,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-06-28 01:58:39,879 INFO L175 Difference]: Start difference. First operand has 73 places, 80 transitions, 493 flow. Second operand 8 states and 190 transitions. [2024-06-28 01:58:39,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 131 transitions, 895 flow [2024-06-28 01:58:39,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 131 transitions, 823 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 01:58:39,889 INFO L231 Difference]: Finished difference. Result has 77 places, 83 transitions, 513 flow [2024-06-28 01:58:39,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=513, PETRI_PLACES=77, PETRI_TRANSITIONS=83} [2024-06-28 01:58:39,890 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 23 predicate places. [2024-06-28 01:58:39,890 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 83 transitions, 513 flow [2024-06-28 01:58:39,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:39,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:39,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:39,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:58:39,891 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 01:58:39,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:39,891 INFO L85 PathProgramCache]: Analyzing trace with hash -222763459, now seen corresponding path program 1 times [2024-06-28 01:58:39,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:39,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366792117] [2024-06-28 01:58:39,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:39,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:42,165 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 01:58:42,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:42,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366792117] [2024-06-28 01:58:42,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366792117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:42,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:42,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:42,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747270863] [2024-06-28 01:58:42,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:42,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:42,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:42,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:42,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:42,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:58:42,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 83 transitions, 513 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:42,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:42,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:58:42,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:43,372 INFO L124 PetriNetUnfolderBase]: 4078/6434 cut-off events. [2024-06-28 01:58:43,372 INFO L125 PetriNetUnfolderBase]: For 18708/18708 co-relation queries the response was YES. [2024-06-28 01:58:43,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21320 conditions, 6434 events. 4078/6434 cut-off events. For 18708/18708 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 38084 event pairs, 1507 based on Foata normal form. 2/6252 useless extension candidates. Maximal degree in co-relation 21292. Up to 5678 conditions per place. [2024-06-28 01:58:43,405 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 95 selfloop transitions, 25 changer transitions 0/127 dead transitions. [2024-06-28 01:58:43,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 127 transitions, 921 flow [2024-06-28 01:58:43,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:58:43,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:58:43,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 01:58:43,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-28 01:58:43,408 INFO L175 Difference]: Start difference. First operand has 77 places, 83 transitions, 513 flow. Second operand 6 states and 143 transitions. [2024-06-28 01:58:43,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 127 transitions, 921 flow [2024-06-28 01:58:43,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 127 transitions, 853 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 01:58:43,427 INFO L231 Difference]: Finished difference. Result has 79 places, 95 transitions, 643 flow [2024-06-28 01:58:43,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=643, PETRI_PLACES=79, PETRI_TRANSITIONS=95} [2024-06-28 01:58:43,428 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 25 predicate places. [2024-06-28 01:58:43,428 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 95 transitions, 643 flow [2024-06-28 01:58:43,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:43,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:43,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:43,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:58:43,429 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 01:58:43,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:43,430 INFO L85 PathProgramCache]: Analyzing trace with hash 384580075, now seen corresponding path program 2 times [2024-06-28 01:58:43,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:43,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926594237] [2024-06-28 01:58:43,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:43,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:45,591 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 01:58:45,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:45,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926594237] [2024-06-28 01:58:45,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926594237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:45,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:45,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:45,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294930305] [2024-06-28 01:58:45,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:45,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:45,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:45,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:45,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:45,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:58:45,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 95 transitions, 643 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:45,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:45,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:58:45,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:47,072 INFO L124 PetriNetUnfolderBase]: 4107/6475 cut-off events. [2024-06-28 01:58:47,072 INFO L125 PetriNetUnfolderBase]: For 24787/24787 co-relation queries the response was YES. [2024-06-28 01:58:47,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22983 conditions, 6475 events. 4107/6475 cut-off events. For 24787/24787 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 38351 event pairs, 1507 based on Foata normal form. 2/6293 useless extension candidates. Maximal degree in co-relation 22952. Up to 5662 conditions per place. [2024-06-28 01:58:47,105 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 107 selfloop transitions, 36 changer transitions 0/150 dead transitions. [2024-06-28 01:58:47,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 150 transitions, 1199 flow [2024-06-28 01:58:47,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:58:47,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:58:47,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 01:58:47,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:58:47,108 INFO L175 Difference]: Start difference. First operand has 79 places, 95 transitions, 643 flow. Second operand 7 states and 168 transitions. [2024-06-28 01:58:47,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 150 transitions, 1199 flow [2024-06-28 01:58:47,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 150 transitions, 1143 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-28 01:58:47,133 INFO L231 Difference]: Finished difference. Result has 85 places, 107 transitions, 823 flow [2024-06-28 01:58:47,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=823, PETRI_PLACES=85, PETRI_TRANSITIONS=107} [2024-06-28 01:58:47,134 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 31 predicate places. [2024-06-28 01:58:47,134 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 107 transitions, 823 flow [2024-06-28 01:58:47,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:47,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:47,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:47,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:58:47,135 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 01:58:47,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:47,135 INFO L85 PathProgramCache]: Analyzing trace with hash 384573565, now seen corresponding path program 3 times [2024-06-28 01:58:47,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:47,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735100207] [2024-06-28 01:58:47,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:47,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:49,098 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 01:58:49,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:49,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735100207] [2024-06-28 01:58:49,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735100207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:49,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:49,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:49,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933866665] [2024-06-28 01:58:49,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:49,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:49,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:49,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:49,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:49,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:58:49,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 107 transitions, 823 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:49,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:49,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:58:49,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:50,752 INFO L124 PetriNetUnfolderBase]: 4102/6467 cut-off events. [2024-06-28 01:58:50,752 INFO L125 PetriNetUnfolderBase]: For 31724/31724 co-relation queries the response was YES. [2024-06-28 01:58:50,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24357 conditions, 6467 events. 4102/6467 cut-off events. For 31724/31724 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 38301 event pairs, 1514 based on Foata normal form. 2/6285 useless extension candidates. Maximal degree in co-relation 24323. Up to 5740 conditions per place. [2024-06-28 01:58:50,785 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 114 selfloop transitions, 25 changer transitions 0/146 dead transitions. [2024-06-28 01:58:50,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 146 transitions, 1199 flow [2024-06-28 01:58:50,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:58:50,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:58:50,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 01:58:50,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-28 01:58:50,787 INFO L175 Difference]: Start difference. First operand has 85 places, 107 transitions, 823 flow. Second operand 7 states and 163 transitions. [2024-06-28 01:58:50,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 146 transitions, 1199 flow [2024-06-28 01:58:50,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 146 transitions, 1111 flow, removed 39 selfloop flow, removed 2 redundant places. [2024-06-28 01:58:50,834 INFO L231 Difference]: Finished difference. Result has 90 places, 107 transitions, 794 flow [2024-06-28 01:58:50,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=794, PETRI_PLACES=90, PETRI_TRANSITIONS=107} [2024-06-28 01:58:50,835 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 36 predicate places. [2024-06-28 01:58:50,835 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 107 transitions, 794 flow [2024-06-28 01:58:50,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:50,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:50,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:50,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:58:50,836 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:50,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:50,836 INFO L85 PathProgramCache]: Analyzing trace with hash 2119165529, now seen corresponding path program 1 times [2024-06-28 01:58:50,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:50,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431687606] [2024-06-28 01:58:50,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:50,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:53,624 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 01:58:53,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:53,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431687606] [2024-06-28 01:58:53,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431687606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:53,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:53,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:58:53,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894396371] [2024-06-28 01:58:53,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:53,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:58:53,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:53,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:58:53,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:58:53,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:58:53,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 107 transitions, 794 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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 01:58:53,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:53,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:58:53,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:54,697 INFO L124 PetriNetUnfolderBase]: 2982/4869 cut-off events. [2024-06-28 01:58:54,697 INFO L125 PetriNetUnfolderBase]: For 25715/25730 co-relation queries the response was YES. [2024-06-28 01:58:54,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18728 conditions, 4869 events. 2982/4869 cut-off events. For 25715/25730 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 28938 event pairs, 1319 based on Foata normal form. 15/4732 useless extension candidates. Maximal degree in co-relation 18692. Up to 4243 conditions per place. [2024-06-28 01:58:54,729 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 99 selfloop transitions, 18 changer transitions 0/133 dead transitions. [2024-06-28 01:58:54,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 133 transitions, 1158 flow [2024-06-28 01:58:54,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:58:54,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:58:54,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-28 01:58:54,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041666666666667 [2024-06-28 01:58:54,731 INFO L175 Difference]: Start difference. First operand has 90 places, 107 transitions, 794 flow. Second operand 5 states and 121 transitions. [2024-06-28 01:58:54,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 133 transitions, 1158 flow [2024-06-28 01:58:54,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 133 transitions, 1072 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 01:58:54,753 INFO L231 Difference]: Finished difference. Result has 90 places, 113 transitions, 834 flow [2024-06-28 01:58:54,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=834, PETRI_PLACES=90, PETRI_TRANSITIONS=113} [2024-06-28 01:58:54,754 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 36 predicate places. [2024-06-28 01:58:54,754 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 113 transitions, 834 flow [2024-06-28 01:58:54,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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 01:58:54,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:54,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:54,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:58:54,755 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 01:58:54,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:54,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1782701082, now seen corresponding path program 1 times [2024-06-28 01:58:54,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:54,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592402107] [2024-06-28 01:58:54,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:54,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:56,538 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 01:58:56,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:56,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592402107] [2024-06-28 01:58:56,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592402107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:56,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:56,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:56,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746030527] [2024-06-28 01:58:56,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:56,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:56,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:56,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:56,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:56,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:58:56,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 113 transitions, 834 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:56,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:56,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:58:56,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:58,205 INFO L124 PetriNetUnfolderBase]: 4185/6591 cut-off events. [2024-06-28 01:58:58,205 INFO L125 PetriNetUnfolderBase]: For 38740/38740 co-relation queries the response was YES. [2024-06-28 01:58:58,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26271 conditions, 6591 events. 4185/6591 cut-off events. For 38740/38740 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 38791 event pairs, 1064 based on Foata normal form. 4/6411 useless extension candidates. Maximal degree in co-relation 26233. Up to 5741 conditions per place. [2024-06-28 01:58:58,240 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 119 selfloop transitions, 37 changer transitions 0/163 dead transitions. [2024-06-28 01:58:58,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 163 transitions, 1402 flow [2024-06-28 01:58:58,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:58:58,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:58:58,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 01:58:58,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-28 01:58:58,242 INFO L175 Difference]: Start difference. First operand has 90 places, 113 transitions, 834 flow. Second operand 7 states and 169 transitions. [2024-06-28 01:58:58,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 163 transitions, 1402 flow [2024-06-28 01:58:58,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 163 transitions, 1384 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-28 01:58:58,276 INFO L231 Difference]: Finished difference. Result has 96 places, 119 transitions, 1000 flow [2024-06-28 01:58:58,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1000, PETRI_PLACES=96, PETRI_TRANSITIONS=119} [2024-06-28 01:58:58,277 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 42 predicate places. [2024-06-28 01:58:58,277 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 119 transitions, 1000 flow [2024-06-28 01:58:58,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:58,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:58,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:58,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:58:58,278 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 01:58:58,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:58,278 INFO L85 PathProgramCache]: Analyzing trace with hash 715675358, now seen corresponding path program 2 times [2024-06-28 01:58:58,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:58,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688530841] [2024-06-28 01:58:58,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:58,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:00,207 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 01:59:00,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:00,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688530841] [2024-06-28 01:59:00,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688530841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:00,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:00,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:00,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100516105] [2024-06-28 01:59:00,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:00,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:00,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:00,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:00,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:00,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:59:00,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 119 transitions, 1000 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:00,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:00,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:59:00,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:01,685 INFO L124 PetriNetUnfolderBase]: 4177/6579 cut-off events. [2024-06-28 01:59:01,685 INFO L125 PetriNetUnfolderBase]: For 44104/44104 co-relation queries the response was YES. [2024-06-28 01:59:01,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27174 conditions, 6579 events. 4177/6579 cut-off events. For 44104/44104 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 38790 event pairs, 1410 based on Foata normal form. 4/6399 useless extension candidates. Maximal degree in co-relation 27133. Up to 5837 conditions per place. [2024-06-28 01:59:01,720 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 113 selfloop transitions, 31 changer transitions 0/151 dead transitions. [2024-06-28 01:59:01,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 151 transitions, 1370 flow [2024-06-28 01:59:01,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:59:01,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:59:01,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 01:59:01,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-28 01:59:01,723 INFO L175 Difference]: Start difference. First operand has 96 places, 119 transitions, 1000 flow. Second operand 6 states and 143 transitions. [2024-06-28 01:59:01,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 151 transitions, 1370 flow [2024-06-28 01:59:01,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 151 transitions, 1257 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-28 01:59:01,764 INFO L231 Difference]: Finished difference. Result has 99 places, 119 transitions, 958 flow [2024-06-28 01:59:01,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=958, PETRI_PLACES=99, PETRI_TRANSITIONS=119} [2024-06-28 01:59:01,765 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 45 predicate places. [2024-06-28 01:59:01,765 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 119 transitions, 958 flow [2024-06-28 01:59:01,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:01,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:01,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:01,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:59:01,766 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 01:59:01,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:01,766 INFO L85 PathProgramCache]: Analyzing trace with hash 715681310, now seen corresponding path program 1 times [2024-06-28 01:59:01,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:01,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424850885] [2024-06-28 01:59:01,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:01,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:04,285 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 01:59:04,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:04,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424850885] [2024-06-28 01:59:04,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424850885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:04,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:04,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:04,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222479697] [2024-06-28 01:59:04,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:04,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:04,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:04,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:04,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:04,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:59:04,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 119 transitions, 958 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:04,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:04,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:59:04,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:05,937 INFO L124 PetriNetUnfolderBase]: 4206/6628 cut-off events. [2024-06-28 01:59:05,937 INFO L125 PetriNetUnfolderBase]: For 45934/45934 co-relation queries the response was YES. [2024-06-28 01:59:05,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27453 conditions, 6628 events. 4206/6628 cut-off events. For 45934/45934 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 39154 event pairs, 1345 based on Foata normal form. 2/6446 useless extension candidates. Maximal degree in co-relation 27410. Up to 5776 conditions per place. [2024-06-28 01:59:05,972 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 114 selfloop transitions, 50 changer transitions 0/171 dead transitions. [2024-06-28 01:59:05,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 171 transitions, 1552 flow [2024-06-28 01:59:05,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:59:05,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:59:05,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 01:59:05,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-06-28 01:59:05,974 INFO L175 Difference]: Start difference. First operand has 99 places, 119 transitions, 958 flow. Second operand 7 states and 170 transitions. [2024-06-28 01:59:05,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 171 transitions, 1552 flow [2024-06-28 01:59:06,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 171 transitions, 1481 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 01:59:06,012 INFO L231 Difference]: Finished difference. Result has 102 places, 129 transitions, 1184 flow [2024-06-28 01:59:06,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1184, PETRI_PLACES=102, PETRI_TRANSITIONS=129} [2024-06-28 01:59:06,013 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 48 predicate places. [2024-06-28 01:59:06,013 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 129 transitions, 1184 flow [2024-06-28 01:59:06,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:06,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:06,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:06,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:59:06,014 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 01:59:06,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:06,014 INFO L85 PathProgramCache]: Analyzing trace with hash -963125398, now seen corresponding path program 3 times [2024-06-28 01:59:06,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:06,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204330257] [2024-06-28 01:59:06,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:06,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:08,022 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 01:59:08,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:08,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204330257] [2024-06-28 01:59:08,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204330257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:08,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:08,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:08,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215471235] [2024-06-28 01:59:08,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:08,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:08,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:08,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:08,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:08,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:59:08,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 129 transitions, 1184 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:08,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:08,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:59:08,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:09,771 INFO L124 PetriNetUnfolderBase]: 4198/6616 cut-off events. [2024-06-28 01:59:09,771 INFO L125 PetriNetUnfolderBase]: For 54726/54726 co-relation queries the response was YES. [2024-06-28 01:59:09,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29212 conditions, 6616 events. 4198/6616 cut-off events. For 54726/54726 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 39048 event pairs, 1357 based on Foata normal form. 4/6436 useless extension candidates. Maximal degree in co-relation 29167. Up to 5846 conditions per place. [2024-06-28 01:59:09,815 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 127 selfloop transitions, 38 changer transitions 0/172 dead transitions. [2024-06-28 01:59:09,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 172 transitions, 1672 flow [2024-06-28 01:59:09,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:59:09,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:59:09,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 01:59:09,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-06-28 01:59:09,817 INFO L175 Difference]: Start difference. First operand has 102 places, 129 transitions, 1184 flow. Second operand 7 states and 166 transitions. [2024-06-28 01:59:09,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 172 transitions, 1672 flow [2024-06-28 01:59:09,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 172 transitions, 1524 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-28 01:59:09,894 INFO L231 Difference]: Finished difference. Result has 105 places, 132 transitions, 1185 flow [2024-06-28 01:59:09,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1185, PETRI_PLACES=105, PETRI_TRANSITIONS=132} [2024-06-28 01:59:09,895 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 51 predicate places. [2024-06-28 01:59:09,895 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 132 transitions, 1185 flow [2024-06-28 01:59:09,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:09,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:09,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:09,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:59:09,896 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:09,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:09,896 INFO L85 PathProgramCache]: Analyzing trace with hash -962910196, now seen corresponding path program 2 times [2024-06-28 01:59:09,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:09,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649487454] [2024-06-28 01:59:09,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:09,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:12,410 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 01:59:12,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:12,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649487454] [2024-06-28 01:59:12,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649487454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:12,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:12,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:12,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612512828] [2024-06-28 01:59:12,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:12,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:12,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:12,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:12,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:12,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:59:12,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 132 transitions, 1185 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:12,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:12,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:59:12,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:14,027 INFO L124 PetriNetUnfolderBase]: 4230/6512 cut-off events. [2024-06-28 01:59:14,027 INFO L125 PetriNetUnfolderBase]: For 60639/60639 co-relation queries the response was YES. [2024-06-28 01:59:14,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29715 conditions, 6512 events. 4230/6512 cut-off events. For 60639/60639 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 37709 event pairs, 1342 based on Foata normal form. 2/6380 useless extension candidates. Maximal degree in co-relation 29669. Up to 5724 conditions per place. [2024-06-28 01:59:14,071 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 147 selfloop transitions, 52 changer transitions 0/206 dead transitions. [2024-06-28 01:59:14,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 206 transitions, 1997 flow [2024-06-28 01:59:14,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:59:14,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:59:14,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-28 01:59:14,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:59:14,073 INFO L175 Difference]: Start difference. First operand has 105 places, 132 transitions, 1185 flow. Second operand 9 states and 216 transitions. [2024-06-28 01:59:14,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 206 transitions, 1997 flow [2024-06-28 01:59:14,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 206 transitions, 1874 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 01:59:14,138 INFO L231 Difference]: Finished difference. Result has 110 places, 144 transitions, 1385 flow [2024-06-28 01:59:14,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1062, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1385, PETRI_PLACES=110, PETRI_TRANSITIONS=144} [2024-06-28 01:59:14,138 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 56 predicate places. [2024-06-28 01:59:14,138 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 144 transitions, 1385 flow [2024-06-28 01:59:14,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:14,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:14,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:14,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:59:14,139 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 01:59:14,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:14,139 INFO L85 PathProgramCache]: Analyzing trace with hash -963119446, now seen corresponding path program 3 times [2024-06-28 01:59:14,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:14,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117923883] [2024-06-28 01:59:14,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:14,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:16,534 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 01:59:16,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:16,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117923883] [2024-06-28 01:59:16,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117923883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:16,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:16,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:16,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203509075] [2024-06-28 01:59:16,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:16,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:16,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:16,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:16,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:16,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:59:16,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 144 transitions, 1385 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:16,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:16,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:59:16,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:18,106 INFO L124 PetriNetUnfolderBase]: 4225/6503 cut-off events. [2024-06-28 01:59:18,107 INFO L125 PetriNetUnfolderBase]: For 67685/67685 co-relation queries the response was YES. [2024-06-28 01:59:18,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30769 conditions, 6503 events. 4225/6503 cut-off events. For 67685/67685 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 37549 event pairs, 1356 based on Foata normal form. 2/6371 useless extension candidates. Maximal degree in co-relation 30721. Up to 5898 conditions per place. [2024-06-28 01:59:18,150 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 156 selfloop transitions, 29 changer transitions 0/192 dead transitions. [2024-06-28 01:59:18,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 192 transitions, 1883 flow [2024-06-28 01:59:18,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:18,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:18,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 01:59:18,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-06-28 01:59:18,152 INFO L175 Difference]: Start difference. First operand has 110 places, 144 transitions, 1385 flow. Second operand 8 states and 186 transitions. [2024-06-28 01:59:18,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 192 transitions, 1883 flow [2024-06-28 01:59:18,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 192 transitions, 1718 flow, removed 61 selfloop flow, removed 5 redundant places. [2024-06-28 01:59:18,235 INFO L231 Difference]: Finished difference. Result has 113 places, 144 transitions, 1287 flow [2024-06-28 01:59:18,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1220, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1287, PETRI_PLACES=113, PETRI_TRANSITIONS=144} [2024-06-28 01:59:18,235 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 59 predicate places. [2024-06-28 01:59:18,235 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 144 transitions, 1287 flow [2024-06-28 01:59:18,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:18,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:18,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:18,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:59:18,236 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:18,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:18,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1269623471, now seen corresponding path program 1 times [2024-06-28 01:59:18,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:18,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910123733] [2024-06-28 01:59:18,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:18,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:20,178 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 01:59:20,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:20,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910123733] [2024-06-28 01:59:20,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910123733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:20,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:20,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:59:20,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145873931] [2024-06-28 01:59:20,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:20,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:59:20,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:20,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:59:20,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:59:20,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:59:20,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 144 transitions, 1287 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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 01:59:20,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:20,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:59:20,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:21,728 INFO L124 PetriNetUnfolderBase]: 3975/6397 cut-off events. [2024-06-28 01:59:21,729 INFO L125 PetriNetUnfolderBase]: For 65895/65904 co-relation queries the response was YES. [2024-06-28 01:59:21,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29413 conditions, 6397 events. 3975/6397 cut-off events. For 65895/65904 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 38692 event pairs, 1318 based on Foata normal form. 11/6228 useless extension candidates. Maximal degree in co-relation 29363. Up to 5623 conditions per place. [2024-06-28 01:59:21,774 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 155 selfloop transitions, 15 changer transitions 0/187 dead transitions. [2024-06-28 01:59:21,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 187 transitions, 1903 flow [2024-06-28 01:59:21,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:59:21,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:59:21,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-28 01:59:21,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826388888888889 [2024-06-28 01:59:21,776 INFO L175 Difference]: Start difference. First operand has 113 places, 144 transitions, 1287 flow. Second operand 6 states and 139 transitions. [2024-06-28 01:59:21,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 187 transitions, 1903 flow [2024-06-28 01:59:21,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 187 transitions, 1830 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 01:59:21,842 INFO L231 Difference]: Finished difference. Result has 115 places, 157 transitions, 1414 flow [2024-06-28 01:59:21,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1220, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1414, PETRI_PLACES=115, PETRI_TRANSITIONS=157} [2024-06-28 01:59:21,842 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 61 predicate places. [2024-06-28 01:59:21,842 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 157 transitions, 1414 flow [2024-06-28 01:59:21,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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 01:59:21,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:21,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:21,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:59:21,843 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 01:59:21,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:21,843 INFO L85 PathProgramCache]: Analyzing trace with hash 583992062, now seen corresponding path program 1 times [2024-06-28 01:59:21,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:21,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310912872] [2024-06-28 01:59:21,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:21,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:24,059 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 01:59:24,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:24,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310912872] [2024-06-28 01:59:24,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310912872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:24,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:24,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:24,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600493337] [2024-06-28 01:59:24,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:24,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:24,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:24,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:24,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:24,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:59:24,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 157 transitions, 1414 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:24,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:24,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:59:24,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:25,627 INFO L124 PetriNetUnfolderBase]: 4261/6587 cut-off events. [2024-06-28 01:59:25,628 INFO L125 PetriNetUnfolderBase]: For 72717/72717 co-relation queries the response was YES. [2024-06-28 01:59:25,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32094 conditions, 6587 events. 4261/6587 cut-off events. For 72717/72717 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 38142 event pairs, 897 based on Foata normal form. 4/6447 useless extension candidates. Maximal degree in co-relation 32041. Up to 5833 conditions per place. [2024-06-28 01:59:25,675 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 181 selfloop transitions, 30 changer transitions 0/218 dead transitions. [2024-06-28 01:59:25,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 218 transitions, 2086 flow [2024-06-28 01:59:25,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:25,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:25,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 01:59:25,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-06-28 01:59:25,677 INFO L175 Difference]: Start difference. First operand has 115 places, 157 transitions, 1414 flow. Second operand 8 states and 186 transitions. [2024-06-28 01:59:25,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 218 transitions, 2086 flow [2024-06-28 01:59:25,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 218 transitions, 2076 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-28 01:59:25,753 INFO L231 Difference]: Finished difference. Result has 124 places, 168 transitions, 1628 flow [2024-06-28 01:59:25,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1404, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1628, PETRI_PLACES=124, PETRI_TRANSITIONS=168} [2024-06-28 01:59:25,754 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 70 predicate places. [2024-06-28 01:59:25,754 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 168 transitions, 1628 flow [2024-06-28 01:59:25,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:25,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:25,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:25,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:59:25,755 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 01:59:25,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:25,755 INFO L85 PathProgramCache]: Analyzing trace with hash 705749700, now seen corresponding path program 2 times [2024-06-28 01:59:25,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:25,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885097903] [2024-06-28 01:59:25,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:25,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:27,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:27,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:27,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885097903] [2024-06-28 01:59:27,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885097903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:27,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:27,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:27,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394967188] [2024-06-28 01:59:27,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:27,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:27,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:27,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:27,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:27,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:59:27,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 168 transitions, 1628 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:27,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:27,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:59:27,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:29,399 INFO L124 PetriNetUnfolderBase]: 4303/6649 cut-off events. [2024-06-28 01:59:29,399 INFO L125 PetriNetUnfolderBase]: For 84365/84365 co-relation queries the response was YES. [2024-06-28 01:59:29,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33985 conditions, 6649 events. 4303/6649 cut-off events. For 84365/84365 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 38497 event pairs, 1243 based on Foata normal form. 4/6509 useless extension candidates. Maximal degree in co-relation 33927. Up to 5988 conditions per place. [2024-06-28 01:59:29,445 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 181 selfloop transitions, 25 changer transitions 0/213 dead transitions. [2024-06-28 01:59:29,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 213 transitions, 2240 flow [2024-06-28 01:59:29,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:59:29,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:59:29,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 01:59:29,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-28 01:59:29,447 INFO L175 Difference]: Start difference. First operand has 124 places, 168 transitions, 1628 flow. Second operand 7 states and 163 transitions. [2024-06-28 01:59:29,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 213 transitions, 2240 flow [2024-06-28 01:59:29,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 213 transitions, 2102 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-28 01:59:29,527 INFO L231 Difference]: Finished difference. Result has 128 places, 172 transitions, 1649 flow [2024-06-28 01:59:29,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1501, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1649, PETRI_PLACES=128, PETRI_TRANSITIONS=172} [2024-06-28 01:59:29,528 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 74 predicate places. [2024-06-28 01:59:29,528 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 172 transitions, 1649 flow [2024-06-28 01:59:29,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:29,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:29,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:29,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:59:29,529 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 01:59:29,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:29,529 INFO L85 PathProgramCache]: Analyzing trace with hash 711279144, now seen corresponding path program 3 times [2024-06-28 01:59:29,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:29,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409943587] [2024-06-28 01:59:29,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:29,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:31,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:31,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:31,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409943587] [2024-06-28 01:59:31,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409943587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:31,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:31,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:31,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689208186] [2024-06-28 01:59:31,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:31,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:31,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:31,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:31,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:31,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:59:31,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 172 transitions, 1649 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:31,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:31,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:59:31,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:33,732 INFO L124 PetriNetUnfolderBase]: 4469/6908 cut-off events. [2024-06-28 01:59:33,732 INFO L125 PetriNetUnfolderBase]: For 96433/96441 co-relation queries the response was YES. [2024-06-28 01:59:33,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36373 conditions, 6908 events. 4469/6908 cut-off events. For 96433/96441 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 40059 event pairs, 1230 based on Foata normal form. 12/6779 useless extension candidates. Maximal degree in co-relation 36313. Up to 6252 conditions per place. [2024-06-28 01:59:33,774 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 222 selfloop transitions, 39 changer transitions 0/268 dead transitions. [2024-06-28 01:59:33,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 268 transitions, 2753 flow [2024-06-28 01:59:33,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:59:33,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:59:33,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 236 transitions. [2024-06-28 01:59:33,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-06-28 01:59:33,776 INFO L175 Difference]: Start difference. First operand has 128 places, 172 transitions, 1649 flow. Second operand 10 states and 236 transitions. [2024-06-28 01:59:33,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 268 transitions, 2753 flow [2024-06-28 01:59:33,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 268 transitions, 2612 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-28 01:59:33,865 INFO L231 Difference]: Finished difference. Result has 139 places, 200 transitions, 2059 flow [2024-06-28 01:59:33,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2059, PETRI_PLACES=139, PETRI_TRANSITIONS=200} [2024-06-28 01:59:33,865 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 85 predicate places. [2024-06-28 01:59:33,865 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 200 transitions, 2059 flow [2024-06-28 01:59:33,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:33,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:33,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:33,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:59:33,866 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 01:59:33,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:33,866 INFO L85 PathProgramCache]: Analyzing trace with hash 672735452, now seen corresponding path program 4 times [2024-06-28 01:59:33,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:33,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647220733] [2024-06-28 01:59:33,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:33,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:36,219 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 01:59:36,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:36,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647220733] [2024-06-28 01:59:36,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647220733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:36,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:36,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:36,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854598532] [2024-06-28 01:59:36,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:36,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:36,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:36,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:36,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:36,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:59:36,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 200 transitions, 2059 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:36,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:36,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:59:36,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:37,995 INFO L124 PetriNetUnfolderBase]: 4511/6961 cut-off events. [2024-06-28 01:59:37,996 INFO L125 PetriNetUnfolderBase]: For 106889/106900 co-relation queries the response was YES. [2024-06-28 01:59:38,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37835 conditions, 6961 events. 4511/6961 cut-off events. For 106889/106900 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 40281 event pairs, 1249 based on Foata normal form. 6/6821 useless extension candidates. Maximal degree in co-relation 37769. Up to 6134 conditions per place. [2024-06-28 01:59:38,041 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 184 selfloop transitions, 53 changer transitions 0/244 dead transitions. [2024-06-28 01:59:38,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 244 transitions, 2761 flow [2024-06-28 01:59:38,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:59:38,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:59:38,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 01:59:38,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-06-28 01:59:38,042 INFO L175 Difference]: Start difference. First operand has 139 places, 200 transitions, 2059 flow. Second operand 7 states and 166 transitions. [2024-06-28 01:59:38,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 244 transitions, 2761 flow [2024-06-28 01:59:38,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 244 transitions, 2607 flow, removed 50 selfloop flow, removed 3 redundant places. [2024-06-28 01:59:38,148 INFO L231 Difference]: Finished difference. Result has 143 places, 203 transitions, 2115 flow [2024-06-28 01:59:38,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1905, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2115, PETRI_PLACES=143, PETRI_TRANSITIONS=203} [2024-06-28 01:59:38,148 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 89 predicate places. [2024-06-28 01:59:38,149 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 203 transitions, 2115 flow [2024-06-28 01:59:38,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:38,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:38,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:38,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:59:38,149 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 01:59:38,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:38,150 INFO L85 PathProgramCache]: Analyzing trace with hash 3012566, now seen corresponding path program 1 times [2024-06-28 01:59:38,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:38,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681446088] [2024-06-28 01:59:38,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:38,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:41,034 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 01:59:41,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:41,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681446088] [2024-06-28 01:59:41,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681446088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:41,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:41,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:59:41,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405650305] [2024-06-28 01:59:41,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:41,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:59:41,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:41,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:59:41,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:59:41,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:59:41,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 203 transitions, 2115 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:41,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:41,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:59:41,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:42,944 INFO L124 PetriNetUnfolderBase]: 4659/7237 cut-off events. [2024-06-28 01:59:42,944 INFO L125 PetriNetUnfolderBase]: For 125524/125535 co-relation queries the response was YES. [2024-06-28 01:59:42,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40216 conditions, 7237 events. 4659/7237 cut-off events. For 125524/125535 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 42558 event pairs, 1114 based on Foata normal form. 18/7099 useless extension candidates. Maximal degree in co-relation 40149. Up to 5957 conditions per place. [2024-06-28 01:59:43,001 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 189 selfloop transitions, 64 changer transitions 0/260 dead transitions. [2024-06-28 01:59:43,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 260 transitions, 2911 flow [2024-06-28 01:59:43,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:43,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:43,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 01:59:43,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-28 01:59:43,003 INFO L175 Difference]: Start difference. First operand has 143 places, 203 transitions, 2115 flow. Second operand 8 states and 196 transitions. [2024-06-28 01:59:43,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 260 transitions, 2911 flow [2024-06-28 01:59:43,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 260 transitions, 2725 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-28 01:59:43,122 INFO L231 Difference]: Finished difference. Result has 146 places, 205 transitions, 2153 flow [2024-06-28 01:59:43,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1933, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2153, PETRI_PLACES=146, PETRI_TRANSITIONS=205} [2024-06-28 01:59:43,123 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 92 predicate places. [2024-06-28 01:59:43,123 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 205 transitions, 2153 flow [2024-06-28 01:59:43,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:43,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:43,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:43,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:59:43,124 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 01:59:43,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:43,124 INFO L85 PathProgramCache]: Analyzing trace with hash -493954152, now seen corresponding path program 5 times [2024-06-28 01:59:43,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:43,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431374384] [2024-06-28 01:59:43,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:43,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:45,545 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 01:59:45,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:45,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431374384] [2024-06-28 01:59:45,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431374384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:45,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:45,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:45,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455981830] [2024-06-28 01:59:45,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:45,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:45,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:45,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:45,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:45,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:59:45,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 205 transitions, 2153 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:45,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:45,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:59:45,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:47,637 INFO L124 PetriNetUnfolderBase]: 4701/7300 cut-off events. [2024-06-28 01:59:47,637 INFO L125 PetriNetUnfolderBase]: For 122339/122350 co-relation queries the response was YES. [2024-06-28 01:59:47,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40383 conditions, 7300 events. 4701/7300 cut-off events. For 122339/122350 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 42759 event pairs, 1289 based on Foata normal form. 6/7150 useless extension candidates. Maximal degree in co-relation 40315. Up to 6408 conditions per place. [2024-06-28 01:59:47,688 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 190 selfloop transitions, 61 changer transitions 0/258 dead transitions. [2024-06-28 01:59:47,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 258 transitions, 2925 flow [2024-06-28 01:59:47,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:47,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:47,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 01:59:47,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-06-28 01:59:47,690 INFO L175 Difference]: Start difference. First operand has 146 places, 205 transitions, 2153 flow. Second operand 8 states and 189 transitions. [2024-06-28 01:59:47,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 258 transitions, 2925 flow [2024-06-28 01:59:47,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 258 transitions, 2780 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 01:59:47,822 INFO L231 Difference]: Finished difference. Result has 148 places, 208 transitions, 2234 flow [2024-06-28 01:59:47,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2008, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2234, PETRI_PLACES=148, PETRI_TRANSITIONS=208} [2024-06-28 01:59:47,823 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 94 predicate places. [2024-06-28 01:59:47,823 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 208 transitions, 2234 flow [2024-06-28 01:59:47,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:47,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:47,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:47,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:59:47,824 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 01:59:47,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:47,825 INFO L85 PathProgramCache]: Analyzing trace with hash -500210262, now seen corresponding path program 6 times [2024-06-28 01:59:47,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:47,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367659971] [2024-06-28 01:59:47,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:47,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:50,081 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 01:59:50,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:50,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367659971] [2024-06-28 01:59:50,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367659971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:50,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:50,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:50,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322748691] [2024-06-28 01:59:50,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:50,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:50,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:50,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:50,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:50,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:59:50,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 208 transitions, 2234 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:50,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:50,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:59:50,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:52,024 INFO L124 PetriNetUnfolderBase]: 4743/7361 cut-off events. [2024-06-28 01:59:52,024 INFO L125 PetriNetUnfolderBase]: For 130490/130501 co-relation queries the response was YES. [2024-06-28 01:59:52,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41274 conditions, 7361 events. 4743/7361 cut-off events. For 130490/130501 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 43220 event pairs, 1309 based on Foata normal form. 6/7211 useless extension candidates. Maximal degree in co-relation 41205. Up to 6571 conditions per place. [2024-06-28 01:59:52,088 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 206 selfloop transitions, 46 changer transitions 0/259 dead transitions. [2024-06-28 01:59:52,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 259 transitions, 2994 flow [2024-06-28 01:59:52,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:52,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:52,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 01:59:52,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-06-28 01:59:52,090 INFO L175 Difference]: Start difference. First operand has 148 places, 208 transitions, 2234 flow. Second operand 8 states and 186 transitions. [2024-06-28 01:59:52,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 259 transitions, 2994 flow [2024-06-28 01:59:52,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 259 transitions, 2792 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-28 01:59:52,260 INFO L231 Difference]: Finished difference. Result has 150 places, 211 transitions, 2234 flow [2024-06-28 01:59:52,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2032, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2234, PETRI_PLACES=150, PETRI_TRANSITIONS=211} [2024-06-28 01:59:52,261 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 96 predicate places. [2024-06-28 01:59:52,261 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 211 transitions, 2234 flow [2024-06-28 01:59:52,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:52,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:52,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:52,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:59:52,262 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 01:59:52,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:52,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1616671938, now seen corresponding path program 7 times [2024-06-28 01:59:52,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:52,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684230460] [2024-06-28 01:59:52,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:52,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:54,530 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 01:59:54,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:54,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684230460] [2024-06-28 01:59:54,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684230460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:54,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:54,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:54,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482785417] [2024-06-28 01:59:54,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:54,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:54,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:54,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:54,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:54,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:59:54,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 211 transitions, 2234 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:54,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:54,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:59:54,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:56,610 INFO L124 PetriNetUnfolderBase]: 4740/7356 cut-off events. [2024-06-28 01:59:56,610 INFO L125 PetriNetUnfolderBase]: For 137743/137754 co-relation queries the response was YES. [2024-06-28 01:59:56,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41452 conditions, 7356 events. 4740/7356 cut-off events. For 137743/137754 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 43129 event pairs, 1290 based on Foata normal form. 6/7206 useless extension candidates. Maximal degree in co-relation 41382. Up to 6542 conditions per place. [2024-06-28 01:59:56,662 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 213 selfloop transitions, 45 changer transitions 0/265 dead transitions. [2024-06-28 01:59:56,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 265 transitions, 3022 flow [2024-06-28 01:59:56,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:56,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:56,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 01:59:56,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817708333333333 [2024-06-28 01:59:56,664 INFO L175 Difference]: Start difference. First operand has 150 places, 211 transitions, 2234 flow. Second operand 8 states and 185 transitions. [2024-06-28 01:59:56,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 265 transitions, 3022 flow [2024-06-28 01:59:56,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 265 transitions, 2844 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-28 01:59:56,814 INFO L231 Difference]: Finished difference. Result has 153 places, 217 transitions, 2296 flow [2024-06-28 01:59:56,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2296, PETRI_PLACES=153, PETRI_TRANSITIONS=217} [2024-06-28 01:59:56,814 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 99 predicate places. [2024-06-28 01:59:56,814 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 217 transitions, 2296 flow [2024-06-28 01:59:56,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:56,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:56,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:56,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:59:56,815 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 01:59:56,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:56,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1609992244, now seen corresponding path program 2 times [2024-06-28 01:59:56,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:56,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883415258] [2024-06-28 01:59:56,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:56,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:59,561 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 01:59:59,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:59,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883415258] [2024-06-28 01:59:59,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883415258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:59,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:59,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:59:59,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094195455] [2024-06-28 01:59:59,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:59,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:59:59,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:59,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:59:59,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:59:59,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:59:59,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 217 transitions, 2296 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:59,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:59,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:59:59,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:01,698 INFO L124 PetriNetUnfolderBase]: 5078/7889 cut-off events. [2024-06-28 02:00:01,698 INFO L125 PetriNetUnfolderBase]: For 171713/171724 co-relation queries the response was YES. [2024-06-28 02:00:01,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46188 conditions, 7889 events. 5078/7889 cut-off events. For 171713/171724 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 46870 event pairs, 1188 based on Foata normal form. 14/7747 useless extension candidates. Maximal degree in co-relation 46116. Up to 6186 conditions per place. [2024-06-28 02:00:01,772 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 187 selfloop transitions, 108 changer transitions 0/302 dead transitions. [2024-06-28 02:00:01,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 302 transitions, 3745 flow [2024-06-28 02:00:01,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:00:01,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:00:01,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-28 02:00:01,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162037037037037 [2024-06-28 02:00:01,773 INFO L175 Difference]: Start difference. First operand has 153 places, 217 transitions, 2296 flow. Second operand 9 states and 223 transitions. [2024-06-28 02:00:01,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 302 transitions, 3745 flow [2024-06-28 02:00:02,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 302 transitions, 3553 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-06-28 02:00:02,014 INFO L231 Difference]: Finished difference. Result has 160 places, 232 transitions, 2897 flow [2024-06-28 02:00:02,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2104, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2897, PETRI_PLACES=160, PETRI_TRANSITIONS=232} [2024-06-28 02:00:02,015 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 106 predicate places. [2024-06-28 02:00:02,015 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 232 transitions, 2897 flow [2024-06-28 02:00:02,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:02,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:02,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:02,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:00:02,016 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:02,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:02,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1610000614, now seen corresponding path program 3 times [2024-06-28 02:00:02,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:02,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740429010] [2024-06-28 02:00:02,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:02,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:04,964 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 02:00:04,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:04,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740429010] [2024-06-28 02:00:04,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740429010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:04,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:04,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:00:04,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621664668] [2024-06-28 02:00:04,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:04,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:00:04,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:04,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:00:04,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:00:05,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:00:05,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 232 transitions, 2897 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:05,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:05,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:00:05,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:07,330 INFO L124 PetriNetUnfolderBase]: 5255/8156 cut-off events. [2024-06-28 02:00:07,330 INFO L125 PetriNetUnfolderBase]: For 207302/207313 co-relation queries the response was YES. [2024-06-28 02:00:07,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51050 conditions, 8156 events. 5255/8156 cut-off events. For 207302/207313 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 48778 event pairs, 1399 based on Foata normal form. 18/8018 useless extension candidates. Maximal degree in co-relation 50974. Up to 6943 conditions per place. [2024-06-28 02:00:07,418 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 189 selfloop transitions, 110 changer transitions 0/306 dead transitions. [2024-06-28 02:00:07,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 306 transitions, 4018 flow [2024-06-28 02:00:07,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:00:07,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:00:07,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-28 02:00:07,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046296296296297 [2024-06-28 02:00:07,419 INFO L175 Difference]: Start difference. First operand has 160 places, 232 transitions, 2897 flow. Second operand 9 states and 218 transitions. [2024-06-28 02:00:07,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 306 transitions, 4018 flow [2024-06-28 02:00:07,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 306 transitions, 3646 flow, removed 157 selfloop flow, removed 3 redundant places. [2024-06-28 02:00:07,960 INFO L231 Difference]: Finished difference. Result has 166 places, 242 transitions, 3011 flow [2024-06-28 02:00:07,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2613, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3011, PETRI_PLACES=166, PETRI_TRANSITIONS=242} [2024-06-28 02:00:07,961 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 112 predicate places. [2024-06-28 02:00:07,961 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 242 transitions, 3011 flow [2024-06-28 02:00:07,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:07,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:07,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:07,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:00:07,962 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 02:00:07,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:07,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1610231254, now seen corresponding path program 4 times [2024-06-28 02:00:07,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:07,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425696501] [2024-06-28 02:00:07,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:07,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:10,833 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 02:00:10,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:10,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425696501] [2024-06-28 02:00:10,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425696501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:10,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:10,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:00:10,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226560191] [2024-06-28 02:00:10,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:10,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:00:10,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:10,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:00:10,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:00:10,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:00:10,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 242 transitions, 3011 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:10,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:10,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:00:10,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:13,223 INFO L124 PetriNetUnfolderBase]: 5409/8393 cut-off events. [2024-06-28 02:00:13,223 INFO L125 PetriNetUnfolderBase]: For 212727/212738 co-relation queries the response was YES. [2024-06-28 02:00:13,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52875 conditions, 8393 events. 5409/8393 cut-off events. For 212727/212738 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 50465 event pairs, 1434 based on Foata normal form. 18/8255 useless extension candidates. Maximal degree in co-relation 52797. Up to 7299 conditions per place. [2024-06-28 02:00:13,318 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 217 selfloop transitions, 91 changer transitions 0/315 dead transitions. [2024-06-28 02:00:13,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 315 transitions, 4101 flow [2024-06-28 02:00:13,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:00:13,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:00:13,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-28 02:00:13,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:00:13,320 INFO L175 Difference]: Start difference. First operand has 166 places, 242 transitions, 3011 flow. Second operand 9 states and 216 transitions. [2024-06-28 02:00:13,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 315 transitions, 4101 flow [2024-06-28 02:00:13,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 315 transitions, 3817 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 02:00:13,645 INFO L231 Difference]: Finished difference. Result has 170 places, 252 transitions, 3148 flow [2024-06-28 02:00:13,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2743, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3148, PETRI_PLACES=170, PETRI_TRANSITIONS=252} [2024-06-28 02:00:13,645 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 116 predicate places. [2024-06-28 02:00:13,645 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 252 transitions, 3148 flow [2024-06-28 02:00:13,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:13,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:13,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:13,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:00:13,646 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 02:00:13,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:13,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1616487364, now seen corresponding path program 5 times [2024-06-28 02:00:13,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:13,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474625371] [2024-06-28 02:00:13,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:13,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:16,373 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 02:00:16,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:16,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474625371] [2024-06-28 02:00:16,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474625371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:16,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:16,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:00:16,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750588868] [2024-06-28 02:00:16,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:16,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:00:16,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:16,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:00:16,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:00:16,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:00:16,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 252 transitions, 3148 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:16,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:16,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:00:16,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:18,844 INFO L124 PetriNetUnfolderBase]: 5399/8374 cut-off events. [2024-06-28 02:00:18,844 INFO L125 PetriNetUnfolderBase]: For 209763/209774 co-relation queries the response was YES. [2024-06-28 02:00:18,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52177 conditions, 8374 events. 5399/8374 cut-off events. For 209763/209774 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 50253 event pairs, 1439 based on Foata normal form. 18/8236 useless extension candidates. Maximal degree in co-relation 52097. Up to 7387 conditions per place. [2024-06-28 02:00:18,926 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 240 selfloop transitions, 68 changer transitions 0/315 dead transitions. [2024-06-28 02:00:18,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 315 transitions, 4103 flow [2024-06-28 02:00:18,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:00:18,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:00:18,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-28 02:00:18,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49537037037037035 [2024-06-28 02:00:18,928 INFO L175 Difference]: Start difference. First operand has 170 places, 252 transitions, 3148 flow. Second operand 9 states and 214 transitions. [2024-06-28 02:00:18,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 315 transitions, 4103 flow [2024-06-28 02:00:19,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 315 transitions, 3779 flow, removed 81 selfloop flow, removed 5 redundant places. [2024-06-28 02:00:19,315 INFO L231 Difference]: Finished difference. Result has 174 places, 254 transitions, 3068 flow [2024-06-28 02:00:19,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2860, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3068, PETRI_PLACES=174, PETRI_TRANSITIONS=254} [2024-06-28 02:00:19,315 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 120 predicate places. [2024-06-28 02:00:19,315 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 254 transitions, 3068 flow [2024-06-28 02:00:19,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:19,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:19,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:19,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:00:19,316 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:19,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:19,316 INFO L85 PathProgramCache]: Analyzing trace with hash -969823688, now seen corresponding path program 1 times [2024-06-28 02:00:19,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:19,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792812617] [2024-06-28 02:00:19,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:19,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:21,477 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 02:00:21,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:21,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792812617] [2024-06-28 02:00:21,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792812617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:21,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:21,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:00:21,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705179935] [2024-06-28 02:00:21,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:21,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:00:21,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:21,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:00:21,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:00:21,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:00:21,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 254 transitions, 3068 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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 02:00:21,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:21,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:00:21,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:23,655 INFO L124 PetriNetUnfolderBase]: 5129/8186 cut-off events. [2024-06-28 02:00:23,655 INFO L125 PetriNetUnfolderBase]: For 187040/187056 co-relation queries the response was YES. [2024-06-28 02:00:23,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50193 conditions, 8186 events. 5129/8186 cut-off events. For 187040/187056 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 50141 event pairs, 1399 based on Foata normal form. 14/8018 useless extension candidates. Maximal degree in co-relation 50112. Up to 7367 conditions per place. [2024-06-28 02:00:23,743 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 261 selfloop transitions, 30 changer transitions 0/303 dead transitions. [2024-06-28 02:00:23,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 303 transitions, 4141 flow [2024-06-28 02:00:23,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:00:23,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:00:23,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 02:00:23,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-28 02:00:23,744 INFO L175 Difference]: Start difference. First operand has 174 places, 254 transitions, 3068 flow. Second operand 6 states and 145 transitions. [2024-06-28 02:00:23,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 303 transitions, 4141 flow [2024-06-28 02:00:24,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 303 transitions, 3870 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-28 02:00:24,024 INFO L231 Difference]: Finished difference. Result has 173 places, 265 transitions, 3051 flow [2024-06-28 02:00:24,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2797, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3051, PETRI_PLACES=173, PETRI_TRANSITIONS=265} [2024-06-28 02:00:24,024 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 119 predicate places. [2024-06-28 02:00:24,024 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 265 transitions, 3051 flow [2024-06-28 02:00:24,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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 02:00:24,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:24,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:24,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:00:24,025 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:24,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:24,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1792177692, now seen corresponding path program 2 times [2024-06-28 02:00:24,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:24,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028741972] [2024-06-28 02:00:24,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:24,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:26,224 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 02:00:26,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:26,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028741972] [2024-06-28 02:00:26,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028741972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:26,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:26,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:00:26,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699990290] [2024-06-28 02:00:26,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:26,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:00:26,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:26,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:00:26,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:00:26,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:00:26,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 265 transitions, 3051 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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 02:00:26,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:26,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:00:26,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:28,475 INFO L124 PetriNetUnfolderBase]: 5120/8153 cut-off events. [2024-06-28 02:00:28,475 INFO L125 PetriNetUnfolderBase]: For 192482/192532 co-relation queries the response was YES. [2024-06-28 02:00:28,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50679 conditions, 8153 events. 5120/8153 cut-off events. For 192482/192532 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 49815 event pairs, 1389 based on Foata normal form. 37/8016 useless extension candidates. Maximal degree in co-relation 50597. Up to 7362 conditions per place. [2024-06-28 02:00:28,565 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 254 selfloop transitions, 33 changer transitions 0/299 dead transitions. [2024-06-28 02:00:28,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 299 transitions, 3888 flow [2024-06-28 02:00:28,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:00:28,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:00:28,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 02:00:28,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 02:00:28,566 INFO L175 Difference]: Start difference. First operand has 173 places, 265 transitions, 3051 flow. Second operand 6 states and 140 transitions. [2024-06-28 02:00:28,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 299 transitions, 3888 flow [2024-06-28 02:00:28,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 299 transitions, 3866 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-06-28 02:00:28,876 INFO L231 Difference]: Finished difference. Result has 179 places, 269 transitions, 3186 flow [2024-06-28 02:00:28,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3033, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3186, PETRI_PLACES=179, PETRI_TRANSITIONS=269} [2024-06-28 02:00:28,877 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 125 predicate places. [2024-06-28 02:00:28,877 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 269 transitions, 3186 flow [2024-06-28 02:00:28,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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 02:00:28,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:28,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:28,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:00:28,877 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 02:00:28,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:28,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1988272739, now seen corresponding path program 1 times [2024-06-28 02:00:28,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:28,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160201646] [2024-06-28 02:00:28,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:28,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:31,632 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 02:00:31,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:31,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160201646] [2024-06-28 02:00:31,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160201646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:31,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:31,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:00:31,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267926236] [2024-06-28 02:00:31,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:31,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:00:31,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:31,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:00:31,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:00:31,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:00:31,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 269 transitions, 3186 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:31,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:31,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:00:31,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:34,081 INFO L124 PetriNetUnfolderBase]: 5545/8690 cut-off events. [2024-06-28 02:00:34,081 INFO L125 PetriNetUnfolderBase]: For 212644/212655 co-relation queries the response was YES. [2024-06-28 02:00:34,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53651 conditions, 8690 events. 5545/8690 cut-off events. For 212644/212655 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 52605 event pairs, 964 based on Foata normal form. 14/8516 useless extension candidates. Maximal degree in co-relation 53565. Up to 7527 conditions per place. [2024-06-28 02:00:34,165 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 276 selfloop transitions, 49 changer transitions 0/332 dead transitions. [2024-06-28 02:00:34,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 332 transitions, 4132 flow [2024-06-28 02:00:34,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:00:34,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:00:34,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-28 02:00:34,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 02:00:34,167 INFO L175 Difference]: Start difference. First operand has 179 places, 269 transitions, 3186 flow. Second operand 9 states and 210 transitions. [2024-06-28 02:00:34,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 332 transitions, 4132 flow [2024-06-28 02:00:34,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 332 transitions, 4060 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-28 02:00:34,489 INFO L231 Difference]: Finished difference. Result has 186 places, 271 transitions, 3315 flow [2024-06-28 02:00:34,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3114, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3315, PETRI_PLACES=186, PETRI_TRANSITIONS=271} [2024-06-28 02:00:34,490 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 132 predicate places. [2024-06-28 02:00:34,490 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 271 transitions, 3315 flow [2024-06-28 02:00:34,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:34,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:34,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:34,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:00:34,491 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:34,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:34,491 INFO L85 PathProgramCache]: Analyzing trace with hash -157397379, now seen corresponding path program 2 times [2024-06-28 02:00:34,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:34,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899675459] [2024-06-28 02:00:34,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:34,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:37,184 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 02:00:37,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:37,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899675459] [2024-06-28 02:00:37,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899675459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:37,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:37,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:00:37,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733732578] [2024-06-28 02:00:37,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:37,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:00:37,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:37,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:00:37,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:00:37,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:00:37,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 271 transitions, 3315 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:37,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:37,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:00:37,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:39,718 INFO L124 PetriNetUnfolderBase]: 5656/8863 cut-off events. [2024-06-28 02:00:39,718 INFO L125 PetriNetUnfolderBase]: For 234550/234561 co-relation queries the response was YES. [2024-06-28 02:00:39,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55839 conditions, 8863 events. 5656/8863 cut-off events. For 234550/234561 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 54048 event pairs, 1455 based on Foata normal form. 14/8689 useless extension candidates. Maximal degree in co-relation 55751. Up to 7790 conditions per place. [2024-06-28 02:00:39,807 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 266 selfloop transitions, 56 changer transitions 0/329 dead transitions. [2024-06-28 02:00:39,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 329 transitions, 4360 flow [2024-06-28 02:00:39,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:00:39,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:00:39,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 02:00:39,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-06-28 02:00:39,809 INFO L175 Difference]: Start difference. First operand has 186 places, 271 transitions, 3315 flow. Second operand 8 states and 190 transitions. [2024-06-28 02:00:39,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 329 transitions, 4360 flow [2024-06-28 02:00:40,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 329 transitions, 4179 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-28 02:00:40,130 INFO L231 Difference]: Finished difference. Result has 188 places, 276 transitions, 3482 flow [2024-06-28 02:00:40,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3134, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3482, PETRI_PLACES=188, PETRI_TRANSITIONS=276} [2024-06-28 02:00:40,131 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 134 predicate places. [2024-06-28 02:00:40,131 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 276 transitions, 3482 flow [2024-06-28 02:00:40,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:40,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:40,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:40,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:00:40,132 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 02:00:40,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:40,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1622225341, now seen corresponding path program 3 times [2024-06-28 02:00:40,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:40,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690570139] [2024-06-28 02:00:40,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:40,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:42,926 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 02:00:42,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:42,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690570139] [2024-06-28 02:00:42,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690570139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:42,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:42,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:00:42,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579989343] [2024-06-28 02:00:42,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:42,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:00:42,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:42,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:00:42,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:00:42,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:00:42,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 276 transitions, 3482 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:42,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:42,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:00:42,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:45,568 INFO L124 PetriNetUnfolderBase]: 5767/9037 cut-off events. [2024-06-28 02:00:45,568 INFO L125 PetriNetUnfolderBase]: For 255973/255984 co-relation queries the response was YES. [2024-06-28 02:00:45,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57329 conditions, 9037 events. 5767/9037 cut-off events. For 255973/255984 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 55329 event pairs, 1488 based on Foata normal form. 14/8863 useless extension candidates. Maximal degree in co-relation 57239. Up to 7875 conditions per place. [2024-06-28 02:00:45,659 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 248 selfloop transitions, 89 changer transitions 0/344 dead transitions. [2024-06-28 02:00:45,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 344 transitions, 4627 flow [2024-06-28 02:00:45,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:00:45,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:00:45,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-28 02:00:45,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976851851851852 [2024-06-28 02:00:45,660 INFO L175 Difference]: Start difference. First operand has 188 places, 276 transitions, 3482 flow. Second operand 9 states and 215 transitions. [2024-06-28 02:00:45,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 344 transitions, 4627 flow [2024-06-28 02:00:46,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 344 transitions, 4376 flow, removed 95 selfloop flow, removed 4 redundant places. [2024-06-28 02:00:46,072 INFO L231 Difference]: Finished difference. Result has 194 places, 281 transitions, 3655 flow [2024-06-28 02:00:46,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3231, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3655, PETRI_PLACES=194, PETRI_TRANSITIONS=281} [2024-06-28 02:00:46,072 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 140 predicate places. [2024-06-28 02:00:46,072 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 281 transitions, 3655 flow [2024-06-28 02:00:46,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:46,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:46,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:46,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:00:46,073 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 02:00:46,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:46,074 INFO L85 PathProgramCache]: Analyzing trace with hash 580159973, now seen corresponding path program 4 times [2024-06-28 02:00:46,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:46,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278245072] [2024-06-28 02:00:46,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:46,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:49,100 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 02:00:49,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:49,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278245072] [2024-06-28 02:00:49,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278245072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:49,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:49,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:00:49,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371445126] [2024-06-28 02:00:49,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:49,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:00:49,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:49,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:00:49,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:00:49,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:00:49,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 281 transitions, 3655 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:49,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:49,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:00:49,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:51,752 INFO L124 PetriNetUnfolderBase]: 5873/9202 cut-off events. [2024-06-28 02:00:51,753 INFO L125 PetriNetUnfolderBase]: For 271535/271546 co-relation queries the response was YES. [2024-06-28 02:00:51,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59022 conditions, 9202 events. 5873/9202 cut-off events. For 271535/271546 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 56411 event pairs, 1535 based on Foata normal form. 14/9028 useless extension candidates. Maximal degree in co-relation 58929. Up to 8170 conditions per place. [2024-06-28 02:00:51,842 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 288 selfloop transitions, 48 changer transitions 0/343 dead transitions. [2024-06-28 02:00:51,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 343 transitions, 4649 flow [2024-06-28 02:00:51,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:00:51,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:00:51,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-28 02:00:51,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 02:00:51,844 INFO L175 Difference]: Start difference. First operand has 194 places, 281 transitions, 3655 flow. Second operand 9 states and 210 transitions. [2024-06-28 02:00:51,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 343 transitions, 4649 flow [2024-06-28 02:00:52,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 343 transitions, 4349 flow, removed 100 selfloop flow, removed 5 redundant places. [2024-06-28 02:00:52,313 INFO L231 Difference]: Finished difference. Result has 198 places, 283 transitions, 3566 flow [2024-06-28 02:00:52,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3355, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3566, PETRI_PLACES=198, PETRI_TRANSITIONS=283} [2024-06-28 02:00:52,314 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 144 predicate places. [2024-06-28 02:00:52,314 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 283 transitions, 3566 flow [2024-06-28 02:00:52,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:52,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:52,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:52,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:00:52,315 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 02:00:52,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:52,315 INFO L85 PathProgramCache]: Analyzing trace with hash 574653443, now seen corresponding path program 5 times [2024-06-28 02:00:52,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:52,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290743354] [2024-06-28 02:00:52,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:52,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:55,251 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 02:00:55,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:55,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290743354] [2024-06-28 02:00:55,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290743354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:55,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:55,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:00:55,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640254306] [2024-06-28 02:00:55,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:55,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:00:55,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:55,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:00:55,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:00:55,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:00:55,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 283 transitions, 3566 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:55,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:55,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:00:55,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:57,922 INFO L124 PetriNetUnfolderBase]: 5866/9189 cut-off events. [2024-06-28 02:00:57,922 INFO L125 PetriNetUnfolderBase]: For 266951/266962 co-relation queries the response was YES. [2024-06-28 02:00:57,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58351 conditions, 9189 events. 5866/9189 cut-off events. For 266951/266962 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 56309 event pairs, 1522 based on Foata normal form. 14/9015 useless extension candidates. Maximal degree in co-relation 58256. Up to 8133 conditions per place. [2024-06-28 02:00:58,009 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 290 selfloop transitions, 47 changer transitions 0/344 dead transitions. [2024-06-28 02:00:58,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 344 transitions, 4486 flow [2024-06-28 02:00:58,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:00:58,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:00:58,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-28 02:00:58,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-28 02:00:58,011 INFO L175 Difference]: Start difference. First operand has 198 places, 283 transitions, 3566 flow. Second operand 9 states and 208 transitions. [2024-06-28 02:00:58,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 344 transitions, 4486 flow [2024-06-28 02:00:58,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 344 transitions, 4301 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-28 02:00:58,439 INFO L231 Difference]: Finished difference. Result has 199 places, 284 transitions, 3528 flow [2024-06-28 02:00:58,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3317, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3528, PETRI_PLACES=199, PETRI_TRANSITIONS=284} [2024-06-28 02:00:58,441 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 145 predicate places. [2024-06-28 02:00:58,441 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 284 transitions, 3528 flow [2024-06-28 02:00:58,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:58,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:58,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:58,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:00:58,442 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:58,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:58,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1919398894, now seen corresponding path program 1 times [2024-06-28 02:00:58,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:58,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981558644] [2024-06-28 02:00:58,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:58,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:00,719 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 02:01:00,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:00,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981558644] [2024-06-28 02:01:00,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981558644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:00,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:00,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:01:00,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350833558] [2024-06-28 02:01:00,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:00,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:01:00,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:00,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:01:00,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:01:00,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:01:00,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 284 transitions, 3528 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 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 02:01:00,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:00,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:01:00,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:03,377 INFO L124 PetriNetUnfolderBase]: 5677/8989 cut-off events. [2024-06-28 02:01:03,377 INFO L125 PetriNetUnfolderBase]: For 261314/261374 co-relation queries the response was YES. [2024-06-28 02:01:03,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56469 conditions, 8989 events. 5677/8989 cut-off events. For 261314/261374 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 56084 event pairs, 1497 based on Foata normal form. 60/8833 useless extension candidates. Maximal degree in co-relation 56373. Up to 7969 conditions per place. [2024-06-28 02:01:03,458 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 247 selfloop transitions, 44 changer transitions 0/315 dead transitions. [2024-06-28 02:01:03,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 315 transitions, 4352 flow [2024-06-28 02:01:03,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:01:03,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:01:03,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-28 02:01:03,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-28 02:01:03,460 INFO L175 Difference]: Start difference. First operand has 199 places, 284 transitions, 3528 flow. Second operand 6 states and 141 transitions. [2024-06-28 02:01:03,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 315 transitions, 4352 flow [2024-06-28 02:01:03,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 315 transitions, 4165 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-28 02:01:03,845 INFO L231 Difference]: Finished difference. Result has 198 places, 287 transitions, 3482 flow [2024-06-28 02:01:03,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3341, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3482, PETRI_PLACES=198, PETRI_TRANSITIONS=287} [2024-06-28 02:01:03,845 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 144 predicate places. [2024-06-28 02:01:03,845 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 287 transitions, 3482 flow [2024-06-28 02:01:03,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 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 02:01:03,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:03,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:03,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:01:03,846 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:03,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:03,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1385029126, now seen corresponding path program 2 times [2024-06-28 02:01:03,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:03,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478290024] [2024-06-28 02:01:03,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:03,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:06,195 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 02:01:06,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:06,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478290024] [2024-06-28 02:01:06,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478290024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:06,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:06,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:01:06,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313295340] [2024-06-28 02:01:06,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:06,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:01:06,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:06,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:01:06,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:01:06,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:01:06,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 287 transitions, 3482 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 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 02:01:06,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:06,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:01:06,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:08,733 INFO L124 PetriNetUnfolderBase]: 5665/8971 cut-off events. [2024-06-28 02:01:08,733 INFO L125 PetriNetUnfolderBase]: For 251826/251886 co-relation queries the response was YES. [2024-06-28 02:01:08,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56227 conditions, 8971 events. 5665/8971 cut-off events. For 251826/251886 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 56027 event pairs, 1495 based on Foata normal form. 60/8819 useless extension candidates. Maximal degree in co-relation 56130. Up to 7915 conditions per place. [2024-06-28 02:01:08,848 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 255 selfloop transitions, 47 changer transitions 0/326 dead transitions. [2024-06-28 02:01:08,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 326 transitions, 4420 flow [2024-06-28 02:01:08,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:01:08,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:01:08,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 02:01:08,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-28 02:01:08,849 INFO L175 Difference]: Start difference. First operand has 198 places, 287 transitions, 3482 flow. Second operand 7 states and 163 transitions. [2024-06-28 02:01:08,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 326 transitions, 4420 flow [2024-06-28 02:01:09,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 326 transitions, 4323 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 02:01:09,253 INFO L231 Difference]: Finished difference. Result has 201 places, 290 transitions, 3533 flow [2024-06-28 02:01:09,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3389, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3533, PETRI_PLACES=201, PETRI_TRANSITIONS=290} [2024-06-28 02:01:09,253 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 147 predicate places. [2024-06-28 02:01:09,253 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 290 transitions, 3533 flow [2024-06-28 02:01:09,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 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 02:01:09,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:09,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:09,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:01:09,254 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 02:01:09,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:09,254 INFO L85 PathProgramCache]: Analyzing trace with hash 118100, now seen corresponding path program 1 times [2024-06-28 02:01:09,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:09,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546002294] [2024-06-28 02:01:09,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:09,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:11,733 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 02:01:11,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:11,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546002294] [2024-06-28 02:01:11,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546002294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:11,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:11,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:01:11,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990493346] [2024-06-28 02:01:11,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:11,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:01:11,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:11,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:01:11,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:01:11,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:01:11,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 290 transitions, 3533 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 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 02:01:11,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:11,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:01:11,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:13,936 INFO L124 PetriNetUnfolderBase]: 5661/9044 cut-off events. [2024-06-28 02:01:13,936 INFO L125 PetriNetUnfolderBase]: For 257494/257532 co-relation queries the response was YES. [2024-06-28 02:01:14,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58199 conditions, 9044 events. 5661/9044 cut-off events. For 257494/257532 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 56401 event pairs, 1546 based on Foata normal form. 30/8864 useless extension candidates. Maximal degree in co-relation 58101. Up to 8223 conditions per place. [2024-06-28 02:01:14,038 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 298 selfloop transitions, 26 changer transitions 0/336 dead transitions. [2024-06-28 02:01:14,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 336 transitions, 4525 flow [2024-06-28 02:01:14,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:01:14,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:01:14,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-28 02:01:14,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-28 02:01:14,045 INFO L175 Difference]: Start difference. First operand has 201 places, 290 transitions, 3533 flow. Second operand 7 states and 162 transitions. [2024-06-28 02:01:14,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 336 transitions, 4525 flow [2024-06-28 02:01:14,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 336 transitions, 4421 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 02:01:14,541 INFO L231 Difference]: Finished difference. Result has 204 places, 296 transitions, 3647 flow [2024-06-28 02:01:14,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3429, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3647, PETRI_PLACES=204, PETRI_TRANSITIONS=296} [2024-06-28 02:01:14,542 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 150 predicate places. [2024-06-28 02:01:14,542 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 296 transitions, 3647 flow [2024-06-28 02:01:14,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 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 02:01:14,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:14,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:14,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:01:14,542 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 02:01:14,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:14,542 INFO L85 PathProgramCache]: Analyzing trace with hash 130562704, now seen corresponding path program 1 times [2024-06-28 02:01:14,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:14,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443517985] [2024-06-28 02:01:14,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:14,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:17,016 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 02:01:17,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:17,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443517985] [2024-06-28 02:01:17,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443517985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:17,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:17,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:01:17,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969650417] [2024-06-28 02:01:17,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:17,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:01:17,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:17,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:01:17,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:01:17,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:01:17,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 296 transitions, 3647 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:17,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:17,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:01:17,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:19,621 INFO L124 PetriNetUnfolderBase]: 6048/9453 cut-off events. [2024-06-28 02:01:19,621 INFO L125 PetriNetUnfolderBase]: For 269107/269109 co-relation queries the response was YES. [2024-06-28 02:01:19,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60453 conditions, 9453 events. 6048/9453 cut-off events. For 269107/269109 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 57895 event pairs, 1564 based on Foata normal form. 2/9273 useless extension candidates. Maximal degree in co-relation 60353. Up to 8626 conditions per place. [2024-06-28 02:01:19,724 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 325 selfloop transitions, 28 changer transitions 0/360 dead transitions. [2024-06-28 02:01:19,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 360 transitions, 5057 flow [2024-06-28 02:01:19,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:01:19,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:01:19,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-28 02:01:19,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-06-28 02:01:19,726 INFO L175 Difference]: Start difference. First operand has 204 places, 296 transitions, 3647 flow. Second operand 7 states and 164 transitions. [2024-06-28 02:01:19,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 360 transitions, 5057 flow [2024-06-28 02:01:20,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 360 transitions, 4953 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-28 02:01:20,304 INFO L231 Difference]: Finished difference. Result has 210 places, 312 transitions, 3859 flow [2024-06-28 02:01:20,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3546, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3859, PETRI_PLACES=210, PETRI_TRANSITIONS=312} [2024-06-28 02:01:20,305 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 156 predicate places. [2024-06-28 02:01:20,305 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 312 transitions, 3859 flow [2024-06-28 02:01:20,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:20,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:20,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:20,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:01:20,306 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 02:01:20,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:20,307 INFO L85 PathProgramCache]: Analyzing trace with hash 130562518, now seen corresponding path program 2 times [2024-06-28 02:01:20,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:20,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302938216] [2024-06-28 02:01:20,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:20,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:22,450 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 02:01:22,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:22,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302938216] [2024-06-28 02:01:22,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302938216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:22,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:22,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:01:22,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470651992] [2024-06-28 02:01:22,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:22,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:01:22,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:22,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:01:22,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:01:22,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:01:22,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 312 transitions, 3859 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 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 02:01:22,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:22,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:01:22,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:24,930 INFO L124 PetriNetUnfolderBase]: 5792/9210 cut-off events. [2024-06-28 02:01:24,931 INFO L125 PetriNetUnfolderBase]: For 275382/275420 co-relation queries the response was YES. [2024-06-28 02:01:24,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60536 conditions, 9210 events. 5792/9210 cut-off events. For 275382/275420 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 57430 event pairs, 1559 based on Foata normal form. 30/9029 useless extension candidates. Maximal degree in co-relation 60432. Up to 8310 conditions per place. [2024-06-28 02:01:25,033 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 315 selfloop transitions, 36 changer transitions 0/366 dead transitions. [2024-06-28 02:01:25,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 366 transitions, 5039 flow [2024-06-28 02:01:25,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:01:25,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:01:25,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-28 02:01:25,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2024-06-28 02:01:25,035 INFO L175 Difference]: Start difference. First operand has 210 places, 312 transitions, 3859 flow. Second operand 7 states and 158 transitions. [2024-06-28 02:01:25,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 366 transitions, 5039 flow [2024-06-28 02:01:25,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 366 transitions, 4999 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 02:01:25,547 INFO L231 Difference]: Finished difference. Result has 217 places, 333 transitions, 4303 flow [2024-06-28 02:01:25,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3821, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4303, PETRI_PLACES=217, PETRI_TRANSITIONS=333} [2024-06-28 02:01:25,547 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 163 predicate places. [2024-06-28 02:01:25,547 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 333 transitions, 4303 flow [2024-06-28 02:01:25,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 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 02:01:25,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:25,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:25,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:01:25,548 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:25,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:25,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1093479296, now seen corresponding path program 2 times [2024-06-28 02:01:25,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:25,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314965581] [2024-06-28 02:01:25,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:25,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:27,811 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 02:01:27,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:27,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314965581] [2024-06-28 02:01:27,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314965581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:27,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:27,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:01:27,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625430213] [2024-06-28 02:01:27,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:27,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:01:27,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:27,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:01:27,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:01:27,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:01:27,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 333 transitions, 4303 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:27,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:27,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:01:27,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:30,613 INFO L124 PetriNetUnfolderBase]: 6140/9605 cut-off events. [2024-06-28 02:01:30,613 INFO L125 PetriNetUnfolderBase]: For 290670/290686 co-relation queries the response was YES. [2024-06-28 02:01:30,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63568 conditions, 9605 events. 6140/9605 cut-off events. For 290670/290686 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 59029 event pairs, 1563 based on Foata normal form. 16/9428 useless extension candidates. Maximal degree in co-relation 63460. Up to 8728 conditions per place. [2024-06-28 02:01:30,711 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 336 selfloop transitions, 39 changer transitions 0/382 dead transitions. [2024-06-28 02:01:30,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 382 transitions, 5569 flow [2024-06-28 02:01:30,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:01:30,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:01:30,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-28 02:01:30,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2024-06-28 02:01:30,713 INFO L175 Difference]: Start difference. First operand has 217 places, 333 transitions, 4303 flow. Second operand 7 states and 158 transitions. [2024-06-28 02:01:30,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 382 transitions, 5569 flow [2024-06-28 02:01:31,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 382 transitions, 5407 flow, removed 80 selfloop flow, removed 1 redundant places. [2024-06-28 02:01:31,291 INFO L231 Difference]: Finished difference. Result has 224 places, 340 transitions, 4344 flow [2024-06-28 02:01:31,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4179, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4344, PETRI_PLACES=224, PETRI_TRANSITIONS=340} [2024-06-28 02:01:31,292 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 170 predicate places. [2024-06-28 02:01:31,292 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 340 transitions, 4344 flow [2024-06-28 02:01:31,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:31,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:31,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:31,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:01:31,293 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:31,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:31,293 INFO L85 PathProgramCache]: Analyzing trace with hash 5802260, now seen corresponding path program 3 times [2024-06-28 02:01:31,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:31,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541841643] [2024-06-28 02:01:31,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:31,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:33,331 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 02:01:33,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:33,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541841643] [2024-06-28 02:01:33,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541841643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:33,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:33,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:01:33,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009749164] [2024-06-28 02:01:33,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:33,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:01:33,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:33,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:01:33,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:01:33,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:01:33,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 340 transitions, 4344 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 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 02:01:33,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:33,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:01:33,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:36,012 INFO L124 PetriNetUnfolderBase]: 5831/9283 cut-off events. [2024-06-28 02:01:36,012 INFO L125 PetriNetUnfolderBase]: For 296066/296144 co-relation queries the response was YES. [2024-06-28 02:01:36,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62513 conditions, 9283 events. 5831/9283 cut-off events. For 296066/296144 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 58068 event pairs, 1570 based on Foata normal form. 57/9125 useless extension candidates. Maximal degree in co-relation 62401. Up to 8368 conditions per place. [2024-06-28 02:01:36,108 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 318 selfloop transitions, 37 changer transitions 0/373 dead transitions. [2024-06-28 02:01:36,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 373 transitions, 5270 flow [2024-06-28 02:01:36,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:01:36,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:01:36,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-28 02:01:36,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 02:01:36,110 INFO L175 Difference]: Start difference. First operand has 224 places, 340 transitions, 4344 flow. Second operand 7 states and 154 transitions. [2024-06-28 02:01:36,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 373 transitions, 5270 flow [2024-06-28 02:01:36,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 373 transitions, 5235 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 02:01:36,648 INFO L231 Difference]: Finished difference. Result has 229 places, 343 transitions, 4454 flow [2024-06-28 02:01:36,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4309, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4454, PETRI_PLACES=229, PETRI_TRANSITIONS=343} [2024-06-28 02:01:36,649 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 175 predicate places. [2024-06-28 02:01:36,649 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 343 transitions, 4454 flow [2024-06-28 02:01:36,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 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 02:01:36,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:36,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:36,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:01:36,649 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:36,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:36,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1385290084, now seen corresponding path program 3 times [2024-06-28 02:01:36,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:36,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713385272] [2024-06-28 02:01:36,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:36,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:38,877 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 02:01:38,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:38,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713385272] [2024-06-28 02:01:38,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713385272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:38,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:38,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:01:38,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790358108] [2024-06-28 02:01:38,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:38,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:01:38,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:38,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:01:38,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:01:38,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:01:38,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 343 transitions, 4454 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:38,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:38,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:01:38,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:41,704 INFO L124 PetriNetUnfolderBase]: 6144/9617 cut-off events. [2024-06-28 02:01:41,704 INFO L125 PetriNetUnfolderBase]: For 305062/305078 co-relation queries the response was YES. [2024-06-28 02:01:41,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64580 conditions, 9617 events. 6144/9617 cut-off events. For 305062/305078 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 59139 event pairs, 1562 based on Foata normal form. 16/9438 useless extension candidates. Maximal degree in co-relation 64466. Up to 8737 conditions per place. [2024-06-28 02:01:42,037 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 342 selfloop transitions, 37 changer transitions 0/386 dead transitions. [2024-06-28 02:01:42,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 386 transitions, 5580 flow [2024-06-28 02:01:42,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:01:42,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:01:42,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 02:01:42,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732142857142857 [2024-06-28 02:01:42,038 INFO L175 Difference]: Start difference. First operand has 229 places, 343 transitions, 4454 flow. Second operand 7 states and 159 transitions. [2024-06-28 02:01:42,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 386 transitions, 5580 flow [2024-06-28 02:01:42,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 386 transitions, 5446 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-28 02:01:42,556 INFO L231 Difference]: Finished difference. Result has 232 places, 343 transitions, 4418 flow [2024-06-28 02:01:42,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4337, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4418, PETRI_PLACES=232, PETRI_TRANSITIONS=343} [2024-06-28 02:01:42,556 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 178 predicate places. [2024-06-28 02:01:42,556 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 343 transitions, 4418 flow [2024-06-28 02:01:42,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:42,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:42,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:42,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:01:42,557 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:42,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:42,557 INFO L85 PathProgramCache]: Analyzing trace with hash 337492974, now seen corresponding path program 1 times [2024-06-28 02:01:42,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:42,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801934840] [2024-06-28 02:01:42,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:42,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:45,511 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 02:01:45,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:45,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801934840] [2024-06-28 02:01:45,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801934840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:45,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:45,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:01:45,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371547574] [2024-06-28 02:01:45,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:45,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:01:45,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:45,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:01:45,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:01:45,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:01:45,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 343 transitions, 4418 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 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 02:01:45,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:45,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:01:45,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:48,401 INFO L124 PetriNetUnfolderBase]: 5858/9286 cut-off events. [2024-06-28 02:01:48,401 INFO L125 PetriNetUnfolderBase]: For 301331/301394 co-relation queries the response was YES. [2024-06-28 02:01:48,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61909 conditions, 9286 events. 5858/9286 cut-off events. For 301331/301394 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 58246 event pairs, 1530 based on Foata normal form. 51/9116 useless extension candidates. Maximal degree in co-relation 61794. Up to 8339 conditions per place. [2024-06-28 02:01:48,516 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 331 selfloop transitions, 20 changer transitions 0/382 dead transitions. [2024-06-28 02:01:48,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 382 transitions, 5431 flow [2024-06-28 02:01:48,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:01:48,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:01:48,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 02:01:48,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732142857142857 [2024-06-28 02:01:48,517 INFO L175 Difference]: Start difference. First operand has 232 places, 343 transitions, 4418 flow. Second operand 7 states and 159 transitions. [2024-06-28 02:01:48,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 382 transitions, 5431 flow [2024-06-28 02:01:49,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 382 transitions, 5371 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 02:01:49,207 INFO L231 Difference]: Finished difference. Result has 235 places, 345 transitions, 4423 flow [2024-06-28 02:01:49,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4358, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4423, PETRI_PLACES=235, PETRI_TRANSITIONS=345} [2024-06-28 02:01:49,208 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 181 predicate places. [2024-06-28 02:01:49,208 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 345 transitions, 4423 flow [2024-06-28 02:01:49,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 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 02:01:49,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:49,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:49,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:01:49,208 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 02:01:49,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:49,209 INFO L85 PathProgramCache]: Analyzing trace with hash 3572247, now seen corresponding path program 1 times [2024-06-28 02:01:49,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:49,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138806776] [2024-06-28 02:01:49,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:49,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:52,773 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 02:01:52,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:52,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138806776] [2024-06-28 02:01:52,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138806776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:52,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:52,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:01:52,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360023112] [2024-06-28 02:01:52,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:52,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:01:52,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:52,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:01:52,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:01:52,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:01:52,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 345 transitions, 4423 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 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 02:01:52,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:52,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:01:52,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:55,353 INFO L124 PetriNetUnfolderBase]: 5944/9447 cut-off events. [2024-06-28 02:01:55,353 INFO L125 PetriNetUnfolderBase]: For 315309/315347 co-relation queries the response was YES. [2024-06-28 02:01:55,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64561 conditions, 9447 events. 5944/9447 cut-off events. For 315309/315347 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 59264 event pairs, 1465 based on Foata normal form. 30/9257 useless extension candidates. Maximal degree in co-relation 64444. Up to 8389 conditions per place. [2024-06-28 02:01:55,465 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 347 selfloop transitions, 38 changer transitions 0/404 dead transitions. [2024-06-28 02:01:55,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 404 transitions, 5729 flow [2024-06-28 02:01:55,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:01:55,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:01:55,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 02:01:55,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-06-28 02:01:55,467 INFO L175 Difference]: Start difference. First operand has 235 places, 345 transitions, 4423 flow. Second operand 8 states and 190 transitions. [2024-06-28 02:01:55,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 404 transitions, 5729 flow [2024-06-28 02:01:56,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 404 transitions, 5684 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 02:01:56,114 INFO L231 Difference]: Finished difference. Result has 239 places, 352 transitions, 4628 flow [2024-06-28 02:01:56,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4378, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4628, PETRI_PLACES=239, PETRI_TRANSITIONS=352} [2024-06-28 02:01:56,115 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 185 predicate places. [2024-06-28 02:01:56,115 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 352 transitions, 4628 flow [2024-06-28 02:01:56,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 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 02:01:56,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:56,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:56,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:01:56,116 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:56,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:56,116 INFO L85 PathProgramCache]: Analyzing trace with hash -251246951, now seen corresponding path program 2 times [2024-06-28 02:01:56,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:56,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969259149] [2024-06-28 02:01:56,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:56,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:59,553 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 02:01:59,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:59,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969259149] [2024-06-28 02:01:59,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969259149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:59,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:59,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:01:59,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837839064] [2024-06-28 02:01:59,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:59,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:01:59,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:59,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:01:59,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:01:59,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:01:59,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 352 transitions, 4628 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 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 02:01:59,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:59,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:01:59,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:02,115 INFO L124 PetriNetUnfolderBase]: 5949/9458 cut-off events. [2024-06-28 02:02:02,116 INFO L125 PetriNetUnfolderBase]: For 326881/326919 co-relation queries the response was YES. [2024-06-28 02:02:02,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66091 conditions, 9458 events. 5949/9458 cut-off events. For 326881/326919 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 59331 event pairs, 1471 based on Foata normal form. 30/9268 useless extension candidates. Maximal degree in co-relation 65972. Up to 8486 conditions per place. [2024-06-28 02:02:02,231 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 354 selfloop transitions, 32 changer transitions 0/405 dead transitions. [2024-06-28 02:02:02,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 405 transitions, 5792 flow [2024-06-28 02:02:02,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:02:02,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:02:02,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-28 02:02:02,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765625 [2024-06-28 02:02:02,233 INFO L175 Difference]: Start difference. First operand has 239 places, 352 transitions, 4628 flow. Second operand 8 states and 183 transitions. [2024-06-28 02:02:02,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 405 transitions, 5792 flow [2024-06-28 02:02:02,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 405 transitions, 5716 flow, removed 33 selfloop flow, removed 2 redundant places. [2024-06-28 02:02:02,883 INFO L231 Difference]: Finished difference. Result has 246 places, 359 transitions, 4798 flow [2024-06-28 02:02:02,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4572, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4798, PETRI_PLACES=246, PETRI_TRANSITIONS=359} [2024-06-28 02:02:02,884 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 192 predicate places. [2024-06-28 02:02:02,884 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 359 transitions, 4798 flow [2024-06-28 02:02:02,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 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 02:02:02,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:02,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:02,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:02:02,885 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:02,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:02,886 INFO L85 PathProgramCache]: Analyzing trace with hash -251246796, now seen corresponding path program 1 times [2024-06-28 02:02:02,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:02,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165650391] [2024-06-28 02:02:02,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:02,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:05,684 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 02:02:05,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:05,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165650391] [2024-06-28 02:02:05,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165650391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:05,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:05,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:02:05,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628493067] [2024-06-28 02:02:05,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:05,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:02:05,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:05,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:02:05,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:02:05,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:02:05,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 359 transitions, 4798 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:02:05,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:05,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:02:05,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:08,404 INFO L124 PetriNetUnfolderBase]: 6307/9864 cut-off events. [2024-06-28 02:02:08,405 INFO L125 PetriNetUnfolderBase]: For 343485/343487 co-relation queries the response was YES. [2024-06-28 02:02:08,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68469 conditions, 9864 events. 6307/9864 cut-off events. For 343485/343487 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 61146 event pairs, 1574 based on Foata normal form. 2/9662 useless extension candidates. Maximal degree in co-relation 68346. Up to 9072 conditions per place. [2024-06-28 02:02:08,511 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 390 selfloop transitions, 23 changer transitions 0/420 dead transitions. [2024-06-28 02:02:08,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 420 transitions, 6166 flow [2024-06-28 02:02:08,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:02:08,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:02:08,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-28 02:02:08,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609375 [2024-06-28 02:02:08,513 INFO L175 Difference]: Start difference. First operand has 246 places, 359 transitions, 4798 flow. Second operand 8 states and 177 transitions. [2024-06-28 02:02:08,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 420 transitions, 6166 flow [2024-06-28 02:02:09,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 420 transitions, 5950 flow, removed 76 selfloop flow, removed 5 redundant places. [2024-06-28 02:02:09,251 INFO L231 Difference]: Finished difference. Result has 252 places, 374 transitions, 4982 flow [2024-06-28 02:02:09,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4662, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4982, PETRI_PLACES=252, PETRI_TRANSITIONS=374} [2024-06-28 02:02:09,251 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 198 predicate places. [2024-06-28 02:02:09,251 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 374 transitions, 4982 flow [2024-06-28 02:02:09,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:02:09,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:09,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:09,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:02:09,252 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:09,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:09,252 INFO L85 PathProgramCache]: Analyzing trace with hash -247527726, now seen corresponding path program 2 times [2024-06-28 02:02:09,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:09,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559630951] [2024-06-28 02:02:09,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:09,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:11,885 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 02:02:11,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:11,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559630951] [2024-06-28 02:02:11,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559630951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:11,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:11,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:02:11,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992787377] [2024-06-28 02:02:11,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:11,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:02:11,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:11,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:02:11,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:02:11,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:02:11,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 374 transitions, 4982 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:02:11,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:11,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:02:11,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:14,602 INFO L124 PetriNetUnfolderBase]: 6405/9999 cut-off events. [2024-06-28 02:02:14,602 INFO L125 PetriNetUnfolderBase]: For 360288/360290 co-relation queries the response was YES. [2024-06-28 02:02:14,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70412 conditions, 9999 events. 6405/9999 cut-off events. For 360288/360290 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 61819 event pairs, 1579 based on Foata normal form. 2/9796 useless extension candidates. Maximal degree in co-relation 70285. Up to 9137 conditions per place. [2024-06-28 02:02:14,734 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 397 selfloop transitions, 40 changer transitions 0/444 dead transitions. [2024-06-28 02:02:14,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 444 transitions, 6527 flow [2024-06-28 02:02:14,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:02:14,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:02:14,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-28 02:02:14,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4661458333333333 [2024-06-28 02:02:14,735 INFO L175 Difference]: Start difference. First operand has 252 places, 374 transitions, 4982 flow. Second operand 8 states and 179 transitions. [2024-06-28 02:02:14,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 444 transitions, 6527 flow [2024-06-28 02:02:15,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 444 transitions, 6446 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-06-28 02:02:15,671 INFO L231 Difference]: Finished difference. Result has 262 places, 402 transitions, 5404 flow [2024-06-28 02:02:15,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4901, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5404, PETRI_PLACES=262, PETRI_TRANSITIONS=402} [2024-06-28 02:02:15,672 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 208 predicate places. [2024-06-28 02:02:15,672 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 402 transitions, 5404 flow [2024-06-28 02:02:15,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:02:15,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:15,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:15,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:02:15,672 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:15,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:15,672 INFO L85 PathProgramCache]: Analyzing trace with hash -247527881, now seen corresponding path program 3 times [2024-06-28 02:02:15,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:15,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475551436] [2024-06-28 02:02:15,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:15,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:18,866 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 02:02:18,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:18,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475551436] [2024-06-28 02:02:18,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475551436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:18,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:18,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:02:18,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796767609] [2024-06-28 02:02:18,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:18,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:02:18,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:18,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:02:18,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:02:18,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:02:18,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 402 transitions, 5404 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 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 02:02:18,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:18,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:02:18,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:21,708 INFO L124 PetriNetUnfolderBase]: 6175/9786 cut-off events. [2024-06-28 02:02:21,708 INFO L125 PetriNetUnfolderBase]: For 377136/377152 co-relation queries the response was YES. [2024-06-28 02:02:21,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72018 conditions, 9786 events. 6175/9786 cut-off events. For 377136/377152 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 61367 event pairs, 1549 based on Foata normal form. 14/9584 useless extension candidates. Maximal degree in co-relation 71885. Up to 8685 conditions per place. [2024-06-28 02:02:21,835 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 366 selfloop transitions, 47 changer transitions 0/445 dead transitions. [2024-06-28 02:02:21,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 445 transitions, 6524 flow [2024-06-28 02:02:21,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:02:21,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:02:21,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-28 02:02:21,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4661458333333333 [2024-06-28 02:02:21,837 INFO L175 Difference]: Start difference. First operand has 262 places, 402 transitions, 5404 flow. Second operand 8 states and 179 transitions. [2024-06-28 02:02:21,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 445 transitions, 6524 flow [2024-06-28 02:02:22,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 445 transitions, 6424 flow, removed 49 selfloop flow, removed 1 redundant places. [2024-06-28 02:02:22,790 INFO L231 Difference]: Finished difference. Result has 269 places, 406 transitions, 5518 flow [2024-06-28 02:02:22,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5304, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5518, PETRI_PLACES=269, PETRI_TRANSITIONS=406} [2024-06-28 02:02:22,791 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 215 predicate places. [2024-06-28 02:02:22,791 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 406 transitions, 5518 flow [2024-06-28 02:02:22,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 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 02:02:22,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:22,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:22,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:02:22,791 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:22,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:22,792 INFO L85 PathProgramCache]: Analyzing trace with hash 7387262, now seen corresponding path program 3 times [2024-06-28 02:02:22,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:22,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846572696] [2024-06-28 02:02:22,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:22,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:25,594 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 02:02:25,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:25,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846572696] [2024-06-28 02:02:25,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846572696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:25,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:25,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:02:25,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101277907] [2024-06-28 02:02:25,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:25,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:02:25,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:25,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:02:25,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:02:25,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:02:25,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 406 transitions, 5518 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:02:25,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:25,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:02:25,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:28,881 INFO L124 PetriNetUnfolderBase]: 6476/10105 cut-off events. [2024-06-28 02:02:28,881 INFO L125 PetriNetUnfolderBase]: For 395462/395464 co-relation queries the response was YES. [2024-06-28 02:02:28,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75286 conditions, 10105 events. 6476/10105 cut-off events. For 395462/395464 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 62448 event pairs, 1566 based on Foata normal form. 3/9900 useless extension candidates. Maximal degree in co-relation 75150. Up to 9136 conditions per place. [2024-06-28 02:02:28,991 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 400 selfloop transitions, 55 changer transitions 0/462 dead transitions. [2024-06-28 02:02:28,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 462 transitions, 7037 flow [2024-06-28 02:02:28,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:02:28,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:02:28,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-28 02:02:28,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 02:02:28,993 INFO L175 Difference]: Start difference. First operand has 269 places, 406 transitions, 5518 flow. Second operand 8 states and 184 transitions. [2024-06-28 02:02:28,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 462 transitions, 7037 flow [2024-06-28 02:02:29,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 462 transitions, 6839 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-28 02:02:29,814 INFO L231 Difference]: Finished difference. Result has 271 places, 410 transitions, 5513 flow [2024-06-28 02:02:29,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5322, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5513, PETRI_PLACES=271, PETRI_TRANSITIONS=410} [2024-06-28 02:02:29,815 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 217 predicate places. [2024-06-28 02:02:29,815 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 410 transitions, 5513 flow [2024-06-28 02:02:29,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:02:29,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:29,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:29,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:02:29,816 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:29,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:29,816 INFO L85 PathProgramCache]: Analyzing trace with hash -849675806, now seen corresponding path program 4 times [2024-06-28 02:02:29,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:29,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495904738] [2024-06-28 02:02:29,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:29,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:29,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:32,331 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 02:02:32,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:32,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495904738] [2024-06-28 02:02:32,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495904738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:32,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:32,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:02:32,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133927659] [2024-06-28 02:02:32,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:32,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:02:32,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:32,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:02:32,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:02:32,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:02:32,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 410 transitions, 5513 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:02:32,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:32,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:02:32,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:35,359 INFO L124 PetriNetUnfolderBase]: 6522/10173 cut-off events. [2024-06-28 02:02:35,360 INFO L125 PetriNetUnfolderBase]: For 408917/408935 co-relation queries the response was YES. [2024-06-28 02:02:35,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76595 conditions, 10173 events. 6522/10173 cut-off events. For 408917/408935 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 62932 event pairs, 1590 based on Foata normal form. 18/9981 useless extension candidates. Maximal degree in co-relation 76458. Up to 9340 conditions per place. [2024-06-28 02:02:35,493 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 401 selfloop transitions, 39 changer transitions 0/447 dead transitions. [2024-06-28 02:02:35,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 447 transitions, 6643 flow [2024-06-28 02:02:35,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:02:35,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:02:35,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-06-28 02:02:35,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 02:02:35,495 INFO L175 Difference]: Start difference. First operand has 271 places, 410 transitions, 5513 flow. Second operand 8 states and 168 transitions. [2024-06-28 02:02:35,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 447 transitions, 6643 flow [2024-06-28 02:02:36,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 447 transitions, 6540 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 02:02:36,342 INFO L231 Difference]: Finished difference. Result has 274 places, 415 transitions, 5582 flow [2024-06-28 02:02:36,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5410, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5582, PETRI_PLACES=274, PETRI_TRANSITIONS=415} [2024-06-28 02:02:36,343 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 220 predicate places. [2024-06-28 02:02:36,343 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 415 transitions, 5582 flow [2024-06-28 02:02:36,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:02:36,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:36,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:36,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:02:36,343 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:36,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:36,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1863767198, now seen corresponding path program 5 times [2024-06-28 02:02:36,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:36,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735659055] [2024-06-28 02:02:36,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:36,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:38,770 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 02:02:38,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:38,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735659055] [2024-06-28 02:02:38,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735659055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:38,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:38,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:02:38,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72565876] [2024-06-28 02:02:38,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:38,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:02:38,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:38,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:02:38,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:02:38,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:02:38,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 415 transitions, 5582 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:02:38,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:38,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:02:38,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:41,994 INFO L124 PetriNetUnfolderBase]: 6568/10224 cut-off events. [2024-06-28 02:02:41,995 INFO L125 PetriNetUnfolderBase]: For 423141/423159 co-relation queries the response was YES. [2024-06-28 02:02:42,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77911 conditions, 10224 events. 6568/10224 cut-off events. For 423141/423159 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 63101 event pairs, 1596 based on Foata normal form. 18/10034 useless extension candidates. Maximal degree in co-relation 77773. Up to 9356 conditions per place. [2024-06-28 02:02:42,115 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 409 selfloop transitions, 49 changer transitions 0/465 dead transitions. [2024-06-28 02:02:42,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 465 transitions, 6956 flow [2024-06-28 02:02:42,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:02:42,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:02:42,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-06-28 02:02:42,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-28 02:02:42,117 INFO L175 Difference]: Start difference. First operand has 274 places, 415 transitions, 5582 flow. Second operand 8 states and 172 transitions. [2024-06-28 02:02:42,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 465 transitions, 6956 flow [2024-06-28 02:02:42,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 465 transitions, 6841 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-28 02:02:42,946 INFO L231 Difference]: Finished difference. Result has 282 places, 434 transitions, 5965 flow [2024-06-28 02:02:42,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5467, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5965, PETRI_PLACES=282, PETRI_TRANSITIONS=434} [2024-06-28 02:02:42,946 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 228 predicate places. [2024-06-28 02:02:42,946 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 434 transitions, 5965 flow [2024-06-28 02:02:42,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:02:42,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:42,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:42,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:02:42,947 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:42,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:42,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1863761618, now seen corresponding path program 6 times [2024-06-28 02:02:42,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:42,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719913637] [2024-06-28 02:02:42,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:42,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:45,425 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 02:02:45,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:45,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719913637] [2024-06-28 02:02:45,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719913637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:45,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:45,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:02:45,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115371306] [2024-06-28 02:02:45,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:45,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:02:45,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:45,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:02:45,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:02:45,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:02:45,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 434 transitions, 5965 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:02:45,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:45,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:02:45,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:48,426 INFO L124 PetriNetUnfolderBase]: 6619/10293 cut-off events. [2024-06-28 02:02:48,426 INFO L125 PetriNetUnfolderBase]: For 441155/441173 co-relation queries the response was YES. [2024-06-28 02:02:48,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79899 conditions, 10293 events. 6619/10293 cut-off events. For 441155/441173 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 63479 event pairs, 1596 based on Foata normal form. 18/10103 useless extension candidates. Maximal degree in co-relation 79757. Up to 9402 conditions per place. [2024-06-28 02:02:48,577 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 427 selfloop transitions, 46 changer transitions 0/480 dead transitions. [2024-06-28 02:02:48,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 480 transitions, 7402 flow [2024-06-28 02:02:48,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:02:48,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:02:48,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2024-06-28 02:02:48,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4505208333333333 [2024-06-28 02:02:48,579 INFO L175 Difference]: Start difference. First operand has 282 places, 434 transitions, 5965 flow. Second operand 8 states and 173 transitions. [2024-06-28 02:02:48,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 480 transitions, 7402 flow [2024-06-28 02:02:49,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 480 transitions, 7176 flow, removed 108 selfloop flow, removed 2 redundant places. [2024-06-28 02:02:49,933 INFO L231 Difference]: Finished difference. Result has 289 places, 443 transitions, 6080 flow [2024-06-28 02:02:49,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5803, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6080, PETRI_PLACES=289, PETRI_TRANSITIONS=443} [2024-06-28 02:02:49,934 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 235 predicate places. [2024-06-28 02:02:49,934 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 443 transitions, 6080 flow [2024-06-28 02:02:49,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:02:49,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:49,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:49,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:02:49,935 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:49,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:49,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1863761463, now seen corresponding path program 4 times [2024-06-28 02:02:49,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:49,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440958769] [2024-06-28 02:02:49,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:49,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:52,954 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 02:02:52,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:52,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440958769] [2024-06-28 02:02:52,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440958769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:52,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:52,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:02:52,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319487423] [2024-06-28 02:02:52,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:52,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:02:52,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:52,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:02:52,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:02:52,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:02:52,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 443 transitions, 6080 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 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 02:02:52,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:52,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:02:52,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:55,890 INFO L124 PetriNetUnfolderBase]: 6327/10007 cut-off events. [2024-06-28 02:02:55,890 INFO L125 PetriNetUnfolderBase]: For 438823/438881 co-relation queries the response was YES. [2024-06-28 02:02:55,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77887 conditions, 10007 events. 6327/10007 cut-off events. For 438823/438881 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 62739 event pairs, 1575 based on Foata normal form. 43/9831 useless extension candidates. Maximal degree in co-relation 77742. Up to 8869 conditions per place. [2024-06-28 02:02:56,039 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 393 selfloop transitions, 47 changer transitions 0/483 dead transitions. [2024-06-28 02:02:56,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 483 transitions, 7282 flow [2024-06-28 02:02:56,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:02:56,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:02:56,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-06-28 02:02:56,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557291666666667 [2024-06-28 02:02:56,040 INFO L175 Difference]: Start difference. First operand has 289 places, 443 transitions, 6080 flow. Second operand 8 states and 175 transitions. [2024-06-28 02:02:56,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 483 transitions, 7282 flow [2024-06-28 02:02:57,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 483 transitions, 7192 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-28 02:02:57,190 INFO L231 Difference]: Finished difference. Result has 294 places, 447 transitions, 6212 flow [2024-06-28 02:02:57,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5990, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6212, PETRI_PLACES=294, PETRI_TRANSITIONS=447} [2024-06-28 02:02:57,191 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 240 predicate places. [2024-06-28 02:02:57,191 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 447 transitions, 6212 flow [2024-06-28 02:02:57,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 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 02:02:57,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:57,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:57,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:02:57,192 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:57,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:57,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1107425896, now seen corresponding path program 1 times [2024-06-28 02:02:57,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:57,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834748086] [2024-06-28 02:02:57,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:57,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:59,485 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 02:02:59,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:59,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834748086] [2024-06-28 02:02:59,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834748086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:59,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:59,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:02:59,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243236159] [2024-06-28 02:02:59,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:59,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:02:59,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:59,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:02:59,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:02:59,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:02:59,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 447 transitions, 6212 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:02:59,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:59,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:02:59,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:02,436 INFO L124 PetriNetUnfolderBase]: 6667/10361 cut-off events. [2024-06-28 02:03:02,436 INFO L125 PetriNetUnfolderBase]: For 460679/460690 co-relation queries the response was YES. [2024-06-28 02:03:02,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82153 conditions, 10361 events. 6667/10361 cut-off events. For 460679/460690 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 63591 event pairs, 1257 based on Foata normal form. 4/10150 useless extension candidates. Maximal degree in co-relation 82006. Up to 9306 conditions per place. [2024-06-28 02:03:02,887 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 442 selfloop transitions, 39 changer transitions 0/488 dead transitions. [2024-06-28 02:03:02,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 488 transitions, 7750 flow [2024-06-28 02:03:02,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:03:02,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:03:02,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-28 02:03:02,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-28 02:03:02,889 INFO L175 Difference]: Start difference. First operand has 294 places, 447 transitions, 6212 flow. Second operand 6 states and 141 transitions. [2024-06-28 02:03:02,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 488 transitions, 7750 flow [2024-06-28 02:03:03,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 488 transitions, 7565 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-28 02:03:03,974 INFO L231 Difference]: Finished difference. Result has 296 places, 452 transitions, 6257 flow [2024-06-28 02:03:03,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6027, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6257, PETRI_PLACES=296, PETRI_TRANSITIONS=452} [2024-06-28 02:03:03,975 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 242 predicate places. [2024-06-28 02:03:03,975 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 452 transitions, 6257 flow [2024-06-28 02:03:03,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:03:03,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:03,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:03,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:03:03,976 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:03,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:03,976 INFO L85 PathProgramCache]: Analyzing trace with hash -176549784, now seen corresponding path program 2 times [2024-06-28 02:03:03,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:03,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878761180] [2024-06-28 02:03:03,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:03,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:06,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:03:06,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:06,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878761180] [2024-06-28 02:03:06,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878761180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:06,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:06,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:03:06,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854173962] [2024-06-28 02:03:06,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:06,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:03:06,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:06,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:03:06,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:03:06,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:03:06,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 452 transitions, 6257 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:03:06,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:06,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:03:06,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:09,377 INFO L124 PetriNetUnfolderBase]: 6662/10366 cut-off events. [2024-06-28 02:03:09,377 INFO L125 PetriNetUnfolderBase]: For 466575/466586 co-relation queries the response was YES. [2024-06-28 02:03:09,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82285 conditions, 10366 events. 6662/10366 cut-off events. For 466575/466586 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 63886 event pairs, 1586 based on Foata normal form. 4/10151 useless extension candidates. Maximal degree in co-relation 82136. Up to 9424 conditions per place. [2024-06-28 02:03:09,525 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 430 selfloop transitions, 44 changer transitions 0/481 dead transitions. [2024-06-28 02:03:09,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 481 transitions, 7460 flow [2024-06-28 02:03:09,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:03:09,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:03:09,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-28 02:03:09,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 02:03:09,527 INFO L175 Difference]: Start difference. First operand has 296 places, 452 transitions, 6257 flow. Second operand 6 states and 136 transitions. [2024-06-28 02:03:09,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 481 transitions, 7460 flow [2024-06-28 02:03:10,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 481 transitions, 7373 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-06-28 02:03:10,702 INFO L231 Difference]: Finished difference. Result has 300 places, 453 transitions, 6282 flow [2024-06-28 02:03:10,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6178, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6282, PETRI_PLACES=300, PETRI_TRANSITIONS=453} [2024-06-28 02:03:10,703 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 246 predicate places. [2024-06-28 02:03:10,703 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 453 transitions, 6282 flow [2024-06-28 02:03:10,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:03:10,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:10,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:10,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:03:10,704 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:10,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:10,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1270882458, now seen corresponding path program 1 times [2024-06-28 02:03:10,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:10,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389295509] [2024-06-28 02:03:10,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:10,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:13,045 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 02:03:13,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:13,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389295509] [2024-06-28 02:03:13,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389295509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:13,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:13,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:03:13,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262770950] [2024-06-28 02:03:13,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:13,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:03:13,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:13,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:03:13,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:03:13,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:03:13,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 453 transitions, 6282 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:03:13,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:13,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:03:13,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:16,351 INFO L124 PetriNetUnfolderBase]: 6716/10448 cut-off events. [2024-06-28 02:03:16,351 INFO L125 PetriNetUnfolderBase]: For 476663/476674 co-relation queries the response was YES. [2024-06-28 02:03:16,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83181 conditions, 10448 events. 6716/10448 cut-off events. For 476663/476674 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 64685 event pairs, 1587 based on Foata normal form. 3/10229 useless extension candidates. Maximal degree in co-relation 83030. Up to 9298 conditions per place. [2024-06-28 02:03:16,501 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 406 selfloop transitions, 81 changer transitions 0/494 dead transitions. [2024-06-28 02:03:16,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 494 transitions, 7890 flow [2024-06-28 02:03:16,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:03:16,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:03:16,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 02:03:16,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-28 02:03:16,503 INFO L175 Difference]: Start difference. First operand has 300 places, 453 transitions, 6282 flow. Second operand 6 states and 145 transitions. [2024-06-28 02:03:16,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 494 transitions, 7890 flow [2024-06-28 02:03:17,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 494 transitions, 7805 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 02:03:17,669 INFO L231 Difference]: Finished difference. Result has 303 places, 460 transitions, 6631 flow [2024-06-28 02:03:17,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6197, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6631, PETRI_PLACES=303, PETRI_TRANSITIONS=460} [2024-06-28 02:03:17,670 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 249 predicate places. [2024-06-28 02:03:17,670 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 460 transitions, 6631 flow [2024-06-28 02:03:17,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:03:17,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:17,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:17,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:03:17,670 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:17,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:17,671 INFO L85 PathProgramCache]: Analyzing trace with hash 374270490, now seen corresponding path program 2 times [2024-06-28 02:03:17,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:17,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019597620] [2024-06-28 02:03:17,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:17,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:20,369 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 02:03:20,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:20,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019597620] [2024-06-28 02:03:20,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019597620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:20,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:20,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:03:20,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505165960] [2024-06-28 02:03:20,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:20,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:03:20,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:20,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:03:20,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:03:20,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:03:20,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 460 transitions, 6631 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:03:20,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:20,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:03:20,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:23,830 INFO L124 PetriNetUnfolderBase]: 6713/10462 cut-off events. [2024-06-28 02:03:23,830 INFO L125 PetriNetUnfolderBase]: For 490193/490204 co-relation queries the response was YES. [2024-06-28 02:03:23,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84432 conditions, 10462 events. 6713/10462 cut-off events. For 490193/490204 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 64909 event pairs, 1579 based on Foata normal form. 3/10237 useless extension candidates. Maximal degree in co-relation 84279. Up to 9295 conditions per place. [2024-06-28 02:03:23,991 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 403 selfloop transitions, 95 changer transitions 0/505 dead transitions. [2024-06-28 02:03:23,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 505 transitions, 8033 flow [2024-06-28 02:03:23,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:03:23,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:03:23,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 02:03:23,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-06-28 02:03:23,992 INFO L175 Difference]: Start difference. First operand has 303 places, 460 transitions, 6631 flow. Second operand 8 states and 186 transitions. [2024-06-28 02:03:23,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 505 transitions, 8033 flow [2024-06-28 02:03:25,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 505 transitions, 7922 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-28 02:03:25,607 INFO L231 Difference]: Finished difference. Result has 308 places, 462 transitions, 6776 flow [2024-06-28 02:03:25,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6530, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6776, PETRI_PLACES=308, PETRI_TRANSITIONS=462} [2024-06-28 02:03:25,608 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 254 predicate places. [2024-06-28 02:03:25,608 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 462 transitions, 6776 flow [2024-06-28 02:03:25,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:03:25,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:25,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:25,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:03:25,609 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:25,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:25,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1225577002, now seen corresponding path program 3 times [2024-06-28 02:03:25,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:25,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375551086] [2024-06-28 02:03:25,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:25,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:28,011 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 02:03:28,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:28,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375551086] [2024-06-28 02:03:28,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375551086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:28,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:28,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:03:28,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875517942] [2024-06-28 02:03:28,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:28,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:03:28,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:28,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:03:28,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:03:28,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:03:28,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 462 transitions, 6776 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:03:28,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:28,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:03:28,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:31,337 INFO L124 PetriNetUnfolderBase]: 6736/10471 cut-off events. [2024-06-28 02:03:31,337 INFO L125 PetriNetUnfolderBase]: For 491166/491177 co-relation queries the response was YES. [2024-06-28 02:03:31,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84971 conditions, 10471 events. 6736/10471 cut-off events. For 491166/491177 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 64727 event pairs, 1585 based on Foata normal form. 3/10255 useless extension candidates. Maximal degree in co-relation 84817. Up to 9264 conditions per place. [2024-06-28 02:03:31,503 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 421 selfloop transitions, 86 changer transitions 0/514 dead transitions. [2024-06-28 02:03:31,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 514 transitions, 8550 flow [2024-06-28 02:03:31,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:03:31,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:03:31,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 02:03:31,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:03:31,505 INFO L175 Difference]: Start difference. First operand has 308 places, 462 transitions, 6776 flow. Second operand 7 states and 168 transitions. [2024-06-28 02:03:31,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 514 transitions, 8550 flow [2024-06-28 02:03:32,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 514 transitions, 8290 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 02:03:32,947 INFO L231 Difference]: Finished difference. Result has 309 places, 469 transitions, 6919 flow [2024-06-28 02:03:32,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6518, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6919, PETRI_PLACES=309, PETRI_TRANSITIONS=469} [2024-06-28 02:03:32,948 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 255 predicate places. [2024-06-28 02:03:32,948 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 469 transitions, 6919 flow [2024-06-28 02:03:32,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:03:32,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:32,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:32,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:03:32,949 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:32,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:32,949 INFO L85 PathProgramCache]: Analyzing trace with hash 658918133, now seen corresponding path program 1 times [2024-06-28 02:03:32,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:32,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456395243] [2024-06-28 02:03:32,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:32,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:35,410 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 02:03:35,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:35,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456395243] [2024-06-28 02:03:35,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456395243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:35,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:35,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:03:35,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747593507] [2024-06-28 02:03:35,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:35,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:03:35,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:35,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:03:35,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:03:35,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:03:35,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 469 transitions, 6919 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:03:35,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:35,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:03:35,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:39,070 INFO L124 PetriNetUnfolderBase]: 6834/10668 cut-off events. [2024-06-28 02:03:39,070 INFO L125 PetriNetUnfolderBase]: For 509801/509826 co-relation queries the response was YES. [2024-06-28 02:03:39,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87225 conditions, 10668 events. 6834/10668 cut-off events. For 509801/509826 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 66684 event pairs, 1570 based on Foata normal form. 22/10456 useless extension candidates. Maximal degree in co-relation 87070. Up to 9403 conditions per place. [2024-06-28 02:03:39,224 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 431 selfloop transitions, 99 changer transitions 0/537 dead transitions. [2024-06-28 02:03:39,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 537 transitions, 8870 flow [2024-06-28 02:03:39,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:03:39,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:03:39,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-28 02:03:39,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-28 02:03:39,226 INFO L175 Difference]: Start difference. First operand has 309 places, 469 transitions, 6919 flow. Second operand 9 states and 208 transitions. [2024-06-28 02:03:39,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 537 transitions, 8870 flow [2024-06-28 02:03:40,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 537 transitions, 8648 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-28 02:03:40,588 INFO L231 Difference]: Finished difference. Result has 315 places, 478 transitions, 7107 flow [2024-06-28 02:03:40,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6701, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7107, PETRI_PLACES=315, PETRI_TRANSITIONS=478} [2024-06-28 02:03:40,589 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 261 predicate places. [2024-06-28 02:03:40,589 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 478 transitions, 7107 flow [2024-06-28 02:03:40,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:03:40,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:40,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:40,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:03:40,590 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:40,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:40,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1794485884, now seen corresponding path program 4 times [2024-06-28 02:03:40,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:40,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809639068] [2024-06-28 02:03:40,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:40,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:43,043 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 02:03:43,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:43,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809639068] [2024-06-28 02:03:43,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809639068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:43,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:43,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:03:43,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289824577] [2024-06-28 02:03:43,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:43,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:03:43,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:43,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:03:43,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:03:43,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:03:43,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 478 transitions, 7107 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:03:43,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:43,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:03:43,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:46,763 INFO L124 PetriNetUnfolderBase]: 6857/10671 cut-off events. [2024-06-28 02:03:46,763 INFO L125 PetriNetUnfolderBase]: For 513332/513343 co-relation queries the response was YES. [2024-06-28 02:03:46,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87641 conditions, 10671 events. 6857/10671 cut-off events. For 513332/513343 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 66301 event pairs, 1604 based on Foata normal form. 3/10446 useless extension candidates. Maximal degree in co-relation 87484. Up to 9420 conditions per place. [2024-06-28 02:03:46,936 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 421 selfloop transitions, 94 changer transitions 0/522 dead transitions. [2024-06-28 02:03:46,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 522 transitions, 8744 flow [2024-06-28 02:03:46,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:03:46,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:03:46,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 02:03:46,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2024-06-28 02:03:46,938 INFO L175 Difference]: Start difference. First operand has 315 places, 478 transitions, 7107 flow. Second operand 7 states and 165 transitions. [2024-06-28 02:03:46,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 522 transitions, 8744 flow [2024-06-28 02:03:48,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 522 transitions, 8596 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-28 02:03:48,364 INFO L231 Difference]: Finished difference. Result has 317 places, 481 transitions, 7209 flow [2024-06-28 02:03:48,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6961, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7209, PETRI_PLACES=317, PETRI_TRANSITIONS=481} [2024-06-28 02:03:48,365 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 263 predicate places. [2024-06-28 02:03:48,365 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 481 transitions, 7209 flow [2024-06-28 02:03:48,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:03:48,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:48,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:48,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 02:03:48,365 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:48,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:48,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1359419979, now seen corresponding path program 2 times [2024-06-28 02:03:48,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:48,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814416422] [2024-06-28 02:03:48,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:48,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:50,844 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 02:03:50,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:50,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814416422] [2024-06-28 02:03:50,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814416422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:50,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:50,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:03:50,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456981400] [2024-06-28 02:03:50,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:50,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:03:50,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:50,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:03:50,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:03:50,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:03:50,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 481 transitions, 7209 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:03:50,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:50,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:03:50,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:54,566 INFO L124 PetriNetUnfolderBase]: 6903/10758 cut-off events. [2024-06-28 02:03:54,566 INFO L125 PetriNetUnfolderBase]: For 518295/518362 co-relation queries the response was YES. [2024-06-28 02:03:54,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88207 conditions, 10758 events. 6903/10758 cut-off events. For 518295/518362 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 67083 event pairs, 1572 based on Foata normal form. 51/10580 useless extension candidates. Maximal degree in co-relation 88049. Up to 9474 conditions per place. [2024-06-28 02:03:54,718 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 418 selfloop transitions, 98 changer transitions 0/523 dead transitions. [2024-06-28 02:03:54,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 523 transitions, 8757 flow [2024-06-28 02:03:54,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:03:54,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:03:54,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-28 02:03:54,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-28 02:03:54,719 INFO L175 Difference]: Start difference. First operand has 317 places, 481 transitions, 7209 flow. Second operand 7 states and 162 transitions. [2024-06-28 02:03:54,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 523 transitions, 8757 flow [2024-06-28 02:03:56,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 523 transitions, 8624 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 02:03:56,018 INFO L231 Difference]: Finished difference. Result has 320 places, 484 transitions, 7345 flow [2024-06-28 02:03:56,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7076, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7345, PETRI_PLACES=320, PETRI_TRANSITIONS=484} [2024-06-28 02:03:56,018 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 266 predicate places. [2024-06-28 02:03:56,018 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 484 transitions, 7345 flow [2024-06-28 02:03:56,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:03:56,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:56,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:56,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 02:03:56,019 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:56,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:56,019 INFO L85 PathProgramCache]: Analyzing trace with hash 2001139727, now seen corresponding path program 3 times [2024-06-28 02:03:56,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:56,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022054050] [2024-06-28 02:03:56,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:56,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:58,678 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 02:03:58,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:58,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022054050] [2024-06-28 02:03:58,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022054050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:58,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:58,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:03:58,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039456212] [2024-06-28 02:03:58,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:58,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:03:58,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:58,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:03:58,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:03:58,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:03:58,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 484 transitions, 7345 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:03:58,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:58,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:03:58,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:02,686 INFO L124 PetriNetUnfolderBase]: 6897/10750 cut-off events. [2024-06-28 02:04:02,686 INFO L125 PetriNetUnfolderBase]: For 523816/523883 co-relation queries the response was YES. [2024-06-28 02:04:02,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88333 conditions, 10750 events. 6897/10750 cut-off events. For 523816/523883 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 66994 event pairs, 1569 based on Foata normal form. 51/10572 useless extension candidates. Maximal degree in co-relation 88174. Up to 9469 conditions per place. [2024-06-28 02:04:02,857 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 427 selfloop transitions, 102 changer transitions 0/536 dead transitions. [2024-06-28 02:04:02,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 536 transitions, 8925 flow [2024-06-28 02:04:02,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:04:02,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:04:02,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 204 transitions. [2024-06-28 02:04:02,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 02:04:02,858 INFO L175 Difference]: Start difference. First operand has 320 places, 484 transitions, 7345 flow. Second operand 9 states and 204 transitions. [2024-06-28 02:04:02,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 536 transitions, 8925 flow [2024-06-28 02:04:04,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 536 transitions, 8767 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-28 02:04:04,386 INFO L231 Difference]: Finished difference. Result has 325 places, 484 transitions, 7408 flow [2024-06-28 02:04:04,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7187, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7408, PETRI_PLACES=325, PETRI_TRANSITIONS=484} [2024-06-28 02:04:04,386 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 271 predicate places. [2024-06-28 02:04:04,387 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 484 transitions, 7408 flow [2024-06-28 02:04:04,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:04:04,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:04,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:04,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 02:04:04,387 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:04,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:04,388 INFO L85 PathProgramCache]: Analyzing trace with hash -159066608, now seen corresponding path program 5 times [2024-06-28 02:04:04,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:04,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822953597] [2024-06-28 02:04:04,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:04,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:06,989 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 02:04:06,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:06,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822953597] [2024-06-28 02:04:06,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822953597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:06,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:06,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:06,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400691038] [2024-06-28 02:04:06,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:06,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:06,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:06,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:06,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:07,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:04:07,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 484 transitions, 7408 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:04:07,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:07,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:04:07,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:10,607 INFO L124 PetriNetUnfolderBase]: 6894/10727 cut-off events. [2024-06-28 02:04:10,607 INFO L125 PetriNetUnfolderBase]: For 523285/523338 co-relation queries the response was YES. [2024-06-28 02:04:10,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88183 conditions, 10727 events. 6894/10727 cut-off events. For 523285/523338 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 66685 event pairs, 1633 based on Foata normal form. 32/10529 useless extension candidates. Maximal degree in co-relation 88023. Up to 9471 conditions per place. [2024-06-28 02:04:10,757 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 417 selfloop transitions, 96 changer transitions 0/520 dead transitions. [2024-06-28 02:04:10,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 520 transitions, 8808 flow [2024-06-28 02:04:10,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:04:10,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:04:10,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 02:04:10,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-28 02:04:10,759 INFO L175 Difference]: Start difference. First operand has 325 places, 484 transitions, 7408 flow. Second operand 7 states and 160 transitions. [2024-06-28 02:04:10,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 520 transitions, 8808 flow [2024-06-28 02:04:12,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 520 transitions, 8516 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-28 02:04:12,220 INFO L231 Difference]: Finished difference. Result has 322 places, 486 transitions, 7353 flow [2024-06-28 02:04:12,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7120, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7353, PETRI_PLACES=322, PETRI_TRANSITIONS=486} [2024-06-28 02:04:12,221 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 268 predicate places. [2024-06-28 02:04:12,221 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 486 transitions, 7353 flow [2024-06-28 02:04:12,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:04:12,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:12,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:12,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 02:04:12,221 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:12,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:12,222 INFO L85 PathProgramCache]: Analyzing trace with hash 2001416557, now seen corresponding path program 1 times [2024-06-28 02:04:12,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:12,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021401831] [2024-06-28 02:04:12,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:12,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:15,484 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 02:04:15,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:15,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021401831] [2024-06-28 02:04:15,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021401831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:15,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:15,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:04:15,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774225973] [2024-06-28 02:04:15,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:15,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:04:15,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:15,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:04:15,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:04:15,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:04:15,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 486 transitions, 7353 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 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 02:04:15,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:15,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:04:15,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:18,829 INFO L124 PetriNetUnfolderBase]: 6795/10647 cut-off events. [2024-06-28 02:04:18,829 INFO L125 PetriNetUnfolderBase]: For 534421/534558 co-relation queries the response was YES. [2024-06-28 02:04:18,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86829 conditions, 10647 events. 6795/10647 cut-off events. For 534421/534558 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 67282 event pairs, 1560 based on Foata normal form. 68/10443 useless extension candidates. Maximal degree in co-relation 86669. Up to 9126 conditions per place. [2024-06-28 02:04:19,005 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 429 selfloop transitions, 58 changer transitions 0/528 dead transitions. [2024-06-28 02:04:19,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 528 transitions, 8760 flow [2024-06-28 02:04:19,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:04:19,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:04:19,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 02:04:19,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-06-28 02:04:19,007 INFO L175 Difference]: Start difference. First operand has 322 places, 486 transitions, 7353 flow. Second operand 7 states and 166 transitions. [2024-06-28 02:04:19,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 528 transitions, 8760 flow [2024-06-28 02:04:20,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 528 transitions, 8588 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 02:04:20,598 INFO L231 Difference]: Finished difference. Result has 325 places, 487 transitions, 7325 flow [2024-06-28 02:04:20,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7181, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7325, PETRI_PLACES=325, PETRI_TRANSITIONS=487} [2024-06-28 02:04:20,599 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 271 predicate places. [2024-06-28 02:04:20,599 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 487 transitions, 7325 flow [2024-06-28 02:04:20,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 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 02:04:20,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:20,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:20,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 02:04:20,600 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:20,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:20,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1701123513, now seen corresponding path program 4 times [2024-06-28 02:04:20,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:20,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716144966] [2024-06-28 02:04:20,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:20,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:22,979 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 02:04:22,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:22,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716144966] [2024-06-28 02:04:22,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716144966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:22,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:22,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:22,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024545181] [2024-06-28 02:04:22,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:22,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:22,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:22,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:22,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:23,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:04:23,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 487 transitions, 7325 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:04:23,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:23,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:04:23,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:26,830 INFO L124 PetriNetUnfolderBase]: 7152/11152 cut-off events. [2024-06-28 02:04:26,830 INFO L125 PetriNetUnfolderBase]: For 541946/541971 co-relation queries the response was YES. [2024-06-28 02:04:26,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91393 conditions, 11152 events. 7152/11152 cut-off events. For 541946/541971 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 70082 event pairs, 1634 based on Foata normal form. 22/10933 useless extension candidates. Maximal degree in co-relation 91231. Up to 9686 conditions per place. [2024-06-28 02:04:26,990 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 450 selfloop transitions, 94 changer transitions 0/551 dead transitions. [2024-06-28 02:04:26,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 551 transitions, 9280 flow [2024-06-28 02:04:26,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:04:26,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:04:26,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 02:04:26,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-06-28 02:04:26,991 INFO L175 Difference]: Start difference. First operand has 325 places, 487 transitions, 7325 flow. Second operand 8 states and 189 transitions. [2024-06-28 02:04:26,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 551 transitions, 9280 flow [2024-06-28 02:04:28,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 551 transitions, 9170 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 02:04:28,473 INFO L231 Difference]: Finished difference. Result has 329 places, 496 transitions, 7626 flow [2024-06-28 02:04:28,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7215, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7626, PETRI_PLACES=329, PETRI_TRANSITIONS=496} [2024-06-28 02:04:28,474 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 275 predicate places. [2024-06-28 02:04:28,474 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 496 transitions, 7626 flow [2024-06-28 02:04:28,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:04:28,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:28,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:28,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 02:04:28,475 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:28,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:28,475 INFO L85 PathProgramCache]: Analyzing trace with hash 28652363, now seen corresponding path program 5 times [2024-06-28 02:04:28,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:28,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354648001] [2024-06-28 02:04:28,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:28,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:31,057 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 02:04:31,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:31,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354648001] [2024-06-28 02:04:31,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354648001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:31,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:31,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:31,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786041761] [2024-06-28 02:04:31,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:31,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:31,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:31,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:31,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:31,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:04:31,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 496 transitions, 7626 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:04:31,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:31,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:04:31,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:34,856 INFO L124 PetriNetUnfolderBase]: 7198/11208 cut-off events. [2024-06-28 02:04:34,857 INFO L125 PetriNetUnfolderBase]: For 562623/562690 co-relation queries the response was YES. [2024-06-28 02:04:34,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93206 conditions, 11208 events. 7198/11208 cut-off events. For 562623/562690 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 70175 event pairs, 1621 based on Foata normal form. 51/11020 useless extension candidates. Maximal degree in co-relation 93042. Up to 9726 conditions per place. [2024-06-28 02:04:35,053 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 444 selfloop transitions, 97 changer transitions 0/548 dead transitions. [2024-06-28 02:04:35,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 548 transitions, 9392 flow [2024-06-28 02:04:35,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:04:35,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:04:35,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 02:04:35,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817708333333333 [2024-06-28 02:04:35,055 INFO L175 Difference]: Start difference. First operand has 329 places, 496 transitions, 7626 flow. Second operand 8 states and 185 transitions. [2024-06-28 02:04:35,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 548 transitions, 9392 flow [2024-06-28 02:04:36,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 548 transitions, 9301 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-28 02:04:36,814 INFO L231 Difference]: Finished difference. Result has 334 places, 499 transitions, 7811 flow [2024-06-28 02:04:36,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7537, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7811, PETRI_PLACES=334, PETRI_TRANSITIONS=499} [2024-06-28 02:04:36,815 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 280 predicate places. [2024-06-28 02:04:36,815 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 499 transitions, 7811 flow [2024-06-28 02:04:36,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:04:36,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:36,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:36,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 02:04:36,816 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:36,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:36,816 INFO L85 PathProgramCache]: Analyzing trace with hash 426911161, now seen corresponding path program 6 times [2024-06-28 02:04:36,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:36,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609380570] [2024-06-28 02:04:36,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:36,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:39,634 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 02:04:39,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:39,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609380570] [2024-06-28 02:04:39,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609380570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:39,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:39,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:39,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238667726] [2024-06-28 02:04:39,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:39,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:39,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:39,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:39,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:39,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:04:39,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 499 transitions, 7811 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:04:39,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:39,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:04:39,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:43,557 INFO L124 PetriNetUnfolderBase]: 7244/11288 cut-off events. [2024-06-28 02:04:43,557 INFO L125 PetriNetUnfolderBase]: For 569549/569616 co-relation queries the response was YES. [2024-06-28 02:04:43,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93728 conditions, 11288 events. 7244/11288 cut-off events. For 569549/569616 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 70946 event pairs, 1635 based on Foata normal form. 51/11094 useless extension candidates. Maximal degree in co-relation 93561. Up to 9766 conditions per place. [2024-06-28 02:04:43,722 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 433 selfloop transitions, 109 changer transitions 0/549 dead transitions. [2024-06-28 02:04:43,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 549 transitions, 9549 flow [2024-06-28 02:04:43,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:04:43,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:04:43,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-28 02:04:43,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765625 [2024-06-28 02:04:43,723 INFO L175 Difference]: Start difference. First operand has 334 places, 499 transitions, 7811 flow. Second operand 8 states and 183 transitions. [2024-06-28 02:04:43,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 549 transitions, 9549 flow [2024-06-28 02:04:45,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 549 transitions, 9321 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 02:04:45,380 INFO L231 Difference]: Finished difference. Result has 337 places, 502 transitions, 7885 flow [2024-06-28 02:04:45,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7593, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7885, PETRI_PLACES=337, PETRI_TRANSITIONS=502} [2024-06-28 02:04:45,380 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 283 predicate places. [2024-06-28 02:04:45,380 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 502 transitions, 7885 flow [2024-06-28 02:04:45,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:04:45,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:45,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:45,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 02:04:45,381 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:45,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:45,381 INFO L85 PathProgramCache]: Analyzing trace with hash 432625081, now seen corresponding path program 7 times [2024-06-28 02:04:45,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:45,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016713219] [2024-06-28 02:04:45,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:45,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:47,885 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 02:04:47,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:47,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016713219] [2024-06-28 02:04:47,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016713219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:47,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:47,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:47,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943431119] [2024-06-28 02:04:47,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:47,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:47,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:47,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:47,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:47,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:04:47,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 502 transitions, 7885 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:04:47,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:47,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:04:47,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:51,731 INFO L124 PetriNetUnfolderBase]: 7238/11280 cut-off events. [2024-06-28 02:04:51,731 INFO L125 PetriNetUnfolderBase]: For 570261/570328 co-relation queries the response was YES. [2024-06-28 02:04:51,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93407 conditions, 11280 events. 7238/11280 cut-off events. For 570261/570328 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 70884 event pairs, 1624 based on Foata normal form. 51/11086 useless extension candidates. Maximal degree in co-relation 93239. Up to 9761 conditions per place. [2024-06-28 02:04:51,912 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 437 selfloop transitions, 104 changer transitions 0/548 dead transitions. [2024-06-28 02:04:51,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 548 transitions, 9417 flow [2024-06-28 02:04:51,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:04:51,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:04:51,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-28 02:04:51,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4739583333333333 [2024-06-28 02:04:51,913 INFO L175 Difference]: Start difference. First operand has 337 places, 502 transitions, 7885 flow. Second operand 8 states and 182 transitions. [2024-06-28 02:04:51,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 548 transitions, 9417 flow [2024-06-28 02:04:53,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 548 transitions, 9083 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 02:04:53,623 INFO L231 Difference]: Finished difference. Result has 339 places, 502 transitions, 7767 flow [2024-06-28 02:04:53,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7551, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7767, PETRI_PLACES=339, PETRI_TRANSITIONS=502} [2024-06-28 02:04:53,623 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 285 predicate places. [2024-06-28 02:04:53,623 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 502 transitions, 7767 flow [2024-06-28 02:04:53,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 02:04:53,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:53,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:53,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 02:04:53,624 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:53,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:53,624 INFO L85 PathProgramCache]: Analyzing trace with hash 427353531, now seen corresponding path program 2 times [2024-06-28 02:04:53,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:53,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34762434] [2024-06-28 02:04:53,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:53,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:57,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:57,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:57,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34762434] [2024-06-28 02:04:57,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34762434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:57,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:57,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:04:57,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495480177] [2024-06-28 02:04:57,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:57,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:04:57,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:57,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:04:57,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:04:57,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:04:57,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 502 transitions, 7767 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 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 02:04:57,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:57,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:04:57,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:01,309 INFO L124 PetriNetUnfolderBase]: 7149/11215 cut-off events. [2024-06-28 02:05:01,310 INFO L125 PetriNetUnfolderBase]: For 590555/590657 co-relation queries the response was YES. [2024-06-28 02:05:01,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91660 conditions, 11215 events. 7149/11215 cut-off events. For 590555/590657 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 71600 event pairs, 1595 based on Foata normal form. 68/10985 useless extension candidates. Maximal degree in co-relation 91492. Up to 9566 conditions per place. [2024-06-28 02:05:01,493 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 445 selfloop transitions, 61 changer transitions 0/552 dead transitions. [2024-06-28 02:05:01,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 552 transitions, 9322 flow [2024-06-28 02:05:01,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:05:01,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:05:01,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 02:05:01,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4869791666666667 [2024-06-28 02:05:01,494 INFO L175 Difference]: Start difference. First operand has 339 places, 502 transitions, 7767 flow. Second operand 8 states and 187 transitions. [2024-06-28 02:05:01,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 552 transitions, 9322 flow [2024-06-28 02:05:03,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 552 transitions, 9132 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 02:05:03,460 INFO L231 Difference]: Finished difference. Result has 341 places, 503 transitions, 7725 flow [2024-06-28 02:05:03,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7577, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7725, PETRI_PLACES=341, PETRI_TRANSITIONS=503} [2024-06-28 02:05:03,460 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 287 predicate places. [2024-06-28 02:05:03,460 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 503 transitions, 7725 flow [2024-06-28 02:05:03,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 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 02:05:03,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:03,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:03,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 02:05:03,461 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:05:03,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:03,461 INFO L85 PathProgramCache]: Analyzing trace with hash 442158201, now seen corresponding path program 3 times [2024-06-28 02:05:03,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:03,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051278926] [2024-06-28 02:05:03,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:03,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:07,264 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 02:05:07,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:07,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051278926] [2024-06-28 02:05:07,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051278926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:07,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:07,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:05:07,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662149266] [2024-06-28 02:05:07,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:07,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:05:07,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:07,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:05:07,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:05:07,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:05:07,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 503 transitions, 7725 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 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 02:05:07,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:07,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:05:07,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:10,894 INFO L124 PetriNetUnfolderBase]: 7201/11270 cut-off events. [2024-06-28 02:05:10,894 INFO L125 PetriNetUnfolderBase]: For 587650/587736 co-relation queries the response was YES. [2024-06-28 02:05:11,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92222 conditions, 11270 events. 7201/11270 cut-off events. For 587650/587736 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 71690 event pairs, 1551 based on Foata normal form. 64/11056 useless extension candidates. Maximal degree in co-relation 92053. Up to 9273 conditions per place. [2024-06-28 02:05:11,077 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 447 selfloop transitions, 62 changer transitions 0/555 dead transitions. [2024-06-28 02:05:11,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 555 transitions, 9312 flow [2024-06-28 02:05:11,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:05:11,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:05:11,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 02:05:11,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-28 02:05:11,079 INFO L175 Difference]: Start difference. First operand has 341 places, 503 transitions, 7725 flow. Second operand 8 states and 188 transitions. [2024-06-28 02:05:11,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 555 transitions, 9312 flow [2024-06-28 02:05:12,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 555 transitions, 9188 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 02:05:12,950 INFO L231 Difference]: Finished difference. Result has 343 places, 504 transitions, 7751 flow [2024-06-28 02:05:12,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7601, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7751, PETRI_PLACES=343, PETRI_TRANSITIONS=504} [2024-06-28 02:05:12,950 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 289 predicate places. [2024-06-28 02:05:12,950 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 504 transitions, 7751 flow [2024-06-28 02:05:12,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 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 02:05:12,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:12,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:12,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 02:05:12,951 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:05:12,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:12,951 INFO L85 PathProgramCache]: Analyzing trace with hash 110680595, now seen corresponding path program 1 times [2024-06-28 02:05:12,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:12,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246138670] [2024-06-28 02:05:12,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:12,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:12,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:15,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:15,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:15,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246138670] [2024-06-28 02:05:15,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246138670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:15,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:15,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:05:15,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233780433] [2024-06-28 02:05:15,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:15,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:05:15,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:15,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:05:15,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:05:16,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:05:16,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 504 transitions, 7751 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 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 02:05:16,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:16,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:05:16,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:20,086 INFO L124 PetriNetUnfolderBase]: 7323/11607 cut-off events. [2024-06-28 02:05:20,086 INFO L125 PetriNetUnfolderBase]: For 615479/615505 co-relation queries the response was YES. [2024-06-28 02:05:20,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95600 conditions, 11607 events. 7323/11607 cut-off events. For 615479/615505 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 75040 event pairs, 1567 based on Foata normal form. 26/11350 useless extension candidates. Maximal degree in co-relation 95430. Up to 10040 conditions per place. [2024-06-28 02:05:20,257 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 489 selfloop transitions, 44 changer transitions 0/576 dead transitions. [2024-06-28 02:05:20,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 576 transitions, 9601 flow [2024-06-28 02:05:20,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:05:20,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:05:20,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-28 02:05:20,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976851851851852 [2024-06-28 02:05:20,258 INFO L175 Difference]: Start difference. First operand has 343 places, 504 transitions, 7751 flow. Second operand 9 states and 215 transitions. [2024-06-28 02:05:20,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 576 transitions, 9601 flow [2024-06-28 02:05:21,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 576 transitions, 9471 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:05:21,963 INFO L231 Difference]: Finished difference. Result has 348 places, 511 transitions, 7940 flow [2024-06-28 02:05:21,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7621, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7940, PETRI_PLACES=348, PETRI_TRANSITIONS=511} [2024-06-28 02:05:21,964 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 294 predicate places. [2024-06-28 02:05:21,964 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 511 transitions, 7940 flow [2024-06-28 02:05:21,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 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 02:05:21,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:21,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:21,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 02:05:21,965 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:05:21,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:21,965 INFO L85 PathProgramCache]: Analyzing trace with hash 110741169, now seen corresponding path program 1 times [2024-06-28 02:05:21,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:21,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465482227] [2024-06-28 02:05:21,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:21,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:26,017 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 02:05:26,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:26,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465482227] [2024-06-28 02:05:26,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465482227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:26,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:26,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:05:26,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292667240] [2024-06-28 02:05:26,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:26,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:05:26,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:26,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:05:26,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:05:26,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:05:26,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 511 transitions, 7940 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 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 02:05:26,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:26,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:05:26,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:29,756 INFO L124 PetriNetUnfolderBase]: 7724/12056 cut-off events. [2024-06-28 02:05:29,756 INFO L125 PetriNetUnfolderBase]: For 634549/634551 co-relation queries the response was YES. [2024-06-28 02:05:29,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99697 conditions, 12056 events. 7724/12056 cut-off events. For 634549/634551 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 76891 event pairs, 1808 based on Foata normal form. 2/11791 useless extension candidates. Maximal degree in co-relation 99524. Up to 10987 conditions per place. [2024-06-28 02:05:29,933 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 539 selfloop transitions, 34 changer transitions 0/580 dead transitions. [2024-06-28 02:05:29,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 580 transitions, 9715 flow [2024-06-28 02:05:29,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:05:29,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:05:29,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 203 transitions. [2024-06-28 02:05:29,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4699074074074074 [2024-06-28 02:05:29,935 INFO L175 Difference]: Start difference. First operand has 348 places, 511 transitions, 7940 flow. Second operand 9 states and 203 transitions. [2024-06-28 02:05:29,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 580 transitions, 9715 flow [2024-06-28 02:05:31,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 580 transitions, 9609 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-06-28 02:05:31,747 INFO L231 Difference]: Finished difference. Result has 355 places, 522 transitions, 8182 flow [2024-06-28 02:05:31,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7838, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8182, PETRI_PLACES=355, PETRI_TRANSITIONS=522} [2024-06-28 02:05:31,748 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 301 predicate places. [2024-06-28 02:05:31,748 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 522 transitions, 8182 flow [2024-06-28 02:05:31,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 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 02:05:31,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:31,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:31,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 02:05:31,749 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:05:31,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:31,749 INFO L85 PathProgramCache]: Analyzing trace with hash 110741045, now seen corresponding path program 2 times [2024-06-28 02:05:31,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:31,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201422058] [2024-06-28 02:05:31,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:31,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:34,914 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 02:05:34,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:34,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201422058] [2024-06-28 02:05:34,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201422058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:34,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:34,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:05:34,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089939029] [2024-06-28 02:05:34,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:34,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:05:34,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:34,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:05:34,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:05:34,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:05:34,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 522 transitions, 8182 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 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 02:05:34,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:34,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:05:34,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:38,912 INFO L124 PetriNetUnfolderBase]: 7448/11789 cut-off events. [2024-06-28 02:05:38,913 INFO L125 PetriNetUnfolderBase]: For 635357/635383 co-relation queries the response was YES. [2024-06-28 02:05:39,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98198 conditions, 11789 events. 7448/11789 cut-off events. For 635357/635383 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 76361 event pairs, 1694 based on Foata normal form. 26/11527 useless extension candidates. Maximal degree in co-relation 98021. Up to 10043 conditions per place. [2024-06-28 02:05:39,102 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 446 selfloop transitions, 114 changer transitions 0/606 dead transitions. [2024-06-28 02:05:39,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 606 transitions, 10455 flow [2024-06-28 02:05:39,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:05:39,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:05:39,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-28 02:05:39,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:05:39,103 INFO L175 Difference]: Start difference. First operand has 355 places, 522 transitions, 8182 flow. Second operand 9 states and 216 transitions. [2024-06-28 02:05:39,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 606 transitions, 10455 flow [2024-06-28 02:05:41,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 606 transitions, 10312 flow, removed 65 selfloop flow, removed 3 redundant places. [2024-06-28 02:05:41,557 INFO L231 Difference]: Finished difference. Result has 363 places, 540 transitions, 8875 flow [2024-06-28 02:05:41,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8043, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8875, PETRI_PLACES=363, PETRI_TRANSITIONS=540} [2024-06-28 02:05:41,557 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 309 predicate places. [2024-06-28 02:05:41,558 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 540 transitions, 8875 flow [2024-06-28 02:05:41,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 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 02:05:41,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:41,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:41,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 02:05:41,559 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:05:41,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:41,559 INFO L85 PathProgramCache]: Analyzing trace with hash 113542329, now seen corresponding path program 2 times [2024-06-28 02:05:41,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:41,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041379339] [2024-06-28 02:05:41,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:41,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:45,979 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 02:05:45,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:45,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041379339] [2024-06-28 02:05:45,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041379339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:45,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:45,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:05:45,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501832305] [2024-06-28 02:05:45,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:45,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:05:45,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:45,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:05:45,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:05:46,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:05:46,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 540 transitions, 8875 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 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 02:05:46,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:46,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:05:46,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:49,854 INFO L124 PetriNetUnfolderBase]: 7844/12231 cut-off events. [2024-06-28 02:05:49,855 INFO L125 PetriNetUnfolderBase]: For 664166/664168 co-relation queries the response was YES. [2024-06-28 02:05:50,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103627 conditions, 12231 events. 7844/12231 cut-off events. For 664166/664168 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 78162 event pairs, 1826 based on Foata normal form. 2/11963 useless extension candidates. Maximal degree in co-relation 103445. Up to 11189 conditions per place. [2024-06-28 02:05:50,097 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 568 selfloop transitions, 26 changer transitions 0/601 dead transitions. [2024-06-28 02:05:50,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 601 transitions, 10556 flow [2024-06-28 02:05:50,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:05:50,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:05:50,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 198 transitions. [2024-06-28 02:05:50,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 02:05:50,098 INFO L175 Difference]: Start difference. First operand has 363 places, 540 transitions, 8875 flow. Second operand 9 states and 198 transitions. [2024-06-28 02:05:50,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 601 transitions, 10556 flow [2024-06-28 02:05:52,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 601 transitions, 10350 flow, removed 71 selfloop flow, removed 3 redundant places. [2024-06-28 02:05:52,893 INFO L231 Difference]: Finished difference. Result has 371 places, 549 transitions, 8932 flow [2024-06-28 02:05:52,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8669, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8932, PETRI_PLACES=371, PETRI_TRANSITIONS=549} [2024-06-28 02:05:52,894 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 317 predicate places. [2024-06-28 02:05:52,894 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 549 transitions, 8932 flow [2024-06-28 02:05:52,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 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 02:05:52,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:52,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:52,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 02:05:52,894 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:05:52,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:52,895 INFO L85 PathProgramCache]: Analyzing trace with hash 113537555, now seen corresponding path program 3 times [2024-06-28 02:05:52,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:52,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527413128] [2024-06-28 02:05:52,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:52,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:56,684 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 02:05:56,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:56,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527413128] [2024-06-28 02:05:56,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527413128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:56,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:56,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:05:56,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331856796] [2024-06-28 02:05:56,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:56,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:05:56,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:56,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:05:56,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:05:56,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:05:56,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 549 transitions, 8932 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 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 02:05:56,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:56,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:05:56,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:00,502 INFO L124 PetriNetUnfolderBase]: 7554/11917 cut-off events. [2024-06-28 02:06:00,503 INFO L125 PetriNetUnfolderBase]: For 680524/680550 co-relation queries the response was YES. [2024-06-28 02:06:00,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102293 conditions, 11917 events. 7554/11917 cut-off events. For 680524/680550 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 77105 event pairs, 1727 based on Foata normal form. 26/11665 useless extension candidates. Maximal degree in co-relation 102107. Up to 10507 conditions per place. [2024-06-28 02:06:00,734 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 514 selfloop transitions, 42 changer transitions 0/605 dead transitions. [2024-06-28 02:06:00,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 605 transitions, 10474 flow [2024-06-28 02:06:00,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:06:00,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:06:00,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 204 transitions. [2024-06-28 02:06:00,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 02:06:00,735 INFO L175 Difference]: Start difference. First operand has 371 places, 549 transitions, 8932 flow. Second operand 9 states and 204 transitions. [2024-06-28 02:06:00,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 605 transitions, 10474 flow [2024-06-28 02:06:03,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 605 transitions, 10313 flow, removed 62 selfloop flow, removed 5 redundant places. [2024-06-28 02:06:03,949 INFO L231 Difference]: Finished difference. Result has 375 places, 551 transitions, 8922 flow [2024-06-28 02:06:03,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8771, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8922, PETRI_PLACES=375, PETRI_TRANSITIONS=551} [2024-06-28 02:06:03,949 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 321 predicate places. [2024-06-28 02:06:03,950 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 551 transitions, 8922 flow [2024-06-28 02:06:03,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 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 02:06:03,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:03,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:06:03,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 02:06:03,950 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:06:03,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:03,950 INFO L85 PathProgramCache]: Analyzing trace with hash 801280623, now seen corresponding path program 3 times [2024-06-28 02:06:03,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:03,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259951794] [2024-06-28 02:06:03,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:03,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:07,742 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 02:06:07,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:07,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259951794] [2024-06-28 02:06:07,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259951794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:07,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:07,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:06:07,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81866742] [2024-06-28 02:06:07,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:07,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:06:07,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:07,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:06:07,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:06:07,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:06:07,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 551 transitions, 8922 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 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 02:06:07,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:07,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:06:07,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:12,621 INFO L124 PetriNetUnfolderBase]: 7966/12398 cut-off events. [2024-06-28 02:06:12,621 INFO L125 PetriNetUnfolderBase]: For 700520/700522 co-relation queries the response was YES. [2024-06-28 02:06:12,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106757 conditions, 12398 events. 7966/12398 cut-off events. For 700520/700522 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 79184 event pairs, 1842 based on Foata normal form. 2/12131 useless extension candidates. Maximal degree in co-relation 106570. Up to 11295 conditions per place. [2024-06-28 02:06:12,810 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 573 selfloop transitions, 38 changer transitions 0/618 dead transitions. [2024-06-28 02:06:12,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 618 transitions, 10700 flow [2024-06-28 02:06:12,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:06:12,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:06:12,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 218 transitions. [2024-06-28 02:06:12,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45416666666666666 [2024-06-28 02:06:12,812 INFO L175 Difference]: Start difference. First operand has 375 places, 551 transitions, 8922 flow. Second operand 10 states and 218 transitions. [2024-06-28 02:06:12,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 618 transitions, 10700 flow [2024-06-28 02:06:15,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 618 transitions, 10560 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 02:06:15,157 INFO L231 Difference]: Finished difference. Result has 379 places, 559 transitions, 9026 flow [2024-06-28 02:06:15,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8785, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9026, PETRI_PLACES=379, PETRI_TRANSITIONS=559} [2024-06-28 02:06:15,158 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 325 predicate places. [2024-06-28 02:06:15,158 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 559 transitions, 9026 flow [2024-06-28 02:06:15,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 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 02:06:15,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:15,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:06:15,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 02:06:15,158 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:06:15,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:15,159 INFO L85 PathProgramCache]: Analyzing trace with hash 916576443, now seen corresponding path program 4 times [2024-06-28 02:06:15,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:15,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042229675] [2024-06-28 02:06:15,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:15,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:18,866 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 02:06:18,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:18,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042229675] [2024-06-28 02:06:18,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042229675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:18,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:18,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:06:18,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054521361] [2024-06-28 02:06:18,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:18,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:06:18,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:18,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:06:18,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:06:18,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:06:18,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 559 transitions, 9026 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 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 02:06:18,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:18,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:06:18,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:23,739 INFO L124 PetriNetUnfolderBase]: 8036/12529 cut-off events. [2024-06-28 02:06:23,739 INFO L125 PetriNetUnfolderBase]: For 720270/720272 co-relation queries the response was YES. [2024-06-28 02:06:23,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108704 conditions, 12529 events. 8036/12529 cut-off events. For 720270/720272 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 80254 event pairs, 1870 based on Foata normal form. 2/12250 useless extension candidates. Maximal degree in co-relation 108515. Up to 11223 conditions per place. [2024-06-28 02:06:24,132 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 541 selfloop transitions, 81 changer transitions 0/629 dead transitions. [2024-06-28 02:06:24,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 629 transitions, 11168 flow [2024-06-28 02:06:24,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:06:24,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:06:24,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-28 02:06:24,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-28 02:06:24,134 INFO L175 Difference]: Start difference. First operand has 379 places, 559 transitions, 9026 flow. Second operand 9 states and 208 transitions. [2024-06-28 02:06:24,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 629 transitions, 11168 flow [2024-06-28 02:06:26,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 629 transitions, 11067 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-28 02:06:26,430 INFO L231 Difference]: Finished difference. Result has 385 places, 569 transitions, 9445 flow [2024-06-28 02:06:26,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8925, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9445, PETRI_PLACES=385, PETRI_TRANSITIONS=569} [2024-06-28 02:06:26,431 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 331 predicate places. [2024-06-28 02:06:26,431 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 569 transitions, 9445 flow [2024-06-28 02:06:26,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 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 02:06:26,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:26,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:06:26,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 02:06:26,432 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:06:26,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:26,432 INFO L85 PathProgramCache]: Analyzing trace with hash 916571793, now seen corresponding path program 5 times [2024-06-28 02:06:26,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:26,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13765808] [2024-06-28 02:06:26,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:26,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:29,297 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 02:06:29,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:29,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13765808] [2024-06-28 02:06:29,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13765808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:29,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:29,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:06:29,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19250634] [2024-06-28 02:06:29,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:29,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:06:29,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:29,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:06:29,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:06:29,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:06:29,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 569 transitions, 9445 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 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 02:06:29,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:29,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:06:29,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand