./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_60-invariant_racefree.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 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/goblint-regression/28-race_reach_60-invariant_racefree.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_60-invariant_racefree.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-958ec4d-m [2024-02-07 14:27:29,217 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:27:29,282 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:27:29,302 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:27:29,303 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:27:29,457 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:27:29,457 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:27:29,458 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:27:29,458 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:27:29,459 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:27:29,459 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:27:29,459 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:27:29,460 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:27:29,460 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:27:29,460 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:27:29,460 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:27:29,461 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:27:29,461 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:27:29,461 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:27:29,462 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:27:29,462 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:27:29,462 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:27:29,463 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:27:29,463 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:27:29,463 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:27:29,463 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:27:29,464 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:27:29,464 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:27:29,464 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:27:29,464 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:27:29,465 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:27:29,465 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:27:29,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:27:29,465 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:27:29,466 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:27:29,466 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:27:29,466 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:27:29,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:27:29,466 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:27:29,467 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:27:29,467 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:27:29,467 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:27:29,467 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:27:29,468 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:27:29,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:27:29,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:27:29,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:27:29,670 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:27:29,670 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:27:29,671 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2024-02-07 14:27:30,734 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:27:30,973 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:27:30,974 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2024-02-07 14:27:30,985 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c57d7d93f/dd48fe6bd3c04c4e91394a1df36434c5/FLAGbcd3720d0 [2024-02-07 14:27:31,001 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c57d7d93f/dd48fe6bd3c04c4e91394a1df36434c5 [2024-02-07 14:27:31,003 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:27:31,004 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:27:31,004 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_60-invariant_racefree.yml/witness.yml [2024-02-07 14:27:31,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:27:31,095 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:27:31,096 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:27:31,096 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:27:31,099 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:27:31,100 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:27:31" (1/2) ... [2024-02-07 14:27:31,101 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d3ef776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:31, skipping insertion in model container [2024-02-07 14:27:31,101 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:27:31" (1/2) ... [2024-02-07 14:27:31,102 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5680866a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:31, skipping insertion in model container [2024-02-07 14:27:31,102 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:27:31" (2/2) ... [2024-02-07 14:27:31,102 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d3ef776 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31, skipping insertion in model container [2024-02-07 14:27:31,103 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:27:31" (2/2) ... [2024-02-07 14:27:31,103 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:27:31,123 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:27:31,124 INFO L76 edCorrectnessWitness]: Location invariant before [L711-L711] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:27:31,125 INFO L76 edCorrectnessWitness]: Location invariant before [L713-L713] x == 0 [2024-02-07 14:27:31,125 INFO L76 edCorrectnessWitness]: Location invariant after [L714-L714] x == 0 [2024-02-07 14:27:31,125 INFO L76 edCorrectnessWitness]: Location invariant after [L713-L713] x == 0 [2024-02-07 14:27:31,125 INFO L76 edCorrectnessWitness]: Location invariant before [L713-L713] x == 1 [2024-02-07 14:27:31,125 INFO L76 edCorrectnessWitness]: Location invariant after [L716-L716] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:27:31,125 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] x == 0 [2024-02-07 14:27:31,125 INFO L76 edCorrectnessWitness]: Location invariant after [L702-L702] x == 0 [2024-02-07 14:27:31,125 INFO L76 edCorrectnessWitness]: Location invariant before [L716-L716] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:27:31,126 INFO L76 edCorrectnessWitness]: Location invariant after [L713-L713] x == 1 [2024-02-07 14:27:31,126 INFO L76 edCorrectnessWitness]: Location invariant after [L713-L713] x == 1 [2024-02-07 14:27:31,126 INFO L76 edCorrectnessWitness]: Location invariant before [L713-L713] x == 0 [2024-02-07 14:27:31,126 INFO L76 edCorrectnessWitness]: Location invariant before [L701-L701] x == 0 [2024-02-07 14:27:31,126 INFO L76 edCorrectnessWitness]: Location invariant after [L711-L711] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:27:31,126 INFO L76 edCorrectnessWitness]: Location invariant before [L713-L713] x == 1 [2024-02-07 14:27:31,126 INFO L76 edCorrectnessWitness]: Location invariant after [L713-L713] x == 0 [2024-02-07 14:27:31,127 INFO L76 edCorrectnessWitness]: Location invariant before [L714-L714] x == 0 [2024-02-07 14:27:31,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:27:31,398 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i[30176,30189] [2024-02-07 14:27:31,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:27:31,435 INFO L203 MainTranslator]: Completed pre-run [2024-02-07 14:27:31,472 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i[30176,30189] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:27:31,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:27:31,566 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:27:31,567 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31 WrapperNode [2024-02-07 14:27:31,567 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:27:31,568 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:27:31,568 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:27:31,568 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:27:31,573 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31" (1/1) ... [2024-02-07 14:27:31,587 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31" (1/1) ... [2024-02-07 14:27:31,606 INFO L138 Inliner]: procedures = 171, calls = 43, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 174 [2024-02-07 14:27:31,606 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:27:31,607 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:27:31,607 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:27:31,607 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:27:31,615 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31" (1/1) ... [2024-02-07 14:27:31,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31" (1/1) ... [2024-02-07 14:27:31,618 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31" (1/1) ... [2024-02-07 14:27:31,630 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 2, 5, 5]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 5]. The 1 writes are split as follows [0, 1, 0, 0]. [2024-02-07 14:27:31,631 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31" (1/1) ... [2024-02-07 14:27:31,631 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31" (1/1) ... [2024-02-07 14:27:31,638 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31" (1/1) ... [2024-02-07 14:27:31,641 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31" (1/1) ... [2024-02-07 14:27:31,643 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31" (1/1) ... [2024-02-07 14:27:31,644 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31" (1/1) ... [2024-02-07 14:27:31,646 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:27:31,647 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:27:31,647 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:27:31,647 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:27:31,648 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31" (1/1) ... [2024-02-07 14:27:31,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:27:31,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:27:31,671 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-07 14:27:31,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-07 14:27:31,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:27:31,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:27:31,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:27:31,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 14:27:31,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:27:31,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:27:31,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:27:31,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:27:31,706 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 14:27:31,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:27:31,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:27:31,706 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-07 14:27:31,706 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-07 14:27:31,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:27:31,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:27:31,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:27:31,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:27:31,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:27:31,719 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 14:27:31,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:27:31,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:27:31,721 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 14:27:31,814 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:27:31,816 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:27:32,039 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:27:32,040 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:27:32,166 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:27:32,166 INFO L320 CfgBuilder]: Removed 18 assume(true) statements. [2024-02-07 14:27:32,166 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:27:32 BoogieIcfgContainer [2024-02-07 14:27:32,166 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:27:32,168 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:27:32,168 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:27:32,170 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:27:32,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:27:31" (1/4) ... [2024-02-07 14:27:32,171 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d2d19a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:27:32, skipping insertion in model container [2024-02-07 14:27:32,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:27:31" (2/4) ... [2024-02-07 14:27:32,171 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d2d19a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:27:32, skipping insertion in model container [2024-02-07 14:27:32,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:31" (3/4) ... [2024-02-07 14:27:32,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d2d19a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:27:32, skipping insertion in model container [2024-02-07 14:27:32,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:27:32" (4/4) ... [2024-02-07 14:27:32,173 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2024-02-07 14:27:32,185 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:27:32,185 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2024-02-07 14:27:32,185 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:27:32,213 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-07 14:27:32,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 98 transitions, 203 flow [2024-02-07 14:27:32,295 INFO L124 PetriNetUnfolderBase]: 29/143 cut-off events. [2024-02-07 14:27:32,295 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 14:27:32,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 143 events. 29/143 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 617 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 91. Up to 6 conditions per place. [2024-02-07 14:27:32,299 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 98 transitions, 203 flow [2024-02-07 14:27:32,303 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 97 transitions, 201 flow [2024-02-07 14:27:32,318 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:27:32,327 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;@2d17c732, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:27:32,327 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-02-07 14:27:32,332 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:27:32,332 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-02-07 14:27:32,332 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:27:32,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:32,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:27:32,333 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 12 more)] === [2024-02-07 14:27:32,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:32,338 INFO L85 PathProgramCache]: Analyzing trace with hash 448317600, now seen corresponding path program 1 times [2024-02-07 14:27:32,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:32,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934045677] [2024-02-07 14:27:32,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:32,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:32,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:27:32,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:32,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934045677] [2024-02-07 14:27:32,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934045677] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:32,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:32,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:27:32,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825179420] [2024-02-07 14:27:32,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:32,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:27:32,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:32,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:27:32,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:27:32,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 98 [2024-02-07 14:27:32,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 97 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:32,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:32,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 98 [2024-02-07 14:27:32,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:32,814 INFO L124 PetriNetUnfolderBase]: 43/139 cut-off events. [2024-02-07 14:27:32,815 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:27:32,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 139 events. 43/139 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 561 event pairs, 0 based on Foata normal form. 23/152 useless extension candidates. Maximal degree in co-relation 222. Up to 87 conditions per place. [2024-02-07 14:27:32,817 INFO L140 encePairwiseOnDemand]: 85/98 looper letters, 32 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2024-02-07 14:27:32,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 182 flow [2024-02-07 14:27:32,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:27:32,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:27:32,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 211 transitions. [2024-02-07 14:27:32,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5382653061224489 [2024-02-07 14:27:32,828 INFO L175 Difference]: Start difference. First operand has 81 places, 97 transitions, 201 flow. Second operand 4 states and 211 transitions. [2024-02-07 14:27:32,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 182 flow [2024-02-07 14:27:32,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 182 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:27:32,832 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 88 flow [2024-02-07 14:27:32,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-02-07 14:27:32,836 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -36 predicate places. [2024-02-07 14:27:32,836 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 88 flow [2024-02-07 14:27:32,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:32,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:32,837 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-02-07 14:27:32,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:27:32,837 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 12 more)] === [2024-02-07 14:27:32,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:32,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1336499787, now seen corresponding path program 1 times [2024-02-07 14:27:32,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:32,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256450288] [2024-02-07 14:27:32,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:32,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:27:32,856 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 14:27:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:27:32,879 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 14:27:32,879 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 14:27:32,880 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2024-02-07 14:27:32,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 15 remaining) [2024-02-07 14:27:32,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 15 remaining) [2024-02-07 14:27:32,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 15 remaining) [2024-02-07 14:27:32,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 15 remaining) [2024-02-07 14:27:32,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 15 remaining) [2024-02-07 14:27:32,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (8 of 15 remaining) [2024-02-07 14:27:32,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 15 remaining) [2024-02-07 14:27:32,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 15 remaining) [2024-02-07 14:27:32,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 15 remaining) [2024-02-07 14:27:32,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 15 remaining) [2024-02-07 14:27:32,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 15 remaining) [2024-02-07 14:27:32,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 15 remaining) [2024-02-07 14:27:32,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 15 remaining) [2024-02-07 14:27:32,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 15 remaining) [2024-02-07 14:27:32,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:27:32,885 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-02-07 14:27:32,886 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 14:27:32,886 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-02-07 14:27:32,905 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-07 14:27:32,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 143 transitions, 302 flow [2024-02-07 14:27:32,926 INFO L124 PetriNetUnfolderBase]: 50/246 cut-off events. [2024-02-07 14:27:32,927 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-07 14:27:32,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 246 events. 50/246 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1205 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 149. Up to 9 conditions per place. [2024-02-07 14:27:32,928 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 143 transitions, 302 flow [2024-02-07 14:27:32,930 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 143 transitions, 302 flow [2024-02-07 14:27:32,931 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:27:32,932 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;@2d17c732, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:27:32,932 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-02-07 14:27:32,934 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:27:32,934 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-02-07 14:27:32,934 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:27:32,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:32,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:27:32,934 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 15 more)] === [2024-02-07 14:27:32,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:32,935 INFO L85 PathProgramCache]: Analyzing trace with hash 584824538, now seen corresponding path program 1 times [2024-02-07 14:27:32,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:32,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340764428] [2024-02-07 14:27:32,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:32,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:32,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:27:32,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:32,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340764428] [2024-02-07 14:27:32,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340764428] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:32,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:32,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:27:32,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342649967] [2024-02-07 14:27:32,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:32,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:27:32,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:32,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:27:32,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:27:32,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 143 [2024-02-07 14:27:32,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 143 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:32,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:32,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 143 [2024-02-07 14:27:32,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:34,822 INFO L124 PetriNetUnfolderBase]: 9984/20286 cut-off events. [2024-02-07 14:27:34,823 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-02-07 14:27:34,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35564 conditions, 20286 events. 9984/20286 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 188009 event pairs, 4161 based on Foata normal form. 5468/24348 useless extension candidates. Maximal degree in co-relation 3074. Up to 14657 conditions per place. [2024-02-07 14:27:34,935 INFO L140 encePairwiseOnDemand]: 112/143 looper letters, 100 selfloop transitions, 3 changer transitions 0/162 dead transitions. [2024-02-07 14:27:34,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 162 transitions, 546 flow [2024-02-07 14:27:34,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:27:34,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:27:34,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 396 transitions. [2024-02-07 14:27:34,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2024-02-07 14:27:34,943 INFO L175 Difference]: Start difference. First operand has 117 places, 143 transitions, 302 flow. Second operand 4 states and 396 transitions. [2024-02-07 14:27:34,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 162 transitions, 546 flow [2024-02-07 14:27:34,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 162 transitions, 546 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:27:34,947 INFO L231 Difference]: Finished difference. Result has 122 places, 117 transitions, 266 flow [2024-02-07 14:27:34,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=266, PETRI_PLACES=122, PETRI_TRANSITIONS=117} [2024-02-07 14:27:34,948 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 5 predicate places. [2024-02-07 14:27:34,949 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 117 transitions, 266 flow [2024-02-07 14:27:34,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:34,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:34,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:27:34,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:27:34,950 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 15 more)] === [2024-02-07 14:27:34,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:34,950 INFO L85 PathProgramCache]: Analyzing trace with hash -622621091, now seen corresponding path program 1 times [2024-02-07 14:27:34,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:34,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867914350] [2024-02-07 14:27:34,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:34,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:34,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:27:34,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:34,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867914350] [2024-02-07 14:27:34,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867914350] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:34,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:34,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:27:34,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649382135] [2024-02-07 14:27:34,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:34,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:27:34,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:34,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:27:34,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:27:34,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 143 [2024-02-07 14:27:34,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 117 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:34,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:34,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 143 [2024-02-07 14:27:34,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:37,663 INFO L124 PetriNetUnfolderBase]: 18071/37425 cut-off events. [2024-02-07 14:27:37,664 INFO L125 PetriNetUnfolderBase]: For 546/546 co-relation queries the response was YES. [2024-02-07 14:27:37,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67067 conditions, 37425 events. 18071/37425 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 376179 event pairs, 8307 based on Foata normal form. 512/34539 useless extension candidates. Maximal degree in co-relation 57428. Up to 17121 conditions per place. [2024-02-07 14:27:37,845 INFO L140 encePairwiseOnDemand]: 118/143 looper letters, 102 selfloop transitions, 15 changer transitions 0/164 dead transitions. [2024-02-07 14:27:37,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 164 transitions, 600 flow [2024-02-07 14:27:37,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:27:37,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:27:37,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2024-02-07 14:27:37,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6247086247086248 [2024-02-07 14:27:37,847 INFO L175 Difference]: Start difference. First operand has 122 places, 117 transitions, 266 flow. Second operand 3 states and 268 transitions. [2024-02-07 14:27:37,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 164 transitions, 600 flow [2024-02-07 14:27:37,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 164 transitions, 598 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:27:37,853 INFO L231 Difference]: Finished difference. Result has 124 places, 128 transitions, 388 flow [2024-02-07 14:27:37,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=388, PETRI_PLACES=124, PETRI_TRANSITIONS=128} [2024-02-07 14:27:37,853 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 7 predicate places. [2024-02-07 14:27:37,854 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 128 transitions, 388 flow [2024-02-07 14:27:37,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:37,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:37,854 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-02-07 14:27:37,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 14:27:37,855 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 15 more)] === [2024-02-07 14:27:37,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:37,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1329349649, now seen corresponding path program 1 times [2024-02-07 14:27:37,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:37,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589773508] [2024-02-07 14:27:37,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:37,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:37,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:27:37,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:37,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589773508] [2024-02-07 14:27:37,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589773508] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:27:37,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918173030] [2024-02-07 14:27:37,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:37,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:27:37,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:27:37,952 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) [2024-02-07 14:27:37,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-07 14:27:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:38,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-07 14:27:38,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:27:38,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:27:38,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:27:38,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:27:38,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918173030] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:27:38,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:27:38,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-02-07 14:27:38,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343325141] [2024-02-07 14:27:38,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:27:38,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:27:38,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:38,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:27:38,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:27:38,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 143 [2024-02-07 14:27:38,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 128 transitions, 388 flow. Second operand has 5 states, 5 states have (on average 60.8) internal successors, (304), 5 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:38,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:38,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 143 [2024-02-07 14:27:38,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:38,189 INFO L124 PetriNetUnfolderBase]: 493/1246 cut-off events. [2024-02-07 14:27:38,189 INFO L125 PetriNetUnfolderBase]: For 475/476 co-relation queries the response was YES. [2024-02-07 14:27:38,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2366 conditions, 1246 events. 493/1246 cut-off events. For 475/476 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 8020 event pairs, 220 based on Foata normal form. 152/1323 useless extension candidates. Maximal degree in co-relation 2353. Up to 631 conditions per place. [2024-02-07 14:27:38,195 INFO L140 encePairwiseOnDemand]: 139/143 looper letters, 42 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2024-02-07 14:27:38,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 262 flow [2024-02-07 14:27:38,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:27:38,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:27:38,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 342 transitions. [2024-02-07 14:27:38,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783216783216783 [2024-02-07 14:27:38,196 INFO L175 Difference]: Start difference. First operand has 124 places, 128 transitions, 388 flow. Second operand 5 states and 342 transitions. [2024-02-07 14:27:38,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 262 flow [2024-02-07 14:27:38,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 66 transitions, 256 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-07 14:27:38,198 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 118 flow [2024-02-07 14:27:38,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-02-07 14:27:38,199 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -63 predicate places. [2024-02-07 14:27:38,199 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 118 flow [2024-02-07 14:27:38,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.8) internal successors, (304), 5 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:38,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:38,200 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-02-07 14:27:38,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-02-07 14:27:38,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:27:38,414 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 15 more)] === [2024-02-07 14:27:38,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:38,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1899746183, now seen corresponding path program 1 times [2024-02-07 14:27:38,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:38,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198703559] [2024-02-07 14:27:38,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:38,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:27:38,470 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 14:27:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:27:38,507 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 14:27:38,508 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 14:27:38,508 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-02-07 14:27:38,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 18 remaining) [2024-02-07 14:27:38,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 18 remaining) [2024-02-07 14:27:38,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 18 remaining) [2024-02-07 14:27:38,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 18 remaining) [2024-02-07 14:27:38,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 18 remaining) [2024-02-07 14:27:38,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (11 of 18 remaining) [2024-02-07 14:27:38,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 18 remaining) [2024-02-07 14:27:38,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 18 remaining) [2024-02-07 14:27:38,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 18 remaining) [2024-02-07 14:27:38,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 18 remaining) [2024-02-07 14:27:38,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (6 of 18 remaining) [2024-02-07 14:27:38,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 18 remaining) [2024-02-07 14:27:38,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 18 remaining) [2024-02-07 14:27:38,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 18 remaining) [2024-02-07 14:27:38,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 18 remaining) [2024-02-07 14:27:38,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 18 remaining) [2024-02-07 14:27:38,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 18 remaining) [2024-02-07 14:27:38,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:27:38,515 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-02-07 14:27:38,516 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 14:27:38,516 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-02-07 14:27:38,566 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-07 14:27:38,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 188 transitions, 403 flow [2024-02-07 14:27:38,625 INFO L124 PetriNetUnfolderBase]: 74/364 cut-off events. [2024-02-07 14:27:38,625 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-02-07 14:27:38,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 364 events. 74/364 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1907 event pairs, 1 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 259. Up to 12 conditions per place. [2024-02-07 14:27:38,632 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 188 transitions, 403 flow [2024-02-07 14:27:38,636 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 188 transitions, 403 flow [2024-02-07 14:27:38,657 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:27:38,661 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;@2d17c732, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:27:38,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-02-07 14:27:38,662 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:27:38,663 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-02-07 14:27:38,663 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:27:38,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:38,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:27:38,663 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 18 more)] === [2024-02-07 14:27:38,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:38,663 INFO L85 PathProgramCache]: Analyzing trace with hash 764275201, now seen corresponding path program 1 times [2024-02-07 14:27:38,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:38,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615690222] [2024-02-07 14:27:38,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:38,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:38,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:27:38,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:38,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615690222] [2024-02-07 14:27:38,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615690222] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:38,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:38,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:27:38,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651110660] [2024-02-07 14:27:38,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:38,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:27:38,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:38,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:27:38,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:27:38,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2024-02-07 14:27:38,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 188 transitions, 403 flow. Second operand has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:38,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:38,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2024-02-07 14:27:38,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:28:09,020 INFO L124 PetriNetUnfolderBase]: 240193/408024 cut-off events. [2024-02-07 14:28:09,020 INFO L125 PetriNetUnfolderBase]: For 3053/3053 co-relation queries the response was YES. [2024-02-07 14:28:10,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 732302 conditions, 408024 events. 240193/408024 cut-off events. For 3053/3053 co-relation queries the response was YES. Maximal size of possible extension queue 9363. Compared 4562713 event pairs, 150124 based on Foata normal form. 118380/501000 useless extension candidates. Maximal degree in co-relation 37767. Up to 322008 conditions per place. [2024-02-07 14:28:12,329 INFO L140 encePairwiseOnDemand]: 148/188 looper letters, 117 selfloop transitions, 3 changer transitions 0/199 dead transitions. [2024-02-07 14:28:12,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 199 transitions, 665 flow [2024-02-07 14:28:12,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:28:12,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:28:12,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 502 transitions. [2024-02-07 14:28:12,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6675531914893617 [2024-02-07 14:28:12,332 INFO L175 Difference]: Start difference. First operand has 153 places, 188 transitions, 403 flow. Second operand 4 states and 502 transitions. [2024-02-07 14:28:12,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 199 transitions, 665 flow [2024-02-07 14:28:12,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 199 transitions, 665 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:28:12,342 INFO L231 Difference]: Finished difference. Result has 158 places, 154 transitions, 353 flow [2024-02-07 14:28:12,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=353, PETRI_PLACES=158, PETRI_TRANSITIONS=154} [2024-02-07 14:28:12,346 INFO L281 CegarLoopForPetriNet]: 153 programPoint places, 5 predicate places. [2024-02-07 14:28:12,346 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 154 transitions, 353 flow [2024-02-07 14:28:12,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:28:12,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:28:12,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:28:12,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 14:28:12,347 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 18 more)] === [2024-02-07 14:28:12,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:28:12,347 INFO L85 PathProgramCache]: Analyzing trace with hash 33427652, now seen corresponding path program 1 times [2024-02-07 14:28:12,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:28:12,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843156321] [2024-02-07 14:28:12,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:28:12,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:28:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:28:12,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:28:12,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:28:12,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843156321] [2024-02-07 14:28:12,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843156321] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:28:12,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:28:12,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:28:12,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673910173] [2024-02-07 14:28:12,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:28:12,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:28:12,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:28:12,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:28:12,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:28:12,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 188 [2024-02-07 14:28:12,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 154 transitions, 353 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:28:12,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:28:12,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 188 [2024-02-07 14:28:12,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand