./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/37_stack_lock_p0_vs_concur.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/37_stack_lock_p0_vs_concur.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fced0e87 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-ext/37_stack_lock_p0_vs_concur.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/37_stack_lock_p0_vs_concur.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.extract-columns-fced0e8-m [2024-01-31 16:02:01,493 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:02:01,546 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:02:01,550 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:02:01,551 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:02:01,571 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:02:01,572 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:02:01,572 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:02:01,574 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:02:01,575 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:02:01,575 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:02:01,576 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:02:01,577 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:02:01,579 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:02:01,580 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:02:01,580 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:02:01,580 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:02:01,581 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:02:01,581 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:02:01,581 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:02:01,582 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:02:01,582 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:02:01,582 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:02:01,583 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:02:01,583 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:02:01,583 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:02:01,583 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:02:01,584 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:02:01,584 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:02:01,584 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:02:01,585 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:02:01,585 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:02:01,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:02:01,586 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:02:01,586 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:02:01,586 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:02:01,586 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:02:01,586 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:02:01,587 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:02:01,587 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:02:01,587 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:02:01,587 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:02:01,587 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:02:01,588 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:02:01,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:02:01,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:02:01,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:02:01,812 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:02:01,812 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:02:01,813 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/37_stack_lock_p0_vs_concur.i [2024-01-31 16:02:02,892 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:02:03,113 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:02:03,113 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/37_stack_lock_p0_vs_concur.i [2024-01-31 16:02:03,123 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3afb98383/060c1ee26c0848aa812f3cf9ea34ff7e/FLAGe2b2ee1c6 [2024-01-31 16:02:03,148 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3afb98383/060c1ee26c0848aa812f3cf9ea34ff7e [2024-01-31 16:02:03,150 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:02:03,151 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:02:03,151 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/37_stack_lock_p0_vs_concur.yml/witness.yml [2024-01-31 16:02:03,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:02:03,329 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:02:03,330 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:02:03,330 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:02:03,334 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:02:03,335 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:02:03" (1/2) ... [2024-01-31 16:02:03,337 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fdaf94c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:02:03, skipping insertion in model container [2024-01-31 16:02:03,337 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:02:03" (1/2) ... [2024-01-31 16:02:03,339 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5996c4dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:02:03, skipping insertion in model container [2024-01-31 16:02:03,339 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:02:03" (2/2) ... [2024-01-31 16:02:03,339 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fdaf94c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:03, skipping insertion in model container [2024-01-31 16:02:03,340 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:02:03" (2/2) ... [2024-01-31 16:02:03,340 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:02:03,528 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:02:03,532 INFO L98 nessWitnessExtractor]: Location invariant before [L729-L729] (((((((0 <= m) && (1 <= next_alloc_idx)) && (next_alloc_idx <= 66)) && (m <= 1)) && (top == 0)) && (next_alloc_idx % 2 == 1)) && ((unsigned long )arg == 0UL)) && (m == 0 || m == 1) [2024-01-31 16:02:03,533 INFO L98 nessWitnessExtractor]: Location invariant before [L702-L702] (((((((0 <= m) && (0 <= top)) && (1 <= next_alloc_idx)) && (next_alloc_idx <= 66)) && (m <= 1)) && (top <= 64)) && (next_alloc_idx % 2 == 1)) && (m == 0 || m == 1) [2024-01-31 16:02:03,533 INFO L98 nessWitnessExtractor]: Location invariant after [L729-L729] (((((((0 <= m) && (1 <= next_alloc_idx)) && (next_alloc_idx <= 66)) && (m <= 1)) && (top == 0)) && (next_alloc_idx % 2 == 1)) && ((unsigned long )arg == 0UL)) && (m == 0 || m == 1) [2024-01-31 16:02:03,533 INFO L98 nessWitnessExtractor]: Location invariant before [L706-L706] (((((((((0 <= m) && (0 <= top)) && (65 <= next_alloc_idx)) && (next_alloc_idx <= 66)) && (m <= 1)) && (top <= 64)) && (*curr_alloc_idx == -1)) && (next_alloc_idx % 2 == 1)) && (next_alloc_idx != -1)) && (m == 0 || m == 1) [2024-01-31 16:02:03,533 INFO L98 nessWitnessExtractor]: Location invariant before [L701-L701] (((((((0 <= m) && (0 <= top)) && (1 <= next_alloc_idx)) && (next_alloc_idx <= 66)) && (m <= 1)) && (top <= 64)) && (next_alloc_idx % 2 == 1)) && (m == 0 || m == 1) [2024-01-31 16:02:03,534 INFO L98 nessWitnessExtractor]: Location invariant before [L729-L729] ((((((((0 <= m) && (0 <= top)) && (1 <= next_alloc_idx)) && (next_alloc_idx <= 66)) && (m <= 1)) && (top <= 64)) && (next_alloc_idx % 2 == 1)) && ((unsigned long )arg == 0UL)) && (m == 0 || m == 1) [2024-01-31 16:02:03,534 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] ((((((0 <= oldTop) && (1 <= newTop)) && (oldTop <= 64)) && (newTop <= 64)) && (10 == d)) && (d == 10)) && (newTop != 0) [2024-01-31 16:02:03,534 INFO L98 nessWitnessExtractor]: Loop invariant at [L726-L726] (unsigned long )arg == 0UL [2024-01-31 16:02:03,534 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] ((((((((((((((2147483638LL + (long long )d) + (long long )oldTop >= 0LL) && ((2147483638LL + (long long )d) + (long long )newTop >= 0LL)) && ((4294967296LL + (long long )newTop) + (long long )oldTop >= 0LL)) && ((2147483658LL - (long long )d) + (long long )oldTop >= 0LL)) && ((2147483658LL - (long long )d) + (long long )newTop >= 0LL)) && ((4294967295LL - (long long )newTop) + (long long )oldTop >= 0LL)) && ((2147483637LL + (long long )d) - (long long )oldTop >= 0LL)) && ((2147483637LL + (long long )d) - (long long )newTop >= 0LL)) && ((4294967295LL + (long long )newTop) - (long long )oldTop >= 0LL)) && ((2147483657LL - (long long )d) - (long long )oldTop >= 0LL)) && ((2147483657LL - (long long )d) - (long long )newTop >= 0LL)) && ((4294967294LL - (long long )newTop) - (long long )oldTop >= 0LL)) && (10 == d)) && (d == 10) [2024-01-31 16:02:03,534 INFO L98 nessWitnessExtractor]: Location invariant after [L710-L710] ((((((((((((((((-9LL + (long long )d) + (long long )oldTop >= 0LL) && ((2147483638LL + (long long )d) + (long long )newTop >= 0LL)) && ((2147483649LL + (long long )newTop) + (long long )oldTop >= 0LL)) && ((11LL - (long long )d) + (long long )oldTop >= 0LL)) && ((2147483648LL - (long long )newTop) + (long long )oldTop >= 0LL)) && ((2147483658LL - (long long )d) + (long long )newTop >= 0LL)) && ((-11LL + (long long )d) - (long long )oldTop >= 0LL)) && ((2147483637LL + (long long )d) - (long long )newTop >= 0LL)) && ((2147483647LL + (long long )newTop) - (long long )oldTop >= 0LL)) && ((9LL - (long long )d) - (long long )oldTop >= 0LL)) && ((2147483646LL - (long long )newTop) - (long long )oldTop >= 0LL)) && ((2147483657LL - (long long )d) - (long long )newTop >= 0LL)) && (-1 == oldTop)) && (10 == d)) && (d == 10)) && (oldTop == -1) [2024-01-31 16:02:03,535 INFO L98 nessWitnessExtractor]: Location invariant before [L696-L696] (((((((0 <= m) && (0 <= top)) && (1 <= next_alloc_idx)) && (next_alloc_idx <= 66)) && (m <= 1)) && (top <= 64)) && (next_alloc_idx % 2 == 1)) && (m == 0 || m == 1) [2024-01-31 16:02:03,535 INFO L98 nessWitnessExtractor]: Location invariant before [L707-L707] ((((((((0 <= m) && (0 <= top)) && (1 <= next_alloc_idx)) && (next_alloc_idx <= 64)) && (m <= 1)) && (top <= 64)) && (next_alloc_idx % 2 == 1)) && (m == 0 || m == 1)) && (((1 <= *curr_alloc_idx && *curr_alloc_idx <= 64) && *curr_alloc_idx % 2 == 1) || *curr_alloc_idx == -1) [2024-01-31 16:02:03,535 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] ((((((0 <= oldTop) && (1 <= newTop)) && (oldTop <= 64)) && (newTop <= 64)) && (10 == d)) && (d == 10)) && (newTop != 0) [2024-01-31 16:02:03,535 INFO L98 nessWitnessExtractor]: Location invariant before [L730-L730] (((((((((0 <= m) && (1 <= next_alloc_idx)) && (1 <= top)) && (next_alloc_idx <= 66)) && (m <= 1)) && (top <= 64)) && (next_alloc_idx % 2 == 1)) && ((unsigned long )arg == 0UL)) && (top != 0)) && (m == 0 || m == 1) [2024-01-31 16:02:03,535 INFO L98 nessWitnessExtractor]: Location invariant after [L710-L710] ((((((((((((((2147483638LL + (long long )d) + (long long )oldTop >= 0LL) && ((2147483638LL + (long long )d) + (long long )newTop >= 0LL)) && ((4294967296LL + (long long )newTop) + (long long )oldTop >= 0LL)) && ((2147483658LL - (long long )d) + (long long )oldTop >= 0LL)) && ((2147483658LL - (long long )d) + (long long )newTop >= 0LL)) && ((4294967295LL - (long long )newTop) + (long long )oldTop >= 0LL)) && ((2147483637LL + (long long )d) - (long long )oldTop >= 0LL)) && ((2147483637LL + (long long )d) - (long long )newTop >= 0LL)) && ((4294967295LL + (long long )newTop) - (long long )oldTop >= 0LL)) && ((2147483657LL - (long long )d) - (long long )oldTop >= 0LL)) && ((2147483657LL - (long long )d) - (long long )newTop >= 0LL)) && ((4294967294LL - (long long )newTop) - (long long )oldTop >= 0LL)) && (10 == d)) && (d == 10) [2024-01-31 16:02:03,535 INFO L98 nessWitnessExtractor]: Location invariant before [L717-L717] ((((((((((1 <= newTop) && (newTop <= 64)) && ((-9LL + (long long )d) + (long long )oldTop >= 0LL)) && ((11LL - (long long )d) + (long long )oldTop >= 0LL)) && ((-11LL + (long long )d) - (long long )oldTop >= 0LL)) && ((9LL - (long long )d) - (long long )oldTop >= 0LL)) && (-1 == oldTop)) && (10 == d)) && (d == 10)) && (oldTop == -1)) && (newTop != 0) [2024-01-31 16:02:03,535 INFO L98 nessWitnessExtractor]: Location invariant before [L713-L713] (((((((((((((((((-10LL + (long long )d) + (long long )newTop >= 0LL) && ((-9LL + (long long )d) + (long long )oldTop >= 0LL)) && ((1LL + (long long )newTop) + (long long )oldTop >= 0LL)) && ((1LL - (long long )newTop) + (long long )oldTop >= 0LL)) && ((10LL - (long long )d) + (long long )newTop >= 0LL)) && ((11LL - (long long )d) + (long long )oldTop >= 0LL)) && ((-11LL + (long long )d) - (long long )oldTop >= 0LL)) && ((-10LL + (long long )d) - (long long )newTop >= 0LL)) && ((-1LL + (long long )newTop) - (long long )oldTop >= 0LL)) && ((-1LL - (long long )newTop) - (long long )oldTop >= 0LL)) && ((9LL - (long long )d) - (long long )oldTop >= 0LL)) && ((10LL - (long long )d) - (long long )newTop >= 0LL)) && (-1 == oldTop)) && (10 == d)) && (d == 10)) && (oldTop == -1)) && (newTop == 0) [2024-01-31 16:02:03,536 INFO L98 nessWitnessExtractor]: Location invariant before [L712-L712] (((((((((0 <= newTop) && (newTop <= 64)) && ((-9LL + (long long )d) + (long long )oldTop >= 0LL)) && ((11LL - (long long )d) + (long long )oldTop >= 0LL)) && ((-11LL + (long long )d) - (long long )oldTop >= 0LL)) && ((9LL - (long long )d) - (long long )oldTop >= 0LL)) && (-1 == oldTop)) && (10 == d)) && (d == 10)) && (oldTop == -1) [2024-01-31 16:02:03,536 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] (unsigned long )arg == 0UL [2024-01-31 16:02:03,536 INFO L98 nessWitnessExtractor]: Location invariant before [L728-L728] (unsigned long )arg == 0UL [2024-01-31 16:02:03,536 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] ((((((((((((((0 <= m) && (0 <= top)) && (0 <= oldTop)) && (1 <= next_alloc_idx)) && (1 <= newTop)) && (next_alloc_idx <= 66)) && (m <= 1)) && (top <= 64)) && (oldTop <= 64)) && (newTop <= 64)) && (10 == d)) && (d == 10)) && (next_alloc_idx % 2 == 1)) && (newTop != 0)) && (m == 0 || m == 1) [2024-01-31 16:02:03,537 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] ((((((((((((((((-9LL + (long long )d) + (long long )oldTop >= 0LL) && ((2147483638LL + (long long )d) + (long long )newTop >= 0LL)) && ((2147483649LL + (long long )newTop) + (long long )oldTop >= 0LL)) && ((11LL - (long long )d) + (long long )oldTop >= 0LL)) && ((2147483648LL - (long long )newTop) + (long long )oldTop >= 0LL)) && ((2147483658LL - (long long )d) + (long long )newTop >= 0LL)) && ((-11LL + (long long )d) - (long long )oldTop >= 0LL)) && ((2147483637LL + (long long )d) - (long long )newTop >= 0LL)) && ((2147483647LL + (long long )newTop) - (long long )oldTop >= 0LL)) && ((9LL - (long long )d) - (long long )oldTop >= 0LL)) && ((2147483646LL - (long long )newTop) - (long long )oldTop >= 0LL)) && ((2147483657LL - (long long )d) - (long long )newTop >= 0LL)) && (-1 == oldTop)) && (10 == d)) && (d == 10)) && (oldTop == -1) [2024-01-31 16:02:03,537 INFO L98 nessWitnessExtractor]: Location invariant before [L697-L697] (((((((0 <= m) && (0 <= top)) && (1 <= next_alloc_idx)) && (next_alloc_idx <= 66)) && (m <= 1)) && (top <= 64)) && (next_alloc_idx % 2 == 1)) && (m == 0 || m == 1) [2024-01-31 16:02:03,537 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] ((((((0 <= oldTop) && (1 <= newTop)) && (oldTop <= 64)) && (newTop <= 64)) && (10 == d)) && (d == 10)) && (newTop != 0) [2024-01-31 16:02:03,537 INFO L98 nessWitnessExtractor]: Location invariant before [L715-L715] ((((((((((1 <= newTop) && (newTop <= 64)) && ((-9LL + (long long )d) + (long long )oldTop >= 0LL)) && ((11LL - (long long )d) + (long long )oldTop >= 0LL)) && ((-11LL + (long long )d) - (long long )oldTop >= 0LL)) && ((9LL - (long long )d) - (long long )oldTop >= 0LL)) && (-1 == oldTop)) && (10 == d)) && (d == 10)) && (oldTop == -1)) && (newTop != 0) [2024-01-31 16:02:03,537 INFO L98 nessWitnessExtractor]: Location invariant before [L716-L716] ((((((((((1 <= newTop) && (newTop <= 64)) && ((-9LL + (long long )d) + (long long )oldTop >= 0LL)) && ((11LL - (long long )d) + (long long )oldTop >= 0LL)) && ((-11LL + (long long )d) - (long long )oldTop >= 0LL)) && ((9LL - (long long )d) - (long long )oldTop >= 0LL)) && (-1 == oldTop)) && (10 == d)) && (d == 10)) && (oldTop == -1)) && (newTop != 0) [2024-01-31 16:02:03,537 INFO L98 nessWitnessExtractor]: Location invariant before [L711-L711] (((((((((((((((((((-9LL + (long long )d) + (long long )oldTop >= 0LL) && ((-9LL + (long long )d) + (long long )newTop >= 0LL)) && ((2LL + (long long )newTop) + (long long )oldTop >= 0LL)) && ((0LL - (long long )newTop) + (long long )oldTop >= 0LL)) && ((11LL - (long long )d) + (long long )oldTop >= 0LL)) && ((11LL - (long long )d) + (long long )newTop >= 0LL)) && ((-11LL + (long long )d) - (long long )oldTop >= 0LL)) && ((-11LL + (long long )d) - (long long )newTop >= 0LL)) && ((-2LL - (long long )newTop) - (long long )oldTop >= 0LL)) && ((9LL - (long long )d) - (long long )oldTop >= 0LL)) && ((9LL - (long long )d) - (long long )newTop >= 0LL)) && ((long long )newTop - (long long )oldTop >= 0LL)) && (-1 == oldTop)) && (-1 == newTop)) && (10 == d)) && (d == 10)) && (oldTop == -1)) && (oldTop == newTop)) && (newTop == -1) [2024-01-31 16:02:03,537 INFO L98 nessWitnessExtractor]: Location invariant after [L706-L706] (((((((((0 <= m) && (0 <= top)) && (65 <= next_alloc_idx)) && (next_alloc_idx <= 66)) && (m <= 1)) && (top <= 64)) && (*curr_alloc_idx == -1)) && (next_alloc_idx % 2 == 1)) && (next_alloc_idx != -1)) && (m == 0 || m == 1) [2024-01-31 16:02:03,538 INFO L98 nessWitnessExtractor]: Location invariant before [L706-L706] ((((((((0 <= m) && (0 <= top)) && (1 <= next_alloc_idx)) && (next_alloc_idx <= 66)) && (m <= 1)) && (top <= 64)) && (*curr_alloc_idx == -1)) && (next_alloc_idx % 2 == 1)) && (m == 0 || m == 1) [2024-01-31 16:02:03,538 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] (((((((((((((((0 <= m) && (0 <= oldTop)) && (1 <= next_alloc_idx)) && (1 <= top)) && (1 <= newTop)) && (next_alloc_idx <= 66)) && (m <= 1)) && (top <= 64)) && (oldTop <= 64)) && (newTop <= 64)) && (10 == d)) && (d == 10)) && (next_alloc_idx % 2 == 1)) && (top != 0)) && (newTop != 0)) && (m == 0 || m == 1) [2024-01-31 16:02:03,575 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:02:03,782 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/37_stack_lock_p0_vs_concur.i[30907,30920] [2024-01-31 16:02:03,787 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:02:03,798 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 16:02:03,859 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:02:03,859 WARN L424 MainDispatcher]: Unable to annotate oldTop = -1 with a witness entry [2024-01-31 16:02:03,860 WARN L424 MainDispatcher]: Unable to annotate newTop = -1 with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 16:02:03,905 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/37_stack_lock_p0_vs_concur.i[30907,30920] Start Parsing Local Start Parsing Local [2024-01-31 16:02:03,920 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:02:03,954 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:02:03,955 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:03 WrapperNode [2024-01-31 16:02:03,955 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:02:03,956 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:02:03,956 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:02:03,957 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:02:03,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:03" (1/1) ... [2024-01-31 16:02:03,990 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:03" (1/1) ... [2024-01-31 16:02:04,037 INFO L138 Inliner]: procedures = 173, calls = 82, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 257 [2024-01-31 16:02:04,039 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:02:04,040 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:02:04,040 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:02:04,040 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:02:04,048 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:03" (1/1) ... [2024-01-31 16:02:04,049 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:03" (1/1) ... [2024-01-31 16:02:04,065 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:03" (1/1) ... [2024-01-31 16:02:04,086 INFO L175 MemorySlicer]: Split 62 memory accesses to 3 slices as follows [59, 2, 1]. 95 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [1, 2, 0]. The 3 writes are split as follows [2, 0, 1]. [2024-01-31 16:02:04,094 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:03" (1/1) ... [2024-01-31 16:02:04,096 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:03" (1/1) ... [2024-01-31 16:02:04,108 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:03" (1/1) ... [2024-01-31 16:02:04,110 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:03" (1/1) ... [2024-01-31 16:02:04,121 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:03" (1/1) ... [2024-01-31 16:02:04,122 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:03" (1/1) ... [2024-01-31 16:02:04,125 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:02:04,126 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:02:04,126 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:02:04,126 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:02:04,127 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:03" (1/1) ... [2024-01-31 16:02:04,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:02:04,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:02:04,152 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 16:02:04,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 16:02:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:02:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:02:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:02:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-01-31 16:02:04,203 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-01-31 16:02:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:02:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:02:04,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:02:04,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:02:04,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:02:04,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:02:04,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:02:04,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:02:04,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:02:04,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:02:04,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:02:04,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:02:04,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:02:04,206 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:02:04,328 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:02:04,330 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:02:04,715 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:02:04,715 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:02:04,986 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:02:04,987 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-01-31 16:02:04,992 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:02:04 BoogieIcfgContainer [2024-01-31 16:02:04,992 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:02:04,993 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:02:04,993 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:02:04,996 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:02:04,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:02:03" (1/4) ... [2024-01-31 16:02:04,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54432c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:02:04, skipping insertion in model container [2024-01-31 16:02:04,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:02:03" (2/4) ... [2024-01-31 16:02:04,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54432c9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:02:04, skipping insertion in model container [2024-01-31 16:02:04,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:03" (3/4) ... [2024-01-31 16:02:04,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54432c9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:02:04, skipping insertion in model container [2024-01-31 16:02:04,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:02:04" (4/4) ... [2024-01-31 16:02:05,002 INFO L112 eAbstractionObserver]: Analyzing ICFG 37_stack_lock_p0_vs_concur.i [2024-01-31 16:02:05,016 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:02:05,017 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2024-01-31 16:02:05,017 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:02:05,096 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:02:05,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 60 transitions, 124 flow [2024-01-31 16:02:05,156 INFO L124 PetriNetUnfolderBase]: 3/62 cut-off events. [2024-01-31 16:02:05,157 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:02:05,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 62 events. 3/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 96 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-01-31 16:02:05,160 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 60 transitions, 124 flow [2024-01-31 16:02:05,163 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 60 transitions, 124 flow [2024-01-31 16:02:05,174 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:02:05,212 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;@55351b08, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:02:05,212 INFO L358 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2024-01-31 16:02:05,215 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:02:05,215 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-01-31 16:02:05,215 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:02:05,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:05,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:02:05,216 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-31 16:02:05,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:05,220 INFO L85 PathProgramCache]: Analyzing trace with hash 626957756, now seen corresponding path program 1 times [2024-01-31 16:02:05,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:05,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685002928] [2024-01-31 16:02:05,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:05,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:02:05,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:02:05,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:02:05,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685002928] [2024-01-31 16:02:05,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685002928] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:02:05,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:02:05,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:02:05,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961551740] [2024-01-31 16:02:05,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:02:05,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:02:05,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:02:05,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:02:05,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:02:05,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2024-01-31 16:02:05,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 60 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:05,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:02:05,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2024-01-31 16:02:05,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:02:05,698 INFO L124 PetriNetUnfolderBase]: 59/185 cut-off events. [2024-01-31 16:02:05,699 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:02:05,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 185 events. 59/185 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 493 event pairs, 0 based on Foata normal form. 12/173 useless extension candidates. Maximal degree in co-relation 326. Up to 143 conditions per place. [2024-01-31 16:02:05,703 INFO L140 encePairwiseOnDemand]: 45/60 looper letters, 34 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2024-01-31 16:02:05,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 174 flow [2024-01-31 16:02:05,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:02:05,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:02:05,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-01-31 16:02:05,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42916666666666664 [2024-01-31 16:02:05,715 INFO L175 Difference]: Start difference. First operand has 60 places, 60 transitions, 124 flow. Second operand 4 states and 103 transitions. [2024-01-31 16:02:05,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 174 flow [2024-01-31 16:02:05,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 174 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:02:05,722 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 100 flow [2024-01-31 16:02:05,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-01-31 16:02:05,727 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -9 predicate places. [2024-01-31 16:02:05,727 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 100 flow [2024-01-31 16:02:05,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:05,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:05,728 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-01-31 16:02:05,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:02:05,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-31 16:02:05,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:05,729 INFO L85 PathProgramCache]: Analyzing trace with hash -2039192065, now seen corresponding path program 1 times [2024-01-31 16:02:05,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:05,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655535368] [2024-01-31 16:02:05,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:05,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:02:05,768 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:02:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:02:05,789 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:02:05,794 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:02:05,795 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (50 of 51 remaining) [2024-01-31 16:02:05,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 51 remaining) [2024-01-31 16:02:05,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 51 remaining) [2024-01-31 16:02:05,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 51 remaining) [2024-01-31 16:02:05,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 51 remaining) [2024-01-31 16:02:05,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 51 remaining) [2024-01-31 16:02:05,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 51 remaining) [2024-01-31 16:02:05,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 51 remaining) [2024-01-31 16:02:05,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 51 remaining) [2024-01-31 16:02:05,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 51 remaining) [2024-01-31 16:02:05,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 51 remaining) [2024-01-31 16:02:05,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 51 remaining) [2024-01-31 16:02:05,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 51 remaining) [2024-01-31 16:02:05,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 51 remaining) [2024-01-31 16:02:05,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 51 remaining) [2024-01-31 16:02:05,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 51 remaining) [2024-01-31 16:02:05,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONERROR_FUNCTION (34 of 51 remaining) [2024-01-31 16:02:05,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 51 remaining) [2024-01-31 16:02:05,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 51 remaining) [2024-01-31 16:02:05,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 51 remaining) [2024-01-31 16:02:05,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 51 remaining) [2024-01-31 16:02:05,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 51 remaining) [2024-01-31 16:02:05,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 51 remaining) [2024-01-31 16:02:05,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 51 remaining) [2024-01-31 16:02:05,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 51 remaining) [2024-01-31 16:02:05,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 51 remaining) [2024-01-31 16:02:05,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 51 remaining) [2024-01-31 16:02:05,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 51 remaining) [2024-01-31 16:02:05,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 51 remaining) [2024-01-31 16:02:05,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 51 remaining) [2024-01-31 16:02:05,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 51 remaining) [2024-01-31 16:02:05,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 51 remaining) [2024-01-31 16:02:05,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 51 remaining) [2024-01-31 16:02:05,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 51 remaining) [2024-01-31 16:02:05,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 51 remaining) [2024-01-31 16:02:05,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 51 remaining) [2024-01-31 16:02:05,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 51 remaining) [2024-01-31 16:02:05,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 51 remaining) [2024-01-31 16:02:05,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 51 remaining) [2024-01-31 16:02:05,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 51 remaining) [2024-01-31 16:02:05,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 51 remaining) [2024-01-31 16:02:05,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONERROR_FUNCTION (9 of 51 remaining) [2024-01-31 16:02:05,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 51 remaining) [2024-01-31 16:02:05,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 51 remaining) [2024-01-31 16:02:05,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 51 remaining) [2024-01-31 16:02:05,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 51 remaining) [2024-01-31 16:02:05,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 51 remaining) [2024-01-31 16:02:05,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 51 remaining) [2024-01-31 16:02:05,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 51 remaining) [2024-01-31 16:02:05,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 51 remaining) [2024-01-31 16:02:05,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 51 remaining) [2024-01-31 16:02:05,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:02:05,816 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-01-31 16:02:05,818 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 16:02:05,818 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-31 16:02:05,939 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:02:05,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 115 transitions, 240 flow [2024-01-31 16:02:05,984 INFO L124 PetriNetUnfolderBase]: 6/120 cut-off events. [2024-01-31 16:02:05,985 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 16:02:05,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 120 events. 6/120 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 392 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 111. Up to 3 conditions per place. [2024-01-31 16:02:05,986 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 115 transitions, 240 flow [2024-01-31 16:02:05,988 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 115 transitions, 240 flow [2024-01-31 16:02:05,990 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:02:05,993 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;@55351b08, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:02:05,993 INFO L358 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2024-01-31 16:02:05,995 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:02:05,995 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-01-31 16:02:05,995 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:02:05,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:05,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:02:05,996 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 73 more)] === [2024-01-31 16:02:05,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:05,996 INFO L85 PathProgramCache]: Analyzing trace with hash 736756453, now seen corresponding path program 1 times [2024-01-31 16:02:05,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:05,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971854167] [2024-01-31 16:02:05,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:05,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:02:06,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:02:06,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:02:06,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971854167] [2024-01-31 16:02:06,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971854167] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:02:06,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:02:06,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:02:06,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445046891] [2024-01-31 16:02:06,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:02:06,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:02:06,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:02:06,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:02:06,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:02:06,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 115 [2024-01-31 16:02:06,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 115 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:06,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:02:06,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 115 [2024-01-31 16:02:06,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:02:07,252 INFO L124 PetriNetUnfolderBase]: 4291/8181 cut-off events. [2024-01-31 16:02:07,252 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-01-31 16:02:07,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15176 conditions, 8181 events. 4291/8181 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 53159 event pairs, 2323 based on Foata normal form. 789/7373 useless extension candidates. Maximal degree in co-relation 14691. Up to 6753 conditions per place. [2024-01-31 16:02:07,299 INFO L140 encePairwiseOnDemand]: 91/115 looper letters, 92 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2024-01-31 16:02:07,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 123 transitions, 449 flow [2024-01-31 16:02:07,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:02:07,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:02:07,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 243 transitions. [2024-01-31 16:02:07,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5282608695652173 [2024-01-31 16:02:07,305 INFO L175 Difference]: Start difference. First operand has 114 places, 115 transitions, 240 flow. Second operand 4 states and 243 transitions. [2024-01-31 16:02:07,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 123 transitions, 449 flow [2024-01-31 16:02:07,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 123 transitions, 449 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:02:07,308 INFO L231 Difference]: Finished difference. Result has 97 places, 91 transitions, 196 flow [2024-01-31 16:02:07,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=97, PETRI_TRANSITIONS=91} [2024-01-31 16:02:07,309 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -17 predicate places. [2024-01-31 16:02:07,309 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 91 transitions, 196 flow [2024-01-31 16:02:07,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:07,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:07,310 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-01-31 16:02:07,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:02:07,310 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 73 more)] === [2024-01-31 16:02:07,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:07,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1333093282, now seen corresponding path program 1 times [2024-01-31 16:02:07,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:07,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696570682] [2024-01-31 16:02:07,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:07,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:02:07,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:02:07,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:02:07,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696570682] [2024-01-31 16:02:07,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696570682] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:02:07,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:02:07,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:02:07,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75609767] [2024-01-31 16:02:07,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:02:07,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:02:07,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:02:07,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:02:07,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:02:07,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 115 [2024-01-31 16:02:07,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 91 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:07,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:02:07,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 115 [2024-01-31 16:02:07,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:02:08,380 INFO L124 PetriNetUnfolderBase]: 4292/8011 cut-off events. [2024-01-31 16:02:08,380 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-01-31 16:02:08,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15010 conditions, 8011 events. 4292/8011 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 53610 event pairs, 55 based on Foata normal form. 174/6767 useless extension candidates. Maximal degree in co-relation 14994. Up to 6583 conditions per place. [2024-01-31 16:02:08,432 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 120 selfloop transitions, 2 changer transitions 0/148 dead transitions. [2024-01-31 16:02:08,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 148 transitions, 554 flow [2024-01-31 16:02:08,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:02:08,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:02:08,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 241 transitions. [2024-01-31 16:02:08,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5239130434782608 [2024-01-31 16:02:08,435 INFO L175 Difference]: Start difference. First operand has 97 places, 91 transitions, 196 flow. Second operand 4 states and 241 transitions. [2024-01-31 16:02:08,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 148 transitions, 554 flow [2024-01-31 16:02:08,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 148 transitions, 551 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:02:08,439 INFO L231 Difference]: Finished difference. Result has 95 places, 88 transitions, 191 flow [2024-01-31 16:02:08,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=191, PETRI_PLACES=95, PETRI_TRANSITIONS=88} [2024-01-31 16:02:08,441 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -19 predicate places. [2024-01-31 16:02:08,441 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 88 transitions, 191 flow [2024-01-31 16:02:08,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:08,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:08,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:02:08,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:02:08,442 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 73 more)] === [2024-01-31 16:02:08,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:08,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1429479722, now seen corresponding path program 1 times [2024-01-31 16:02:08,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:08,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305371656] [2024-01-31 16:02:08,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:08,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:02:08,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:02:08,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:02:08,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305371656] [2024-01-31 16:02:08,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305371656] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:02:08,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:02:08,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:02:08,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479700945] [2024-01-31 16:02:08,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:02:08,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:02:08,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:02:08,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:02:08,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:02:08,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 115 [2024-01-31 16:02:08,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 88 transitions, 191 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:08,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:02:08,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 115 [2024-01-31 16:02:08,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:02:09,495 INFO L124 PetriNetUnfolderBase]: 4286/7971 cut-off events. [2024-01-31 16:02:09,495 INFO L125 PetriNetUnfolderBase]: For 172/172 co-relation queries the response was YES. [2024-01-31 16:02:09,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14992 conditions, 7971 events. 4286/7971 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 50510 event pairs, 3964 based on Foata normal form. 0/6527 useless extension candidates. Maximal degree in co-relation 14977. Up to 6570 conditions per place. [2024-01-31 16:02:09,529 INFO L140 encePairwiseOnDemand]: 112/115 looper letters, 90 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2024-01-31 16:02:09,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 118 transitions, 442 flow [2024-01-31 16:02:09,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:02:09,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:02:09,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2024-01-31 16:02:09,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5478260869565217 [2024-01-31 16:02:09,531 INFO L175 Difference]: Start difference. First operand has 95 places, 88 transitions, 191 flow. Second operand 3 states and 189 transitions. [2024-01-31 16:02:09,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 118 transitions, 442 flow [2024-01-31 16:02:09,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 118 transitions, 437 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:02:09,533 INFO L231 Difference]: Finished difference. Result has 94 places, 87 transitions, 190 flow [2024-01-31 16:02:09,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2024-01-31 16:02:09,534 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -20 predicate places. [2024-01-31 16:02:09,534 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 190 flow [2024-01-31 16:02:09,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:09,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:09,535 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-01-31 16:02:09,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:02:09,535 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 73 more)] === [2024-01-31 16:02:09,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:09,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1623827070, now seen corresponding path program 1 times [2024-01-31 16:02:09,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:09,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161467491] [2024-01-31 16:02:09,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:09,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:02:09,545 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:02:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:02:09,557 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:02:09,557 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:02:09,557 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (75 of 76 remaining) [2024-01-31 16:02:09,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (74 of 76 remaining) [2024-01-31 16:02:09,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (73 of 76 remaining) [2024-01-31 16:02:09,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (72 of 76 remaining) [2024-01-31 16:02:09,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (71 of 76 remaining) [2024-01-31 16:02:09,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (70 of 76 remaining) [2024-01-31 16:02:09,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (69 of 76 remaining) [2024-01-31 16:02:09,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (68 of 76 remaining) [2024-01-31 16:02:09,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (67 of 76 remaining) [2024-01-31 16:02:09,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (66 of 76 remaining) [2024-01-31 16:02:09,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (65 of 76 remaining) [2024-01-31 16:02:09,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (64 of 76 remaining) [2024-01-31 16:02:09,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (63 of 76 remaining) [2024-01-31 16:02:09,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (62 of 76 remaining) [2024-01-31 16:02:09,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (61 of 76 remaining) [2024-01-31 16:02:09,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONWITNESS_INVARIANT (60 of 76 remaining) [2024-01-31 16:02:09,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONERROR_FUNCTION (59 of 76 remaining) [2024-01-31 16:02:09,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (58 of 76 remaining) [2024-01-31 16:02:09,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 76 remaining) [2024-01-31 16:02:09,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 76 remaining) [2024-01-31 16:02:09,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 76 remaining) [2024-01-31 16:02:09,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 76 remaining) [2024-01-31 16:02:09,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 76 remaining) [2024-01-31 16:02:09,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 76 remaining) [2024-01-31 16:02:09,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 76 remaining) [2024-01-31 16:02:09,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 76 remaining) [2024-01-31 16:02:09,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 76 remaining) [2024-01-31 16:02:09,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 76 remaining) [2024-01-31 16:02:09,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 76 remaining) [2024-01-31 16:02:09,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 76 remaining) [2024-01-31 16:02:09,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 76 remaining) [2024-01-31 16:02:09,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 76 remaining) [2024-01-31 16:02:09,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 76 remaining) [2024-01-31 16:02:09,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 76 remaining) [2024-01-31 16:02:09,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 76 remaining) [2024-01-31 16:02:09,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 76 remaining) [2024-01-31 16:02:09,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 76 remaining) [2024-01-31 16:02:09,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 76 remaining) [2024-01-31 16:02:09,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 76 remaining) [2024-01-31 16:02:09,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 76 remaining) [2024-01-31 16:02:09,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 76 remaining) [2024-01-31 16:02:09,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONERROR_FUNCTION (34 of 76 remaining) [2024-01-31 16:02:09,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 76 remaining) [2024-01-31 16:02:09,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 76 remaining) [2024-01-31 16:02:09,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 76 remaining) [2024-01-31 16:02:09,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 76 remaining) [2024-01-31 16:02:09,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 76 remaining) [2024-01-31 16:02:09,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 76 remaining) [2024-01-31 16:02:09,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 76 remaining) [2024-01-31 16:02:09,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 76 remaining) [2024-01-31 16:02:09,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 76 remaining) [2024-01-31 16:02:09,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 76 remaining) [2024-01-31 16:02:09,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 76 remaining) [2024-01-31 16:02:09,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 76 remaining) [2024-01-31 16:02:09,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 76 remaining) [2024-01-31 16:02:09,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 76 remaining) [2024-01-31 16:02:09,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 76 remaining) [2024-01-31 16:02:09,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 76 remaining) [2024-01-31 16:02:09,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 76 remaining) [2024-01-31 16:02:09,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 76 remaining) [2024-01-31 16:02:09,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 76 remaining) [2024-01-31 16:02:09,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 76 remaining) [2024-01-31 16:02:09,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 76 remaining) [2024-01-31 16:02:09,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 76 remaining) [2024-01-31 16:02:09,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 76 remaining) [2024-01-31 16:02:09,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 76 remaining) [2024-01-31 16:02:09,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONERROR_FUNCTION (9 of 76 remaining) [2024-01-31 16:02:09,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 76 remaining) [2024-01-31 16:02:09,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 76 remaining) [2024-01-31 16:02:09,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 76 remaining) [2024-01-31 16:02:09,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 76 remaining) [2024-01-31 16:02:09,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 76 remaining) [2024-01-31 16:02:09,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 76 remaining) [2024-01-31 16:02:09,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 76 remaining) [2024-01-31 16:02:09,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 76 remaining) [2024-01-31 16:02:09,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 76 remaining) [2024-01-31 16:02:09,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:02:09,574 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-01-31 16:02:09,574 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 16:02:09,574 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-01-31 16:02:09,669 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:02:09,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 170 transitions, 358 flow [2024-01-31 16:02:09,689 INFO L124 PetriNetUnfolderBase]: 9/178 cut-off events. [2024-01-31 16:02:09,689 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-01-31 16:02:09,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 178 events. 9/178 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 744 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 165. Up to 4 conditions per place. [2024-01-31 16:02:09,691 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 170 transitions, 358 flow [2024-01-31 16:02:09,692 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 168 places, 170 transitions, 358 flow [2024-01-31 16:02:09,693 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:02:09,694 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;@55351b08, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:02:09,694 INFO L358 AbstractCegarLoop]: Starting to check reachability of 101 error locations. [2024-01-31 16:02:09,695 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:02:09,695 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-01-31 16:02:09,695 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-31 16:02:09,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:09,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:02:09,695 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 98 more)] === [2024-01-31 16:02:09,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:09,696 INFO L85 PathProgramCache]: Analyzing trace with hash 899040197, now seen corresponding path program 1 times [2024-01-31 16:02:09,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:09,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313264255] [2024-01-31 16:02:09,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:09,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:02:09,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:02:09,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:02:09,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313264255] [2024-01-31 16:02:09,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313264255] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:02:09,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:02:09,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:02:09,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877042768] [2024-01-31 16:02:09,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:02:09,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:02:09,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:02:09,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:02:09,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:02:09,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 170 [2024-01-31 16:02:09,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 170 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:09,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:02:09,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 170 [2024-01-31 16:02:09,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand