./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix039.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f 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/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix039.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 42c5ff0d69642601057eb29fc7d78b67af5ab0b43644460199f4561abe049d3b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 16:13:30,108 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 16:13:30,208 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 16:13:30,213 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 16:13:30,214 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 16:13:30,250 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 16:13:30,251 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 16:13:30,252 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 16:13:30,252 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 16:13:30,253 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 16:13:30,253 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 16:13:30,254 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 16:13:30,254 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 16:13:30,255 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 16:13:30,255 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 16:13:30,256 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 16:13:30,256 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 16:13:30,256 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 16:13:30,257 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 16:13:30,257 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 16:13:30,257 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 16:13:30,258 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 16:13:30,258 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 16:13:30,259 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 16:13:30,259 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 16:13:30,259 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 16:13:30,260 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 16:13:30,260 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 16:13:30,260 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 16:13:30,261 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 16:13:30,261 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 16:13:30,261 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 16:13:30,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:13:30,262 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 16:13:30,262 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 16:13:30,263 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 16:13:30,263 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 16:13:30,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 16:13:30,263 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 16:13:30,264 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 16:13:30,264 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 16:13:30,265 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 16:13:30,265 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 16:13:30,265 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42c5ff0d69642601057eb29fc7d78b67af5ab0b43644460199f4561abe049d3b [2024-01-27 16:13:30,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 16:13:30,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 16:13:30,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 16:13:30,552 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 16:13:30,552 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 16:13:30,553 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix039.oepc.i [2024-01-27 16:13:31,679 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 16:13:31,916 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 16:13:31,917 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix039.oepc.i [2024-01-27 16:13:31,936 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/119a75a72/fafc40c8791d4b2a879dee403d49a0ad/FLAG44dee9600 [2024-01-27 16:13:31,950 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/119a75a72/fafc40c8791d4b2a879dee403d49a0ad [2024-01-27 16:13:31,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 16:13:31,953 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 16:13:31,954 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 16:13:31,954 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 16:13:31,963 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 16:13:31,965 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:13:31" (1/1) ... [2024-01-27 16:13:31,965 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a51d16c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:31, skipping insertion in model container [2024-01-27 16:13:31,966 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:13:31" (1/1) ... [2024-01-27 16:13:32,010 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 16:13:32,152 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix039.oepc.i[945,958] [2024-01-27 16:13:32,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:13:32,369 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 16:13:32,385 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix039.oepc.i[945,958] [2024-01-27 16:13:32,467 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:13:32,555 INFO L206 MainTranslator]: Completed translation [2024-01-27 16:13:32,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:32 WrapperNode [2024-01-27 16:13:32,571 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 16:13:32,572 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 16:13:32,573 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 16:13:32,573 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 16:13:32,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:32" (1/1) ... [2024-01-27 16:13:32,604 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:32" (1/1) ... [2024-01-27 16:13:32,641 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2024-01-27 16:13:32,642 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 16:13:32,643 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 16:13:32,643 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 16:13:32,643 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 16:13:32,653 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:32" (1/1) ... [2024-01-27 16:13:32,653 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:32" (1/1) ... [2024-01-27 16:13:32,658 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:32" (1/1) ... [2024-01-27 16:13:32,682 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-27 16:13:32,682 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:32" (1/1) ... [2024-01-27 16:13:32,682 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:32" (1/1) ... [2024-01-27 16:13:32,695 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:32" (1/1) ... [2024-01-27 16:13:32,697 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:32" (1/1) ... [2024-01-27 16:13:32,699 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:32" (1/1) ... [2024-01-27 16:13:32,701 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:32" (1/1) ... [2024-01-27 16:13:32,705 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 16:13:32,715 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 16:13:32,715 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 16:13:32,715 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 16:13:32,720 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:32" (1/1) ... [2024-01-27 16:13:32,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:13:32,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:13:32,753 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) [2024-01-27 16:13:32,769 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 [2024-01-27 16:13:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 16:13:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 16:13:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 16:13:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 16:13:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 16:13:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 16:13:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 16:13:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 16:13:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 16:13:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-27 16:13:32,817 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-27 16:13:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-27 16:13:32,818 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-27 16:13:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-27 16:13:32,818 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-27 16:13:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-27 16:13:32,819 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-27 16:13:32,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 16:13:32,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 16:13:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 16:13:32,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 16:13:32,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 16:13:32,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 16:13:32,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 16:13:32,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 16:13:32,823 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 16:13:33,019 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 16:13:33,022 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 16:13:33,348 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 16:13:33,348 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 16:13:33,570 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 16:13:33,570 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 16:13:33,571 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:13:33 BoogieIcfgContainer [2024-01-27 16:13:33,571 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 16:13:33,574 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 16:13:33,574 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 16:13:33,577 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 16:13:33,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 04:13:31" (1/3) ... [2024-01-27 16:13:33,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69dcfeee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:13:33, skipping insertion in model container [2024-01-27 16:13:33,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:32" (2/3) ... [2024-01-27 16:13:33,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69dcfeee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:13:33, skipping insertion in model container [2024-01-27 16:13:33,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:13:33" (3/3) ... [2024-01-27 16:13:33,581 INFO L112 eAbstractionObserver]: Analyzing ICFG mix039.oepc.i [2024-01-27 16:13:33,605 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 16:13:33,614 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 16:13:33,614 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-27 16:13:33,614 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 16:13:33,687 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-27 16:13:33,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2024-01-27 16:13:33,774 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-01-27 16:13:33,774 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:13:33,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2024-01-27 16:13:33,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2024-01-27 16:13:33,783 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2024-01-27 16:13:33,798 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 16:13:33,805 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=true, 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;@71e9eacb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 16:13:33,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-01-27 16:13:33,810 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 16:13:33,811 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-01-27 16:13:33,811 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:13:33,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:13:33,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-27 16:13:33,813 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:13:33,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:13:33,818 INFO L85 PathProgramCache]: Analyzing trace with hash 12425846, now seen corresponding path program 1 times [2024-01-27 16:13:33,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:13:33,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990167982] [2024-01-27 16:13:33,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:13:33,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:13:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:13:34,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:13:34,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:13:34,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990167982] [2024-01-27 16:13:34,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990167982] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:13:34,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:13:34,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 16:13:34,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413316473] [2024-01-27 16:13:34,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:13:34,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 16:13:34,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:13:34,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 16:13:34,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 16:13:34,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2024-01-27 16:13:34,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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) [2024-01-27 16:13:34,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:13:34,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2024-01-27 16:13:34,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:13:35,087 INFO L124 PetriNetUnfolderBase]: 2495/3975 cut-off events. [2024-01-27 16:13:35,087 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-01-27 16:13:35,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7551 conditions, 3975 events. 2495/3975 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 24948 event pairs, 1647 based on Foata normal form. 135/4035 useless extension candidates. Maximal degree in co-relation 7539. Up to 2779 conditions per place. [2024-01-27 16:13:35,123 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 37 selfloop transitions, 2 changer transitions 2/62 dead transitions. [2024-01-27 16:13:35,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 227 flow [2024-01-27 16:13:35,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 16:13:35,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 16:13:35,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-01-27 16:13:35,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7933333333333333 [2024-01-27 16:13:35,138 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 119 transitions. [2024-01-27 16:13:35,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 227 flow [2024-01-27 16:13:35,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 16:13:35,150 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2024-01-27 16:13:35,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-01-27 16:13:35,155 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2024-01-27 16:13:35,155 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2024-01-27 16:13:35,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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) [2024-01-27 16:13:35,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:13:35,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:13:35,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 16:13:35,157 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:13:35,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:13:35,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1295638666, now seen corresponding path program 1 times [2024-01-27 16:13:35,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:13:35,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811348667] [2024-01-27 16:13:35,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:13:35,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:13:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:13:35,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:13:35,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:13:35,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811348667] [2024-01-27 16:13:35,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811348667] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:13:35,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:13:35,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:13:35,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767030235] [2024-01-27 16:13:35,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:13:35,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:13:35,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:13:35,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:13:35,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:13:35,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-01-27 16:13:35,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2024-01-27 16:13:35,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:13:35,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-01-27 16:13:35,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:13:40,445 INFO L124 PetriNetUnfolderBase]: 28756/41044 cut-off events. [2024-01-27 16:13:40,446 INFO L125 PetriNetUnfolderBase]: For 1950/1950 co-relation queries the response was YES. [2024-01-27 16:13:40,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82096 conditions, 41044 events. 28756/41044 cut-off events. For 1950/1950 co-relation queries the response was YES. Maximal size of possible extension queue 1853. Compared 289597 event pairs, 6904 based on Foata normal form. 0/39793 useless extension candidates. Maximal degree in co-relation 82086. Up to 16239 conditions per place. [2024-01-27 16:13:40,754 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 48 selfloop transitions, 7 changer transitions 96/164 dead transitions. [2024-01-27 16:13:40,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 164 transitions, 662 flow [2024-01-27 16:13:40,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 16:13:40,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 16:13:40,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 306 transitions. [2024-01-27 16:13:40,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.68 [2024-01-27 16:13:40,898 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 9 states and 306 transitions. [2024-01-27 16:13:40,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 164 transitions, 662 flow [2024-01-27 16:13:40,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 164 transitions, 644 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 16:13:40,902 INFO L231 Difference]: Finished difference. Result has 68 places, 48 transitions, 190 flow [2024-01-27 16:13:40,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=190, PETRI_PLACES=68, PETRI_TRANSITIONS=48} [2024-01-27 16:13:40,903 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-01-27 16:13:40,903 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 48 transitions, 190 flow [2024-01-27 16:13:40,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2024-01-27 16:13:40,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:13:40,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:13:40,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 16:13:40,915 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:13:40,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:13:40,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1220288491, now seen corresponding path program 1 times [2024-01-27 16:13:40,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:13:40,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622220692] [2024-01-27 16:13:40,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:13:40,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:13:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:13:41,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:13:41,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:13:41,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622220692] [2024-01-27 16:13:41,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622220692] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:13:41,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:13:41,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:13:41,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472619724] [2024-01-27 16:13:41,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:13:41,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:13:41,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:13:41,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:13:41,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:13:41,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-01-27 16:13:41,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 48 transitions, 190 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2024-01-27 16:13:41,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:13:41,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-01-27 16:13:41,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:13:44,594 INFO L124 PetriNetUnfolderBase]: 21196/30912 cut-off events. [2024-01-27 16:13:44,594 INFO L125 PetriNetUnfolderBase]: For 36555/37969 co-relation queries the response was YES. [2024-01-27 16:13:44,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88825 conditions, 30912 events. 21196/30912 cut-off events. For 36555/37969 co-relation queries the response was YES. Maximal size of possible extension queue 1351. Compared 213647 event pairs, 2848 based on Foata normal form. 805/31521 useless extension candidates. Maximal degree in co-relation 88807. Up to 12842 conditions per place. [2024-01-27 16:13:44,810 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 58 selfloop transitions, 8 changer transitions 90/169 dead transitions. [2024-01-27 16:13:44,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 169 transitions, 1014 flow [2024-01-27 16:13:44,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 16:13:44,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 16:13:44,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 316 transitions. [2024-01-27 16:13:44,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.632 [2024-01-27 16:13:44,815 INFO L175 Difference]: Start difference. First operand has 68 places, 48 transitions, 190 flow. Second operand 10 states and 316 transitions. [2024-01-27 16:13:44,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 169 transitions, 1014 flow [2024-01-27 16:13:45,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 169 transitions, 888 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-01-27 16:13:45,117 INFO L231 Difference]: Finished difference. Result has 75 places, 52 transitions, 246 flow [2024-01-27 16:13:45,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=246, PETRI_PLACES=75, PETRI_TRANSITIONS=52} [2024-01-27 16:13:45,118 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2024-01-27 16:13:45,119 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 52 transitions, 246 flow [2024-01-27 16:13:45,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2024-01-27 16:13:45,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:13:45,119 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] [2024-01-27 16:13:45,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 16:13:45,120 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:13:45,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:13:45,121 INFO L85 PathProgramCache]: Analyzing trace with hash 661650636, now seen corresponding path program 1 times [2024-01-27 16:13:45,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:13:45,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516686565] [2024-01-27 16:13:45,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:13:45,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:13:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:13:45,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:13:45,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:13:45,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516686565] [2024-01-27 16:13:45,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516686565] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:13:45,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:13:45,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:13:45,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280254361] [2024-01-27 16:13:45,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:13:45,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:13:45,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:13:45,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:13:45,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:13:45,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-01-27 16:13:45,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 52 transitions, 246 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2024-01-27 16:13:45,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:13:45,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-01-27 16:13:45,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:13:48,375 INFO L124 PetriNetUnfolderBase]: 19791/28955 cut-off events. [2024-01-27 16:13:48,375 INFO L125 PetriNetUnfolderBase]: For 54819/55127 co-relation queries the response was YES. [2024-01-27 16:13:48,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87735 conditions, 28955 events. 19791/28955 cut-off events. For 54819/55127 co-relation queries the response was YES. Maximal size of possible extension queue 1235. Compared 197942 event pairs, 2959 based on Foata normal form. 709/29633 useless extension candidates. Maximal degree in co-relation 87710. Up to 14067 conditions per place. [2024-01-27 16:13:48,609 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 62 selfloop transitions, 16 changer transitions 76/167 dead transitions. [2024-01-27 16:13:48,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 167 transitions, 1056 flow [2024-01-27 16:13:48,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 16:13:48,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 16:13:48,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 318 transitions. [2024-01-27 16:13:48,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.636 [2024-01-27 16:13:48,612 INFO L175 Difference]: Start difference. First operand has 75 places, 52 transitions, 246 flow. Second operand 10 states and 318 transitions. [2024-01-27 16:13:48,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 167 transitions, 1056 flow [2024-01-27 16:13:49,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 167 transitions, 1005 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-01-27 16:13:49,081 INFO L231 Difference]: Finished difference. Result has 81 places, 58 transitions, 355 flow [2024-01-27 16:13:49,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=355, PETRI_PLACES=81, PETRI_TRANSITIONS=58} [2024-01-27 16:13:49,082 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2024-01-27 16:13:49,082 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 58 transitions, 355 flow [2024-01-27 16:13:49,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2024-01-27 16:13:49,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:13:49,082 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] [2024-01-27 16:13:49,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 16:13:49,083 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:13:49,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:13:49,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1813400821, now seen corresponding path program 1 times [2024-01-27 16:13:49,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:13:49,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749024078] [2024-01-27 16:13:49,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:13:49,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:13:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:13:49,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:13:49,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:13:49,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749024078] [2024-01-27 16:13:49,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749024078] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:13:49,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:13:49,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 16:13:49,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643999675] [2024-01-27 16:13:49,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:13:49,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 16:13:49,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:13:49,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 16:13:49,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 16:13:49,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-01-27 16:13:49,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 58 transitions, 355 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-01-27 16:13:49,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:13:49,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-01-27 16:13:49,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:13:53,264 INFO L124 PetriNetUnfolderBase]: 27446/41395 cut-off events. [2024-01-27 16:13:53,264 INFO L125 PetriNetUnfolderBase]: For 42145/43949 co-relation queries the response was YES. [2024-01-27 16:13:53,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105859 conditions, 41395 events. 27446/41395 cut-off events. For 42145/43949 co-relation queries the response was YES. Maximal size of possible extension queue 1875. Compared 312193 event pairs, 4294 based on Foata normal form. 1591/41559 useless extension candidates. Maximal degree in co-relation 105829. Up to 20547 conditions per place. [2024-01-27 16:13:53,663 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 56 selfloop transitions, 6 changer transitions 0/92 dead transitions. [2024-01-27 16:13:53,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 92 transitions, 583 flow [2024-01-27 16:13:53,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 16:13:53,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 16:13:53,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-01-27 16:13:53,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.705 [2024-01-27 16:13:53,665 INFO L175 Difference]: Start difference. First operand has 81 places, 58 transitions, 355 flow. Second operand 4 states and 141 transitions. [2024-01-27 16:13:53,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 92 transitions, 583 flow [2024-01-27 16:13:53,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 92 transitions, 539 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-01-27 16:13:53,884 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 357 flow [2024-01-27 16:13:53,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=357, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2024-01-27 16:13:53,885 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 12 predicate places. [2024-01-27 16:13:53,885 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 357 flow [2024-01-27 16:13:53,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-01-27 16:13:53,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:13:53,886 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] [2024-01-27 16:13:53,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 16:13:53,886 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:13:53,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:13:53,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1874421129, now seen corresponding path program 1 times [2024-01-27 16:13:53,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:13:53,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480466674] [2024-01-27 16:13:53,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:13:53,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:13:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:13:54,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:13:54,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:13:54,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480466674] [2024-01-27 16:13:54,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480466674] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:13:54,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:13:54,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 16:13:54,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717670053] [2024-01-27 16:13:54,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:13:54,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:13:54,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:13:54,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:13:54,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:13:54,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-01-27 16:13:54,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 357 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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) [2024-01-27 16:13:54,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:13:54,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-01-27 16:13:54,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:13:59,282 INFO L124 PetriNetUnfolderBase]: 36886/54264 cut-off events. [2024-01-27 16:13:59,283 INFO L125 PetriNetUnfolderBase]: For 71848/75259 co-relation queries the response was YES. [2024-01-27 16:13:59,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158918 conditions, 54264 events. 36886/54264 cut-off events. For 71848/75259 co-relation queries the response was YES. Maximal size of possible extension queue 2477. Compared 410609 event pairs, 11385 based on Foata normal form. 912/52262 useless extension candidates. Maximal degree in co-relation 158894. Up to 24995 conditions per place. [2024-01-27 16:13:59,717 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 111 selfloop transitions, 17 changer transitions 0/146 dead transitions. [2024-01-27 16:13:59,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 146 transitions, 922 flow [2024-01-27 16:13:59,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 16:13:59,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 16:13:59,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 255 transitions. [2024-01-27 16:13:59,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6375 [2024-01-27 16:13:59,719 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 357 flow. Second operand 8 states and 255 transitions. [2024-01-27 16:13:59,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 146 transitions, 922 flow [2024-01-27 16:14:00,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 146 transitions, 920 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 16:14:00,069 INFO L231 Difference]: Finished difference. Result has 81 places, 68 transitions, 453 flow [2024-01-27 16:14:00,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=453, PETRI_PLACES=81, PETRI_TRANSITIONS=68} [2024-01-27 16:14:00,070 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2024-01-27 16:14:00,070 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 68 transitions, 453 flow [2024-01-27 16:14:00,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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) [2024-01-27 16:14:00,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:00,071 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] [2024-01-27 16:14:00,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 16:14:00,071 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:14:00,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:00,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1116354433, now seen corresponding path program 1 times [2024-01-27 16:14:00,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:00,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871952738] [2024-01-27 16:14:00,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:00,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:00,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:14:00,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:00,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871952738] [2024-01-27 16:14:00,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871952738] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:00,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:00,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 16:14:00,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696443897] [2024-01-27 16:14:00,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:00,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:14:00,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:00,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:14:00,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:14:00,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-01-27 16:14:00,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 68 transitions, 453 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 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) [2024-01-27 16:14:00,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:00,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-01-27 16:14:00,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:10,150 INFO L124 PetriNetUnfolderBase]: 65142/97689 cut-off events. [2024-01-27 16:14:10,150 INFO L125 PetriNetUnfolderBase]: For 177216/181955 co-relation queries the response was YES. [2024-01-27 16:14:10,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290083 conditions, 97689 events. 65142/97689 cut-off events. For 177216/181955 co-relation queries the response was YES. Maximal size of possible extension queue 4201. Compared 818967 event pairs, 7551 based on Foata normal form. 1314/94387 useless extension candidates. Maximal degree in co-relation 290053. Up to 36154 conditions per place. [2024-01-27 16:14:11,077 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 126 selfloop transitions, 43 changer transitions 0/186 dead transitions. [2024-01-27 16:14:11,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 186 transitions, 1389 flow [2024-01-27 16:14:11,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 16:14:11,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 16:14:11,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 282 transitions. [2024-01-27 16:14:11,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6266666666666667 [2024-01-27 16:14:11,079 INFO L175 Difference]: Start difference. First operand has 81 places, 68 transitions, 453 flow. Second operand 9 states and 282 transitions. [2024-01-27 16:14:11,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 186 transitions, 1389 flow [2024-01-27 16:14:13,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 186 transitions, 1297 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-01-27 16:14:13,207 INFO L231 Difference]: Finished difference. Result has 94 places, 98 transitions, 872 flow [2024-01-27 16:14:13,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=872, PETRI_PLACES=94, PETRI_TRANSITIONS=98} [2024-01-27 16:14:13,208 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 36 predicate places. [2024-01-27 16:14:13,208 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 98 transitions, 872 flow [2024-01-27 16:14:13,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 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) [2024-01-27 16:14:13,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:13,208 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] [2024-01-27 16:14:13,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 16:14:13,209 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:14:13,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:13,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1411507853, now seen corresponding path program 2 times [2024-01-27 16:14:13,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:13,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234404754] [2024-01-27 16:14:13,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:13,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:13,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:14:13,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:13,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234404754] [2024-01-27 16:14:13,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234404754] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:13,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:13,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:14:13,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730813561] [2024-01-27 16:14:13,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:13,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:14:13,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:13,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:14:13,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:14:13,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-01-27 16:14:13,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 98 transitions, 872 flow. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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) [2024-01-27 16:14:13,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:13,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-01-27 16:14:13,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand