./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.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_11-ptr_racing.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7c74aec 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_11-ptr_racing.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_11-ptr_racing.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.fix-undeclared-acsl-variable-e7c74ae-m [2024-02-07 19:32:02,256 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:32:02,327 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:32:02,333 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:32:02,333 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:32:02,357 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:32:02,358 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:32:02,358 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:32:02,359 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:32:02,362 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:32:02,362 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:32:02,362 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:32:02,363 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:32:02,364 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:32:02,364 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:32:02,365 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:32:02,365 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:32:02,365 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:32:02,365 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:32:02,366 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:32:02,366 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:32:02,366 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:32:02,366 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:32:02,367 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:32:02,367 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:32:02,367 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:32:02,367 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:32:02,367 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:32:02,368 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:32:02,368 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:32:02,369 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:32:02,369 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:32:02,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:32:02,370 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:32:02,370 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:32:02,370 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:32:02,370 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:32:02,370 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:32:02,371 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:32:02,371 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:32:02,371 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:32:02,371 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:32:02,371 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:32:02,372 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:32:02,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:32:02,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:32:02,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:32:02,601 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:32:02,601 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:32:02,602 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i [2024-02-07 19:32:03,721 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:32:03,935 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:32:03,935 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i [2024-02-07 19:32:03,947 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d284dde11/ce43803839944ef7bf4b40d3d9ae0f67/FLAGde515b6e5 [2024-02-07 19:32:03,959 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d284dde11/ce43803839944ef7bf4b40d3d9ae0f67 [2024-02-07 19:32:03,962 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:32:03,963 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:32:03,964 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_11-ptr_racing.yml/witness.yml [2024-02-07 19:32:04,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:32:04,051 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:32:04,052 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:32:04,053 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:32:04,056 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:32:04,057 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:32:03" (1/2) ... [2024-02-07 19:32:04,058 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@543ec3a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:04, skipping insertion in model container [2024-02-07 19:32:04,059 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:32:03" (1/2) ... [2024-02-07 19:32:04,061 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@34d6804b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:04, skipping insertion in model container [2024-02-07 19:32:04,061 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:32:04" (2/2) ... [2024-02-07 19:32:04,062 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@543ec3a0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:32:04, skipping insertion in model container [2024-02-07 19:32:04,062 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:32:04" (2/2) ... [2024-02-07 19:32:04,062 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:32:04,109 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:32:04,110 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] p == & global [2024-02-07 19:32:04,111 INFO L76 edCorrectnessWitness]: Location invariant before [L712-L712] ((((((((((((((((((((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (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 [2024-02-07 19:32:04,111 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] p == & global [2024-02-07 19:32:04,111 INFO L76 edCorrectnessWitness]: Location invariant after [L703-L703] ((1 <= global) && (1 <= *p)) && (p == & global) [2024-02-07 19:32:04,111 INFO L76 edCorrectnessWitness]: Location invariant after [L710-L710] 0 <= global [2024-02-07 19:32:04,111 INFO L76 edCorrectnessWitness]: Location invariant after [L712-L712] ((((((((((((((((((((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (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 [2024-02-07 19:32:04,111 INFO L76 edCorrectnessWitness]: Location invariant before [L705-L705] p == & global [2024-02-07 19:32:04,112 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] (1 <= global) && (p == & global) [2024-02-07 19:32:04,112 INFO L76 edCorrectnessWitness]: Location invariant after [L708-L708] ((((((((((((((((((((((((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)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20 [2024-02-07 19:32:04,112 INFO L76 edCorrectnessWitness]: Location invariant before [L710-L710] 0 <= global [2024-02-07 19:32:04,112 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] ((0 <= global) && (0 <= *p)) && (p == & global) [2024-02-07 19:32:04,112 INFO L76 edCorrectnessWitness]: Location invariant after [L703-L703] (1 <= global) && (p == & global) [2024-02-07 19:32:04,112 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] ((0 <= global) && (global <= 2147483646)) && (p == & global) [2024-02-07 19:32:04,113 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] ((1 <= global) && (1 <= *p)) && (p == & global) [2024-02-07 19:32:04,113 INFO L76 edCorrectnessWitness]: Location invariant after [L703-L703] ((0 <= global) && (global <= 2147483646)) && (p == & global) [2024-02-07 19:32:04,113 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] (0 <= *p) && (p == & global) [2024-02-07 19:32:04,113 INFO L76 edCorrectnessWitness]: Location invariant before [L708-L708] ((((((((((((((((((((((((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)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20 [2024-02-07 19:32:04,113 INFO L76 edCorrectnessWitness]: Location invariant before [L704-L704] p == & global [2024-02-07 19:32:04,113 INFO L76 edCorrectnessWitness]: Location invariant after [L703-L703] ((0 <= global) && (0 <= *p)) && (p == & global) [2024-02-07 19:32:04,173 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:32:04,461 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_11-ptr_racing.i[30176,30189] [2024-02-07 19:32:04,483 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:32:04,495 INFO L206 MainTranslator]: Completed pre-run [2024-02-07 19:32:04,521 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_11-ptr_racing.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 Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 19:32:04,563 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:32:04,606 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:32:04,606 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:32:04 WrapperNode [2024-02-07 19:32:04,606 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:32:04,607 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:32:04,607 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:32:04,607 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:32:04,613 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 07:32:04" (1/1) ... [2024-02-07 19:32:04,623 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 07:32:04" (1/1) ... [2024-02-07 19:32:04,641 INFO L138 Inliner]: procedures = 171, calls = 57, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2024-02-07 19:32:04,642 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:32:04,643 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:32:04,643 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:32:04,643 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:32:04,652 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 07:32:04" (1/1) ... [2024-02-07 19:32:04,653 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 07:32:04" (1/1) ... [2024-02-07 19:32:04,657 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 07:32:04" (1/1) ... [2024-02-07 19:32:04,682 INFO L175 MemorySlicer]: Split 34 memory accesses to 6 slices as follows [2, 5, 2, 5, 5, 15]. 44 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 5, 0, 5, 5, 1]. The 3 writes are split as follows [0, 0, 1, 0, 0, 2]. [2024-02-07 19:32:04,683 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 07:32:04" (1/1) ... [2024-02-07 19:32:04,683 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 07:32:04" (1/1) ... [2024-02-07 19:32:04,690 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 07:32:04" (1/1) ... [2024-02-07 19:32:04,693 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 07:32:04" (1/1) ... [2024-02-07 19:32:04,695 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 07:32:04" (1/1) ... [2024-02-07 19:32:04,696 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 07:32:04" (1/1) ... [2024-02-07 19:32:04,699 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:32:04,700 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:32:04,700 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:32:04,700 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:32:04,704 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 07:32:04" (1/1) ... [2024-02-07 19:32:04,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:32:04,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:32:04,739 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 19:32:04,746 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 19:32:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 19:32:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 19:32:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 19:32:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 19:32:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 19:32:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-07 19:32:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:32:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:32:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:32:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 19:32:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 19:32:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-07 19:32:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 19:32:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:32:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:32:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-07 19:32:04,777 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-07 19:32:04,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:32:04,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:32:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:32:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:32:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 19:32:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 19:32:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-07 19:32:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 19:32:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:32:04,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:32:04,782 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 19:32:04,887 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:32:04,889 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:32:05,106 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:32:05,107 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:32:05,258 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:32:05,259 INFO L320 CfgBuilder]: Removed 10 assume(true) statements. [2024-02-07 19:32:05,260 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:32:05 BoogieIcfgContainer [2024-02-07 19:32:05,260 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:32:05,262 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:32:05,262 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:32:05,265 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:32:05,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:32:03" (1/4) ... [2024-02-07 19:32:05,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ce6815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:32:05, skipping insertion in model container [2024-02-07 19:32:05,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:32:04" (2/4) ... [2024-02-07 19:32:05,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ce6815 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:32:05, skipping insertion in model container [2024-02-07 19:32:05,267 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 07:32:04" (3/4) ... [2024-02-07 19:32:05,268 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ce6815 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:32:05, skipping insertion in model container [2024-02-07 19:32:05,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:32:05" (4/4) ... [2024-02-07 19:32:05,269 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_11-ptr_racing.i [2024-02-07 19:32:05,283 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:32:05,283 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2024-02-07 19:32:05,284 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:32:05,326 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-07 19:32:05,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 73 transitions, 153 flow [2024-02-07 19:32:05,405 INFO L124 PetriNetUnfolderBase]: 13/95 cut-off events. [2024-02-07 19:32:05,405 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 19:32:05,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 95 events. 13/95 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 344 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 66. Up to 4 conditions per place. [2024-02-07 19:32:05,410 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 73 transitions, 153 flow [2024-02-07 19:32:05,413 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 72 transitions, 151 flow [2024-02-07 19:32:05,420 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:32:05,426 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;@572d9fe1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:32:05,426 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-02-07 19:32:05,436 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:32:05,437 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-02-07 19:32:05,437 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:32:05,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:05,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 19:32:05,438 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2024-02-07 19:32:05,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:05,442 INFO L85 PathProgramCache]: Analyzing trace with hash 406611825, now seen corresponding path program 1 times [2024-02-07 19:32:05,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:05,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079373231] [2024-02-07 19:32:05,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:05,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:05,846 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 19:32:05,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:05,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079373231] [2024-02-07 19:32:05,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079373231] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:32:05,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:32:05,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:32:05,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570819134] [2024-02-07 19:32:05,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:32:05,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:32:05,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:05,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:32:05,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:32:05,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 73 [2024-02-07 19:32:05,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 72 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:32:05,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:05,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 73 [2024-02-07 19:32:05,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:32:06,023 INFO L124 PetriNetUnfolderBase]: 48/188 cut-off events. [2024-02-07 19:32:06,023 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:32:06,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 188 events. 48/188 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 579 event pairs, 24 based on Foata normal form. 24/202 useless extension candidates. Maximal degree in co-relation 294. Up to 99 conditions per place. [2024-02-07 19:32:06,028 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 36 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-02-07 19:32:06,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 58 transitions, 196 flow [2024-02-07 19:32:06,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:32:06,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:32:06,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2024-02-07 19:32:06,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5787671232876712 [2024-02-07 19:32:06,043 INFO L175 Difference]: Start difference. First operand has 66 places, 72 transitions, 151 flow. Second operand 4 states and 169 transitions. [2024-02-07 19:32:06,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 58 transitions, 196 flow [2024-02-07 19:32:06,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 58 transitions, 196 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 19:32:06,050 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 90 flow [2024-02-07 19:32:06,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-02-07 19:32:06,054 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -19 predicate places. [2024-02-07 19:32:06,055 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 90 flow [2024-02-07 19:32:06,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:32:06,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:06,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 19:32:06,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:32:06,056 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2024-02-07 19:32:06,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:06,058 INFO L85 PathProgramCache]: Analyzing trace with hash 406614014, now seen corresponding path program 1 times [2024-02-07 19:32:06,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:06,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626383662] [2024-02-07 19:32:06,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:06,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:06,187 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 19:32:06,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:06,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626383662] [2024-02-07 19:32:06,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626383662] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:32:06,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:32:06,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:32:06,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053793804] [2024-02-07 19:32:06,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:32:06,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:32:06,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:06,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:32:06,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:32:06,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 73 [2024-02-07 19:32:06,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 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 19:32:06,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:06,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 73 [2024-02-07 19:32:06,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:32:06,358 INFO L124 PetriNetUnfolderBase]: 60/204 cut-off events. [2024-02-07 19:32:06,358 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-02-07 19:32:06,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 204 events. 60/204 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 598 event pairs, 18 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 363. Up to 92 conditions per place. [2024-02-07 19:32:06,373 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 27 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-02-07 19:32:06,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 166 flow [2024-02-07 19:32:06,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:32:06,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:32:06,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-02-07 19:32:06,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520547945205479 [2024-02-07 19:32:06,375 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 90 flow. Second operand 4 states and 132 transitions. [2024-02-07 19:32:06,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 166 flow [2024-02-07 19:32:06,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 46 transitions, 161 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:32:06,376 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 93 flow [2024-02-07 19:32:06,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-02-07 19:32:06,377 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -19 predicate places. [2024-02-07 19:32:06,377 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 93 flow [2024-02-07 19:32:06,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 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 19:32:06,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:06,377 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-02-07 19:32:06,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 19:32:06,378 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2024-02-07 19:32:06,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:06,378 INFO L85 PathProgramCache]: Analyzing trace with hash -88045436, now seen corresponding path program 1 times [2024-02-07 19:32:06,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:06,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432303564] [2024-02-07 19:32:06,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:06,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:32:06,396 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:32:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:32:06,422 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:32:06,423 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:32:06,423 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-02-07 19:32:06,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 23 remaining) [2024-02-07 19:32:06,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 23 remaining) [2024-02-07 19:32:06,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (19 of 23 remaining) [2024-02-07 19:32:06,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 23 remaining) [2024-02-07 19:32:06,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 23 remaining) [2024-02-07 19:32:06,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 23 remaining) [2024-02-07 19:32:06,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 23 remaining) [2024-02-07 19:32:06,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 23 remaining) [2024-02-07 19:32:06,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 23 remaining) [2024-02-07 19:32:06,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 23 remaining) [2024-02-07 19:32:06,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 23 remaining) [2024-02-07 19:32:06,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 23 remaining) [2024-02-07 19:32:06,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 23 remaining) [2024-02-07 19:32:06,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 23 remaining) [2024-02-07 19:32:06,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 23 remaining) [2024-02-07 19:32:06,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 23 remaining) [2024-02-07 19:32:06,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 23 remaining) [2024-02-07 19:32:06,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 23 remaining) [2024-02-07 19:32:06,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 23 remaining) [2024-02-07 19:32:06,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 23 remaining) [2024-02-07 19:32:06,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 23 remaining) [2024-02-07 19:32:06,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 23 remaining) [2024-02-07 19:32:06,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 19:32:06,429 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-02-07 19:32:06,431 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 19:32:06,431 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-02-07 19:32:06,457 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-07 19:32:06,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 116 transitions, 248 flow [2024-02-07 19:32:06,472 INFO L124 PetriNetUnfolderBase]: 24/173 cut-off events. [2024-02-07 19:32:06,473 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-07 19:32:06,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 173 events. 24/173 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 782 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 114. Up to 6 conditions per place. [2024-02-07 19:32:06,474 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 116 transitions, 248 flow [2024-02-07 19:32:06,476 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 116 transitions, 248 flow [2024-02-07 19:32:06,477 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:32:06,477 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;@572d9fe1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:32:06,477 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2024-02-07 19:32:06,479 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:32:06,479 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-02-07 19:32:06,479 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:32:06,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:06,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 19:32:06,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2024-02-07 19:32:06,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:06,480 INFO L85 PathProgramCache]: Analyzing trace with hash 517352795, now seen corresponding path program 1 times [2024-02-07 19:32:06,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:06,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032646736] [2024-02-07 19:32:06,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:06,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:06,523 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 19:32:06,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:06,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032646736] [2024-02-07 19:32:06,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032646736] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:32:06,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:32:06,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:32:06,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390868398] [2024-02-07 19:32:06,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:32:06,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:32:06,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:06,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:32:06,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:32:06,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 116 [2024-02-07 19:32:06,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 116 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 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 19:32:06,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:06,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 116 [2024-02-07 19:32:06,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:32:08,486 INFO L124 PetriNetUnfolderBase]: 10068/22162 cut-off events. [2024-02-07 19:32:08,487 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2024-02-07 19:32:08,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38091 conditions, 22162 events. 10068/22162 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 205919 event pairs, 3130 based on Foata normal form. 3666/23662 useless extension candidates. Maximal degree in co-relation 27492. Up to 13235 conditions per place. [2024-02-07 19:32:08,607 INFO L140 encePairwiseOnDemand]: 95/116 looper letters, 126 selfloop transitions, 7 changer transitions 0/177 dead transitions. [2024-02-07 19:32:08,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 177 transitions, 649 flow [2024-02-07 19:32:08,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:32:08,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:32:08,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 389 transitions. [2024-02-07 19:32:08,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6706896551724137 [2024-02-07 19:32:08,611 INFO L175 Difference]: Start difference. First operand has 104 places, 116 transitions, 248 flow. Second operand 5 states and 389 transitions. [2024-02-07 19:32:08,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 177 transitions, 649 flow [2024-02-07 19:32:08,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 177 transitions, 649 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 19:32:08,615 INFO L231 Difference]: Finished difference. Result has 111 places, 107 transitions, 266 flow [2024-02-07 19:32:08,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=266, PETRI_PLACES=111, PETRI_TRANSITIONS=107} [2024-02-07 19:32:08,616 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, 7 predicate places. [2024-02-07 19:32:08,616 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 107 transitions, 266 flow [2024-02-07 19:32:08,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 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 19:32:08,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:08,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 19:32:08,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 19:32:08,617 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2024-02-07 19:32:08,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:08,617 INFO L85 PathProgramCache]: Analyzing trace with hash 517350606, now seen corresponding path program 1 times [2024-02-07 19:32:08,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:08,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139657958] [2024-02-07 19:32:08,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:08,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:08,651 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 19:32:08,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:08,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139657958] [2024-02-07 19:32:08,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139657958] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:32:08,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:32:08,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:32:08,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107045890] [2024-02-07 19:32:08,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:32:08,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:32:08,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:08,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:32:08,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:32:08,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 116 [2024-02-07 19:32:08,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 107 transitions, 266 flow. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 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 19:32:08,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:08,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 116 [2024-02-07 19:32:08,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:32:10,091 INFO L124 PetriNetUnfolderBase]: 8377/18032 cut-off events. [2024-02-07 19:32:10,110 INFO L125 PetriNetUnfolderBase]: For 1633/1633 co-relation queries the response was YES. [2024-02-07 19:32:10,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33057 conditions, 18032 events. 8377/18032 cut-off events. For 1633/1633 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 160463 event pairs, 2983 based on Foata normal form. 0/16345 useless extension candidates. Maximal degree in co-relation 31580. Up to 12415 conditions per place. [2024-02-07 19:32:10,198 INFO L140 encePairwiseOnDemand]: 112/116 looper letters, 114 selfloop transitions, 3 changer transitions 0/165 dead transitions. [2024-02-07 19:32:10,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 165 transitions, 656 flow [2024-02-07 19:32:10,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:32:10,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:32:10,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 300 transitions. [2024-02-07 19:32:10,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.646551724137931 [2024-02-07 19:32:10,201 INFO L175 Difference]: Start difference. First operand has 111 places, 107 transitions, 266 flow. Second operand 4 states and 300 transitions. [2024-02-07 19:32:10,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 165 transitions, 656 flow [2024-02-07 19:32:10,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 165 transitions, 656 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 19:32:10,211 INFO L231 Difference]: Finished difference. Result has 116 places, 108 transitions, 284 flow [2024-02-07 19:32:10,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=116, PETRI_TRANSITIONS=108} [2024-02-07 19:32:10,212 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, 12 predicate places. [2024-02-07 19:32:10,213 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 108 transitions, 284 flow [2024-02-07 19:32:10,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 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 19:32:10,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:10,213 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:32:10,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 19:32:10,214 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2024-02-07 19:32:10,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:10,214 INFO L85 PathProgramCache]: Analyzing trace with hash -880174995, now seen corresponding path program 1 times [2024-02-07 19:32:10,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:10,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253278437] [2024-02-07 19:32:10,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:10,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:10,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-07 19:32:10,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:10,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253278437] [2024-02-07 19:32:10,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253278437] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:32:10,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:32:10,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:32:10,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841311782] [2024-02-07 19:32:10,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:32:10,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:32:10,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:10,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:32:10,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:32:10,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 116 [2024-02-07 19:32:10,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 108 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 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 19:32:10,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:10,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 116 [2024-02-07 19:32:10,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:32:12,037 INFO L124 PetriNetUnfolderBase]: 10217/21121 cut-off events. [2024-02-07 19:32:12,038 INFO L125 PetriNetUnfolderBase]: For 3346/3346 co-relation queries the response was YES. [2024-02-07 19:32:12,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40793 conditions, 21121 events. 10217/21121 cut-off events. For 3346/3346 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 186365 event pairs, 3336 based on Foata normal form. 0/19810 useless extension candidates. Maximal degree in co-relation 39044. Up to 13542 conditions per place. [2024-02-07 19:32:12,136 INFO L140 encePairwiseOnDemand]: 110/116 looper letters, 128 selfloop transitions, 8 changer transitions 0/180 dead transitions. [2024-02-07 19:32:12,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 180 transitions, 744 flow [2024-02-07 19:32:12,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:32:12,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:32:12,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 354 transitions. [2024-02-07 19:32:12,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6103448275862069 [2024-02-07 19:32:12,139 INFO L175 Difference]: Start difference. First operand has 116 places, 108 transitions, 284 flow. Second operand 5 states and 354 transitions. [2024-02-07 19:32:12,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 180 transitions, 744 flow [2024-02-07 19:32:12,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 180 transitions, 739 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:32:12,144 INFO L231 Difference]: Finished difference. Result has 122 places, 112 transitions, 328 flow [2024-02-07 19:32:12,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=122, PETRI_TRANSITIONS=112} [2024-02-07 19:32:12,145 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, 18 predicate places. [2024-02-07 19:32:12,145 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 112 transitions, 328 flow [2024-02-07 19:32:12,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 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 19:32:12,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:12,145 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-02-07 19:32:12,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 19:32:12,146 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2024-02-07 19:32:12,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:12,146 INFO L85 PathProgramCache]: Analyzing trace with hash -880178496, now seen corresponding path program 1 times [2024-02-07 19:32:12,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:12,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606798996] [2024-02-07 19:32:12,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:12,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:12,195 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 19:32:12,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:12,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606798996] [2024-02-07 19:32:12,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606798996] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:32:12,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444187667] [2024-02-07 19:32:12,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:12,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:32:12,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:32:12,206 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 19:32:12,245 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 19:32:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:12,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-07 19:32:12,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:32:12,329 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 19:32:12,330 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:32:12,340 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 19:32:12,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444187667] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:32:12,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 19:32:12,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-02-07 19:32:12,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452399728] [2024-02-07 19:32:12,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 19:32:12,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:32:12,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:12,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:32:12,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:32:12,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 116 [2024-02-07 19:32:12,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 112 transitions, 328 flow. Second operand has 5 states, 5 states have (on average 49.8) internal successors, (249), 5 states have internal predecessors, (249), 0 states have call successors, (0), 0 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 19:32:12,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:12,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 116 [2024-02-07 19:32:12,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:32:12,863 INFO L124 PetriNetUnfolderBase]: 2084/4754 cut-off events. [2024-02-07 19:32:12,863 INFO L125 PetriNetUnfolderBase]: For 2151/2151 co-relation queries the response was YES. [2024-02-07 19:32:12,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9453 conditions, 4754 events. 2084/4754 cut-off events. For 2151/2151 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 34035 event pairs, 671 based on Foata normal form. 618/5156 useless extension candidates. Maximal degree in co-relation 9077. Up to 2673 conditions per place. [2024-02-07 19:32:12,880 INFO L140 encePairwiseOnDemand]: 112/116 looper letters, 107 selfloop transitions, 3 changer transitions 0/149 dead transitions. [2024-02-07 19:32:12,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 149 transitions, 684 flow [2024-02-07 19:32:12,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:32:12,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:32:12,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 332 transitions. [2024-02-07 19:32:12,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5724137931034483 [2024-02-07 19:32:12,882 INFO L175 Difference]: Start difference. First operand has 122 places, 112 transitions, 328 flow. Second operand 5 states and 332 transitions. [2024-02-07 19:32:12,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 149 transitions, 684 flow [2024-02-07 19:32:12,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 149 transitions, 680 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:32:12,885 INFO L231 Difference]: Finished difference. Result has 102 places, 88 transitions, 270 flow [2024-02-07 19:32:12,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=270, PETRI_PLACES=102, PETRI_TRANSITIONS=88} [2024-02-07 19:32:12,886 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -2 predicate places. [2024-02-07 19:32:12,886 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 88 transitions, 270 flow [2024-02-07 19:32:12,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.8) internal successors, (249), 5 states have internal predecessors, (249), 0 states have call successors, (0), 0 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 19:32:12,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:12,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:32:12,899 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 19:32:13,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:32:13,100 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2024-02-07 19:32:13,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:13,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1141691969, now seen corresponding path program 1 times [2024-02-07 19:32:13,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:13,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203088115] [2024-02-07 19:32:13,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:13,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:13,126 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 19:32:13,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:13,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203088115] [2024-02-07 19:32:13,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203088115] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:32:13,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:32:13,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:32:13,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362973737] [2024-02-07 19:32:13,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:32:13,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:32:13,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:13,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:32:13,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:32:13,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 116 [2024-02-07 19:32:13,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 88 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 19:32:13,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:13,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 116 [2024-02-07 19:32:13,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:32:13,530 INFO L124 PetriNetUnfolderBase]: 2455/5515 cut-off events. [2024-02-07 19:32:13,530 INFO L125 PetriNetUnfolderBase]: For 1911/1911 co-relation queries the response was YES. [2024-02-07 19:32:13,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10989 conditions, 5515 events. 2455/5515 cut-off events. For 1911/1911 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 39213 event pairs, 876 based on Foata normal form. 0/5323 useless extension candidates. Maximal degree in co-relation 10558. Up to 3863 conditions per place. [2024-02-07 19:32:13,552 INFO L140 encePairwiseOnDemand]: 111/116 looper letters, 71 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2024-02-07 19:32:13,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 105 transitions, 476 flow [2024-02-07 19:32:13,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:32:13,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:32:13,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2024-02-07 19:32:13,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5488505747126436 [2024-02-07 19:32:13,554 INFO L175 Difference]: Start difference. First operand has 102 places, 88 transitions, 270 flow. Second operand 3 states and 191 transitions. [2024-02-07 19:32:13,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 105 transitions, 476 flow [2024-02-07 19:32:13,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 105 transitions, 468 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 19:32:13,557 INFO L231 Difference]: Finished difference. Result has 97 places, 84 transitions, 261 flow [2024-02-07 19:32:13,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=97, PETRI_TRANSITIONS=84} [2024-02-07 19:32:13,558 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -7 predicate places. [2024-02-07 19:32:13,558 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 84 transitions, 261 flow [2024-02-07 19:32:13,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 19:32:13,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:13,559 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-02-07 19:32:13,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 19:32:13,559 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2024-02-07 19:32:13,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:13,559 INFO L85 PathProgramCache]: Analyzing trace with hash 257041084, now seen corresponding path program 1 times [2024-02-07 19:32:13,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:13,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619447555] [2024-02-07 19:32:13,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:13,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:32:13,571 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:32:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:32:13,581 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:32:13,581 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:32:13,581 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (31 of 32 remaining) [2024-02-07 19:32:13,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 32 remaining) [2024-02-07 19:32:13,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 32 remaining) [2024-02-07 19:32:13,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (28 of 32 remaining) [2024-02-07 19:32:13,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 32 remaining) [2024-02-07 19:32:13,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 32 remaining) [2024-02-07 19:32:13,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 32 remaining) [2024-02-07 19:32:13,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 32 remaining) [2024-02-07 19:32:13,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 32 remaining) [2024-02-07 19:32:13,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 32 remaining) [2024-02-07 19:32:13,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 32 remaining) [2024-02-07 19:32:13,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 32 remaining) [2024-02-07 19:32:13,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 32 remaining) [2024-02-07 19:32:13,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 32 remaining) [2024-02-07 19:32:13,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 32 remaining) [2024-02-07 19:32:13,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 32 remaining) [2024-02-07 19:32:13,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 32 remaining) [2024-02-07 19:32:13,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 32 remaining) [2024-02-07 19:32:13,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 32 remaining) [2024-02-07 19:32:13,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 32 remaining) [2024-02-07 19:32:13,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 32 remaining) [2024-02-07 19:32:13,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 32 remaining) [2024-02-07 19:32:13,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 32 remaining) [2024-02-07 19:32:13,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 32 remaining) [2024-02-07 19:32:13,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 32 remaining) [2024-02-07 19:32:13,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 32 remaining) [2024-02-07 19:32:13,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 32 remaining) [2024-02-07 19:32:13,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 32 remaining) [2024-02-07 19:32:13,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 32 remaining) [2024-02-07 19:32:13,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 32 remaining) [2024-02-07 19:32:13,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 32 remaining) [2024-02-07 19:32:13,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 32 remaining) [2024-02-07 19:32:13,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 19:32:13,586 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-02-07 19:32:13,586 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 19:32:13,586 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-02-07 19:32:13,614 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-07 19:32:13,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 159 transitions, 345 flow [2024-02-07 19:32:13,637 INFO L124 PetriNetUnfolderBase]: 38/266 cut-off events. [2024-02-07 19:32:13,638 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-02-07 19:32:13,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 266 events. 38/266 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1322 event pairs, 1 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 186. Up to 12 conditions per place. [2024-02-07 19:32:13,639 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 159 transitions, 345 flow [2024-02-07 19:32:13,642 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 159 transitions, 345 flow [2024-02-07 19:32:13,642 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:32:13,643 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;@572d9fe1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:32:13,643 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-02-07 19:32:13,644 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:32:13,644 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-02-07 19:32:13,644 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:32:13,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:13,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 19:32:13,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 38 more)] === [2024-02-07 19:32:13,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:13,645 INFO L85 PathProgramCache]: Analyzing trace with hash 669129315, now seen corresponding path program 1 times [2024-02-07 19:32:13,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:13,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171234803] [2024-02-07 19:32:13,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:13,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:13,679 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 19:32:13,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:13,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171234803] [2024-02-07 19:32:13,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171234803] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:32:13,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:32:13,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:32:13,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015390733] [2024-02-07 19:32:13,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:32:13,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:32:13,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:13,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:32:13,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:32:13,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 159 [2024-02-07 19:32:13,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 159 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 0 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 19:32:13,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:13,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 159 [2024-02-07 19:32:13,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand