./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/triangular-longer-2.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/triangular-longer-2.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/triangular-longer-2.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/triangular-longer-2.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 17:31:36,152 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:31:36,219 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:31:36,224 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:31:36,225 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:31:36,248 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:31:36,249 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:31:36,249 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:31:36,250 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:31:36,253 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:31:36,253 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:31:36,254 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:31:36,255 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:31:36,256 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:31:36,256 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:31:36,256 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:31:36,257 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:31:36,257 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:31:36,257 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:31:36,257 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:31:36,257 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:31:36,258 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:31:36,258 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:31:36,258 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:31:36,259 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:31:36,259 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:31:36,259 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:31:36,259 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:31:36,260 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:31:36,260 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:31:36,261 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:31:36,261 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:31:36,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:31:36,261 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:31:36,262 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:31:36,262 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:31:36,262 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:31:36,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:31:36,262 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:31:36,263 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:31:36,263 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:31:36,263 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:31:36,263 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:31:36,263 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:31:36,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:31:36,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:31:36,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:31:36,537 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:31:36,538 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:31:36,539 INFO L431 ainManager$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/triangular-longer-2.yml/witness.yml [2024-01-31 17:31:36,681 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:31:36,682 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:31:36,682 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-2.i [2024-01-31 17:31:37,728 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:31:37,927 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:31:37,930 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i [2024-01-31 17:31:37,942 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbb478709/b5e32315f1fc449b94e20727ed7fc930/FLAG2d8ec7cad [2024-01-31 17:31:37,953 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbb478709/b5e32315f1fc449b94e20727ed7fc930 [2024-01-31 17:31:37,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:31:37,955 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:31:37,957 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:31:37,958 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:31:37,963 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:31:37,963 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:31:36" (1/2) ... [2024-01-31 17:31:37,964 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@162a1ebf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:31:37, skipping insertion in model container [2024-01-31 17:31:37,964 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:31:36" (1/2) ... [2024-01-31 17:31:37,965 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4d4915b7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:31:37, skipping insertion in model container [2024-01-31 17:31:37,966 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:31:37" (2/2) ... [2024-01-31 17:31:37,966 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@162a1ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:31:37, skipping insertion in model container [2024-01-31 17:31:37,966 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:31:37" (2/2) ... [2024-01-31 17:31:37,966 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:31:38,067 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:31:38,069 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] (((((0 <= condI) && (0 <= condJ)) && (condI <= 1)) && (condJ <= 1)) && (condI == 0 || condI == 1)) && (condJ == 0 || condJ == 1) [2024-01-31 17:31:38,069 INFO L98 nessWitnessExtractor]: Location invariant after [L719-L719] ((((((0 <= condI) && (3 <= i)) && (4 <= j)) && (condI <= 1)) && (i % 2 == 1)) && (j % 2 == 0)) && (condI == 0 || condI == 1) [2024-01-31 17:31:38,069 INFO L98 nessWitnessExtractor]: Location invariant after [L716-L716] (((((((3 <= i) && (4 <= j)) && ((4294967296LL + (long long )condI) + (long long )condJ >= 0LL)) && ((4294967295LL - (long long )condI) + (long long )condJ >= 0LL)) && ((4294967295LL + (long long )condI) - (long long )condJ >= 0LL)) && ((4294967294LL - (long long )condI) - (long long )condJ >= 0LL)) && (i % 2 == 1)) && (j % 2 == 0) [2024-01-31 17:31:38,110 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:31:38,456 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/triangular-longer-2.i[30963,30976] [2024-01-31 17:31:38,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:31:38,469 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:31:38,510 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 17:31:38,512 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 17:31:38,514 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/triangular-longer-2.i[30963,30976] Start Parsing Local [2024-01-31 17:31:38,540 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:31:38,567 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:31:38,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:31:38 WrapperNode [2024-01-31 17:31:38,567 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:31:38,568 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:31:38,568 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:31:38,568 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:31:38,573 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:31:38" (1/1) ... [2024-01-31 17:31:38,585 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:31:38" (1/1) ... [2024-01-31 17:31:38,601 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 46 [2024-01-31 17:31:38,601 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:31:38,602 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:31:38,602 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:31:38,602 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:31:38,611 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:31:38" (1/1) ... [2024-01-31 17:31:38,611 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:31:38" (1/1) ... [2024-01-31 17:31:38,613 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:31:38" (1/1) ... [2024-01-31 17:31:38,626 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-31 17:31:38,626 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:31:38" (1/1) ... [2024-01-31 17:31:38,627 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:31:38" (1/1) ... [2024-01-31 17:31:38,631 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:31:38" (1/1) ... [2024-01-31 17:31:38,634 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:31:38" (1/1) ... [2024-01-31 17:31:38,635 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:31:38" (1/1) ... [2024-01-31 17:31:38,636 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:31:38" (1/1) ... [2024-01-31 17:31:38,638 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:31:38,640 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:31:38,640 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:31:38,641 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:31:38,642 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:31:38" (1/1) ... [2024-01-31 17:31:38,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:31:38,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:31:38,671 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 17:31:38,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 17:31:38,704 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-01-31 17:31:38,704 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-01-31 17:31:38,705 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-01-31 17:31:38,705 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-01-31 17:31:38,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:31:38,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:31:38,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:31:38,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:31:38,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:31:38,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:31:38,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:31:38,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:31:38,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:31:38,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:31:38,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:31:38,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:31:38,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:31:38,710 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 17:31:38,829 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:31:38,831 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:31:38,930 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:31:38,931 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:31:39,014 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:31:39,015 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-01-31 17:31:39,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:31:39 BoogieIcfgContainer [2024-01-31 17:31:39,015 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:31:39,017 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:31:39,017 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:31:39,020 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:31:39,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:31:36" (1/4) ... [2024-01-31 17:31:39,021 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15663af7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:31:39, skipping insertion in model container [2024-01-31 17:31:39,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:31:37" (2/4) ... [2024-01-31 17:31:39,021 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15663af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:31:39, skipping insertion in model container [2024-01-31 17:31:39,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:31:38" (3/4) ... [2024-01-31 17:31:39,021 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15663af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:31:39, skipping insertion in model container [2024-01-31 17:31:39,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:31:39" (4/4) ... [2024-01-31 17:31:39,023 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2024-01-31 17:31:39,038 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:31:39,038 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-31 17:31:39,038 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:31:39,081 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 17:31:39,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 26 transitions, 60 flow [2024-01-31 17:31:39,126 INFO L124 PetriNetUnfolderBase]: 3/24 cut-off events. [2024-01-31 17:31:39,126 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:31:39,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 24 events. 3/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-01-31 17:31:39,129 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 26 transitions, 60 flow [2024-01-31 17:31:39,131 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 24 transitions, 54 flow [2024-01-31 17:31:39,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:31:39,144 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;@4cad9fc0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:31:39,144 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-31 17:31:39,150 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:31:39,150 INFO L124 PetriNetUnfolderBase]: 2/19 cut-off events. [2024-01-31 17:31:39,150 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:31:39,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:31:39,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:31:39,152 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:31:39,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:31:39,156 INFO L85 PathProgramCache]: Analyzing trace with hash 911678794, now seen corresponding path program 1 times [2024-01-31 17:31:39,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:31:39,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327827457] [2024-01-31 17:31:39,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:31:39,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:31:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:31:39,568 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 17:31:39,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:31:39,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327827457] [2024-01-31 17:31:39,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327827457] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:31:39,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:31:39,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:31:39,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143715652] [2024-01-31 17:31:39,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:31:39,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:31:39,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:31:39,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:31:39,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:31:39,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-01-31 17:31:39,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 54 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 17:31:39,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:31:39,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-01-31 17:31:39,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:31:39,887 INFO L124 PetriNetUnfolderBase]: 345/592 cut-off events. [2024-01-31 17:31:39,888 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 17:31:39,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1140 conditions, 592 events. 345/592 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2430 event pairs, 70 based on Foata normal form. 12/591 useless extension candidates. Maximal degree in co-relation 1130. Up to 257 conditions per place. [2024-01-31 17:31:39,897 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 26 selfloop transitions, 4 changer transitions 22/56 dead transitions. [2024-01-31 17:31:39,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 56 transitions, 222 flow [2024-01-31 17:31:39,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:31:39,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:31:39,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2024-01-31 17:31:39,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-01-31 17:31:39,914 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 54 flow. Second operand 6 states and 91 transitions. [2024-01-31 17:31:39,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 56 transitions, 222 flow [2024-01-31 17:31:39,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 56 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:31:39,923 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 75 flow [2024-01-31 17:31:39,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=75, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2024-01-31 17:31:39,930 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 7 predicate places. [2024-01-31 17:31:39,930 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 75 flow [2024-01-31 17:31:39,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 17:31:39,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:31:39,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:31:39,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:31:39,931 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:31:39,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:31:39,933 INFO L85 PathProgramCache]: Analyzing trace with hash 923729954, now seen corresponding path program 1 times [2024-01-31 17:31:39,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:31:39,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406308349] [2024-01-31 17:31:39,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:31:39,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:31:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:31:40,151 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 17:31:40,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:31:40,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406308349] [2024-01-31 17:31:40,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406308349] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:31:40,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:31:40,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:31:40,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417587162] [2024-01-31 17:31:40,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:31:40,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:31:40,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:31:40,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:31:40,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:31:40,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-01-31 17:31:40,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 75 flow. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 17:31:40,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:31:40,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-01-31 17:31:40,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:31:40,333 INFO L124 PetriNetUnfolderBase]: 454/822 cut-off events. [2024-01-31 17:31:40,334 INFO L125 PetriNetUnfolderBase]: For 297/303 co-relation queries the response was YES. [2024-01-31 17:31:40,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1839 conditions, 822 events. 454/822 cut-off events. For 297/303 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3615 event pairs, 71 based on Foata normal form. 33/854 useless extension candidates. Maximal degree in co-relation 1825. Up to 279 conditions per place. [2024-01-31 17:31:40,339 INFO L140 encePairwiseOnDemand]: 20/26 looper letters, 50 selfloop transitions, 9 changer transitions 20/83 dead transitions. [2024-01-31 17:31:40,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 83 transitions, 397 flow [2024-01-31 17:31:40,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:31:40,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:31:40,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-01-31 17:31:40,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-01-31 17:31:40,341 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 75 flow. Second operand 9 states and 130 transitions. [2024-01-31 17:31:40,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 83 transitions, 397 flow [2024-01-31 17:31:40,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 83 transitions, 381 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-01-31 17:31:40,345 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 160 flow [2024-01-31 17:31:40,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=160, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-01-31 17:31:40,345 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 16 predicate places. [2024-01-31 17:31:40,346 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 160 flow [2024-01-31 17:31:40,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 17:31:40,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:31:40,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:31:40,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:31:40,347 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:31:40,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:31:40,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1440305894, now seen corresponding path program 2 times [2024-01-31 17:31:40,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:31:40,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627562947] [2024-01-31 17:31:40,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:31:40,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:31:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:31:40,429 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 17:31:40,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:31:40,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627562947] [2024-01-31 17:31:40,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627562947] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:31:40,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:31:40,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:31:40,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398480423] [2024-01-31 17:31:40,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:31:40,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:31:40,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:31:40,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:31:40,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:31:40,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-01-31 17:31:40,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 17:31:40,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:31:40,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-01-31 17:31:40,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:31:40,640 INFO L124 PetriNetUnfolderBase]: 391/723 cut-off events. [2024-01-31 17:31:40,640 INFO L125 PetriNetUnfolderBase]: For 1157/1169 co-relation queries the response was YES. [2024-01-31 17:31:40,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2032 conditions, 723 events. 391/723 cut-off events. For 1157/1169 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3182 event pairs, 92 based on Foata normal form. 48/770 useless extension candidates. Maximal degree in co-relation 2011. Up to 264 conditions per place. [2024-01-31 17:31:40,644 INFO L140 encePairwiseOnDemand]: 20/26 looper letters, 43 selfloop transitions, 15 changer transitions 32/94 dead transitions. [2024-01-31 17:31:40,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 94 transitions, 584 flow [2024-01-31 17:31:40,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:31:40,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:31:40,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-01-31 17:31:40,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5269230769230769 [2024-01-31 17:31:40,649 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 160 flow. Second operand 10 states and 137 transitions. [2024-01-31 17:31:40,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 94 transitions, 584 flow [2024-01-31 17:31:40,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 94 transitions, 574 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-01-31 17:31:40,657 INFO L231 Difference]: Finished difference. Result has 55 places, 41 transitions, 274 flow [2024-01-31 17:31:40,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=274, PETRI_PLACES=55, PETRI_TRANSITIONS=41} [2024-01-31 17:31:40,658 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 27 predicate places. [2024-01-31 17:31:40,658 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 41 transitions, 274 flow [2024-01-31 17:31:40,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 17:31:40,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:31:40,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:31:40,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:31:40,660 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:31:40,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:31:40,660 INFO L85 PathProgramCache]: Analyzing trace with hash -66587567, now seen corresponding path program 1 times [2024-01-31 17:31:40,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:31:40,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140214617] [2024-01-31 17:31:40,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:31:40,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:31:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:31:40,813 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 17:31:40,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:31:40,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140214617] [2024-01-31 17:31:40,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140214617] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:31:40,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:31:40,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:31:40,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946480507] [2024-01-31 17:31:40,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:31:40,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:31:40,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:31:40,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:31:40,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:31:40,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-01-31 17:31:40,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 41 transitions, 274 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 17:31:40,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:31:40,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-01-31 17:31:40,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:31:41,102 INFO L124 PetriNetUnfolderBase]: 580/1058 cut-off events. [2024-01-31 17:31:41,103 INFO L125 PetriNetUnfolderBase]: For 3952/3964 co-relation queries the response was YES. [2024-01-31 17:31:41,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3464 conditions, 1058 events. 580/1058 cut-off events. For 3952/3964 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4980 event pairs, 53 based on Foata normal form. 39/1096 useless extension candidates. Maximal degree in co-relation 3436. Up to 271 conditions per place. [2024-01-31 17:31:41,109 INFO L140 encePairwiseOnDemand]: 20/26 looper letters, 60 selfloop transitions, 21 changer transitions 23/108 dead transitions. [2024-01-31 17:31:41,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 108 transitions, 792 flow [2024-01-31 17:31:41,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 17:31:41,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 17:31:41,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 156 transitions. [2024-01-31 17:31:41,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-01-31 17:31:41,112 INFO L175 Difference]: Start difference. First operand has 55 places, 41 transitions, 274 flow. Second operand 11 states and 156 transitions. [2024-01-31 17:31:41,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 108 transitions, 792 flow [2024-01-31 17:31:41,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 108 transitions, 727 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-01-31 17:31:41,120 INFO L231 Difference]: Finished difference. Result has 65 places, 47 transitions, 382 flow [2024-01-31 17:31:41,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=382, PETRI_PLACES=65, PETRI_TRANSITIONS=47} [2024-01-31 17:31:41,122 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 37 predicate places. [2024-01-31 17:31:41,122 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 47 transitions, 382 flow [2024-01-31 17:31:41,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 17:31:41,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:31:41,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:31:41,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:31:41,124 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:31:41,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:31:41,126 INFO L85 PathProgramCache]: Analyzing trace with hash -760869871, now seen corresponding path program 2 times [2024-01-31 17:31:41,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:31:41,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525121747] [2024-01-31 17:31:41,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:31:41,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:31:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:31:41,244 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 17:31:41,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:31:41,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525121747] [2024-01-31 17:31:41,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525121747] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:31:41,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:31:41,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:31:41,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081280485] [2024-01-31 17:31:41,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:31:41,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:31:41,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:31:41,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:31:41,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:31:41,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-01-31 17:31:41,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 47 transitions, 382 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 17:31:41,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:31:41,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-01-31 17:31:41,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:31:41,475 INFO L124 PetriNetUnfolderBase]: 499/923 cut-off events. [2024-01-31 17:31:41,476 INFO L125 PetriNetUnfolderBase]: For 5615/5627 co-relation queries the response was YES. [2024-01-31 17:31:41,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3505 conditions, 923 events. 499/923 cut-off events. For 5615/5627 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4260 event pairs, 65 based on Foata normal form. 57/979 useless extension candidates. Maximal degree in co-relation 3472. Up to 181 conditions per place. [2024-01-31 17:31:41,484 INFO L140 encePairwiseOnDemand]: 20/26 looper letters, 46 selfloop transitions, 25 changer transitions 33/108 dead transitions. [2024-01-31 17:31:41,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 108 transitions, 976 flow [2024-01-31 17:31:41,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 17:31:41,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 17:31:41,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-01-31 17:31:41,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244755244755245 [2024-01-31 17:31:41,488 INFO L175 Difference]: Start difference. First operand has 65 places, 47 transitions, 382 flow. Second operand 11 states and 150 transitions. [2024-01-31 17:31:41,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 108 transitions, 976 flow [2024-01-31 17:31:41,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 108 transitions, 899 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-01-31 17:31:41,505 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 478 flow [2024-01-31 17:31:41,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=478, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2024-01-31 17:31:41,507 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 44 predicate places. [2024-01-31 17:31:41,508 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 478 flow [2024-01-31 17:31:41,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 17:31:41,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:31:41,508 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:31:41,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:31:41,508 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:31:41,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:31:41,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1535443013, now seen corresponding path program 1 times [2024-01-31 17:31:41,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:31:41,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409304708] [2024-01-31 17:31:41,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:31:41,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:31:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:31:41,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:31:41,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:31:41,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409304708] [2024-01-31 17:31:41,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409304708] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:31:41,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253905062] [2024-01-31 17:31:41,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:31:41,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:31:41,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:31:41,639 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) [2024-01-31 17:31:41,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-31 17:31:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:31:41,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-31 17:31:41,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:31:41,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:31:41,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:31:41,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:31:41,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253905062] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:31:41,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:31:41,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-01-31 17:31:41,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133383581] [2024-01-31 17:31:41,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:31:41,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-01-31 17:31:41,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:31:41,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-01-31 17:31:41,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-01-31 17:31:41,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-01-31 17:31:41,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 478 flow. Second operand has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 13 states have internal predecessors, (106), 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 17:31:41,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:31:41,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-01-31 17:31:41,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:31:42,299 INFO L124 PetriNetUnfolderBase]: 607/1131 cut-off events. [2024-01-31 17:31:42,299 INFO L125 PetriNetUnfolderBase]: For 10897/10909 co-relation queries the response was YES. [2024-01-31 17:31:42,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4835 conditions, 1131 events. 607/1131 cut-off events. For 10897/10909 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4916 event pairs, 161 based on Foata normal form. 75/1205 useless extension candidates. Maximal degree in co-relation 4799. Up to 513 conditions per place. [2024-01-31 17:31:42,306 INFO L140 encePairwiseOnDemand]: 20/26 looper letters, 66 selfloop transitions, 19 changer transitions 67/156 dead transitions. [2024-01-31 17:31:42,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 156 transitions, 1552 flow [2024-01-31 17:31:42,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-01-31 17:31:42,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-01-31 17:31:42,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 251 transitions. [2024-01-31 17:31:42,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080971659919028 [2024-01-31 17:31:42,307 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 478 flow. Second operand 19 states and 251 transitions. [2024-01-31 17:31:42,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 156 transitions, 1552 flow [2024-01-31 17:31:42,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 156 transitions, 1437 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-01-31 17:31:42,320 INFO L231 Difference]: Finished difference. Result has 91 places, 56 transitions, 608 flow [2024-01-31 17:31:42,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=608, PETRI_PLACES=91, PETRI_TRANSITIONS=56} [2024-01-31 17:31:42,321 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 63 predicate places. [2024-01-31 17:31:42,321 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 56 transitions, 608 flow [2024-01-31 17:31:42,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 13 states have internal predecessors, (106), 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 17:31:42,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:31:42,321 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:31:42,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-31 17:31:42,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-01-31 17:31:42,537 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:31:42,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:31:42,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1772569297, now seen corresponding path program 2 times [2024-01-31 17:31:42,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:31:42,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099847708] [2024-01-31 17:31:42,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:31:42,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:31:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:31:42,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:31:42,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:31:42,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099847708] [2024-01-31 17:31:42,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099847708] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:31:42,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849790569] [2024-01-31 17:31:42,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:31:42,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:31:42,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:31:42,618 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:31:42,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-31 17:31:42,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:31:42,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:31:42,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-31 17:31:42,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:31:42,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:31:42,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:31:42,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:31:42,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849790569] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:31:42,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:31:42,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-01-31 17:31:42,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092697406] [2024-01-31 17:31:42,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:31:42,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-01-31 17:31:42,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:31:42,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-01-31 17:31:42,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-01-31 17:31:42,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-01-31 17:31:42,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 56 transitions, 608 flow. Second operand has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 13 states have internal predecessors, (106), 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 17:31:42,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:31:42,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-01-31 17:31:42,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:31:43,346 INFO L124 PetriNetUnfolderBase]: 949/1746 cut-off events. [2024-01-31 17:31:43,347 INFO L125 PetriNetUnfolderBase]: For 37990/38002 co-relation queries the response was YES. [2024-01-31 17:31:43,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9670 conditions, 1746 events. 949/1746 cut-off events. For 37990/38002 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 8492 event pairs, 80 based on Foata normal form. 84/1829 useless extension candidates. Maximal degree in co-relation 9625. Up to 333 conditions per place. [2024-01-31 17:31:43,360 INFO L140 encePairwiseOnDemand]: 20/26 looper letters, 92 selfloop transitions, 47 changer transitions 80/223 dead transitions. [2024-01-31 17:31:43,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 223 transitions, 2808 flow [2024-01-31 17:31:43,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-01-31 17:31:43,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-01-31 17:31:43,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 365 transitions. [2024-01-31 17:31:43,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51994301994302 [2024-01-31 17:31:43,363 INFO L175 Difference]: Start difference. First operand has 91 places, 56 transitions, 608 flow. Second operand 27 states and 365 transitions. [2024-01-31 17:31:43,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 223 transitions, 2808 flow [2024-01-31 17:31:43,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 223 transitions, 2199 flow, removed 292 selfloop flow, removed 12 redundant places. [2024-01-31 17:31:43,388 INFO L231 Difference]: Finished difference. Result has 117 places, 72 transitions, 990 flow [2024-01-31 17:31:43,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=990, PETRI_PLACES=117, PETRI_TRANSITIONS=72} [2024-01-31 17:31:43,389 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 89 predicate places. [2024-01-31 17:31:43,389 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 72 transitions, 990 flow [2024-01-31 17:31:43,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 13 states have internal predecessors, (106), 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 17:31:43,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:31:43,389 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:31:43,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-31 17:31:43,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-01-31 17:31:43,601 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:31:43,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:31:43,601 INFO L85 PathProgramCache]: Analyzing trace with hash 991667656, now seen corresponding path program 1 times [2024-01-31 17:31:43,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:31:43,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607276546] [2024-01-31 17:31:43,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:31:43,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:31:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:31:43,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:31:43,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:31:43,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607276546] [2024-01-31 17:31:43,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607276546] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:31:43,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611642437] [2024-01-31 17:31:43,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:31:43,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:31:43,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:31:43,725 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:31:43,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-31 17:31:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:31:43,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-31 17:31:43,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:31:43,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:31:43,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:31:43,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:31:43,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611642437] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:31:43,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:31:43,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-01-31 17:31:43,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217128740] [2024-01-31 17:31:43,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:31:43,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-01-31 17:31:43,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:31:43,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-01-31 17:31:43,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-01-31 17:31:43,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-01-31 17:31:43,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 72 transitions, 990 flow. Second operand has 15 states, 15 states have (on average 8.2) internal successors, (123), 15 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:31:43,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:31:43,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-01-31 17:31:43,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:31:44,537 INFO L124 PetriNetUnfolderBase]: 1273/2361 cut-off events. [2024-01-31 17:31:44,537 INFO L125 PetriNetUnfolderBase]: For 88956/88962 co-relation queries the response was YES. [2024-01-31 17:31:44,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15644 conditions, 2361 events. 1273/2361 cut-off events. For 88956/88962 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 12472 event pairs, 195 based on Foata normal form. 69/2429 useless extension candidates. Maximal degree in co-relation 15587. Up to 604 conditions per place. [2024-01-31 17:31:44,557 INFO L140 encePairwiseOnDemand]: 20/26 looper letters, 105 selfloop transitions, 51 changer transitions 67/227 dead transitions. [2024-01-31 17:31:44,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 227 transitions, 3560 flow [2024-01-31 17:31:44,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-01-31 17:31:44,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-01-31 17:31:44,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 340 transitions. [2024-01-31 17:31:44,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5230769230769231 [2024-01-31 17:31:44,560 INFO L175 Difference]: Start difference. First operand has 117 places, 72 transitions, 990 flow. Second operand 25 states and 340 transitions. [2024-01-31 17:31:44,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 227 transitions, 3560 flow [2024-01-31 17:31:44,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 227 transitions, 2986 flow, removed 271 selfloop flow, removed 13 redundant places. [2024-01-31 17:31:44,618 INFO L231 Difference]: Finished difference. Result has 135 places, 83 transitions, 1272 flow [2024-01-31 17:31:44,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1272, PETRI_PLACES=135, PETRI_TRANSITIONS=83} [2024-01-31 17:31:44,619 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 107 predicate places. [2024-01-31 17:31:44,619 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 83 transitions, 1272 flow [2024-01-31 17:31:44,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.2) internal successors, (123), 15 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:31:44,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:31:44,620 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:31:44,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-31 17:31:44,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:31:44,831 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:31:44,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:31:44,832 INFO L85 PathProgramCache]: Analyzing trace with hash -86334250, now seen corresponding path program 2 times [2024-01-31 17:31:44,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:31:44,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159855279] [2024-01-31 17:31:44,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:31:44,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:31:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:31:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:31:44,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:31:44,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159855279] [2024-01-31 17:31:44,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159855279] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:31:44,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131257543] [2024-01-31 17:31:44,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:31:44,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:31:44,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:31:44,941 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:31:44,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-31 17:31:44,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-31 17:31:44,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:31:44,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-31 17:31:44,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:31:45,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-31 17:31:45,069 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:31:45,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131257543] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:31:45,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 17:31:45,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 13 [2024-01-31 17:31:45,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136273495] [2024-01-31 17:31:45,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:31:45,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:31:45,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:31:45,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:31:45,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-01-31 17:31:45,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-01-31 17:31:45,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 83 transitions, 1272 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 17:31:45,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:31:45,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-01-31 17:31:45,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:31:45,484 INFO L124 PetriNetUnfolderBase]: 1291/2478 cut-off events. [2024-01-31 17:31:45,485 INFO L125 PetriNetUnfolderBase]: For 118724/118730 co-relation queries the response was YES. [2024-01-31 17:31:45,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17660 conditions, 2478 events. 1291/2478 cut-off events. For 118724/118730 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 13992 event pairs, 208 based on Foata normal form. 114/2591 useless extension candidates. Maximal degree in co-relation 17597. Up to 678 conditions per place. [2024-01-31 17:31:45,509 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 83 selfloop transitions, 103 changer transitions 0/190 dead transitions. [2024-01-31 17:31:45,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 190 transitions, 3762 flow [2024-01-31 17:31:45,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-31 17:31:45,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-31 17:31:45,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 182 transitions. [2024-01-31 17:31:45,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-01-31 17:31:45,512 INFO L175 Difference]: Start difference. First operand has 135 places, 83 transitions, 1272 flow. Second operand 13 states and 182 transitions. [2024-01-31 17:31:45,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 190 transitions, 3762 flow [2024-01-31 17:31:45,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 190 transitions, 3082 flow, removed 301 selfloop flow, removed 18 redundant places. [2024-01-31 17:31:45,628 INFO L231 Difference]: Finished difference. Result has 131 places, 132 transitions, 2728 flow [2024-01-31 17:31:45,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2728, PETRI_PLACES=131, PETRI_TRANSITIONS=132} [2024-01-31 17:31:45,628 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 103 predicate places. [2024-01-31 17:31:45,628 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 132 transitions, 2728 flow [2024-01-31 17:31:45,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 17:31:45,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:31:45,629 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:31:45,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-31 17:31:45,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:31:45,829 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:31:45,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:31:45,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1414438881, now seen corresponding path program 1 times [2024-01-31 17:31:45,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:31:45,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842498616] [2024-01-31 17:31:45,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:31:45,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:31:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:31:45,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:31:45,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:31:45,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842498616] [2024-01-31 17:31:45,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842498616] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:31:45,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906783505] [2024-01-31 17:31:45,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:31:45,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:31:45,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:31:45,964 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:31:45,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-31 17:31:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:31:46,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-31 17:31:46,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:31:46,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:31:46,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:31:46,210 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:31:46,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906783505] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:31:46,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:31:46,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-01-31 17:31:46,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567365551] [2024-01-31 17:31:46,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:31:46,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-01-31 17:31:46,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:31:46,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-01-31 17:31:46,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2024-01-31 17:31:46,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2024-01-31 17:31:46,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 132 transitions, 2728 flow. Second operand has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 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 17:31:46,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:31:46,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2024-01-31 17:31:46,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:31:47,639 INFO L124 PetriNetUnfolderBase]: 2677/4821 cut-off events. [2024-01-31 17:31:47,640 INFO L125 PetriNetUnfolderBase]: For 282118/282124 co-relation queries the response was YES. [2024-01-31 17:31:47,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38589 conditions, 4821 events. 2677/4821 cut-off events. For 282118/282124 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 27542 event pairs, 318 based on Foata normal form. 330/5150 useless extension candidates. Maximal degree in co-relation 38526. Up to 1281 conditions per place. [2024-01-31 17:31:47,679 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 248 selfloop transitions, 112 changer transitions 126/489 dead transitions. [2024-01-31 17:31:47,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 489 transitions, 11296 flow [2024-01-31 17:31:47,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-01-31 17:31:47,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2024-01-31 17:31:47,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 536 transitions. [2024-01-31 17:31:47,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47942754919499103 [2024-01-31 17:31:47,683 INFO L175 Difference]: Start difference. First operand has 131 places, 132 transitions, 2728 flow. Second operand 43 states and 536 transitions. [2024-01-31 17:31:47,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 489 transitions, 11296 flow [2024-01-31 17:31:47,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 489 transitions, 7616 flow, removed 1840 selfloop flow, removed 1 redundant places. [2024-01-31 17:31:47,943 INFO L231 Difference]: Finished difference. Result has 198 places, 173 transitions, 3812 flow [2024-01-31 17:31:47,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1724, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=3812, PETRI_PLACES=198, PETRI_TRANSITIONS=173} [2024-01-31 17:31:47,943 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 170 predicate places. [2024-01-31 17:31:47,944 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 173 transitions, 3812 flow [2024-01-31 17:31:47,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 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 17:31:47,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:31:47,944 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:31:47,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-01-31 17:31:48,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-01-31 17:31:48,152 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:31:48,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:31:48,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2022065917, now seen corresponding path program 3 times [2024-01-31 17:31:48,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:31:48,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944124140] [2024-01-31 17:31:48,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:31:48,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:31:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:31:48,266 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:31:48,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:31:48,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944124140] [2024-01-31 17:31:48,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944124140] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:31:48,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095656935] [2024-01-31 17:31:48,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 17:31:48,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:31:48,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:31:48,268 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:31:48,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-01-31 17:31:48,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-01-31 17:31:48,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:31:48,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-31 17:31:48,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:31:48,429 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-01-31 17:31:48,429 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:31:48,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095656935] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:31:48,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 17:31:48,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 14 [2024-01-31 17:31:48,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987646380] [2024-01-31 17:31:48,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:31:48,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:31:48,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:31:48,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:31:48,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-01-31 17:31:48,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-01-31 17:31:48,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 173 transitions, 3812 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 17:31:48,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:31:48,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-01-31 17:31:48,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:31:49,067 INFO L124 PetriNetUnfolderBase]: 2194/4068 cut-off events. [2024-01-31 17:31:49,068 INFO L125 PetriNetUnfolderBase]: For 183120/183134 co-relation queries the response was YES. [2024-01-31 17:31:49,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28770 conditions, 4068 events. 2194/4068 cut-off events. For 183120/183134 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 23369 event pairs, 452 based on Foata normal form. 81/4143 useless extension candidates. Maximal degree in co-relation 28680. Up to 1552 conditions per place. [2024-01-31 17:31:49,182 INFO L140 encePairwiseOnDemand]: 20/26 looper letters, 99 selfloop transitions, 118 changer transitions 25/246 dead transitions. [2024-01-31 17:31:49,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 246 transitions, 5764 flow [2024-01-31 17:31:49,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:31:49,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:31:49,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-01-31 17:31:49,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5470085470085471 [2024-01-31 17:31:49,188 INFO L175 Difference]: Start difference. First operand has 198 places, 173 transitions, 3812 flow. Second operand 9 states and 128 transitions. [2024-01-31 17:31:49,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 246 transitions, 5764 flow [2024-01-31 17:31:49,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 246 transitions, 4083 flow, removed 780 selfloop flow, removed 27 redundant places. [2024-01-31 17:31:49,420 INFO L231 Difference]: Finished difference. Result has 181 places, 180 transitions, 3153 flow [2024-01-31 17:31:49,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=2641, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3153, PETRI_PLACES=181, PETRI_TRANSITIONS=180} [2024-01-31 17:31:49,421 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 153 predicate places. [2024-01-31 17:31:49,421 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 180 transitions, 3153 flow [2024-01-31 17:31:49,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 17:31:49,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:31:49,421 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:31:49,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-01-31 17:31:49,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:31:49,621 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:31:49,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:31:49,622 INFO L85 PathProgramCache]: Analyzing trace with hash -14862065, now seen corresponding path program 4 times [2024-01-31 17:31:49,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:31:49,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126984947] [2024-01-31 17:31:49,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:31:49,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:31:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:31:49,716 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:31:49,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:31:49,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126984947] [2024-01-31 17:31:49,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126984947] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:31:49,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125711557] [2024-01-31 17:31:49,717 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-31 17:31:49,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:31:49,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:31:49,718 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:31:49,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-01-31 17:31:49,771 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-31 17:31:49,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:31:49,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2024-01-31 17:31:49,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:31:49,813 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:31:49,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:31:49,986 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:31:49,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125711557] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:31:49,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:31:49,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-01-31 17:31:49,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425988617] [2024-01-31 17:31:49,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:31:49,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-01-31 17:31:49,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:31:49,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-01-31 17:31:49,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-01-31 17:31:50,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-01-31 17:31:50,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 180 transitions, 3153 flow. Second operand has 20 states, 20 states have (on average 8.15) internal successors, (163), 20 states have internal predecessors, (163), 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 17:31:50,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:31:50,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-01-31 17:31:50,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:31:51,129 INFO L124 PetriNetUnfolderBase]: 2068/3983 cut-off events. [2024-01-31 17:31:51,130 INFO L125 PetriNetUnfolderBase]: For 114513/114527 co-relation queries the response was YES. [2024-01-31 17:31:51,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24456 conditions, 3983 events. 2068/3983 cut-off events. For 114513/114527 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 23111 event pairs, 264 based on Foata normal form. 312/4289 useless extension candidates. Maximal degree in co-relation 24379. Up to 942 conditions per place. [2024-01-31 17:31:51,155 INFO L140 encePairwiseOnDemand]: 20/26 looper letters, 148 selfloop transitions, 104 changer transitions 148/404 dead transitions. [2024-01-31 17:31:51,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 404 transitions, 6678 flow [2024-01-31 17:31:51,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-01-31 17:31:51,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-01-31 17:31:51,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 502 transitions. [2024-01-31 17:31:51,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080971659919028 [2024-01-31 17:31:51,157 INFO L175 Difference]: Start difference. First operand has 181 places, 180 transitions, 3153 flow. Second operand 38 states and 502 transitions. [2024-01-31 17:31:51,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 404 transitions, 6678 flow [2024-01-31 17:31:51,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 404 transitions, 6274 flow, removed 192 selfloop flow, removed 10 redundant places. [2024-01-31 17:31:51,342 INFO L231 Difference]: Finished difference. Result has 211 places, 165 transitions, 3034 flow [2024-01-31 17:31:51,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=2587, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3034, PETRI_PLACES=211, PETRI_TRANSITIONS=165} [2024-01-31 17:31:51,343 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 183 predicate places. [2024-01-31 17:31:51,343 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 165 transitions, 3034 flow [2024-01-31 17:31:51,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.15) internal successors, (163), 20 states have internal predecessors, (163), 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 17:31:51,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:31:51,343 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:31:51,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-01-31 17:31:51,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:31:51,553 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:31:51,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:31:51,553 INFO L85 PathProgramCache]: Analyzing trace with hash 577446016, now seen corresponding path program 5 times [2024-01-31 17:31:51,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:31:51,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083367772] [2024-01-31 17:31:51,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:31:51,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:31:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:31:51,669 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:31:51,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:31:51,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083367772] [2024-01-31 17:31:51,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083367772] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:31:51,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240378316] [2024-01-31 17:31:51,670 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-31 17:31:51,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:31:51,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:31:51,671 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:31:51,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-01-31 17:31:51,729 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-01-31 17:31:51,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:31:51,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 15 conjunts are in the unsatisfiable core [2024-01-31 17:31:51,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:31:51,764 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:31:51,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:31:51,895 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:31:51,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240378316] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:31:51,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:31:51,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2024-01-31 17:31:51,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468932677] [2024-01-31 17:31:51,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:31:51,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-01-31 17:31:51,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:31:51,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-01-31 17:31:51,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2024-01-31 17:31:51,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-01-31 17:31:51,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 165 transitions, 3034 flow. Second operand has 25 states, 25 states have (on average 8.08) internal successors, (202), 25 states have internal predecessors, (202), 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 17:31:51,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:31:51,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-01-31 17:31:51,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:31:53,623 INFO L124 PetriNetUnfolderBase]: 3247/6219 cut-off events. [2024-01-31 17:31:53,623 INFO L125 PetriNetUnfolderBase]: For 212773/212779 co-relation queries the response was YES. [2024-01-31 17:31:53,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39365 conditions, 6219 events. 3247/6219 cut-off events. For 212773/212779 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 36831 event pairs, 286 based on Foata normal form. 456/6669 useless extension candidates. Maximal degree in co-relation 39283. Up to 1503 conditions per place. [2024-01-31 17:31:53,671 INFO L140 encePairwiseOnDemand]: 20/26 looper letters, 219 selfloop transitions, 181 changer transitions 228/632 dead transitions. [2024-01-31 17:31:53,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 632 transitions, 10713 flow [2024-01-31 17:31:53,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-01-31 17:31:53,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-01-31 17:31:53,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 758 transitions. [2024-01-31 17:31:53,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5114709851551957 [2024-01-31 17:31:53,674 INFO L175 Difference]: Start difference. First operand has 211 places, 165 transitions, 3034 flow. Second operand 57 states and 758 transitions. [2024-01-31 17:31:53,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 632 transitions, 10713 flow [2024-01-31 17:31:54,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 632 transitions, 9978 flow, removed 320 selfloop flow, removed 20 redundant places. [2024-01-31 17:31:54,177 INFO L231 Difference]: Finished difference. Result has 258 places, 244 transitions, 5187 flow [2024-01-31 17:31:54,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=2682, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=5187, PETRI_PLACES=258, PETRI_TRANSITIONS=244} [2024-01-31 17:31:54,178 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 230 predicate places. [2024-01-31 17:31:54,178 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 244 transitions, 5187 flow [2024-01-31 17:31:54,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.08) internal successors, (202), 25 states have internal predecessors, (202), 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 17:31:54,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:31:54,178 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:31:54,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-01-31 17:31:54,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-01-31 17:31:54,385 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:31:54,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:31:54,385 INFO L85 PathProgramCache]: Analyzing trace with hash -735225116, now seen corresponding path program 2 times [2024-01-31 17:31:54,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:31:54,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234837357] [2024-01-31 17:31:54,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:31:54,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:31:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:31:54,625 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:31:54,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:31:54,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234837357] [2024-01-31 17:31:54,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234837357] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:31:54,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825146987] [2024-01-31 17:31:54,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:31:54,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:31:54,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:31:54,627 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:31:54,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-01-31 17:31:54,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:31:54,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:31:54,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 20 conjunts are in the unsatisfiable core [2024-01-31 17:31:54,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:31:54,796 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:31:54,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:31:55,089 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:31:55,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825146987] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:31:55,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:31:55,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 40 [2024-01-31 17:31:55,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491178563] [2024-01-31 17:31:55,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:31:55,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-01-31 17:31:55,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:31:55,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-01-31 17:31:55,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1354, Unknown=0, NotChecked=0, Total=1640 [2024-01-31 17:31:55,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2024-01-31 17:31:55,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 244 transitions, 5187 flow. Second operand has 41 states, 41 states have (on average 6.902439024390244) internal successors, (283), 41 states have internal predecessors, (283), 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 17:31:55,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:31:55,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2024-01-31 17:31:55,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:31:57,846 INFO L124 PetriNetUnfolderBase]: 4324/8099 cut-off events. [2024-01-31 17:31:57,846 INFO L125 PetriNetUnfolderBase]: For 279193/279199 co-relation queries the response was YES. [2024-01-31 17:31:58,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52000 conditions, 8099 events. 4324/8099 cut-off events. For 279193/279199 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 47420 event pairs, 385 based on Foata normal form. 276/8374 useless extension candidates. Maximal degree in co-relation 51895. Up to 1791 conditions per place. [2024-01-31 17:31:58,024 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 287 selfloop transitions, 245 changer transitions 188/723 dead transitions. [2024-01-31 17:31:58,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 723 transitions, 13514 flow [2024-01-31 17:31:58,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-01-31 17:31:58,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2024-01-31 17:31:58,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 712 transitions. [2024-01-31 17:31:58,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47214854111405835 [2024-01-31 17:31:58,027 INFO L175 Difference]: Start difference. First operand has 258 places, 244 transitions, 5187 flow. Second operand 58 states and 712 transitions. [2024-01-31 17:31:58,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 723 transitions, 13514 flow [2024-01-31 17:31:58,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 723 transitions, 11493 flow, removed 968 selfloop flow, removed 30 redundant places. [2024-01-31 17:31:58,689 INFO L231 Difference]: Finished difference. Result has 294 places, 316 transitions, 6932 flow [2024-01-31 17:31:58,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=4320, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=6932, PETRI_PLACES=294, PETRI_TRANSITIONS=316} [2024-01-31 17:31:58,690 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 266 predicate places. [2024-01-31 17:31:58,690 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 316 transitions, 6932 flow [2024-01-31 17:31:58,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.902439024390244) internal successors, (283), 41 states have internal predecessors, (283), 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 17:31:58,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:31:58,690 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:31:58,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-01-31 17:31:58,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-01-31 17:31:58,901 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:31:58,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:31:58,901 INFO L85 PathProgramCache]: Analyzing trace with hash -682713620, now seen corresponding path program 6 times [2024-01-31 17:31:58,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:31:58,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977783061] [2024-01-31 17:31:58,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:31:58,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:31:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:31:59,180 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:31:59,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:31:59,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977783061] [2024-01-31 17:31:59,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977783061] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:31:59,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887230584] [2024-01-31 17:31:59,181 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-31 17:31:59,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:31:59,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:31:59,183 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:31:59,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-01-31 17:31:59,245 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-01-31 17:31:59,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:31:59,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-31 17:31:59,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:31:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-01-31 17:31:59,307 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:31:59,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887230584] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:31:59,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 17:31:59,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [20] total 24 [2024-01-31 17:31:59,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694451827] [2024-01-31 17:31:59,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:31:59,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:31:59,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:31:59,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:31:59,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2024-01-31 17:31:59,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 26 [2024-01-31 17:31:59,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 316 transitions, 6932 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 17:31:59,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:31:59,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 26 [2024-01-31 17:31:59,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:32:00,254 INFO L124 PetriNetUnfolderBase]: 2660/5614 cut-off events. [2024-01-31 17:32:00,254 INFO L125 PetriNetUnfolderBase]: For 161120/161442 co-relation queries the response was YES. [2024-01-31 17:32:00,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30954 conditions, 5614 events. 2660/5614 cut-off events. For 161120/161442 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 35261 event pairs, 878 based on Foata normal form. 98/5577 useless extension candidates. Maximal degree in co-relation 30845. Up to 2040 conditions per place. [2024-01-31 17:32:00,310 INFO L140 encePairwiseOnDemand]: 22/26 looper letters, 26 selfloop transitions, 51 changer transitions 22/329 dead transitions. [2024-01-31 17:32:00,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 329 transitions, 7120 flow [2024-01-31 17:32:00,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:32:00,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:32:00,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2024-01-31 17:32:00,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-01-31 17:32:00,312 INFO L175 Difference]: Start difference. First operand has 294 places, 316 transitions, 6932 flow. Second operand 5 states and 65 transitions. [2024-01-31 17:32:00,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 329 transitions, 7120 flow [2024-01-31 17:32:01,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 329 transitions, 5970 flow, removed 417 selfloop flow, removed 43 redundant places. [2024-01-31 17:32:01,010 INFO L231 Difference]: Finished difference. Result has 248 places, 293 transitions, 5450 flow [2024-01-31 17:32:01,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=5768, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5450, PETRI_PLACES=248, PETRI_TRANSITIONS=293} [2024-01-31 17:32:01,010 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 220 predicate places. [2024-01-31 17:32:01,010 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 293 transitions, 5450 flow [2024-01-31 17:32:01,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 17:32:01,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:32:01,011 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:32:01,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-01-31 17:32:01,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-01-31 17:32:01,211 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:32:01,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:32:01,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1044286402, now seen corresponding path program 3 times [2024-01-31 17:32:01,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:32:01,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90268761] [2024-01-31 17:32:01,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:32:01,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:32:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:32:01,499 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:32:01,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:32:01,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90268761] [2024-01-31 17:32:01,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90268761] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:32:01,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272899627] [2024-01-31 17:32:01,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 17:32:01,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:32:01,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:32:01,500 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:32:01,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-01-31 17:32:01,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-01-31 17:32:01,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:32:01,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 24 conjunts are in the unsatisfiable core [2024-01-31 17:32:01,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:32:01,662 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:32:01,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:32:01,920 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:32:01,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272899627] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:32:01,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:32:01,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 33 [2024-01-31 17:32:01,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141720008] [2024-01-31 17:32:01,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:32:01,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-01-31 17:32:01,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:32:01,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-01-31 17:32:01,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=922, Unknown=0, NotChecked=0, Total=1122 [2024-01-31 17:32:01,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2024-01-31 17:32:01,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 293 transitions, 5450 flow. Second operand has 34 states, 34 states have (on average 7.029411764705882) internal successors, (239), 34 states have internal predecessors, (239), 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 17:32:01,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:32:01,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2024-01-31 17:32:01,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:32:04,546 INFO L124 PetriNetUnfolderBase]: 4279/8034 cut-off events. [2024-01-31 17:32:04,547 INFO L125 PetriNetUnfolderBase]: For 240310/240316 co-relation queries the response was YES. [2024-01-31 17:32:04,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48001 conditions, 8034 events. 4279/8034 cut-off events. For 240310/240316 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 46225 event pairs, 308 based on Foata normal form. 213/8246 useless extension candidates. Maximal degree in co-relation 47916. Up to 1803 conditions per place. [2024-01-31 17:32:04,601 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 232 selfloop transitions, 251 changer transitions 246/732 dead transitions. [2024-01-31 17:32:04,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 732 transitions, 12033 flow [2024-01-31 17:32:04,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-01-31 17:32:04,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2024-01-31 17:32:04,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 730 transitions. [2024-01-31 17:32:04,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2024-01-31 17:32:04,603 INFO L175 Difference]: Start difference. First operand has 248 places, 293 transitions, 5450 flow. Second operand 60 states and 730 transitions. [2024-01-31 17:32:04,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 732 transitions, 12033 flow [2024-01-31 17:32:05,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 732 transitions, 11831 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-01-31 17:32:05,184 INFO L231 Difference]: Finished difference. Result has 308 places, 315 transitions, 6688 flow [2024-01-31 17:32:05,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=5339, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=6688, PETRI_PLACES=308, PETRI_TRANSITIONS=315} [2024-01-31 17:32:05,185 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 280 predicate places. [2024-01-31 17:32:05,185 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 315 transitions, 6688 flow [2024-01-31 17:32:05,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.029411764705882) internal successors, (239), 34 states have internal predecessors, (239), 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 17:32:05,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:32:05,185 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:32:05,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-01-31 17:32:05,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-01-31 17:32:05,386 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:32:05,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:32:05,386 INFO L85 PathProgramCache]: Analyzing trace with hash 501274353, now seen corresponding path program 4 times [2024-01-31 17:32:05,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:32:05,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748962659] [2024-01-31 17:32:05,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:32:05,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:32:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 17:32:05,400 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 17:32:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 17:32:05,433 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 17:32:05,433 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 17:32:05,434 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-01-31 17:32:05,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-01-31 17:32:05,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-01-31 17:32:05,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-01-31 17:32:05,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-31 17:32:05,436 INFO L445 BasicCegarLoop]: Path program histogram: [6, 4, 2, 2, 2, 1] [2024-01-31 17:32:05,441 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 17:32:05,441 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 17:32:05,509 INFO L503 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-01-31 17:32:05,509 INFO L504 ceAbstractionStarter]: WitnessConsidered=1 [2024-01-31 17:32:05,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 05:32:05 BasicIcfg [2024-01-31 17:32:05,514 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 17:32:05,514 INFO L158 Benchmark]: Toolchain (without parser) took 27559.34ms. Allocated memory was 142.6MB in the beginning and 4.5GB in the end (delta: 4.3GB). Free memory was 98.3MB in the beginning and 3.5GB in the end (delta: -3.4GB). Peak memory consumption was 930.8MB. Max. memory is 16.1GB. [2024-01-31 17:32:05,514 INFO L158 Benchmark]: Witness Parser took 0.21ms. Allocated memory is still 109.1MB. Free memory is still 67.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 17:32:05,514 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory was 77.0MB in the beginning and 77.0MB in the end (delta: 70.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 17:32:05,515 INFO L158 Benchmark]: CACSL2BoogieTranslator took 610.24ms. Allocated memory is still 142.6MB. Free memory was 98.3MB in the beginning and 64.2MB in the end (delta: 34.1MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-01-31 17:32:05,515 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.12ms. Allocated memory is still 142.6MB. Free memory was 64.2MB in the beginning and 62.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 17:32:05,515 INFO L158 Benchmark]: Boogie Preprocessor took 37.11ms. Allocated memory is still 142.6MB. Free memory was 62.1MB in the beginning and 60.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 17:32:05,515 INFO L158 Benchmark]: RCFGBuilder took 375.68ms. Allocated memory is still 142.6MB. Free memory was 60.0MB in the beginning and 40.0MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-01-31 17:32:05,515 INFO L158 Benchmark]: TraceAbstraction took 26496.94ms. Allocated memory was 142.6MB in the beginning and 4.5GB in the end (delta: 4.3GB). Free memory was 39.5MB in the beginning and 3.5GB in the end (delta: -3.4GB). Peak memory consumption was 872.1MB. Max. memory is 16.1GB. [2024-01-31 17:32:05,516 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.21ms. Allocated memory is still 109.1MB. Free memory is still 67.0MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory was 77.0MB in the beginning and 77.0MB in the end (delta: 70.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 610.24ms. Allocated memory is still 142.6MB. Free memory was 98.3MB in the beginning and 64.2MB in the end (delta: 34.1MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.12ms. Allocated memory is still 142.6MB. Free memory was 64.2MB in the beginning and 62.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.11ms. Allocated memory is still 142.6MB. Free memory was 62.1MB in the beginning and 60.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 375.68ms. Allocated memory is still 142.6MB. Free memory was 60.0MB in the beginning and 40.0MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 26496.94ms. Allocated memory was 142.6MB in the beginning and 4.5GB in the end (delta: 4.3GB). Free memory was 39.5MB in the beginning and 3.5GB in the end (delta: -3.4GB). Peak memory consumption was 872.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, argc=51, argv={49:50}, i=3, id1={5:0}, id2={3:0}, j=6] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, i=3, id1={5:0}, id2={3:0}, j=6, k=0] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*10 +6); VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, condI=0, i=7, id1={5:0}, id2={3:0}, j=6, k=0, k=1] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=5] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=5] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=5] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=5] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=6] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=6] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=6] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=7] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=7] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=8] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=8] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=8] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=8, k=9] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=9] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=9] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] [L719] 0 int condJ = j >= (2*10 +6); VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, condI=0, condJ=1, i=25, id1={5:0}, id2={3:0}, j=26, k=9, k=9] [L721] COND TRUE 0 condI || condJ VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, condI=0, condJ=1, i=25, id1={5:0}, id2={3:0}, j=26, k=9, k=9] [L722] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[condI]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[condJ]]],BinaryExpression[COMPLEQ,IdentifierExpression[condI],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[condJ],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[condI],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[condI],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[condJ],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[condJ],IntegerLiteral[1]]]]]] VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, condI=0, condJ=1, i=25, id1={5:0}, id2={3:0}, j=26, k=9, k=9] [L722] 0 reach_error() VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, condI=0, condJ=1, i=25, id1={5:0}, id2={3:0}, j=26, k=9, k=9] - UnprovableResult [Line: 722]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 36 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 26.3s, OverallIterations: 17, TraceHistogramMax: 10, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 18.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5118 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5044 mSDsluCounter, 459 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 443 mSDsCounter, 347 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6160 IncrementalHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 347 mSolverCounterUnsat, 16 mSDtfsCounter, 6160 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1080 GetRequests, 523 SyntacticMatches, 15 SemanticMatches, 542 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9086 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6932occurred in iteration=14, InterpolantAutomatonStates: 401, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 853 NumberOfCodeBlocks, 801 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 1006 ConstructedInterpolants, 0 QuantifiedInterpolants, 3679 SizeOfPredicates, 76 NumberOfNonLiveVariables, 1438 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 35 InterpolantComputations, 8 PerfectInterpolantSequences, 167/1477 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-01-31 17:32:05,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE