./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/37_stack_lock_p0_vs_concur.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/37_stack_lock_p0_vs_concur.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-ext/37_stack_lock_p0_vs_concur.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/37_stack_lock_p0_vs_concur.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 16:43:10,529 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:43:10,605 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:43:10,609 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:43:10,610 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:43:10,636 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:43:10,636 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:43:10,636 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:43:10,637 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:43:10,640 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:43:10,640 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:43:10,640 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:43:10,641 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:43:10,642 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:43:10,642 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:43:10,642 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:43:10,643 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:43:10,643 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:43:10,643 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:43:10,643 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:43:10,643 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:43:10,644 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:43:10,644 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:43:10,644 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:43:10,644 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:43:10,644 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:43:10,645 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:43:10,645 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:43:10,645 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:43:10,645 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:43:10,646 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:43:10,646 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:43:10,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:43:10,647 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:43:10,647 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:43:10,647 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:43:10,647 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:43:10,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:43:10,648 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:43:10,648 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:43:10,648 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:43:10,648 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:43:10,648 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:43:10,648 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:43:10,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:43:10,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:43:10,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:43:10,868 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:43:10,869 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:43:10,870 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/37_stack_lock_p0_vs_concur.yml/witness.yml [2024-01-31 16:43:11,080 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:43:11,081 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:43:11,082 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/37_stack_lock_p0_vs_concur.i [2024-01-31 16:43:12,241 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:43:12,481 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:43:12,485 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/37_stack_lock_p0_vs_concur.i [2024-01-31 16:43:12,502 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d9b29628/e7551dd92e694f5cad7dfed3aa9f2e54/FLAG9ff3c48f4 [2024-01-31 16:43:12,516 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d9b29628/e7551dd92e694f5cad7dfed3aa9f2e54 [2024-01-31 16:43:12,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:43:12,518 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:43:12,520 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:43:12,520 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:43:12,524 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:43:12,524 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:43:11" (1/2) ... [2024-01-31 16:43:12,525 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d8017e5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:43:12, skipping insertion in model container [2024-01-31 16:43:12,525 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:43:11" (1/2) ... [2024-01-31 16:43:12,527 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@71dbe4f3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:43:12, skipping insertion in model container [2024-01-31 16:43:12,527 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:43:12" (2/2) ... [2024-01-31 16:43:12,527 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d8017e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:12, skipping insertion in model container [2024-01-31 16:43:12,527 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:43:12" (2/2) ... [2024-01-31 16:43:12,528 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:43:12,769 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:43:12,771 INFO L98 nessWitnessExtractor]: Location invariant before [L729-L729] (((((((0 <= m) && (1 <= next_alloc_idx)) && (next_alloc_idx <= 66)) && (m <= 1)) && (top == 0)) && (next_alloc_idx % 2 == 1)) && ((unsigned long )arg == 0UL)) && (m == 0 || m == 1) [2024-01-31 16:43:12,771 INFO L98 nessWitnessExtractor]: Location invariant after [L710-L710] ((((((((((((((2147483638LL + (long long )d) + (long long )oldTop >= 0LL) && ((2147483638LL + (long long )d) + (long long )newTop >= 0LL)) && ((4294967296LL + (long long )newTop) + (long long )oldTop >= 0LL)) && ((2147483658LL - (long long )d) + (long long )oldTop >= 0LL)) && ((2147483658LL - (long long )d) + (long long )newTop >= 0LL)) && ((4294967295LL - (long long )newTop) + (long long )oldTop >= 0LL)) && ((2147483637LL + (long long )d) - (long long )oldTop >= 0LL)) && ((2147483637LL + (long long )d) - (long long )newTop >= 0LL)) && ((4294967295LL + (long long )newTop) - (long long )oldTop >= 0LL)) && ((2147483657LL - (long long )d) - (long long )oldTop >= 0LL)) && ((2147483657LL - (long long )d) - (long long )newTop >= 0LL)) && ((4294967294LL - (long long )newTop) - (long long )oldTop >= 0LL)) && (10 == d)) && (d == 10) [2024-01-31 16:43:12,810 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:43:13,109 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/37_stack_lock_p0_vs_concur.i[30907,30920] [2024-01-31 16:43:13,115 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:43:13,124 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:43:13,161 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:43:13,166 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/37_stack_lock_p0_vs_concur.i[30907,30920] Start Parsing Local [2024-01-31 16:43:13,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:43:13,223 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:43:13,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:13 WrapperNode [2024-01-31 16:43:13,223 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:43:13,225 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:43:13,225 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:43:13,225 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:43:13,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:13" (1/1) ... [2024-01-31 16:43:13,243 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:13" (1/1) ... [2024-01-31 16:43:13,265 INFO L138 Inliner]: procedures = 173, calls = 30, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 87 [2024-01-31 16:43:13,266 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:43:13,266 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:43:13,266 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:43:13,266 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:43:13,275 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:13" (1/1) ... [2024-01-31 16:43:13,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:13" (1/1) ... [2024-01-31 16:43:13,277 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:13" (1/1) ... [2024-01-31 16:43:13,288 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 1, 7]. 70 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 3 writes are split as follows [0, 1, 2]. [2024-01-31 16:43:13,288 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:13" (1/1) ... [2024-01-31 16:43:13,288 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:13" (1/1) ... [2024-01-31 16:43:13,292 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:13" (1/1) ... [2024-01-31 16:43:13,294 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:13" (1/1) ... [2024-01-31 16:43:13,295 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:13" (1/1) ... [2024-01-31 16:43:13,296 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:13" (1/1) ... [2024-01-31 16:43:13,298 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:43:13,299 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:43:13,299 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:43:13,299 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:43:13,300 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:13" (1/1) ... [2024-01-31 16:43:13,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:43:13,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:43:13,637 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 16:43:13,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 16:43:13,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:43:13,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:43:13,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:43:13,667 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-01-31 16:43:13,667 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-01-31 16:43:13,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:43:13,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:43:13,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:43:13,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:43:13,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:43:13,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:43:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:43:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:43:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:43:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:43:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:43:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:43:13,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:43:13,669 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:43:13,758 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:43:13,760 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:43:13,887 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:43:13,887 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:43:13,988 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:43:13,989 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-01-31 16:43:13,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:43:13 BoogieIcfgContainer [2024-01-31 16:43:13,989 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:43:13,990 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:43:13,991 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:43:13,993 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:43:13,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:43:11" (1/4) ... [2024-01-31 16:43:13,994 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7247fc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:43:13, skipping insertion in model container [2024-01-31 16:43:13,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:43:12" (2/4) ... [2024-01-31 16:43:13,994 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7247fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:43:13, skipping insertion in model container [2024-01-31 16:43:13,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:43:13" (3/4) ... [2024-01-31 16:43:13,994 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7247fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:43:13, skipping insertion in model container [2024-01-31 16:43:13,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:43:13" (4/4) ... [2024-01-31 16:43:13,995 INFO L112 eAbstractionObserver]: Analyzing ICFG 37_stack_lock_p0_vs_concur.i [2024-01-31 16:43:14,007 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:43:14,007 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-31 16:43:14,008 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:43:14,033 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:43:14,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 22 places, 21 transitions, 46 flow [2024-01-31 16:43:14,069 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2024-01-31 16:43:14,069 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:43:14,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 23 events. 2/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 27 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2024-01-31 16:43:14,071 INFO L82 GeneralOperation]: Start removeDead. Operand has 22 places, 21 transitions, 46 flow [2024-01-31 16:43:14,074 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 21 transitions, 46 flow [2024-01-31 16:43:14,081 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:43:14,086 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;@1a291534, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:43:14,086 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-31 16:43:14,090 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:43:14,090 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-01-31 16:43:14,090 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:43:14,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:14,091 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-01-31 16:43:14,091 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:43:14,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:14,095 INFO L85 PathProgramCache]: Analyzing trace with hash -71985665, now seen corresponding path program 1 times [2024-01-31 16:43:14,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:14,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286419430] [2024-01-31 16:43:14,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:14,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:43:14,255 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:43:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:43:14,295 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:43:14,296 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:43:14,297 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-01-31 16:43:14,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 5 remaining) [2024-01-31 16:43:14,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-01-31 16:43:14,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 5 remaining) [2024-01-31 16:43:14,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-01-31 16:43:14,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:43:14,301 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-01-31 16:43:14,313 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 16:43:14,315 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-31 16:43:14,342 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:43:14,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 37 transitions, 84 flow [2024-01-31 16:43:14,371 INFO L124 PetriNetUnfolderBase]: 4/42 cut-off events. [2024-01-31 16:43:14,372 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 16:43:14,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 42 events. 4/42 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 90 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 33. Up to 3 conditions per place. [2024-01-31 16:43:14,374 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 37 transitions, 84 flow [2024-01-31 16:43:14,375 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 37 transitions, 84 flow [2024-01-31 16:43:14,376 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:43:14,377 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;@1a291534, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:43:14,377 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-01-31 16:43:14,386 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:43:14,386 INFO L124 PetriNetUnfolderBase]: 1/25 cut-off events. [2024-01-31 16:43:14,386 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 16:43:14,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:14,386 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-01-31 16:43:14,387 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 16:43:14,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:14,387 INFO L85 PathProgramCache]: Analyzing trace with hash 567769901, now seen corresponding path program 1 times [2024-01-31 16:43:14,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:14,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912219547] [2024-01-31 16:43:14,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:14,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:43:14,419 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:43:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:43:14,443 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:43:14,444 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:43:14,444 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-01-31 16:43:14,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 7 remaining) [2024-01-31 16:43:14,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2024-01-31 16:43:14,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 7 remaining) [2024-01-31 16:43:14,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2024-01-31 16:43:14,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 7 remaining) [2024-01-31 16:43:14,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-01-31 16:43:14,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:43:14,448 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-01-31 16:43:14,449 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 16:43:14,449 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-01-31 16:43:14,489 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:43:14,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 53 transitions, 124 flow [2024-01-31 16:43:14,511 INFO L124 PetriNetUnfolderBase]: 6/61 cut-off events. [2024-01-31 16:43:14,511 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-01-31 16:43:14,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 61 events. 6/61 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 162 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2024-01-31 16:43:14,513 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 53 transitions, 124 flow [2024-01-31 16:43:14,513 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 53 transitions, 124 flow [2024-01-31 16:43:14,514 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:43:14,516 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;@1a291534, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:43:14,516 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-01-31 16:43:14,523 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:43:14,523 INFO L124 PetriNetUnfolderBase]: 1/30 cut-off events. [2024-01-31 16:43:14,523 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 16:43:14,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:14,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:43:14,523 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-01-31 16:43:14,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:14,524 INFO L85 PathProgramCache]: Analyzing trace with hash 867885413, now seen corresponding path program 1 times [2024-01-31 16:43:14,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:14,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210388874] [2024-01-31 16:43:14,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:14,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:14,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:43:14,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:14,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210388874] [2024-01-31 16:43:14,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210388874] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:14,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:14,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:43:14,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425951739] [2024-01-31 16:43:14,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:14,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-31 16:43:14,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:14,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-31 16:43:14,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-31 16:43:14,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 53 [2024-01-31 16:43:14,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 124 flow. Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:14,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:14,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 53 [2024-01-31 16:43:14,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:16,526 INFO L124 PetriNetUnfolderBase]: 14696/20495 cut-off events. [2024-01-31 16:43:16,526 INFO L125 PetriNetUnfolderBase]: For 932/932 co-relation queries the response was YES. [2024-01-31 16:43:16,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41453 conditions, 20495 events. 14696/20495 cut-off events. For 932/932 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 109261 event pairs, 13325 based on Foata normal form. 0/17694 useless extension candidates. Maximal degree in co-relation 26171. Up to 20340 conditions per place. [2024-01-31 16:43:16,653 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 39 selfloop transitions, 0 changer transitions 0/46 dead transitions. [2024-01-31 16:43:16,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 188 flow [2024-01-31 16:43:16,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-31 16:43:16,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-31 16:43:16,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 60 transitions. [2024-01-31 16:43:16,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5660377358490566 [2024-01-31 16:43:16,665 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 124 flow. Second operand 2 states and 60 transitions. [2024-01-31 16:43:16,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 188 flow [2024-01-31 16:43:16,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 46 transitions, 186 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-01-31 16:43:16,672 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 108 flow [2024-01-31 16:43:16,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=108, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-01-31 16:43:16,676 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2024-01-31 16:43:16,676 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 108 flow [2024-01-31 16:43:16,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:16,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:16,677 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-01-31 16:43:16,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:43:16,677 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-01-31 16:43:16,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:16,678 INFO L85 PathProgramCache]: Analyzing trace with hash 534488606, now seen corresponding path program 1 times [2024-01-31 16:43:16,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:16,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149880444] [2024-01-31 16:43:16,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:16,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:16,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:43:16,708 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:43:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:43:16,717 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:43:16,717 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:43:16,717 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-01-31 16:43:16,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 9 remaining) [2024-01-31 16:43:16,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2024-01-31 16:43:16,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 9 remaining) [2024-01-31 16:43:16,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining) [2024-01-31 16:43:16,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 9 remaining) [2024-01-31 16:43:16,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2024-01-31 16:43:16,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 9 remaining) [2024-01-31 16:43:16,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2024-01-31 16:43:16,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:43:16,719 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-01-31 16:43:16,720 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 16:43:16,720 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-01-31 16:43:16,748 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:43:16,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 69 transitions, 166 flow [2024-01-31 16:43:16,757 INFO L124 PetriNetUnfolderBase]: 8/80 cut-off events. [2024-01-31 16:43:16,757 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-01-31 16:43:16,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 80 events. 8/80 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 230 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 73. Up to 5 conditions per place. [2024-01-31 16:43:16,758 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 69 transitions, 166 flow [2024-01-31 16:43:16,759 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 69 transitions, 166 flow [2024-01-31 16:43:16,760 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:43:16,760 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;@1a291534, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:43:16,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-01-31 16:43:16,762 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:43:16,763 INFO L124 PetriNetUnfolderBase]: 1/30 cut-off events. [2024-01-31 16:43:16,763 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 16:43:16,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:16,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:43:16,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-01-31 16:43:16,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:16,764 INFO L85 PathProgramCache]: Analyzing trace with hash 126137349, now seen corresponding path program 1 times [2024-01-31 16:43:16,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:16,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196044852] [2024-01-31 16:43:16,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:16,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:16,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:43:16,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:16,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196044852] [2024-01-31 16:43:16,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196044852] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:16,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:16,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:43:16,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999608973] [2024-01-31 16:43:16,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:16,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-31 16:43:16,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:16,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-31 16:43:16,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-31 16:43:16,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 69 [2024-01-31 16:43:16,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 166 flow. Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:16,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:16,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 69 [2024-01-31 16:43:16,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:43:38,722 INFO L124 PetriNetUnfolderBase]: 244296/313575 cut-off events. [2024-01-31 16:43:38,723 INFO L125 PetriNetUnfolderBase]: For 18772/18772 co-relation queries the response was YES. [2024-01-31 16:43:39,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 634926 conditions, 313575 events. 244296/313575 cut-off events. For 18772/18772 co-relation queries the response was YES. Maximal size of possible extension queue 5286. Compared 1876820 event pairs, 222189 based on Foata normal form. 0/268733 useless extension candidates. Maximal degree in co-relation 199797. Up to 312092 conditions per place. [2024-01-31 16:43:40,494 INFO L140 encePairwiseOnDemand]: 60/69 looper letters, 51 selfloop transitions, 0 changer transitions 0/60 dead transitions. [2024-01-31 16:43:40,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 60 transitions, 250 flow [2024-01-31 16:43:40,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-31 16:43:40,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-31 16:43:40,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 78 transitions. [2024-01-31 16:43:40,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5652173913043478 [2024-01-31 16:43:40,497 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 166 flow. Second operand 2 states and 78 transitions. [2024-01-31 16:43:40,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 60 transitions, 250 flow [2024-01-31 16:43:40,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 60 transitions, 244 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-01-31 16:43:40,508 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 142 flow [2024-01-31 16:43:40,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=142, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2024-01-31 16:43:40,509 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -4 predicate places. [2024-01-31 16:43:40,509 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 142 flow [2024-01-31 16:43:40,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:40,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:43:40,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:43:40,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:43:40,510 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-01-31 16:43:40,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:43:40,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1485004295, now seen corresponding path program 1 times [2024-01-31 16:43:40,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:43:40,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708860895] [2024-01-31 16:43:40,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:43:40,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:43:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:43:40,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:43:40,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:43:40,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708860895] [2024-01-31 16:43:40,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708860895] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:43:40,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:43:40,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:43:40,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646895854] [2024-01-31 16:43:40,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:43:40,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:43:40,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:43:40,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:43:40,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:43:40,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 69 [2024-01-31 16:43:40,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:43:40,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:43:40,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 69 [2024-01-31 16:43:40,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand