./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c --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/popl20-simple-array-sum.wvr.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/weaver/popl20-simple-array-sum.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-simple-array-sum.wvr.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 17:18:08,953 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:18:09,017 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:18:09,022 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:18:09,023 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:18:09,047 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:18:09,047 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:18:09,048 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:18:09,048 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:18:09,053 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:18:09,053 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:18:09,054 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:18:09,055 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:18:09,056 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:18:09,056 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:18:09,056 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:18:09,056 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:18:09,057 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:18:09,057 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:18:09,057 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:18:09,057 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:18:09,058 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:18:09,058 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:18:09,058 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:18:09,058 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:18:09,058 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:18:09,059 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:18:09,059 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:18:09,059 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:18:09,060 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:18:09,060 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:18:09,061 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:18:09,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:18:09,061 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:18:09,061 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:18:09,061 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:18:09,062 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:18:09,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:18:09,062 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:18:09,062 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:18:09,062 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:18:09,063 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:18:09,063 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:18:09,063 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:18:09,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:18:09,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:18:09,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:18:09,337 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:18:09,337 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:18:09,338 INFO L431 ainManager$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/popl20-simple-array-sum.wvr.yml/witness.yml [2024-01-31 17:18:09,516 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:18:09,516 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:18:09,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2024-01-31 17:18:10,488 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:18:10,668 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:18:10,669 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2024-01-31 17:18:10,677 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4a0e5f32/8beb4c3ac7044af68718ee010442b503/FLAG21d685c61 [2024-01-31 17:18:10,690 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4a0e5f32/8beb4c3ac7044af68718ee010442b503 [2024-01-31 17:18:10,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:18:10,693 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:18:10,694 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:18:10,694 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:18:10,698 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:18:10,699 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:18:09" (1/2) ... [2024-01-31 17:18:10,700 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8cf8cce and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:18:10, skipping insertion in model container [2024-01-31 17:18:10,700 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:18:09" (1/2) ... [2024-01-31 17:18:10,701 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2e132f91 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:18:10, skipping insertion in model container [2024-01-31 17:18:10,701 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:18:10" (2/2) ... [2024-01-31 17:18:10,702 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8cf8cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:18:10, skipping insertion in model container [2024-01-31 17:18:10,702 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:18:10" (2/2) ... [2024-01-31 17:18:10,703 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:18:10,749 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:18:10,750 INFO L98 nessWitnessExtractor]: Location invariant after [L74-L74] ((0 <= p) && ((unsigned long )_argptr == 0UL)) && (((((((((0 <= i && i <= 1) && (i == 0 || i == 1)) || (0 == i && i == 0)) || (0 <= i && i <= 2147483646)) || (0 <= i && i <= 6)) || (0 <= i && i <= 5)) || (0 <= i && i <= 4)) || ((0 <= i && i <= 3) && i <= 65535)) || ((0 <= i && i <= 2) && i <= 255)) [2024-01-31 17:18:10,750 INFO L98 nessWitnessExtractor]: Location invariant after [L71-L71] (unsigned long )_argptr == 0UL [2024-01-31 17:18:10,789 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:18:10,975 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c[2729,2742] [2024-01-31 17:18:10,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:18:10,997 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:18:11,018 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 17:18:11,019 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-01-31 17:18:11,032 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c[2729,2742] [2024-01-31 17:18:11,041 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:18:11,054 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:18:11,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:18:11 WrapperNode [2024-01-31 17:18:11,054 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:18:11,055 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:18:11,055 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:18:11,055 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:18:11,061 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:18:11" (1/1) ... [2024-01-31 17:18:11,066 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:18:11" (1/1) ... [2024-01-31 17:18:11,082 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 127 [2024-01-31 17:18:11,082 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:18:11,083 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:18:11,083 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:18:11,083 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:18:11,092 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:18:11" (1/1) ... [2024-01-31 17:18:11,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:18:11" (1/1) ... [2024-01-31 17:18:11,094 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:18:11" (1/1) ... [2024-01-31 17:18:11,107 INFO L175 MemorySlicer]: Split 14 memory accesses to 5 slices as follows [2, 2, 2, 2, 6]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 1, 3]. [2024-01-31 17:18:11,108 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:18:11" (1/1) ... [2024-01-31 17:18:11,108 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:18:11" (1/1) ... [2024-01-31 17:18:11,112 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:18:11" (1/1) ... [2024-01-31 17:18:11,115 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:18:11" (1/1) ... [2024-01-31 17:18:11,117 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:18:11" (1/1) ... [2024-01-31 17:18:11,118 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:18:11" (1/1) ... [2024-01-31 17:18:11,120 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:18:11,120 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:18:11,120 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:18:11,120 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:18:11,121 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:18:11" (1/1) ... [2024-01-31 17:18:11,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:18:11,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:18:11,148 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 17:18:11,150 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 17:18:11,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:18:11,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:18:11,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:18:11,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:18:11,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:18:11,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:18:11,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:18:11,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 17:18:11,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 17:18:11,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 17:18:11,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 17:18:11,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 17:18:11,185 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 17:18:11,185 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 17:18:11,185 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 17:18:11,185 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 17:18:11,185 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 17:18:11,185 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 17:18:11,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:18:11,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:18:11,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:18:11,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:18:11,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:18:11,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:18:11,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:18:11,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-31 17:18:11,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:18:11,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:18:11,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:18:11,188 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 17:18:11,270 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:18:11,272 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:18:11,499 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:18:11,499 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:18:11,640 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:18:11,641 INFO L320 CfgBuilder]: Removed 5 assume(true) statements. [2024-01-31 17:18:11,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:18:11 BoogieIcfgContainer [2024-01-31 17:18:11,641 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:18:11,643 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:18:11,644 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:18:11,646 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:18:11,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:18:09" (1/4) ... [2024-01-31 17:18:11,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b50211 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:18:11, skipping insertion in model container [2024-01-31 17:18:11,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:18:10" (2/4) ... [2024-01-31 17:18:11,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b50211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:18:11, skipping insertion in model container [2024-01-31 17:18:11,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:18:11" (3/4) ... [2024-01-31 17:18:11,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b50211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:18:11, skipping insertion in model container [2024-01-31 17:18:11,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:18:11" (4/4) ... [2024-01-31 17:18:11,649 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2024-01-31 17:18:11,663 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:18:11,663 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 17:18:11,663 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:18:11,696 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-31 17:18:11,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 40 transitions, 101 flow [2024-01-31 17:18:11,748 INFO L124 PetriNetUnfolderBase]: 6/37 cut-off events. [2024-01-31 17:18:11,749 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 17:18:11,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 37 events. 6/37 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-01-31 17:18:11,754 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 40 transitions, 101 flow [2024-01-31 17:18:11,756 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 36 transitions, 90 flow [2024-01-31 17:18:11,769 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:18:11,776 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;@424802a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:18:11,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-31 17:18:11,793 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:18:11,793 INFO L124 PetriNetUnfolderBase]: 6/35 cut-off events. [2024-01-31 17:18:11,793 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 17:18:11,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:18:11,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:18:11,794 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:18:11,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:18:11,799 INFO L85 PathProgramCache]: Analyzing trace with hash -424678971, now seen corresponding path program 1 times [2024-01-31 17:18:11,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:18:11,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454180837] [2024-01-31 17:18:11,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:18:11,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:18:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:18:12,540 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 17:18:12,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:18:12,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454180837] [2024-01-31 17:18:12,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454180837] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:18:12,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:18:12,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:18:12,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259017634] [2024-01-31 17:18:12,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:18:12,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:18:12,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:18:12,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:18:12,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:18:12,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-01-31 17:18:12,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 17:18:12,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:18:12,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-01-31 17:18:12,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:18:12,876 INFO L124 PetriNetUnfolderBase]: 725/1163 cut-off events. [2024-01-31 17:18:12,877 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2024-01-31 17:18:12,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2282 conditions, 1163 events. 725/1163 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5045 event pairs, 382 based on Foata normal form. 1/1004 useless extension candidates. Maximal degree in co-relation 996. Up to 651 conditions per place. [2024-01-31 17:18:12,889 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 47 selfloop transitions, 5 changer transitions 1/61 dead transitions. [2024-01-31 17:18:12,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 61 transitions, 264 flow [2024-01-31 17:18:12,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:18:12,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:18:12,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-01-31 17:18:12,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6125 [2024-01-31 17:18:12,901 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 90 flow. Second operand 4 states and 98 transitions. [2024-01-31 17:18:12,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 61 transitions, 264 flow [2024-01-31 17:18:12,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 61 transitions, 240 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 17:18:12,909 INFO L231 Difference]: Finished difference. Result has 39 places, 40 transitions, 112 flow [2024-01-31 17:18:12,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=39, PETRI_TRANSITIONS=40} [2024-01-31 17:18:12,915 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2024-01-31 17:18:12,915 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 40 transitions, 112 flow [2024-01-31 17:18:12,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 17:18:12,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:18:12,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:18:12,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:18:12,916 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:18:12,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:18:12,917 INFO L85 PathProgramCache]: Analyzing trace with hash 53151388, now seen corresponding path program 1 times [2024-01-31 17:18:12,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:18:12,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491165756] [2024-01-31 17:18:12,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:18:12,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:18:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:18:13,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:18:13,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:18:13,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491165756] [2024-01-31 17:18:13,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491165756] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:18:13,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335200673] [2024-01-31 17:18:13,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:18:13,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:18:13,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:18:13,068 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 17:18:13,092 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 17:18:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:18:13,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjunts are in the unsatisfiable core [2024-01-31 17:18:13,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:18:13,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:18:13,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:18:13,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:18:13,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335200673] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-31 17:18:13,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-31 17:18:13,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-01-31 17:18:13,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096816287] [2024-01-31 17:18:13,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:18:13,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:18:13,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:18:13,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:18:13,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:18:13,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-01-31 17:18:13,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 40 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 17:18:13,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:18:13,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-01-31 17:18:13,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:18:13,522 INFO L124 PetriNetUnfolderBase]: 1400/2265 cut-off events. [2024-01-31 17:18:13,522 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2024-01-31 17:18:13,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4714 conditions, 2265 events. 1400/2265 cut-off events. For 309/309 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 11659 event pairs, 942 based on Foata normal form. 0/2111 useless extension candidates. Maximal degree in co-relation 3688. Up to 1007 conditions per place. [2024-01-31 17:18:13,534 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 54 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2024-01-31 17:18:13,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 68 transitions, 306 flow [2024-01-31 17:18:13,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:18:13,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:18:13,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-01-31 17:18:13,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-01-31 17:18:13,538 INFO L175 Difference]: Start difference. First operand has 39 places, 40 transitions, 112 flow. Second operand 5 states and 112 transitions. [2024-01-31 17:18:13,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 68 transitions, 306 flow [2024-01-31 17:18:13,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 68 transitions, 298 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 17:18:13,542 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 136 flow [2024-01-31 17:18:13,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=136, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2024-01-31 17:18:13,542 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2024-01-31 17:18:13,542 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 136 flow [2024-01-31 17:18:13,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 17:18:13,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:18:13,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:18:13,573 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 17:18:13,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:18:13,754 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:18:13,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:18:13,755 INFO L85 PathProgramCache]: Analyzing trace with hash -451192813, now seen corresponding path program 1 times [2024-01-31 17:18:13,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:18:13,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562861423] [2024-01-31 17:18:13,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:18:13,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:18:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:18:13,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:18:13,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:18:13,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562861423] [2024-01-31 17:18:13,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562861423] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:18:13,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:18:13,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:18:13,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522908384] [2024-01-31 17:18:13,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:18:13,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:18:13,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:18:13,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:18:13,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:18:13,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-01-31 17:18:13,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 17:18:13,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:18:13,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-01-31 17:18:13,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:18:14,112 INFO L124 PetriNetUnfolderBase]: 1416/2410 cut-off events. [2024-01-31 17:18:14,112 INFO L125 PetriNetUnfolderBase]: For 249/249 co-relation queries the response was YES. [2024-01-31 17:18:14,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4698 conditions, 2410 events. 1416/2410 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 13310 event pairs, 808 based on Foata normal form. 116/2378 useless extension candidates. Maximal degree in co-relation 3323. Up to 1016 conditions per place. [2024-01-31 17:18:14,126 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 63 selfloop transitions, 9 changer transitions 0/80 dead transitions. [2024-01-31 17:18:14,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 80 transitions, 374 flow [2024-01-31 17:18:14,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:18:14,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:18:14,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-01-31 17:18:14,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5708333333333333 [2024-01-31 17:18:14,127 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 136 flow. Second operand 6 states and 137 transitions. [2024-01-31 17:18:14,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 80 transitions, 374 flow [2024-01-31 17:18:14,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 80 transitions, 370 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 17:18:14,129 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 162 flow [2024-01-31 17:18:14,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-01-31 17:18:14,130 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 10 predicate places. [2024-01-31 17:18:14,130 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 162 flow [2024-01-31 17:18:14,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 17:18:14,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:18:14,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:18:14,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:18:14,130 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:18:14,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:18:14,131 INFO L85 PathProgramCache]: Analyzing trace with hash 105288168, now seen corresponding path program 1 times [2024-01-31 17:18:14,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:18:14,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885185006] [2024-01-31 17:18:14,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:18:14,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:18:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:18:14,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:18:14,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:18:14,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885185006] [2024-01-31 17:18:14,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885185006] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:18:14,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022229703] [2024-01-31 17:18:14,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:18:14,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:18:14,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:18:14,198 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 17:18:14,239 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 17:18:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:18:14,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-31 17:18:14,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:18:14,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:18:14,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:18:14,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:18:14,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022229703] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-31 17:18:14,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-31 17:18:14,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-01-31 17:18:14,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510113355] [2024-01-31 17:18:14,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:18:14,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:18:14,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:18:14,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:18:14,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:18:14,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-01-31 17:18:14,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 17:18:14,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:18:14,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-01-31 17:18:14,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:18:14,556 INFO L124 PetriNetUnfolderBase]: 1268/2156 cut-off events. [2024-01-31 17:18:14,556 INFO L125 PetriNetUnfolderBase]: For 953/953 co-relation queries the response was YES. [2024-01-31 17:18:14,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4801 conditions, 2156 events. 1268/2156 cut-off events. For 953/953 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 11668 event pairs, 722 based on Foata normal form. 108/2128 useless extension candidates. Maximal degree in co-relation 2855. Up to 729 conditions per place. [2024-01-31 17:18:14,566 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 64 selfloop transitions, 5 changer transitions 4/81 dead transitions. [2024-01-31 17:18:14,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 81 transitions, 408 flow [2024-01-31 17:18:14,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:18:14,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:18:14,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-01-31 17:18:14,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-01-31 17:18:14,567 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 162 flow. Second operand 5 states and 124 transitions. [2024-01-31 17:18:14,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 81 transitions, 408 flow [2024-01-31 17:18:14,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 81 transitions, 397 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-31 17:18:14,570 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 175 flow [2024-01-31 17:18:14,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-01-31 17:18:14,570 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2024-01-31 17:18:14,570 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 175 flow [2024-01-31 17:18:14,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 17:18:14,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:18:14,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:18:14,581 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 17:18:14,781 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,SelfDestructingSolverStorable3 [2024-01-31 17:18:14,782 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:18:14,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:18:14,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1496011528, now seen corresponding path program 1 times [2024-01-31 17:18:14,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:18:14,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309542225] [2024-01-31 17:18:14,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:18:14,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:18:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:18:14,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:18:14,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:18:14,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309542225] [2024-01-31 17:18:14,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309542225] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:18:14,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093902080] [2024-01-31 17:18:14,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:18:14,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:18:14,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:18:14,869 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 17:18:14,914 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 17:18:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:18:14,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-31 17:18:14,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:18:15,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:18:15,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:18:15,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:18:15,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093902080] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-31 17:18:15,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-31 17:18:15,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-01-31 17:18:15,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107653693] [2024-01-31 17:18:15,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:18:15,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:18:15,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:18:15,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:18:15,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:18:15,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-01-31 17:18:15,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 175 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 17:18:15,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:18:15,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-01-31 17:18:15,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:18:15,315 INFO L124 PetriNetUnfolderBase]: 1407/2339 cut-off events. [2024-01-31 17:18:15,315 INFO L125 PetriNetUnfolderBase]: For 2808/2808 co-relation queries the response was YES. [2024-01-31 17:18:15,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5853 conditions, 2339 events. 1407/2339 cut-off events. For 2808/2808 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12404 event pairs, 558 based on Foata normal form. 0/2120 useless extension candidates. Maximal degree in co-relation 3322. Up to 602 conditions per place. [2024-01-31 17:18:15,328 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 76 selfloop transitions, 8 changer transitions 0/91 dead transitions. [2024-01-31 17:18:15,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 91 transitions, 493 flow [2024-01-31 17:18:15,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:18:15,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:18:15,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-01-31 17:18:15,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-01-31 17:18:15,329 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 175 flow. Second operand 6 states and 140 transitions. [2024-01-31 17:18:15,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 91 transitions, 493 flow [2024-01-31 17:18:15,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 91 transitions, 454 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-01-31 17:18:15,332 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 187 flow [2024-01-31 17:18:15,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=187, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-01-31 17:18:15,332 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 16 predicate places. [2024-01-31 17:18:15,332 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 187 flow [2024-01-31 17:18:15,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 17:18:15,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:18:15,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:18:15,358 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 17:18:15,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:18:15,543 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:18:15,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:18:15,544 INFO L85 PathProgramCache]: Analyzing trace with hash 866381750, now seen corresponding path program 1 times [2024-01-31 17:18:15,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:18:15,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250017237] [2024-01-31 17:18:15,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:18:15,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:18:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:18:15,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:18:15,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:18:15,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250017237] [2024-01-31 17:18:15,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250017237] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:18:15,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:18:15,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:18:15,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269624926] [2024-01-31 17:18:15,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:18:15,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:18:15,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:18:15,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:18:15,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:18:15,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-01-31 17:18:15,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 187 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 17:18:15,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:18:15,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-01-31 17:18:15,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:18:15,791 INFO L124 PetriNetUnfolderBase]: 926/1507 cut-off events. [2024-01-31 17:18:15,791 INFO L125 PetriNetUnfolderBase]: For 1493/1493 co-relation queries the response was YES. [2024-01-31 17:18:15,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3992 conditions, 1507 events. 926/1507 cut-off events. For 1493/1493 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6990 event pairs, 620 based on Foata normal form. 0/1397 useless extension candidates. Maximal degree in co-relation 3029. Up to 985 conditions per place. [2024-01-31 17:18:15,798 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 28 selfloop transitions, 4 changer transitions 33/73 dead transitions. [2024-01-31 17:18:15,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 73 transitions, 385 flow [2024-01-31 17:18:15,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:18:15,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:18:15,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-01-31 17:18:15,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-01-31 17:18:15,799 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 187 flow. Second operand 6 states and 124 transitions. [2024-01-31 17:18:15,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 73 transitions, 385 flow [2024-01-31 17:18:15,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 73 transitions, 382 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:18:15,801 INFO L231 Difference]: Finished difference. Result has 62 places, 40 transitions, 157 flow [2024-01-31 17:18:15,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=157, PETRI_PLACES=62, PETRI_TRANSITIONS=40} [2024-01-31 17:18:15,802 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 22 predicate places. [2024-01-31 17:18:15,802 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 40 transitions, 157 flow [2024-01-31 17:18:15,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 17:18:15,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:18:15,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:18:15,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:18:15,803 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:18:15,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:18:15,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1551400253, now seen corresponding path program 1 times [2024-01-31 17:18:15,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:18:15,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965809442] [2024-01-31 17:18:15,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:18:15,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:18:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:18:15,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:18:15,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:18:15,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965809442] [2024-01-31 17:18:15,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965809442] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:18:15,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401417970] [2024-01-31 17:18:15,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:18:15,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:18:15,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:18:15,889 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 17:18:15,916 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 17:18:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:18:15,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-31 17:18:15,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:18:16,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:18:16,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:18:16,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:18:16,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401417970] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-31 17:18:16,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-31 17:18:16,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-01-31 17:18:16,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134603987] [2024-01-31 17:18:16,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:18:16,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:18:16,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:18:16,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:18:16,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:18:16,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-01-31 17:18:16,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 40 transitions, 157 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 17:18:16,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:18:16,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-01-31 17:18:16,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:18:16,206 INFO L124 PetriNetUnfolderBase]: 815/1387 cut-off events. [2024-01-31 17:18:16,206 INFO L125 PetriNetUnfolderBase]: For 1512/1512 co-relation queries the response was YES. [2024-01-31 17:18:16,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3713 conditions, 1387 events. 815/1387 cut-off events. For 1512/1512 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 6683 event pairs, 323 based on Foata normal form. 52/1355 useless extension candidates. Maximal degree in co-relation 3680. Up to 577 conditions per place. [2024-01-31 17:18:16,214 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 41 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2024-01-31 17:18:16,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 307 flow [2024-01-31 17:18:16,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:18:16,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:18:16,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-01-31 17:18:16,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47 [2024-01-31 17:18:16,215 INFO L175 Difference]: Start difference. First operand has 62 places, 40 transitions, 157 flow. Second operand 5 states and 94 transitions. [2024-01-31 17:18:16,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 307 flow [2024-01-31 17:18:16,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 54 transitions, 267 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-01-31 17:18:16,218 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 150 flow [2024-01-31 17:18:16,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=150, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2024-01-31 17:18:16,218 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 11 predicate places. [2024-01-31 17:18:16,219 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 150 flow [2024-01-31 17:18:16,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 17:18:16,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:18:16,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:18:16,232 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 17:18:16,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:18:16,431 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:18:16,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:18:16,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1631808876, now seen corresponding path program 1 times [2024-01-31 17:18:16,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:18:16,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651687657] [2024-01-31 17:18:16,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:18:16,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:18:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:18:16,624 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 17:18:16,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:18:16,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651687657] [2024-01-31 17:18:16,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651687657] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:18:16,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:18:16,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:18:16,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121685706] [2024-01-31 17:18:16,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:18:16,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:18:16,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:18:16,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:18:16,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:18:16,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-01-31 17:18:16,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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 17:18:16,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:18:16,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-01-31 17:18:16,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:18:16,969 INFO L124 PetriNetUnfolderBase]: 1621/2607 cut-off events. [2024-01-31 17:18:16,970 INFO L125 PetriNetUnfolderBase]: For 1543/1543 co-relation queries the response was YES. [2024-01-31 17:18:16,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6743 conditions, 2607 events. 1621/2607 cut-off events. For 1543/1543 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 12036 event pairs, 285 based on Foata normal form. 114/2717 useless extension candidates. Maximal degree in co-relation 6717. Up to 1331 conditions per place. [2024-01-31 17:18:16,979 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 101 selfloop transitions, 17 changer transitions 9/133 dead transitions. [2024-01-31 17:18:16,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 133 transitions, 705 flow [2024-01-31 17:18:16,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:18:16,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:18:16,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-01-31 17:18:16,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-01-31 17:18:16,981 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 150 flow. Second operand 9 states and 183 transitions. [2024-01-31 17:18:16,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 133 transitions, 705 flow [2024-01-31 17:18:16,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 133 transitions, 697 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 17:18:16,984 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 278 flow [2024-01-31 17:18:16,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=278, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-01-31 17:18:16,985 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 21 predicate places. [2024-01-31 17:18:16,985 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 278 flow [2024-01-31 17:18:16,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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 17:18:16,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:18:16,986 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:18:16,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 17:18:16,986 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:18:16,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:18:16,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1273680171, now seen corresponding path program 2 times [2024-01-31 17:18:16,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:18:16,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329847329] [2024-01-31 17:18:16,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:18:16,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:18:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:18:17,111 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 17:18:17,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:18:17,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329847329] [2024-01-31 17:18:17,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329847329] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:18:17,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99017174] [2024-01-31 17:18:17,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:18:17,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:18:17,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:18:17,124 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 17:18:17,188 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 17:18:17,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:18:17,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:18:17,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 8 conjunts are in the unsatisfiable core [2024-01-31 17:18:17,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:18:17,354 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 17:18:17,354 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:18:17,398 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 17:18:17,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99017174] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:18:17,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:18:17,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-01-31 17:18:17,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138588165] [2024-01-31 17:18:17,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:18:17,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-01-31 17:18:17,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:18:17,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-01-31 17:18:17,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-01-31 17:18:17,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-01-31 17:18:17,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 278 flow. Second operand has 14 states, 14 states have (on average 13.357142857142858) internal successors, (187), 14 states have internal predecessors, (187), 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 17:18:17,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:18:17,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-01-31 17:18:17,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:18:17,811 INFO L124 PetriNetUnfolderBase]: 1703/3014 cut-off events. [2024-01-31 17:18:17,811 INFO L125 PetriNetUnfolderBase]: For 4447/4512 co-relation queries the response was YES. [2024-01-31 17:18:17,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8992 conditions, 3014 events. 1703/3014 cut-off events. For 4447/4512 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 15863 event pairs, 994 based on Foata normal form. 36/3002 useless extension candidates. Maximal degree in co-relation 6802. Up to 1739 conditions per place. [2024-01-31 17:18:17,830 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 37 selfloop transitions, 6 changer transitions 51/110 dead transitions. [2024-01-31 17:18:17,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 110 transitions, 692 flow [2024-01-31 17:18:17,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:18:17,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:18:17,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-01-31 17:18:17,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445 [2024-01-31 17:18:17,832 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 278 flow. Second operand 10 states and 178 transitions. [2024-01-31 17:18:17,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 110 transitions, 692 flow [2024-01-31 17:18:17,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 110 transitions, 692 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:18:17,840 INFO L231 Difference]: Finished difference. Result has 76 places, 59 transitions, 330 flow [2024-01-31 17:18:17,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=330, PETRI_PLACES=76, PETRI_TRANSITIONS=59} [2024-01-31 17:18:17,840 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 36 predicate places. [2024-01-31 17:18:17,840 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 59 transitions, 330 flow [2024-01-31 17:18:17,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.357142857142858) internal successors, (187), 14 states have internal predecessors, (187), 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 17:18:17,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:18:17,841 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:18:17,854 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 17:18:18,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:18:18,052 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:18:18,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:18:18,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1410938646, now seen corresponding path program 3 times [2024-01-31 17:18:18,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:18:18,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421351440] [2024-01-31 17:18:18,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:18:18,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:18:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:18:18,144 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-01-31 17:18:18,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:18:18,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421351440] [2024-01-31 17:18:18,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421351440] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:18:18,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580244301] [2024-01-31 17:18:18,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 17:18:18,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:18:18,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:18:18,146 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 17:18:18,181 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 17:18:18,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-01-31 17:18:18,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:18:18,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 8 conjunts are in the unsatisfiable core [2024-01-31 17:18:18,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:18:18,306 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-01-31 17:18:18,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:18:18,366 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-01-31 17:18:18,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580244301] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:18:18,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:18:18,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-01-31 17:18:18,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011119391] [2024-01-31 17:18:18,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:18:18,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-01-31 17:18:18,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:18:18,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-01-31 17:18:18,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-01-31 17:18:18,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-01-31 17:18:18,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 59 transitions, 330 flow. Second operand has 14 states, 14 states have (on average 14.071428571428571) internal successors, (197), 14 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:18:18,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:18:18,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-01-31 17:18:18,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:18:18,675 INFO L124 PetriNetUnfolderBase]: 1293/2129 cut-off events. [2024-01-31 17:18:18,675 INFO L125 PetriNetUnfolderBase]: For 3642/3844 co-relation queries the response was YES. [2024-01-31 17:18:18,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6857 conditions, 2129 events. 1293/2129 cut-off events. For 3642/3844 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 10895 event pairs, 546 based on Foata normal form. 110/2157 useless extension candidates. Maximal degree in co-relation 6810. Up to 1130 conditions per place. [2024-01-31 17:18:18,688 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 75 selfloop transitions, 9 changer transitions 0/102 dead transitions. [2024-01-31 17:18:18,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 102 transitions, 768 flow [2024-01-31 17:18:18,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:18:18,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:18:18,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-01-31 17:18:18,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-01-31 17:18:18,690 INFO L175 Difference]: Start difference. First operand has 76 places, 59 transitions, 330 flow. Second operand 9 states and 159 transitions. [2024-01-31 17:18:18,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 102 transitions, 768 flow [2024-01-31 17:18:18,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 102 transitions, 710 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-01-31 17:18:18,695 INFO L231 Difference]: Finished difference. Result has 73 places, 60 transitions, 330 flow [2024-01-31 17:18:18,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=330, PETRI_PLACES=73, PETRI_TRANSITIONS=60} [2024-01-31 17:18:18,696 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 33 predicate places. [2024-01-31 17:18:18,696 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 60 transitions, 330 flow [2024-01-31 17:18:18,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.071428571428571) internal successors, (197), 14 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:18:18,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:18:18,697 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:18:18,710 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 17:18:18,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:18:18,911 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:18:18,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:18:18,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1727243452, now seen corresponding path program 4 times [2024-01-31 17:18:18,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:18:18,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044400796] [2024-01-31 17:18:18,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:18:18,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:18:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:18:19,035 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-01-31 17:18:19,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:18:19,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044400796] [2024-01-31 17:18:19,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044400796] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:18:19,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767218746] [2024-01-31 17:18:19,036 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-31 17:18:19,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:18:19,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:18:19,037 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 17:18:19,061 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 17:18:19,126 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-31 17:18:19,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:18:19,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-31 17:18:19,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:18:19,197 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-01-31 17:18:19,197 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:18:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-01-31 17:18:19,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767218746] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:18:19,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:18:19,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2024-01-31 17:18:19,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458442905] [2024-01-31 17:18:19,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:18:19,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-01-31 17:18:19,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:18:19,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-01-31 17:18:19,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-01-31 17:18:19,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-01-31 17:18:19,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 60 transitions, 330 flow. Second operand has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:18:19,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:18:19,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-01-31 17:18:19,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:18:19,886 INFO L124 PetriNetUnfolderBase]: 2260/3980 cut-off events. [2024-01-31 17:18:19,886 INFO L125 PetriNetUnfolderBase]: For 6533/6581 co-relation queries the response was YES. [2024-01-31 17:18:19,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12808 conditions, 3980 events. 2260/3980 cut-off events. For 6533/6581 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 22349 event pairs, 199 based on Foata normal form. 50/3961 useless extension candidates. Maximal degree in co-relation 12763. Up to 660 conditions per place. [2024-01-31 17:18:19,910 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 135 selfloop transitions, 39 changer transitions 0/190 dead transitions. [2024-01-31 17:18:19,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 190 transitions, 1298 flow [2024-01-31 17:18:19,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-01-31 17:18:19,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-01-31 17:18:19,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 328 transitions. [2024-01-31 17:18:19,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-01-31 17:18:19,911 INFO L175 Difference]: Start difference. First operand has 73 places, 60 transitions, 330 flow. Second operand 18 states and 328 transitions. [2024-01-31 17:18:19,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 190 transitions, 1298 flow [2024-01-31 17:18:19,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 190 transitions, 1254 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-01-31 17:18:19,920 INFO L231 Difference]: Finished difference. Result has 90 places, 86 transitions, 586 flow [2024-01-31 17:18:19,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=586, PETRI_PLACES=90, PETRI_TRANSITIONS=86} [2024-01-31 17:18:19,921 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 50 predicate places. [2024-01-31 17:18:19,921 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 86 transitions, 586 flow [2024-01-31 17:18:19,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:18:19,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:18:19,921 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:18:19,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-01-31 17:18:20,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:18:20,135 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 17:18:20,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:18:20,135 INFO L85 PathProgramCache]: Analyzing trace with hash -618484819, now seen corresponding path program 5 times [2024-01-31 17:18:20,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:18:20,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254451191] [2024-01-31 17:18:20,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:18:20,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:18:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:18:20,316 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-01-31 17:18:20,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:18:20,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254451191] [2024-01-31 17:18:20,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254451191] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:18:20,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456802946] [2024-01-31 17:18:20,316 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-31 17:18:20,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:18:20,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:18:20,318 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 17:18:20,319 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 17:18:20,408 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-01-31 17:18:20,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:18:20,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-31 17:18:20,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:18:20,504 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-01-31 17:18:20,504 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:18:20,595 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-01-31 17:18:20,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456802946] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:18:20,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:18:20,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-01-31 17:18:20,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516966571] [2024-01-31 17:18:20,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:18:20,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-01-31 17:18:20,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:18:20,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-01-31 17:18:20,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-01-31 17:18:20,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-01-31 17:18:20,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 86 transitions, 586 flow. Second operand has 14 states, 14 states have (on average 9.428571428571429) internal successors, (132), 14 states have internal predecessors, (132), 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 17:18:20,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:18:20,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-01-31 17:18:20,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:18:24,278 INFO L124 PetriNetUnfolderBase]: 12441/17558 cut-off events. [2024-01-31 17:18:24,278 INFO L125 PetriNetUnfolderBase]: For 37418/37418 co-relation queries the response was YES. [2024-01-31 17:18:24,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61819 conditions, 17558 events. 12441/17558 cut-off events. For 37418/37418 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 85965 event pairs, 45 based on Foata normal form. 198/17756 useless extension candidates. Maximal degree in co-relation 61768. Up to 2805 conditions per place. [2024-01-31 17:18:24,334 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 0 selfloop transitions, 0 changer transitions 1307/1307 dead transitions. [2024-01-31 17:18:24,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 1307 transitions, 9843 flow [2024-01-31 17:18:24,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-01-31 17:18:24,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2024-01-31 17:18:24,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 1288 transitions. [2024-01-31 17:18:24,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777777777777775 [2024-01-31 17:18:24,341 INFO L175 Difference]: Start difference. First operand has 90 places, 86 transitions, 586 flow. Second operand 90 states and 1288 transitions. [2024-01-31 17:18:24,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 1307 transitions, 9843 flow [2024-01-31 17:18:24,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 1307 transitions, 9340 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-01-31 17:18:24,436 INFO L231 Difference]: Finished difference. Result has 165 places, 0 transitions, 0 flow [2024-01-31 17:18:24,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=0, PETRI_PLACES=165, PETRI_TRANSITIONS=0} [2024-01-31 17:18:24,437 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 125 predicate places. [2024-01-31 17:18:24,439 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 0 transitions, 0 flow [2024-01-31 17:18:24,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.428571428571429) internal successors, (132), 14 states have internal predecessors, (132), 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 17:18:24,442 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-01-31 17:18:24,442 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-01-31 17:18:24,443 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-01-31 17:18:24,443 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-01-31 17:18:24,468 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 17:18:24,656 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,SelfDestructingSolverStorable11 [2024-01-31 17:18:24,656 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:18:24,659 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 17:18:24,659 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 17:18:24,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 05:18:24 BasicIcfg [2024-01-31 17:18:24,664 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 17:18:24,665 INFO L158 Benchmark]: Toolchain (without parser) took 13971.79ms. Allocated memory was 155.2MB in the beginning and 708.8MB in the end (delta: 553.6MB). Free memory was 74.9MB in the beginning and 442.2MB in the end (delta: -367.3MB). Peak memory consumption was 236.8MB. Max. memory is 16.1GB. [2024-01-31 17:18:24,665 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 155.2MB. Free memory was 106.1MB in the beginning and 106.0MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 17:18:24,665 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 155.2MB. Free memory is still 121.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 17:18:24,665 INFO L158 Benchmark]: CACSL2BoogieTranslator took 360.40ms. Allocated memory was 155.2MB in the beginning and 199.2MB in the end (delta: 44.0MB). Free memory was 74.7MB in the beginning and 163.5MB in the end (delta: -88.8MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2024-01-31 17:18:24,665 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.26ms. Allocated memory is still 199.2MB. Free memory was 163.5MB in the beginning and 161.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 17:18:24,666 INFO L158 Benchmark]: Boogie Preprocessor took 36.92ms. Allocated memory is still 199.2MB. Free memory was 161.4MB in the beginning and 158.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 17:18:24,666 INFO L158 Benchmark]: RCFGBuilder took 521.15ms. Allocated memory is still 199.2MB. Free memory was 158.3MB in the beginning and 108.0MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-01-31 17:18:24,666 INFO L158 Benchmark]: TraceAbstraction took 13021.55ms. Allocated memory was 199.2MB in the beginning and 708.8MB in the end (delta: 509.6MB). Free memory was 106.9MB in the beginning and 442.2MB in the end (delta: -335.3MB). Peak memory consumption was 225.4MB. Max. memory is 16.1GB. [2024-01-31 17:18:24,667 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 0.15ms. Allocated memory is still 155.2MB. Free memory was 106.1MB in the beginning and 106.0MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 155.2MB. Free memory is still 121.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 360.40ms. Allocated memory was 155.2MB in the beginning and 199.2MB in the end (delta: 44.0MB). Free memory was 74.7MB in the beginning and 163.5MB in the end (delta: -88.8MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.26ms. Allocated memory is still 199.2MB. Free memory was 163.5MB in the beginning and 161.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.92ms. Allocated memory is still 199.2MB. Free memory was 161.4MB in the beginning and 158.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 521.15ms. Allocated memory is still 199.2MB. Free memory was 158.3MB in the beginning and 108.0MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * TraceAbstraction took 13021.55ms. Allocated memory was 199.2MB in the beginning and 708.8MB in the end (delta: 509.6MB). Free memory was 106.9MB in the beginning and 442.2MB in the end (delta: -335.3MB). Peak memory consumption was 225.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 103]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 55 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: 12.9s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 7.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1178 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1133 mSDsluCounter, 133 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 119 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4802 IncrementalHoareTripleChecker+Invalid, 4852 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 14 mSDtfsCounter, 4802 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 787 GetRequests, 576 SyntacticMatches, 14 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3655 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=586occurred in iteration=11, InterpolantAutomatonStates: 173, 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: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 650 NumberOfCodeBlocks, 623 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 893 ConstructedInterpolants, 0 QuantifiedInterpolants, 2751 SizeOfPredicates, 24 NumberOfNonLiveVariables, 1826 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 28 InterpolantComputations, 8 PerfectInterpolantSequences, 174/226 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-31 17:18:24,699 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 Result: TRUE