./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/11_fmaxsymopt-pthread.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/11_fmaxsymopt-pthread.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 59af5db6 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/11_fmaxsymopt-pthread.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/11_fmaxsymopt-pthread.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-dev-59af5db-m [2024-02-02 09:11:56,534 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-02 09:11:56,607 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-02 09:11:56,612 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-02 09:11:56,613 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-02 09:11:56,635 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-02 09:11:56,636 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-02 09:11:56,636 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-02 09:11:56,637 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-02 09:11:56,637 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-02 09:11:56,638 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-02 09:11:56,638 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-02 09:11:56,639 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-02 09:11:56,639 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-02 09:11:56,640 INFO L153 SettingsManager]: * Use SBE=true [2024-02-02 09:11:56,640 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-02 09:11:56,640 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-02 09:11:56,641 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-02 09:11:56,641 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-02 09:11:56,641 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-02 09:11:56,642 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-02 09:11:56,642 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-02 09:11:56,643 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-02 09:11:56,643 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-02 09:11:56,644 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-02 09:11:56,644 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-02 09:11:56,644 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-02 09:11:56,645 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-02 09:11:56,645 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-02 09:11:56,646 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-02 09:11:56,646 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-02 09:11:56,646 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-02 09:11:56,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:11:56,647 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-02 09:11:56,647 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-02 09:11:56,648 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-02 09:11:56,648 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-02 09:11:56,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-02 09:11:56,649 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-02 09:11:56,656 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-02 09:11:56,656 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-02 09:11:56,660 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-02 09:11:56,660 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-02 09:11:56,661 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-02 09:11:56,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-02 09:11:56,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-02 09:11:56,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-02 09:11:56,953 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-02 09:11:56,954 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-02 09:11:56,955 INFO L431 ainManager$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/11_fmaxsymopt-pthread.yml/witness.yml [2024-02-02 09:11:57,133 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-02 09:11:57,135 INFO L274 PluginConnector]: CDTParser initialized [2024-02-02 09:11:57,136 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/11_fmaxsymopt-pthread.i [2024-02-02 09:11:58,268 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-02 09:11:58,501 INFO L384 CDTParser]: Found 1 translation units. [2024-02-02 09:11:58,502 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/11_fmaxsymopt-pthread.i [2024-02-02 09:11:58,525 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1d8ff2bd/d0bc3d0ea33d43c8ab07b96346615d09/FLAG9ad9ecee7 [2024-02-02 09:11:58,536 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1d8ff2bd/d0bc3d0ea33d43c8ab07b96346615d09 [2024-02-02 09:11:58,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-02 09:11:58,538 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-02 09:11:58,539 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-02 09:11:58,539 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-02 09:11:58,547 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-02 09:11:58,547 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:11:57" (1/2) ... [2024-02-02 09:11:58,548 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425335f8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:58, skipping insertion in model container [2024-02-02 09:11:58,549 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:11:57" (1/2) ... [2024-02-02 09:11:58,550 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2c5664cc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:58, skipping insertion in model container [2024-02-02 09:11:58,550 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:11:58" (2/2) ... [2024-02-02 09:11:58,550 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425335f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:58, skipping insertion in model container [2024-02-02 09:11:58,551 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:11:58" (2/2) ... [2024-02-02 09:11:58,551 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-02 09:11:58,665 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-02 09:11:58,667 INFO L101 nessWitnessExtractor]: Location invariant before [L699-L701] (((offset <= 2147483645) && (i <= 2147483646)) && (e == 0)) && ((((-2147483647 <= i && (1LL - (long long )i) + (long long )offset >= 0LL) && (-1LL + (long long )i) - (long long )offset >= 0LL) && my_max == 0) || (((((0LL - (long long )i) + (long long )offset >= 0LL && (long long )i - (long long )offset >= 0LL) && (-0x7FFFFFFF-1) == my_max) && offset == i) && my_max == (-0x7FFFFFFF-1))) [2024-02-02 09:11:58,667 INFO L101 nessWitnessExtractor]: Location invariant before [L710-L710] (((((((-2147483646 <= i) && (0 <= (int )max)) && (offset <= 2147483645)) && ((0LL - (long long )e) + (long long )my_max >= 0LL)) && ((2LL - (long long )i) + (long long )offset >= 0LL)) && ((-2LL + (long long )i) - (long long )offset >= 0LL)) && (e == 0)) && (my_max == 0) [2024-02-02 09:11:58,667 INFO L101 nessWitnessExtractor]: Location invariant before [L713-L713] (((((((-2147483646 <= i) && (0 <= (int )max)) && (offset <= 2147483645)) && ((0LL - (long long )e) + (long long )my_max >= 0LL)) && ((2LL - (long long )i) + (long long )offset >= 0LL)) && ((-2LL + (long long )i) - (long long )offset >= 0LL)) && (e == 0)) && (my_max == 0) [2024-02-02 09:11:58,667 INFO L101 nessWitnessExtractor]: Location invariant after [L693-L714] ((((((-2147483646 <= i) && (offset <= 2147483645)) && ((0LL - (long long )e) + (long long )my_max >= 0LL)) && ((2LL - (long long )i) + (long long )offset >= 0LL)) && ((-2LL + (long long )i) - (long long )offset >= 0LL)) && (e == 0)) && (my_max == 0) [2024-02-02 09:11:58,667 INFO L101 nessWitnessExtractor]: Location invariant before [L712-L712] (((((((((((((((-2147483646 <= i) && (offset <= 2147483645)) && ((0LL - (long long )e) + (long long )my_max >= 0LL)) && ((2LL - (long long )i) + (long long )offset >= 0LL)) && ((-2LL + (long long )i) - (long long )offset >= 0LL)) && (e == 0)) && (my_max == 0)) && (-2147483646 <= i)) && (offset <= 2147483645)) && ((int )max <= -1)) && ((0LL - (long long )e) + (long long )my_max >= 0LL)) && ((2LL - (long long )i) + (long long )offset >= 0LL)) && ((-2LL + (long long )i) - (long long )offset >= 0LL)) && (e == 0)) && (my_max == 0)) && ((int )max != 0) [2024-02-02 09:11:58,668 INFO L101 nessWitnessExtractor]: Location invariant before [L711-L711] ((((((-2147483646 <= i) && (offset <= 2147483645)) && ((0LL - (long long )e) + (long long )my_max >= 0LL)) && ((2LL - (long long )i) + (long long )offset >= 0LL)) && ((-2LL + (long long )i) - (long long )offset >= 0LL)) && (e == 0)) && (my_max == 0) [2024-02-02 09:11:58,668 INFO L101 nessWitnessExtractor]: Location invariant before [L698-L698] (((offset <= 2147483645) && (i <= 2147483646)) && ((long long )e - (long long )my_max >= 0LL)) && ((((((((-2147483647 <= i && (4294967294LL + (long long )e) + (long long )my_max >= 0LL) && (0LL - (long long )e) + (long long )my_max >= 0LL) && (1LL - (long long )i) + (long long )offset >= 0LL) && (-1LL + (long long )i) - (long long )offset >= 0LL) && e == 0) && e == my_max) && my_max == 0) || ((((((((4294967296LL + (long long )e) + (long long )my_max >= 0LL && (0LL - (long long )i) + (long long )offset >= 0LL) && (4294967295LL - (long long )e) + (long long )my_max >= 0LL) && (-1LL - (long long )e) - (long long )my_max >= 0LL) && (long long )i - (long long )offset >= 0LL) && (-0x7FFFFFFF-1) == my_max) && offset == i) && my_max == (-0x7FFFFFFF-1))) [2024-02-02 09:11:58,668 INFO L101 nessWitnessExtractor]: Location invariant before [L718-L718] (unsigned long )arg == 0UL [2024-02-02 09:11:58,668 INFO L101 nessWitnessExtractor]: Location invariant before [L700-L700] (((((((((offset <= 2147483645) && (i <= 2147483646)) && ((4294967295LL + (long long )e) + (long long )my_max >= 0LL)) && ((0LL - (long long )i) + (long long )offset >= 0LL)) && ((-1LL + (long long )e) - (long long )my_max >= 0LL)) && ((long long )i - (long long )offset >= 0LL)) && ((-0x7FFFFFFF-1) == my_max)) && (offset == i)) && (e == 0)) && (my_max == (-0x7FFFFFFF-1)) [2024-02-02 09:11:58,668 INFO L101 nessWitnessExtractor]: Location invariant before [L717-L717] ((offset <= 2147483646) && (offset % 2 == 0)) && ((unsigned long )arg == 0UL) [2024-02-02 09:11:58,669 INFO L101 nessWitnessExtractor]: Location invariant before [L719-L719] (unsigned long )arg == 0UL [2024-02-02 09:11:58,669 INFO L101 nessWitnessExtractor]: Location invariant before [L702-L702] (((((offset <= 2147483645) && (i <= 2147483646)) && ((0LL - (long long )e) + (long long )my_max >= 0LL)) && (e == 0)) && (my_max == 0)) && (((-2147483647 <= i && (1LL - (long long )i) + (long long )offset >= 0LL) && (-1LL + (long long )i) - (long long )offset >= 0LL) || ((((((4294967294LL + (long long )e) + (long long )my_max >= 0LL && (0LL - (long long )i) + (long long )offset >= 0LL) && (long long )i - (long long )offset >= 0LL) && (long long )e - (long long )my_max >= 0LL) && offset == i) && e == my_max)) [2024-02-02 09:11:58,669 INFO L101 nessWitnessExtractor]: Location invariant before [L707-L707] ((((((((-2147483646 <= i) && (offset <= 2147483645)) && ((int )max <= -1)) && ((0LL - (long long )e) + (long long )my_max >= 0LL)) && ((2LL - (long long )i) + (long long )offset >= 0LL)) && ((-2LL + (long long )i) - (long long )offset >= 0LL)) && (e == 0)) && (my_max == 0)) && ((int )max != 0) [2024-02-02 09:11:58,669 INFO L101 nessWitnessExtractor]: Location invariant before [L704-L704] ((((((-2147483646 <= i) && (offset <= 2147483645)) && ((0LL - (long long )e) + (long long )my_max >= 0LL)) && ((2LL - (long long )i) + (long long )offset >= 0LL)) && ((-2LL + (long long )i) - (long long )offset >= 0LL)) && (e == 0)) && (my_max == 0) [2024-02-02 09:11:58,669 INFO L101 nessWitnessExtractor]: Location invariant before [L702-L702] (((((offset <= 2147483645) && (i <= 2147483646)) && ((0LL - (long long )e) + (long long )my_max >= 0LL)) && (e == 0)) && (my_max == 0)) && (((-2147483647 <= i && (1LL - (long long )i) + (long long )offset >= 0LL) && (-1LL + (long long )i) - (long long )offset >= 0LL) || ((((((4294967294LL + (long long )e) + (long long )my_max >= 0LL && (0LL - (long long )i) + (long long )offset >= 0LL) && (long long )i - (long long )offset >= 0LL) && (long long )e - (long long )my_max >= 0LL) && offset == i) && e == my_max)) [2024-02-02 09:11:58,669 INFO L101 nessWitnessExtractor]: Location invariant before [L706-L708] ((((((-2147483646 <= i) && (offset <= 2147483645)) && ((0LL - (long long )e) + (long long )my_max >= 0LL)) && ((2LL - (long long )i) + (long long )offset >= 0LL)) && ((-2LL + (long long )i) - (long long )offset >= 0LL)) && (e == 0)) && (my_max == 0) [2024-02-02 09:11:58,670 INFO L101 nessWitnessExtractor]: Location invariant before [L696-L696] ((((((((((((4294967296LL + (long long )i) + (long long )my_max >= 0LL) && ((4294967296LL + (long long )e) + (long long )i >= 0LL)) && ((4294967296LL + (long long )e) + (long long )my_max >= 0LL)) && ((4294967295LL - (long long )i) + (long long )my_max >= 0LL)) && ((4294967295LL - (long long )e) + (long long )i >= 0LL)) && ((4294967295LL - (long long )e) + (long long )my_max >= 0LL)) && ((4294967295LL + (long long )i) - (long long )my_max >= 0LL)) && ((4294967295LL + (long long )e) - (long long )i >= 0LL)) && ((4294967295LL + (long long )e) - (long long )my_max >= 0LL)) && ((4294967294LL - (long long )i) - (long long )my_max >= 0LL)) && ((4294967294LL - (long long )e) - (long long )i >= 0LL)) && ((4294967294LL - (long long )e) - (long long )my_max >= 0LL) [2024-02-02 09:11:58,670 INFO L101 nessWitnessExtractor]: Location invariant before [L716-L716] (unsigned long )arg == 0UL [2024-02-02 09:11:58,670 INFO L101 nessWitnessExtractor]: Loop invariant at [L697-L703] (((((offset <= 2147483645 && (0LL - (long long )e) + (long long )my_max >= 0LL) && e == 0) && my_max == 0) && (((((-2147483646 <= i && (2LL - (long long )i) + (long long )offset >= 0LL) && (-2LL + (long long )i) - (long long )offset >= 0LL) || (((-2147483647 <= i && i <= 2147483646) && (1LL - (long long )i) + (long long )offset >= 0LL) && (-1LL + (long long )i) - (long long )offset >= 0LL)) || (((((-2147483647 <= i && (4294967294LL + (long long )e) + (long long )my_max >= 0LL) && (1LL - (long long )i) + (long long )offset >= 0LL) && (-1LL + (long long )i) - (long long )offset >= 0LL) && (long long )e - (long long )my_max >= 0LL) && e == my_max)) || ((((((i <= 2147483646 && (4294967294LL + (long long )e) + (long long )my_max >= 0LL) && (0LL - (long long )i) + (long long )offset >= 0LL) && (long long )i - (long long )offset >= 0LL) && (long long )e - (long long )my_max >= 0LL) && offset == i) && e == my_max))) || (((((((((4294967296LL + (long long )e) + (long long )my_max >= 0LL && (0LL - (long long )i) + (long long )offset >= 0LL) && (4294967295LL - (long long )e) + (long long )my_max >= 0LL) && (-1LL - (long long )e) - (long long )my_max >= 0LL) && (long long )i - (long long )offset >= 0LL) && (long long )e - (long long )my_max >= 0LL) && (-0x7FFFFFFF-1) == my_max) && offset == i) && my_max == (-0x7FFFFFFF-1))) || ((((((((((((((4294967296LL + (long long )i) + (long long )my_max >= 0LL && (4294967296LL + (long long )e) + (long long )i >= 0LL) && (4294967296LL + (long long )e) + (long long )my_max >= 0LL) && (4294967295LL - (long long )i) + (long long )my_max >= 0LL) && (4294967295LL - (long long )e) + (long long )i >= 0LL) && (4294967295LL - (long long )e) + (long long )my_max >= 0LL) && (4294967295LL + (long long )e) - (long long )i >= 0LL) && (-1LL - (long long )i) - (long long )my_max >= 0LL) && (-1LL - (long long )e) - (long long )my_max >= 0LL) && (4294967294LL - (long long )e) - (long long )i >= 0LL) && (long long )i - (long long )my_max >= 0LL) && (long long )e - (long long )my_max >= 0LL) && (-0x7FFFFFFF-1) == my_max) && my_max == (-0x7FFFFFFF-1)) [2024-02-02 09:11:58,670 INFO L101 nessWitnessExtractor]: Location invariant before [L712-L712] (((((((((((((((-2147483646 <= i) && (offset <= 2147483645)) && ((0LL - (long long )e) + (long long )my_max >= 0LL)) && ((2LL - (long long )i) + (long long )offset >= 0LL)) && ((-2LL + (long long )i) - (long long )offset >= 0LL)) && (e == 0)) && (my_max == 0)) && (-2147483646 <= i)) && (offset <= 2147483645)) && ((int )max <= -1)) && ((0LL - (long long )e) + (long long )my_max >= 0LL)) && ((2LL - (long long )i) + (long long )offset >= 0LL)) && ((-2LL + (long long )i) - (long long )offset >= 0LL)) && (e == 0)) && (my_max == 0)) && ((int )max != 0) [2024-02-02 09:11:58,719 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-02 09:11:59,157 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/11_fmaxsymopt-pthread.i[30871,30884] [2024-02-02 09:11:59,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:11:59,189 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:11:59,284 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:11:59,309 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/11_fmaxsymopt-pthread.i[30871,30884] Start Parsing Local [2024-02-02 09:11:59,312 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry Start Parsing Local [2024-02-02 09:11:59,315 WARN L424 MainDispatcher]: Unable to annotate inline void findMax(int offset){ int i; int e; int my_max = 0x80000000; for(i = offset; i < offset+2; i++) { e = storage[i]; if(e > my_max) { my_max = e; } { if(!(e <= my_max)) { goto ERROR; } }; } pthread_mutex_lock(&m); { if(my_max > max) { max = my_max; } } pthread_mutex_unlock(&m); pthread_mutex_lock(&m); { if(!(my_max <= max)) { ERROR: {reach_error();abort();}(void)0; } }; pthread_mutex_unlock(&m); } with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:11:59,320 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:11:59,353 INFO L206 MainTranslator]: Completed translation [2024-02-02 09:11:59,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:59 WrapperNode [2024-02-02 09:11:59,356 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-02 09:11:59,357 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-02 09:11:59,357 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-02 09:11:59,357 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-02 09:11:59,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:59" (1/1) ... [2024-02-02 09:11:59,382 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:59" (1/1) ... [2024-02-02 09:11:59,422 INFO L138 Inliner]: procedures = 165, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 116 [2024-02-02 09:11:59,422 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-02 09:11:59,423 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-02 09:11:59,423 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-02 09:11:59,423 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-02 09:11:59,433 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:59" (1/1) ... [2024-02-02 09:11:59,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:59" (1/1) ... [2024-02-02 09:11:59,437 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:59" (1/1) ... [2024-02-02 09:11:59,456 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 5, 8, 1]. 50 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 6, 0]. The 2 writes are split as follows [0, 0, 1, 1]. [2024-02-02 09:11:59,457 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:59" (1/1) ... [2024-02-02 09:11:59,457 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:59" (1/1) ... [2024-02-02 09:11:59,465 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:59" (1/1) ... [2024-02-02 09:11:59,468 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:59" (1/1) ... [2024-02-02 09:11:59,471 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:59" (1/1) ... [2024-02-02 09:11:59,472 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:59" (1/1) ... [2024-02-02 09:11:59,476 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-02 09:11:59,477 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-02 09:11:59,477 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-02 09:11:59,477 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-02 09:11:59,478 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:59" (1/1) ... [2024-02-02 09:11:59,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:11:59,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:11:59,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-02 09:11:59,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-02 09:11:59,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-02 09:11:59,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-02 09:11:59,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-02 09:11:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-02 09:11:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-02-02 09:11:59,555 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-02-02 09:11:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-02 09:11:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-02 09:11:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-02 09:11:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-02 09:11:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-02 09:11:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-02 09:11:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-02 09:11:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-02 09:11:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-02 09:11:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-02 09:11:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-02 09:11:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-02 09:11:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-02 09:11:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-02 09:11:59,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-02 09:11:59,560 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-02 09:11:59,708 INFO L244 CfgBuilder]: Building ICFG [2024-02-02 09:11:59,710 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-02 09:12:00,096 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-02 09:12:00,096 INFO L293 CfgBuilder]: Performing block encoding [2024-02-02 09:12:00,243 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-02 09:12:00,243 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-02-02 09:12:00,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:12:00 BoogieIcfgContainer [2024-02-02 09:12:00,244 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-02 09:12:00,246 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-02 09:12:00,246 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-02 09:12:00,249 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-02 09:12:00,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:11:57" (1/4) ... [2024-02-02 09:12:00,250 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@beae586 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:12:00, skipping insertion in model container [2024-02-02 09:12:00,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:11:58" (2/4) ... [2024-02-02 09:12:00,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@beae586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:12:00, skipping insertion in model container [2024-02-02 09:12:00,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:59" (3/4) ... [2024-02-02 09:12:00,253 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@beae586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:12:00, skipping insertion in model container [2024-02-02 09:12:00,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:12:00" (4/4) ... [2024-02-02 09:12:00,255 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt-pthread.i [2024-02-02 09:12:00,273 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-02 09:12:00,273 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2024-02-02 09:12:00,274 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-02 09:12:00,376 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-02 09:12:00,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 65 transitions, 134 flow [2024-02-02 09:12:00,470 INFO L124 PetriNetUnfolderBase]: 6/67 cut-off events. [2024-02-02 09:12:00,470 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:12:00,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 67 events. 6/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 122 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2024-02-02 09:12:00,474 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 65 transitions, 134 flow [2024-02-02 09:12:00,500 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 65 transitions, 134 flow [2024-02-02 09:12:00,514 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:12:00,519 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;@5efceab2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:12:00,520 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-02-02 09:12:00,523 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:12:00,523 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2024-02-02 09:12:00,523 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:12:00,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:00,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-02 09:12:00,525 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-02 09:12:00,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:00,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1317551148, now seen corresponding path program 1 times [2024-02-02 09:12:00,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:00,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638815026] [2024-02-02 09:12:00,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:00,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:00,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:00,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:00,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638815026] [2024-02-02 09:12:00,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638815026] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:12:00,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:12:00,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:12:00,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40120567] [2024-02-02 09:12:00,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:12:00,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:12:00,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:00,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:12:00,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:12:00,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 65 [2024-02-02 09:12:00,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 65 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:00,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:00,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 65 [2024-02-02 09:12:00,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:00,982 INFO L124 PetriNetUnfolderBase]: 39/198 cut-off events. [2024-02-02 09:12:00,982 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:12:00,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 198 events. 39/198 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 729 event pairs, 26 based on Foata normal form. 3/160 useless extension candidates. Maximal degree in co-relation 263. Up to 79 conditions per place. [2024-02-02 09:12:00,987 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 20 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-02-02 09:12:00,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 64 transitions, 176 flow [2024-02-02 09:12:00,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:12:00,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:12:00,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2024-02-02 09:12:00,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7743589743589744 [2024-02-02 09:12:01,000 INFO L175 Difference]: Start difference. First operand has 62 places, 65 transitions, 134 flow. Second operand 3 states and 151 transitions. [2024-02-02 09:12:01,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 64 transitions, 176 flow [2024-02-02 09:12:01,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 64 transitions, 176 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-02 09:12:01,008 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 142 flow [2024-02-02 09:12:01,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-02-02 09:12:01,013 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 2 predicate places. [2024-02-02 09:12:01,014 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 142 flow [2024-02-02 09:12:01,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:01,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:01,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:12:01,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-02 09:12:01,015 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-02 09:12:01,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:01,016 INFO L85 PathProgramCache]: Analyzing trace with hash -2102313890, now seen corresponding path program 1 times [2024-02-02 09:12:01,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:01,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098672388] [2024-02-02 09:12:01,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:01,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:01,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:01,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:01,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:01,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098672388] [2024-02-02 09:12:01,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098672388] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-02 09:12:01,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776199069] [2024-02-02 09:12:01,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:01,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:12:01,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:12:01,142 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-02 09:12:01,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-02 09:12:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:01,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2024-02-02 09:12:01,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-02 09:12:01,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:01,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-02 09:12:01,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:01,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776199069] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-02 09:12:01,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-02 09:12:01,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-02-02 09:12:01,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807242962] [2024-02-02 09:12:01,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-02 09:12:01,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:12:01,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:01,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:12:01,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:12:01,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 65 [2024-02-02 09:12:01,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 43.333333333333336) internal successors, (260), 6 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:01,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:01,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 65 [2024-02-02 09:12:01,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:01,401 INFO L124 PetriNetUnfolderBase]: 39/201 cut-off events. [2024-02-02 09:12:01,402 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:12:01,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 201 events. 39/201 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 729 event pairs, 26 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 286. Up to 79 conditions per place. [2024-02-02 09:12:01,405 INFO L140 encePairwiseOnDemand]: 62/65 looper letters, 20 selfloop transitions, 5 changer transitions 0/67 dead transitions. [2024-02-02 09:12:01,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 204 flow [2024-02-02 09:12:01,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:12:01,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:12:01,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 280 transitions. [2024-02-02 09:12:01,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.717948717948718 [2024-02-02 09:12:01,415 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 142 flow. Second operand 6 states and 280 transitions. [2024-02-02 09:12:01,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 204 flow [2024-02-02 09:12:01,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 67 transitions, 200 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-02-02 09:12:01,418 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 174 flow [2024-02-02 09:12:01,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=174, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2024-02-02 09:12:01,419 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 9 predicate places. [2024-02-02 09:12:01,419 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 174 flow [2024-02-02 09:12:01,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.333333333333336) internal successors, (260), 6 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:01,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:01,419 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2024-02-02 09:12:01,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-02 09:12:01,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:12:01,634 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-02 09:12:01,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:01,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1864386388, now seen corresponding path program 2 times [2024-02-02 09:12:01,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:01,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64839548] [2024-02-02 09:12:01,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:01,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:01,790 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:01,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:01,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64839548] [2024-02-02 09:12:01,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64839548] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-02 09:12:01,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892294264] [2024-02-02 09:12:01,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-02 09:12:01,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:12:01,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:12:01,796 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-02 09:12:01,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-02 09:12:01,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-02 09:12:01,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-02 09:12:01,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-02 09:12:01,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-02 09:12:01,912 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-02-02 09:12:01,913 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-02 09:12:01,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892294264] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:12:01,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-02 09:12:01,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-02-02 09:12:01,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689397169] [2024-02-02 09:12:01,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:12:01,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:12:01,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:01,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:12:01,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:12:01,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 65 [2024-02-02 09:12:01,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:01,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:01,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 65 [2024-02-02 09:12:01,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:02,064 INFO L124 PetriNetUnfolderBase]: 41/199 cut-off events. [2024-02-02 09:12:02,065 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-02 09:12:02,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 199 events. 41/199 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 711 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 280. Up to 76 conditions per place. [2024-02-02 09:12:02,067 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 27 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2024-02-02 09:12:02,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 67 transitions, 232 flow [2024-02-02 09:12:02,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:12:02,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:12:02,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 180 transitions. [2024-02-02 09:12:02,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2024-02-02 09:12:02,069 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 174 flow. Second operand 4 states and 180 transitions. [2024-02-02 09:12:02,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 67 transitions, 232 flow [2024-02-02 09:12:02,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 218 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-02-02 09:12:02,072 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 158 flow [2024-02-02 09:12:02,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2024-02-02 09:12:02,073 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 8 predicate places. [2024-02-02 09:12:02,073 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 158 flow [2024-02-02 09:12:02,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:02,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:02,073 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2024-02-02 09:12:02,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-02 09:12:02,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-02-02 09:12:02,288 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-02 09:12:02,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:02,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1961443790, now seen corresponding path program 1 times [2024-02-02 09:12:02,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:02,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923586520] [2024-02-02 09:12:02,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:02,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:02,405 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-02 09:12:02,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:02,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923586520] [2024-02-02 09:12:02,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923586520] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-02 09:12:02,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173413769] [2024-02-02 09:12:02,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:02,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:12:02,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:12:02,408 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-02 09:12:02,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-02 09:12:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:02,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-02 09:12:02,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-02 09:12:02,512 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-02 09:12:02,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-02 09:12:02,549 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-02 09:12:02,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173413769] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-02 09:12:02,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-02 09:12:02,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2024-02-02 09:12:02,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727539841] [2024-02-02 09:12:02,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-02 09:12:02,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:12:02,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:02,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:12:02,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:12:02,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 65 [2024-02-02 09:12:02,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 158 flow. Second operand has 8 states, 8 states have (on average 43.5) internal successors, (348), 8 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:02,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:02,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 65 [2024-02-02 09:12:02,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:02,638 INFO L124 PetriNetUnfolderBase]: 39/196 cut-off events. [2024-02-02 09:12:02,638 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-02-02 09:12:02,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 196 events. 39/196 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 696 event pairs, 26 based on Foata normal form. 2/159 useless extension candidates. Maximal degree in co-relation 272. Up to 79 conditions per place. [2024-02-02 09:12:02,641 INFO L140 encePairwiseOnDemand]: 62/65 looper letters, 20 selfloop transitions, 7 changer transitions 0/66 dead transitions. [2024-02-02 09:12:02,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 66 transitions, 224 flow [2024-02-02 09:12:02,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:12:02,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:12:02,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 365 transitions. [2024-02-02 09:12:02,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7019230769230769 [2024-02-02 09:12:02,643 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 158 flow. Second operand 8 states and 365 transitions. [2024-02-02 09:12:02,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 66 transitions, 224 flow [2024-02-02 09:12:02,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 66 transitions, 221 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:12:02,647 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 191 flow [2024-02-02 09:12:02,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=191, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2024-02-02 09:12:02,649 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 15 predicate places. [2024-02-02 09:12:02,649 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 191 flow [2024-02-02 09:12:02,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 43.5) internal successors, (348), 8 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:02,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:02,650 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 2, 1, 1, 1, 1, 1] [2024-02-02 09:12:02,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-02 09:12:02,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:12:02,865 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-02 09:12:02,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:02,865 INFO L85 PathProgramCache]: Analyzing trace with hash -465526798, now seen corresponding path program 2 times [2024-02-02 09:12:02,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:02,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349097309] [2024-02-02 09:12:02,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:02,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:12:02,887 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-02 09:12:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:12:02,921 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-02 09:12:02,921 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-02 09:12:02,922 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (38 of 39 remaining) [2024-02-02 09:12:02,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 39 remaining) [2024-02-02 09:12:02,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 39 remaining) [2024-02-02 09:12:02,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 39 remaining) [2024-02-02 09:12:02,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 39 remaining) [2024-02-02 09:12:02,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 39 remaining) [2024-02-02 09:12:02,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 39 remaining) [2024-02-02 09:12:02,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 39 remaining) [2024-02-02 09:12:02,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 39 remaining) [2024-02-02 09:12:02,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 39 remaining) [2024-02-02 09:12:02,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 39 remaining) [2024-02-02 09:12:02,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 39 remaining) [2024-02-02 09:12:02,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONERROR_FUNCTION (26 of 39 remaining) [2024-02-02 09:12:02,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 39 remaining) [2024-02-02 09:12:02,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 39 remaining) [2024-02-02 09:12:02,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 39 remaining) [2024-02-02 09:12:02,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 39 remaining) [2024-02-02 09:12:02,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 39 remaining) [2024-02-02 09:12:02,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 39 remaining) [2024-02-02 09:12:02,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 39 remaining) [2024-02-02 09:12:02,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 39 remaining) [2024-02-02 09:12:02,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 39 remaining) [2024-02-02 09:12:02,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 39 remaining) [2024-02-02 09:12:02,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 39 remaining) [2024-02-02 09:12:02,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 39 remaining) [2024-02-02 09:12:02,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 39 remaining) [2024-02-02 09:12:02,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 39 remaining) [2024-02-02 09:12:02,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 39 remaining) [2024-02-02 09:12:02,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 39 remaining) [2024-02-02 09:12:02,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 39 remaining) [2024-02-02 09:12:02,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 39 remaining) [2024-02-02 09:12:02,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONERROR_FUNCTION (7 of 39 remaining) [2024-02-02 09:12:02,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 39 remaining) [2024-02-02 09:12:02,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 39 remaining) [2024-02-02 09:12:02,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 39 remaining) [2024-02-02 09:12:02,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 39 remaining) [2024-02-02 09:12:02,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 39 remaining) [2024-02-02 09:12:02,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 39 remaining) [2024-02-02 09:12:02,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 39 remaining) [2024-02-02 09:12:02,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-02 09:12:02,939 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1] [2024-02-02 09:12:02,941 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-02 09:12:02,941 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-02-02 09:12:03,039 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-02 09:12:03,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 123 transitions, 256 flow [2024-02-02 09:12:03,062 INFO L124 PetriNetUnfolderBase]: 11/128 cut-off events. [2024-02-02 09:12:03,062 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-02 09:12:03,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 128 events. 11/128 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 434 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 117. Up to 3 conditions per place. [2024-02-02 09:12:03,064 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 123 transitions, 256 flow [2024-02-02 09:12:03,065 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 123 transitions, 256 flow [2024-02-02 09:12:03,067 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:12:03,067 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;@5efceab2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:12:03,067 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2024-02-02 09:12:03,069 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:12:03,069 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2024-02-02 09:12:03,069 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:12:03,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:03,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-02 09:12:03,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-02 09:12:03,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:03,070 INFO L85 PathProgramCache]: Analyzing trace with hash 661405541, now seen corresponding path program 1 times [2024-02-02 09:12:03,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:03,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905553958] [2024-02-02 09:12:03,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:03,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:03,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:03,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:03,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905553958] [2024-02-02 09:12:03,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905553958] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:12:03,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:12:03,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:12:03,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632718146] [2024-02-02 09:12:03,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:12:03,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:12:03,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:03,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:12:03,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:12:03,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 123 [2024-02-02 09:12:03,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 123 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:03,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:03,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 123 [2024-02-02 09:12:03,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:03,660 INFO L124 PetriNetUnfolderBase]: 1353/3986 cut-off events. [2024-02-02 09:12:03,660 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-02-02 09:12:03,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6003 conditions, 3986 events. 1353/3986 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 34269 event pairs, 1064 based on Foata normal form. 111/3319 useless extension candidates. Maximal degree in co-relation 5302. Up to 1969 conditions per place. [2024-02-02 09:12:03,689 INFO L140 encePairwiseOnDemand]: 117/123 looper letters, 36 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2024-02-02 09:12:03,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 121 transitions, 328 flow [2024-02-02 09:12:03,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:12:03,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:12:03,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 291 transitions. [2024-02-02 09:12:03,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7886178861788617 [2024-02-02 09:12:03,692 INFO L175 Difference]: Start difference. First operand has 117 places, 123 transitions, 256 flow. Second operand 3 states and 291 transitions. [2024-02-02 09:12:03,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 121 transitions, 328 flow [2024-02-02 09:12:03,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 121 transitions, 328 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-02 09:12:03,696 INFO L231 Difference]: Finished difference. Result has 119 places, 121 transitions, 262 flow [2024-02-02 09:12:03,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=119, PETRI_TRANSITIONS=121} [2024-02-02 09:12:03,699 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 2 predicate places. [2024-02-02 09:12:03,699 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 121 transitions, 262 flow [2024-02-02 09:12:03,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:03,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:03,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:12:03,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-02 09:12:03,700 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-02 09:12:03,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:03,701 INFO L85 PathProgramCache]: Analyzing trace with hash -969689134, now seen corresponding path program 1 times [2024-02-02 09:12:03,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:03,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23601862] [2024-02-02 09:12:03,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:03,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:03,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:03,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:03,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23601862] [2024-02-02 09:12:03,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23601862] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-02 09:12:03,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246713917] [2024-02-02 09:12:03,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:03,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:12:03,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:12:03,749 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-02 09:12:03,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-02 09:12:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:03,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2024-02-02 09:12:03,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-02 09:12:03,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:03,838 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-02 09:12:03,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:03,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246713917] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-02 09:12:03,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-02 09:12:03,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-02-02 09:12:03,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74365772] [2024-02-02 09:12:03,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-02 09:12:03,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:12:03,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:03,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:12:03,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:12:03,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 123 [2024-02-02 09:12:03,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 121 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:03,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:03,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 123 [2024-02-02 09:12:03,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:04,343 INFO L124 PetriNetUnfolderBase]: 1353/3989 cut-off events. [2024-02-02 09:12:04,343 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-02-02 09:12:04,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6019 conditions, 3989 events. 1353/3989 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 34267 event pairs, 1064 based on Foata normal form. 0/3211 useless extension candidates. Maximal degree in co-relation 6006. Up to 1969 conditions per place. [2024-02-02 09:12:04,372 INFO L140 encePairwiseOnDemand]: 120/123 looper letters, 36 selfloop transitions, 5 changer transitions 0/124 dead transitions. [2024-02-02 09:12:04,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 124 transitions, 356 flow [2024-02-02 09:12:04,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:12:04,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:12:04,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 542 transitions. [2024-02-02 09:12:04,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7344173441734417 [2024-02-02 09:12:04,375 INFO L175 Difference]: Start difference. First operand has 119 places, 121 transitions, 262 flow. Second operand 6 states and 542 transitions. [2024-02-02 09:12:04,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 124 transitions, 356 flow [2024-02-02 09:12:04,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 124 transitions, 352 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-02-02 09:12:04,380 INFO L231 Difference]: Finished difference. Result has 126 places, 124 transitions, 294 flow [2024-02-02 09:12:04,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=126, PETRI_TRANSITIONS=124} [2024-02-02 09:12:04,382 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 9 predicate places. [2024-02-02 09:12:04,382 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 124 transitions, 294 flow [2024-02-02 09:12:04,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:04,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:04,383 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2024-02-02 09:12:04,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-02 09:12:04,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:12:04,598 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-02 09:12:04,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:04,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1505587877, now seen corresponding path program 2 times [2024-02-02 09:12:04,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:04,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848870610] [2024-02-02 09:12:04,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:04,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:04,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:04,711 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:04,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:04,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848870610] [2024-02-02 09:12:04,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848870610] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-02 09:12:04,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489066815] [2024-02-02 09:12:04,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-02 09:12:04,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:12:04,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:12:04,714 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-02 09:12:04,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-02 09:12:04,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-02 09:12:04,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-02 09:12:04,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-02 09:12:04,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-02 09:12:04,824 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-02-02 09:12:04,825 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-02 09:12:04,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489066815] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:12:04,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-02 09:12:04,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-02-02 09:12:04,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395573117] [2024-02-02 09:12:04,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:12:04,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:12:04,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:04,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:12:04,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:12:04,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 123 [2024-02-02 09:12:04,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 124 transitions, 294 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:04,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:04,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 123 [2024-02-02 09:12:04,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:05,387 INFO L124 PetriNetUnfolderBase]: 1441/4123 cut-off events. [2024-02-02 09:12:05,387 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-02-02 09:12:05,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6296 conditions, 4123 events. 1441/4123 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 35078 event pairs, 104 based on Foata normal form. 0/3369 useless extension candidates. Maximal degree in co-relation 6261. Up to 2014 conditions per place. [2024-02-02 09:12:05,421 INFO L140 encePairwiseOnDemand]: 118/123 looper letters, 59 selfloop transitions, 2 changer transitions 0/140 dead transitions. [2024-02-02 09:12:05,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 140 transitions, 453 flow [2024-02-02 09:12:05,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:12:05,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:12:05,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2024-02-02 09:12:05,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7642276422764228 [2024-02-02 09:12:05,424 INFO L175 Difference]: Start difference. First operand has 126 places, 124 transitions, 294 flow. Second operand 4 states and 376 transitions. [2024-02-02 09:12:05,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 140 transitions, 453 flow [2024-02-02 09:12:05,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 140 transitions, 439 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-02-02 09:12:05,430 INFO L231 Difference]: Finished difference. Result has 125 places, 121 transitions, 278 flow [2024-02-02 09:12:05,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=278, PETRI_PLACES=125, PETRI_TRANSITIONS=121} [2024-02-02 09:12:05,432 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 8 predicate places. [2024-02-02 09:12:05,432 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 121 transitions, 278 flow [2024-02-02 09:12:05,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:05,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:05,433 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:12:05,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-02-02 09:12:05,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:12:05,651 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-02 09:12:05,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:05,652 INFO L85 PathProgramCache]: Analyzing trace with hash -571415509, now seen corresponding path program 1 times [2024-02-02 09:12:05,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:05,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912410623] [2024-02-02 09:12:05,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:05,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:05,718 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:05,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:12:05,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912410623] [2024-02-02 09:12:05,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912410623] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-02 09:12:05,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465975002] [2024-02-02 09:12:05,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:05,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:12:05,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:12:05,721 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-02 09:12:05,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-02-02 09:12:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:12:05,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-02 09:12:05,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-02 09:12:05,826 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:05,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-02 09:12:05,870 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:12:05,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465975002] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-02 09:12:05,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-02 09:12:05,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2024-02-02 09:12:05,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058424866] [2024-02-02 09:12:05,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-02 09:12:05,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:12:05,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:12:05,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:12:05,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:12:05,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 123 [2024-02-02 09:12:05,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 121 transitions, 278 flow. Second operand has 8 states, 8 states have (on average 84.5) internal successors, (676), 8 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:05,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:12:05,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 123 [2024-02-02 09:12:05,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:12:06,331 INFO L124 PetriNetUnfolderBase]: 1353/3942 cut-off events. [2024-02-02 09:12:06,332 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-02-02 09:12:06,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5987 conditions, 3942 events. 1353/3942 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 33690 event pairs, 1064 based on Foata normal form. 2/3166 useless extension candidates. Maximal degree in co-relation 5950. Up to 1969 conditions per place. [2024-02-02 09:12:06,361 INFO L140 encePairwiseOnDemand]: 120/123 looper letters, 36 selfloop transitions, 7 changer transitions 0/123 dead transitions. [2024-02-02 09:12:06,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 123 transitions, 376 flow [2024-02-02 09:12:06,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:12:06,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:12:06,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 709 transitions. [2024-02-02 09:12:06,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7205284552845529 [2024-02-02 09:12:06,365 INFO L175 Difference]: Start difference. First operand has 125 places, 121 transitions, 278 flow. Second operand 8 states and 709 transitions. [2024-02-02 09:12:06,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 123 transitions, 376 flow [2024-02-02 09:12:06,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 123 transitions, 373 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:12:06,368 INFO L231 Difference]: Finished difference. Result has 132 places, 123 transitions, 311 flow [2024-02-02 09:12:06,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=311, PETRI_PLACES=132, PETRI_TRANSITIONS=123} [2024-02-02 09:12:06,370 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 15 predicate places. [2024-02-02 09:12:06,370 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 123 transitions, 311 flow [2024-02-02 09:12:06,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 84.5) internal successors, (676), 8 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:12:06,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:12:06,371 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:12:06,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-02-02 09:12:06,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:12:06,587 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-02 09:12:06,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:12:06,587 INFO L85 PathProgramCache]: Analyzing trace with hash -2107024757, now seen corresponding path program 2 times [2024-02-02 09:12:06,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:12:06,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621555103] [2024-02-02 09:12:06,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:12:06,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:12:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:12:06,615 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-02 09:12:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:12:06,636 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-02 09:12:06,638 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-02 09:12:06,639 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 58 remaining) [2024-02-02 09:12:06,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 58 remaining) [2024-02-02 09:12:06,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 58 remaining) [2024-02-02 09:12:06,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 58 remaining) [2024-02-02 09:12:06,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 58 remaining) [2024-02-02 09:12:06,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 58 remaining) [2024-02-02 09:12:06,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 58 remaining) [2024-02-02 09:12:06,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 58 remaining) [2024-02-02 09:12:06,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 58 remaining) [2024-02-02 09:12:06,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 58 remaining) [2024-02-02 09:12:06,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 58 remaining) [2024-02-02 09:12:06,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 58 remaining) [2024-02-02 09:12:06,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONERROR_FUNCTION (45 of 58 remaining) [2024-02-02 09:12:06,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 58 remaining) [2024-02-02 09:12:06,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 58 remaining) [2024-02-02 09:12:06,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 58 remaining) [2024-02-02 09:12:06,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 58 remaining) [2024-02-02 09:12:06,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 58 remaining) [2024-02-02 09:12:06,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 58 remaining) [2024-02-02 09:12:06,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 58 remaining) [2024-02-02 09:12:06,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 58 remaining) [2024-02-02 09:12:06,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 58 remaining) [2024-02-02 09:12:06,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 58 remaining) [2024-02-02 09:12:06,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 58 remaining) [2024-02-02 09:12:06,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 58 remaining) [2024-02-02 09:12:06,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 58 remaining) [2024-02-02 09:12:06,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 58 remaining) [2024-02-02 09:12:06,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 58 remaining) [2024-02-02 09:12:06,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 58 remaining) [2024-02-02 09:12:06,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 58 remaining) [2024-02-02 09:12:06,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 58 remaining) [2024-02-02 09:12:06,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 58 remaining) [2024-02-02 09:12:06,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONERROR_FUNCTION (25 of 58 remaining) [2024-02-02 09:12:06,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 58 remaining) [2024-02-02 09:12:06,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 58 remaining) [2024-02-02 09:12:06,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 58 remaining) [2024-02-02 09:12:06,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 58 remaining) [2024-02-02 09:12:06,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 58 remaining) [2024-02-02 09:12:06,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 58 remaining) [2024-02-02 09:12:06,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 58 remaining) [2024-02-02 09:12:06,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 58 remaining) [2024-02-02 09:12:06,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 58 remaining) [2024-02-02 09:12:06,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 58 remaining) [2024-02-02 09:12:06,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 58 remaining) [2024-02-02 09:12:06,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 58 remaining) [2024-02-02 09:12:06,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 58 remaining) [2024-02-02 09:12:06,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 58 remaining) [2024-02-02 09:12:06,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 58 remaining) [2024-02-02 09:12:06,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 58 remaining) [2024-02-02 09:12:06,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 58 remaining) [2024-02-02 09:12:06,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONERROR_FUNCTION (7 of 58 remaining) [2024-02-02 09:12:06,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 58 remaining) [2024-02-02 09:12:06,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 58 remaining) [2024-02-02 09:12:06,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 58 remaining) [2024-02-02 09:12:06,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 58 remaining) [2024-02-02 09:12:06,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 58 remaining) [2024-02-02 09:12:06,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 58 remaining) [2024-02-02 09:12:06,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 58 remaining) [2024-02-02 09:12:06,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-02 09:12:06,650 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1] [2024-02-02 09:12:06,656 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2024-02-02 09:12:06,656 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-02 09:12:06,676 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-02-02 09:12:06,686 INFO L503 ceAbstractionStarter]: Automizer considered 18 witness invariants [2024-02-02 09:12:06,686 INFO L504 ceAbstractionStarter]: WitnessConsidered=18 [2024-02-02 09:12:06,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 09:12:06 BasicIcfg [2024-02-02 09:12:06,688 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-02 09:12:06,689 INFO L158 Benchmark]: Toolchain (without parser) took 8150.52ms. Allocated memory was 184.5MB in the beginning and 396.4MB in the end (delta: 211.8MB). Free memory was 106.3MB in the beginning and 178.6MB in the end (delta: -72.3MB). Peak memory consumption was 141.6MB. Max. memory is 16.1GB. [2024-02-02 09:12:06,689 INFO L158 Benchmark]: Witness Parser took 0.19ms. Allocated memory is still 184.5MB. Free memory is still 141.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:12:06,689 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 184.5MB. Free memory is still 153.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:12:06,689 INFO L158 Benchmark]: CACSL2BoogieTranslator took 817.31ms. Allocated memory is still 184.5MB. Free memory was 106.1MB in the beginning and 140.5MB in the end (delta: -34.4MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. [2024-02-02 09:12:06,689 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.19ms. Allocated memory is still 184.5MB. Free memory was 140.5MB in the beginning and 137.2MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-02 09:12:06,690 INFO L158 Benchmark]: Boogie Preprocessor took 53.44ms. Allocated memory is still 184.5MB. Free memory was 137.2MB in the beginning and 134.2MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-02 09:12:06,690 INFO L158 Benchmark]: RCFGBuilder took 766.82ms. Allocated memory is still 184.5MB. Free memory was 134.2MB in the beginning and 86.0MB in the end (delta: 48.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2024-02-02 09:12:06,690 INFO L158 Benchmark]: TraceAbstraction took 6442.34ms. Allocated memory was 184.5MB in the beginning and 396.4MB in the end (delta: 211.8MB). Free memory was 84.8MB in the beginning and 178.6MB in the end (delta: -93.8MB). Peak memory consumption was 120.0MB. Max. memory is 16.1GB. [2024-02-02 09:12:06,692 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.19ms. Allocated memory is still 184.5MB. Free memory is still 141.3MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.17ms. Allocated memory is still 184.5MB. Free memory is still 153.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 817.31ms. Allocated memory is still 184.5MB. Free memory was 106.1MB in the beginning and 140.5MB in the end (delta: -34.4MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.19ms. Allocated memory is still 184.5MB. Free memory was 140.5MB in the beginning and 137.2MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.44ms. Allocated memory is still 184.5MB. Free memory was 137.2MB in the beginning and 134.2MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 766.82ms. Allocated memory is still 184.5MB. Free memory was 134.2MB in the beginning and 86.0MB in the end (delta: 48.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * TraceAbstraction took 6442.34ms. Allocated memory was 184.5MB in the beginning and 396.4MB in the end (delta: 211.8MB). Free memory was 84.8MB in the beginning and 178.6MB in the end (delta: -93.8MB). Peak memory consumption was 120.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 717]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L690] 0 volatile int max = 0x80000000; [L691] 0 pthread_mutex_t m = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L691] 0 pthread_mutex_t m = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L691] 0 pthread_mutex_t m = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L691] 0 pthread_mutex_t m = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L691] 0 pthread_mutex_t m = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L691] 0 pthread_mutex_t m = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L692] 0 int storage[2*3]; [L692] 0 int storage[2*3]; [L692] 0 int storage[2*3]; [L692] 0 int storage[2*3]; [L692] 0 int storage[2*3]; [L692] 0 int storage[2*3]; [L692] 0 int storage[2*3]; [L722] 0 int i = 0; VAL [i=0, m={3:0}, max=-2147483648, storage={4:0}] [L722] COND TRUE 0 i < 2*3 [L723] 0 storage[i] = __VERIFIER_nondet_int() [L722] 0 i++ VAL [i=1, m={3:0}, max=-2147483648, storage={4:0}] [L722] COND TRUE 0 i < 2*3 [L723] 0 storage[i] = __VERIFIER_nondet_int() [L722] 0 i++ VAL [i=2, m={3:0}, max=-2147483648, storage={4:0}] [L722] COND TRUE 0 i < 2*3 [L723] 0 storage[i] = __VERIFIER_nondet_int() [L722] 0 i++ VAL [i=3, m={3:0}, max=-2147483648, storage={4:0}] [L722] COND TRUE 0 i < 2*3 [L723] 0 storage[i] = __VERIFIER_nondet_int() [L722] 0 i++ VAL [i=4, m={3:0}, max=-2147483648, storage={4:0}] [L722] COND TRUE 0 i < 2*3 [L723] 0 storage[i] = __VERIFIER_nondet_int() [L722] 0 i++ VAL [i=5, m={3:0}, max=-2147483648, storage={4:0}] [L722] COND TRUE 0 i < 2*3 [L723] 0 storage[i] = __VERIFIER_nondet_int() [L722] 0 i++ VAL [i=6, m={3:0}, max=-2147483648, storage={4:0}] [L722] COND FALSE 0 !(i < 2*3) [L724] 0 pthread_t t; VAL [m={3:0}, max=-2147483648, storage={4:0}, t={5:0}] [L725] COND TRUE 0 1 [L725] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [m={3:0}, max=-2147483648, storage={4:0}, t={5:0}] [L716] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] [L716] 1 int offset=__VERIFIER_nondet_int(); [L717] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IdentifierExpression[offset],IntegerLiteral[2147483646]],BinaryExpression[COMPEQ,BinaryExpression[ARITHMOD,IdentifierExpression[offset],IntegerLiteral[2]],IntegerLiteral[0]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]]] VAL [arg={0:0}, arg={0:0}, m={3:0}, max=-2147483648, offset=-1, storage={4:0}] - UnprovableResult [Line: 716]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 696]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 697]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 706]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 697]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 710]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 725]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 113 locations, 39 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.5s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 51 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 198 IncrementalHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 9 mSDtfsCounter, 198 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=191occurred in iteration=4, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 75 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 137 SizeOfPredicates, 2 NumberOfNonLiveVariables, 329 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 16/59 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 166 locations, 58 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.6s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 82 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 74 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 387 IncrementalHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 4 mSDtfsCounter, 387 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=311occurred in iteration=4, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 75 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 137 SizeOfPredicates, 2 NumberOfNonLiveVariables, 328 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 10/53 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-02-02 09:12:06,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE