./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c --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/weaver/popl20-simple-array-sum.wvr.c -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 e53c8de1752bcaae88365f4089aa38090949baac13984623f5e7e3707a7b4c63 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:53:49,336 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:53:49,401 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:53:49,404 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:53:49,405 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:53:49,431 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:53:49,434 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:53:49,434 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:53:49,434 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:53:49,438 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:53:49,438 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:53:49,438 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:53:49,439 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:53:49,440 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:53:49,441 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:53:49,441 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:53:49,441 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:53:49,441 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:53:49,442 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:53:49,442 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:53:49,443 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:53:49,443 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:53:49,443 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:53:49,444 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:53:49,444 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:53:49,444 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:53:49,444 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:53:49,444 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:53:49,445 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:53:49,445 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:53:49,446 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:53:49,446 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:53:49,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:53:49,447 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:53:49,447 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:53:49,447 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:53:49,447 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:53:49,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:53:49,448 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:53:49,448 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:53:49,448 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:53:49,448 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:53:49,448 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:53:49,449 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e53c8de1752bcaae88365f4089aa38090949baac13984623f5e7e3707a7b4c63 [2024-01-27 15:53:49,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:53:49,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:53:49,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:53:49,651 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:53:49,652 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:53:49,652 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2024-01-27 15:53:50,775 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:53:50,944 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:53:50,944 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2024-01-27 15:53:50,952 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54bd7fe73/de06cace4844427ba704ed7c74cd012e/FLAG76b82d79e [2024-01-27 15:53:50,965 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54bd7fe73/de06cace4844427ba704ed7c74cd012e [2024-01-27 15:53:50,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:53:50,968 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:53:50,968 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:53:50,969 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:53:50,972 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:53:50,973 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:53:50" (1/1) ... [2024-01-27 15:53:50,973 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a10d0a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:53:50, skipping insertion in model container [2024-01-27 15:53:50,973 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:53:50" (1/1) ... [2024-01-27 15:53:50,991 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:53:51,128 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] [2024-01-27 15:53:51,136 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:53:51,147 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:53:51,164 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] [2024-01-27 15:53:51,167 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:53:51,178 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:53:51,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:53:51 WrapperNode [2024-01-27 15:53:51,179 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:53:51,180 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:53:51,180 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:53:51,180 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:53:51,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:53:51" (1/1) ... [2024-01-27 15:53:51,197 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:53:51" (1/1) ... [2024-01-27 15:53:51,213 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 127 [2024-01-27 15:53:51,214 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:53:51,215 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:53:51,215 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:53:51,215 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:53:51,222 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:53:51" (1/1) ... [2024-01-27 15:53:51,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:53:51" (1/1) ... [2024-01-27 15:53:51,225 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:53:51" (1/1) ... [2024-01-27 15:53:51,250 INFO L175 MemorySlicer]: Split 14 memory accesses to 5 slices as follows [2, 2, 2, 6, 2]. 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, 3, 1]. [2024-01-27 15:53:51,250 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:53:51" (1/1) ... [2024-01-27 15:53:51,250 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:53:51" (1/1) ... [2024-01-27 15:53:51,256 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:53:51" (1/1) ... [2024-01-27 15:53:51,260 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:53:51" (1/1) ... [2024-01-27 15:53:51,277 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:53:51" (1/1) ... [2024-01-27 15:53:51,278 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:53:51" (1/1) ... [2024-01-27 15:53:51,280 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:53:51,281 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:53:51,281 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:53:51,281 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:53:51,282 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:53:51" (1/1) ... [2024-01-27 15:53:51,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:53:51,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:53:51,316 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 15:53:51,322 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 15:53:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:53:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:53:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:53:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:53:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:53:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:53:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 15:53:51,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:53:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:53:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:53:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:53:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 15:53:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:53:51,360 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:53:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:53:51,360 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:53:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:53:51,360 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:53:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:53:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:53:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:53:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:53:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 15:53:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:53:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:53:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-27 15:53:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:53:51,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:53:51,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:53:51,366 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 15:53:51,487 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:53:51,489 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:53:51,738 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:53:51,739 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:53:51,946 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:53:51,946 INFO L320 CfgBuilder]: Removed 5 assume(true) statements. [2024-01-27 15:53:51,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:53:51 BoogieIcfgContainer [2024-01-27 15:53:51,950 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:53:51,952 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:53:51,952 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:53:51,955 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:53:51,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:53:50" (1/3) ... [2024-01-27 15:53:51,956 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff956f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:53:51, skipping insertion in model container [2024-01-27 15:53:51,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:53:51" (2/3) ... [2024-01-27 15:53:51,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff956f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:53:51, skipping insertion in model container [2024-01-27 15:53:51,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:53:51" (3/3) ... [2024-01-27 15:53:51,959 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2024-01-27 15:53:51,967 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:53:51,974 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:53:51,975 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:53:51,975 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:53:52,022 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-27 15:53:52,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 40 transitions, 101 flow [2024-01-27 15:53:52,092 INFO L124 PetriNetUnfolderBase]: 6/37 cut-off events. [2024-01-27 15:53:52,093 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:53:52,097 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. [2024-01-27 15:53:52,098 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 40 transitions, 101 flow [2024-01-27 15:53:52,101 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 36 transitions, 90 flow [2024-01-27 15:53:52,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:53:52,120 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;@16f89f11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:53:52,121 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-27 15:53:52,139 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:53:52,140 INFO L124 PetriNetUnfolderBase]: 6/35 cut-off events. [2024-01-27 15:53:52,140 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:53:52,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:53:52,141 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 15:53:52,142 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)] === [2024-01-27 15:53:52,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:53:52,147 INFO L85 PathProgramCache]: Analyzing trace with hash -424678971, now seen corresponding path program 1 times [2024-01-27 15:53:52,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:53:52,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530762882] [2024-01-27 15:53:52,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:53:52,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:53:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:53:52,984 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 15:53:52,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:53:52,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530762882] [2024-01-27 15:53:52,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530762882] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:53:52,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:53:52,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:53:52,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154637474] [2024-01-27 15:53:52,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:53:52,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:53:52,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:53:53,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:53:53,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:53:53,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-01-27 15:53:53,033 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) [2024-01-27 15:53:53,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:53:53,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-01-27 15:53:53,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:53:53,258 INFO L124 PetriNetUnfolderBase]: 725/1163 cut-off events. [2024-01-27 15:53:53,258 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2024-01-27 15:53:53,263 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. [2024-01-27 15:53:53,270 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 47 selfloop transitions, 5 changer transitions 1/61 dead transitions. [2024-01-27 15:53:53,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 61 transitions, 264 flow [2024-01-27 15:53:53,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:53:53,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:53:53,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-01-27 15:53:53,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6125 [2024-01-27 15:53:53,282 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 90 flow. Second operand 4 states and 98 transitions. [2024-01-27 15:53:53,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 61 transitions, 264 flow [2024-01-27 15:53:53,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 61 transitions, 240 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-27 15:53:53,291 INFO L231 Difference]: Finished difference. Result has 39 places, 40 transitions, 112 flow [2024-01-27 15:53:53,292 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} [2024-01-27 15:53:53,296 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2024-01-27 15:53:53,296 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 40 transitions, 112 flow [2024-01-27 15:53:53,297 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) [2024-01-27 15:53:53,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:53:53,297 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] [2024-01-27 15:53:53,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:53:53,297 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)] === [2024-01-27 15:53:53,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:53:53,298 INFO L85 PathProgramCache]: Analyzing trace with hash 53151388, now seen corresponding path program 1 times [2024-01-27 15:53:53,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:53:53,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210244484] [2024-01-27 15:53:53,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:53:53,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:53:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:53:53,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:53:53,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:53:53,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210244484] [2024-01-27 15:53:53,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210244484] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:53:53,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38116433] [2024-01-27 15:53:53,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:53:53,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:53:53,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:53:53,414 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) [2024-01-27 15:53:53,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-27 15:53:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:53:53,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjunts are in the unsatisfiable core [2024-01-27 15:53:53,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:53:53,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:53:53,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:53:53,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:53:53,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38116433] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:53:53,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:53:53,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-01-27 15:53:53,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257238657] [2024-01-27 15:53:53,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:53:53,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:53:53,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:53:53,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:53:53,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-01-27 15:53:53,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-01-27 15:53:53,615 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) [2024-01-27 15:53:53,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:53:53,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-01-27 15:53:53,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:53:53,837 INFO L124 PetriNetUnfolderBase]: 1400/2265 cut-off events. [2024-01-27 15:53:53,837 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2024-01-27 15:53:53,841 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. [2024-01-27 15:53:53,849 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 54 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2024-01-27 15:53:53,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 68 transitions, 306 flow [2024-01-27 15:53:53,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:53:53,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:53:53,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-01-27 15:53:53,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-01-27 15:53:53,851 INFO L175 Difference]: Start difference. First operand has 39 places, 40 transitions, 112 flow. Second operand 5 states and 112 transitions. [2024-01-27 15:53:53,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 68 transitions, 306 flow [2024-01-27 15:53:53,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 68 transitions, 298 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-27 15:53:53,853 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 136 flow [2024-01-27 15:53:53,853 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} [2024-01-27 15:53:53,854 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2024-01-27 15:53:53,854 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 136 flow [2024-01-27 15:53:53,854 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) [2024-01-27 15:53:53,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:53:53,854 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] [2024-01-27 15:53:53,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-27 15:53:54,066 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 [2024-01-27 15:53:54,067 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)] === [2024-01-27 15:53:54,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:53:54,067 INFO L85 PathProgramCache]: Analyzing trace with hash -451192813, now seen corresponding path program 1 times [2024-01-27 15:53:54,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:53:54,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855164284] [2024-01-27 15:53:54,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:53:54,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:53:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:53:54,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:53:54,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:53:54,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855164284] [2024-01-27 15:53:54,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855164284] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:53:54,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:53:54,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:53:54,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800826141] [2024-01-27 15:53:54,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:53:54,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:53:54,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:53:54,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:53:54,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:53:54,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-01-27 15:53:54,138 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) [2024-01-27 15:53:54,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:53:54,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-01-27 15:53:54,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:53:54,388 INFO L124 PetriNetUnfolderBase]: 1416/2410 cut-off events. [2024-01-27 15:53:54,388 INFO L125 PetriNetUnfolderBase]: For 249/249 co-relation queries the response was YES. [2024-01-27 15:53:54,393 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. [2024-01-27 15:53:54,400 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 63 selfloop transitions, 9 changer transitions 0/80 dead transitions. [2024-01-27 15:53:54,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 80 transitions, 374 flow [2024-01-27 15:53:54,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:53:54,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:53:54,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-01-27 15:53:54,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5708333333333333 [2024-01-27 15:53:54,404 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 136 flow. Second operand 6 states and 137 transitions. [2024-01-27 15:53:54,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 80 transitions, 374 flow [2024-01-27 15:53:54,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 80 transitions, 370 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-27 15:53:54,407 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 162 flow [2024-01-27 15:53:54,408 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} [2024-01-27 15:53:54,409 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 10 predicate places. [2024-01-27 15:53:54,409 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 162 flow [2024-01-27 15:53:54,409 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) [2024-01-27 15:53:54,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:53:54,409 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] [2024-01-27 15:53:54,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:53:54,410 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)] === [2024-01-27 15:53:54,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:53:54,410 INFO L85 PathProgramCache]: Analyzing trace with hash 105288168, now seen corresponding path program 1 times [2024-01-27 15:53:54,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:53:54,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102636070] [2024-01-27 15:53:54,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:53:54,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:53:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:53:54,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:53:54,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:53:54,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102636070] [2024-01-27 15:53:54,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102636070] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:53:54,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618062373] [2024-01-27 15:53:54,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:53:54,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:53:54,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:53:54,508 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) [2024-01-27 15:53:54,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-27 15:53:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:53:54,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-27 15:53:54,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:53:54,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:53:54,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:53:54,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:53:54,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618062373] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:53:54,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:53:54,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-01-27 15:53:54,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268011962] [2024-01-27 15:53:54,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:53:54,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:53:54,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:53:54,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:53:54,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-27 15:53:54,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-01-27 15:53:54,688 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) [2024-01-27 15:53:54,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:53:54,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-01-27 15:53:54,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:53:54,935 INFO L124 PetriNetUnfolderBase]: 1268/2156 cut-off events. [2024-01-27 15:53:54,936 INFO L125 PetriNetUnfolderBase]: For 953/953 co-relation queries the response was YES. [2024-01-27 15:53:54,939 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. [2024-01-27 15:53:54,946 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 64 selfloop transitions, 5 changer transitions 4/81 dead transitions. [2024-01-27 15:53:54,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 81 transitions, 408 flow [2024-01-27 15:53:54,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:53:54,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:53:54,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-01-27 15:53:54,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-01-27 15:53:54,948 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 162 flow. Second operand 5 states and 124 transitions. [2024-01-27 15:53:54,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 81 transitions, 408 flow [2024-01-27 15:53:54,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 81 transitions, 397 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-27 15:53:54,951 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 175 flow [2024-01-27 15:53:54,951 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} [2024-01-27 15:53:54,952 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2024-01-27 15:53:54,952 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 175 flow [2024-01-27 15:53:54,952 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) [2024-01-27 15:53:54,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:53:54,953 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 15:53:54,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-27 15:53:55,165 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 [2024-01-27 15:53:55,165 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)] === [2024-01-27 15:53:55,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:53:55,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1496011528, now seen corresponding path program 1 times [2024-01-27 15:53:55,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:53:55,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100191162] [2024-01-27 15:53:55,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:53:55,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:53:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:53:55,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:53:55,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:53:55,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100191162] [2024-01-27 15:53:55,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100191162] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:53:55,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617303943] [2024-01-27 15:53:55,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:53:55,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:53:55,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:53:55,247 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) [2024-01-27 15:53:55,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-27 15:53:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:53:55,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-27 15:53:55,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:53:55,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:53:55,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:53:55,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:53:55,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617303943] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:53:55,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:53:55,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-01-27 15:53:55,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915992314] [2024-01-27 15:53:55,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:53:55,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:53:55,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:53:55,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:53:55,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-27 15:53:55,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-01-27 15:53:55,416 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) [2024-01-27 15:53:55,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:53:55,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-01-27 15:53:55,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:53:55,671 INFO L124 PetriNetUnfolderBase]: 1407/2339 cut-off events. [2024-01-27 15:53:55,671 INFO L125 PetriNetUnfolderBase]: For 2808/2808 co-relation queries the response was YES. [2024-01-27 15:53:55,674 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. [2024-01-27 15:53:55,682 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 76 selfloop transitions, 8 changer transitions 0/91 dead transitions. [2024-01-27 15:53:55,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 91 transitions, 493 flow [2024-01-27 15:53:55,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:53:55,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:53:55,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-01-27 15:53:55,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-01-27 15:53:55,683 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 175 flow. Second operand 6 states and 140 transitions. [2024-01-27 15:53:55,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 91 transitions, 493 flow [2024-01-27 15:53:55,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 91 transitions, 454 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-01-27 15:53:55,686 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 187 flow [2024-01-27 15:53:55,686 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} [2024-01-27 15:53:55,687 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 16 predicate places. [2024-01-27 15:53:55,687 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 187 flow [2024-01-27 15:53:55,687 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) [2024-01-27 15:53:55,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:53:55,687 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] [2024-01-27 15:53:55,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-27 15:53:55,899 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 [2024-01-27 15:53:55,899 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)] === [2024-01-27 15:53:55,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:53:55,900 INFO L85 PathProgramCache]: Analyzing trace with hash 866381750, now seen corresponding path program 1 times [2024-01-27 15:53:55,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:53:55,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323167157] [2024-01-27 15:53:55,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:53:55,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:53:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:53:55,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:53:55,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:53:55,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323167157] [2024-01-27 15:53:55,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323167157] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:53:55,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:53:55,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:53:55,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557264774] [2024-01-27 15:53:55,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:53:55,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:53:55,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:53:55,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:53:55,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:53:55,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-01-27 15:53:55,977 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) [2024-01-27 15:53:55,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:53:55,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-01-27 15:53:55,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:53:56,127 INFO L124 PetriNetUnfolderBase]: 926/1507 cut-off events. [2024-01-27 15:53:56,127 INFO L125 PetriNetUnfolderBase]: For 1493/1493 co-relation queries the response was YES. [2024-01-27 15:53:56,129 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. [2024-01-27 15:53:56,133 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 28 selfloop transitions, 4 changer transitions 33/73 dead transitions. [2024-01-27 15:53:56,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 73 transitions, 385 flow [2024-01-27 15:53:56,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:53:56,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:53:56,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-01-27 15:53:56,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-01-27 15:53:56,135 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 187 flow. Second operand 6 states and 124 transitions. [2024-01-27 15:53:56,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 73 transitions, 385 flow [2024-01-27 15:53:56,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 73 transitions, 382 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:53:56,137 INFO L231 Difference]: Finished difference. Result has 62 places, 40 transitions, 157 flow [2024-01-27 15:53:56,137 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} [2024-01-27 15:53:56,138 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 22 predicate places. [2024-01-27 15:53:56,138 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 40 transitions, 157 flow [2024-01-27 15:53:56,138 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) [2024-01-27 15:53:56,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:53:56,138 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] [2024-01-27 15:53:56,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:53:56,139 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)] === [2024-01-27 15:53:56,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:53:56,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1551400253, now seen corresponding path program 1 times [2024-01-27 15:53:56,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:53:56,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904981533] [2024-01-27 15:53:56,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:53:56,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:53:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:53:56,210 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:53:56,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:53:56,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904981533] [2024-01-27 15:53:56,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904981533] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:53:56,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053817292] [2024-01-27 15:53:56,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:53:56,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:53:56,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:53:56,212 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) [2024-01-27 15:53:56,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-27 15:53:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:53:56,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-27 15:53:56,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:53:56,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:53:56,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:53:56,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:53:56,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053817292] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:53:56,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:53:56,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-01-27 15:53:56,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777561199] [2024-01-27 15:53:56,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:53:56,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:53:56,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:53:56,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:53:56,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-27 15:53:56,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-01-27 15:53:56,378 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) [2024-01-27 15:53:56,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:53:56,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-01-27 15:53:56,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:53:56,497 INFO L124 PetriNetUnfolderBase]: 815/1387 cut-off events. [2024-01-27 15:53:56,497 INFO L125 PetriNetUnfolderBase]: For 1512/1512 co-relation queries the response was YES. [2024-01-27 15:53:56,499 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. [2024-01-27 15:53:56,505 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 41 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2024-01-27 15:53:56,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 307 flow [2024-01-27 15:53:56,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:53:56,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:53:56,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-01-27 15:53:56,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47 [2024-01-27 15:53:56,506 INFO L175 Difference]: Start difference. First operand has 62 places, 40 transitions, 157 flow. Second operand 5 states and 94 transitions. [2024-01-27 15:53:56,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 307 flow [2024-01-27 15:53:56,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 54 transitions, 267 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-01-27 15:53:56,509 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 150 flow [2024-01-27 15:53:56,509 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} [2024-01-27 15:53:56,510 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 11 predicate places. [2024-01-27 15:53:56,510 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 150 flow [2024-01-27 15:53:56,510 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) [2024-01-27 15:53:56,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:53:56,510 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] [2024-01-27 15:53:56,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-27 15:53:56,721 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 [2024-01-27 15:53:56,721 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)] === [2024-01-27 15:53:56,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:53:56,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1631808876, now seen corresponding path program 1 times [2024-01-27 15:53:56,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:53:56,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149659929] [2024-01-27 15:53:56,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:53:56,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:53:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:53:56,944 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-27 15:53:56,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:53:56,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149659929] [2024-01-27 15:53:56,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149659929] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:53:56,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:53:56,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:53:56,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61988576] [2024-01-27 15:53:56,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:53:56,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:53:56,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:53:56,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:53:56,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:53:56,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-01-27 15:53:56,959 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) [2024-01-27 15:53:56,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:53:56,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-01-27 15:53:56,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:53:57,295 INFO L124 PetriNetUnfolderBase]: 1621/2607 cut-off events. [2024-01-27 15:53:57,296 INFO L125 PetriNetUnfolderBase]: For 1543/1543 co-relation queries the response was YES. [2024-01-27 15:53:57,299 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. [2024-01-27 15:53:57,308 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 101 selfloop transitions, 17 changer transitions 9/133 dead transitions. [2024-01-27 15:53:57,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 133 transitions, 705 flow [2024-01-27 15:53:57,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:53:57,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:53:57,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-01-27 15:53:57,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-01-27 15:53:57,310 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 150 flow. Second operand 9 states and 183 transitions. [2024-01-27 15:53:57,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 133 transitions, 705 flow [2024-01-27 15:53:57,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 133 transitions, 697 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-27 15:53:57,314 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 278 flow [2024-01-27 15:53:57,314 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} [2024-01-27 15:53:57,315 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 21 predicate places. [2024-01-27 15:53:57,315 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 278 flow [2024-01-27 15:53:57,315 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) [2024-01-27 15:53:57,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:53:57,316 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] [2024-01-27 15:53:57,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 15:53:57,316 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)] === [2024-01-27 15:53:57,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:53:57,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1273680171, now seen corresponding path program 2 times [2024-01-27 15:53:57,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:53:57,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647717605] [2024-01-27 15:53:57,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:53:57,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:53:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:53:57,412 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-27 15:53:57,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:53:57,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647717605] [2024-01-27 15:53:57,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647717605] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:53:57,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727288222] [2024-01-27 15:53:57,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:53:57,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:53:57,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:53:57,414 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) [2024-01-27 15:53:57,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-27 15:53:57,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 15:53:57,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:53:57,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 8 conjunts are in the unsatisfiable core [2024-01-27 15:53:57,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:53:57,582 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-27 15:53:57,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:53:57,623 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-27 15:53:57,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727288222] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:53:57,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:53:57,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-01-27 15:53:57,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398278559] [2024-01-27 15:53:57,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:53:57,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-01-27 15:53:57,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:53:57,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-01-27 15:53:57,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-01-27 15:53:57,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-01-27 15:53:57,646 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) [2024-01-27 15:53:57,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:53:57,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-01-27 15:53:57,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:53:58,013 INFO L124 PetriNetUnfolderBase]: 1703/3014 cut-off events. [2024-01-27 15:53:58,013 INFO L125 PetriNetUnfolderBase]: For 4447/4512 co-relation queries the response was YES. [2024-01-27 15:53:58,021 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. [2024-01-27 15:53:58,031 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 37 selfloop transitions, 6 changer transitions 51/110 dead transitions. [2024-01-27 15:53:58,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 110 transitions, 692 flow [2024-01-27 15:53:58,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 15:53:58,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 15:53:58,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-01-27 15:53:58,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445 [2024-01-27 15:53:58,032 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 278 flow. Second operand 10 states and 178 transitions. [2024-01-27 15:53:58,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 110 transitions, 692 flow [2024-01-27 15:53:58,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 110 transitions, 692 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 15:53:58,043 INFO L231 Difference]: Finished difference. Result has 76 places, 59 transitions, 330 flow [2024-01-27 15:53:58,044 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} [2024-01-27 15:53:58,044 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 36 predicate places. [2024-01-27 15:53:58,045 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 59 transitions, 330 flow [2024-01-27 15:53:58,045 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) [2024-01-27 15:53:58,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:53:58,045 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] [2024-01-27 15:53:58,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-01-27 15:53:58,260 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 [2024-01-27 15:53:58,260 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)] === [2024-01-27 15:53:58,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:53:58,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1410938646, now seen corresponding path program 3 times [2024-01-27 15:53:58,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:53:58,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174536604] [2024-01-27 15:53:58,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:53:58,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:53:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:53:58,351 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-01-27 15:53:58,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:53:58,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174536604] [2024-01-27 15:53:58,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174536604] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:53:58,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273819891] [2024-01-27 15:53:58,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-27 15:53:58,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:53:58,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:53:58,353 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) [2024-01-27 15:53:58,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-01-27 15:53:58,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-01-27 15:53:58,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:53:58,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 8 conjunts are in the unsatisfiable core [2024-01-27 15:53:58,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:53:58,497 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-01-27 15:53:58,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:53:58,538 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-01-27 15:53:58,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273819891] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:53:58,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:53:58,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-01-27 15:53:58,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460648069] [2024-01-27 15:53:58,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:53:58,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-01-27 15:53:58,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:53:58,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-01-27 15:53:58,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-01-27 15:53:58,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-01-27 15:53:58,564 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) [2024-01-27 15:53:58,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:53:58,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-01-27 15:53:58,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:53:58,854 INFO L124 PetriNetUnfolderBase]: 1293/2129 cut-off events. [2024-01-27 15:53:58,854 INFO L125 PetriNetUnfolderBase]: For 3642/3844 co-relation queries the response was YES. [2024-01-27 15:53:58,860 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. [2024-01-27 15:53:58,873 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 75 selfloop transitions, 9 changer transitions 0/102 dead transitions. [2024-01-27 15:53:58,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 102 transitions, 768 flow [2024-01-27 15:53:58,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:53:58,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:53:58,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-01-27 15:53:58,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-01-27 15:53:58,874 INFO L175 Difference]: Start difference. First operand has 76 places, 59 transitions, 330 flow. Second operand 9 states and 159 transitions. [2024-01-27 15:53:58,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 102 transitions, 768 flow [2024-01-27 15:53:58,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 102 transitions, 710 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-01-27 15:53:58,880 INFO L231 Difference]: Finished difference. Result has 73 places, 60 transitions, 330 flow [2024-01-27 15:53:58,881 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} [2024-01-27 15:53:58,882 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 33 predicate places. [2024-01-27 15:53:58,882 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 60 transitions, 330 flow [2024-01-27 15:53:58,882 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) [2024-01-27 15:53:58,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:53:58,882 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] [2024-01-27 15:53:58,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-01-27 15:53:59,094 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 [2024-01-27 15:53:59,094 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)] === [2024-01-27 15:53:59,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:53:59,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1727243452, now seen corresponding path program 4 times [2024-01-27 15:53:59,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:53:59,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65709400] [2024-01-27 15:53:59,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:53:59,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:53:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:53:59,188 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-01-27 15:53:59,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:53:59,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65709400] [2024-01-27 15:53:59,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65709400] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:53:59,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280182625] [2024-01-27 15:53:59,189 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-27 15:53:59,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:53:59,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:53:59,205 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) [2024-01-27 15:53:59,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-01-27 15:53:59,289 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-27 15:53:59,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:53:59,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-27 15:53:59,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:53:59,353 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-01-27 15:53:59,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:53:59,399 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-01-27 15:53:59,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280182625] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:53:59,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:53:59,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2024-01-27 15:53:59,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547711143] [2024-01-27 15:53:59,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:53:59,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-01-27 15:53:59,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:53:59,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-01-27 15:53:59,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-01-27 15:53:59,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-01-27 15:53:59,428 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) [2024-01-27 15:53:59,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:53:59,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-01-27 15:53:59,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:54:00,006 INFO L124 PetriNetUnfolderBase]: 2260/3980 cut-off events. [2024-01-27 15:54:00,007 INFO L125 PetriNetUnfolderBase]: For 6533/6581 co-relation queries the response was YES. [2024-01-27 15:54:00,017 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. [2024-01-27 15:54:00,032 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 135 selfloop transitions, 39 changer transitions 0/190 dead transitions. [2024-01-27 15:54:00,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 190 transitions, 1298 flow [2024-01-27 15:54:00,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-01-27 15:54:00,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-01-27 15:54:00,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 328 transitions. [2024-01-27 15:54:00,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-01-27 15:54:00,034 INFO L175 Difference]: Start difference. First operand has 73 places, 60 transitions, 330 flow. Second operand 18 states and 328 transitions. [2024-01-27 15:54:00,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 190 transitions, 1298 flow [2024-01-27 15:54:00,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 190 transitions, 1254 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-01-27 15:54:00,043 INFO L231 Difference]: Finished difference. Result has 90 places, 86 transitions, 586 flow [2024-01-27 15:54:00,043 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} [2024-01-27 15:54:00,044 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 50 predicate places. [2024-01-27 15:54:00,044 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 86 transitions, 586 flow [2024-01-27 15:54:00,044 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) [2024-01-27 15:54:00,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:54:00,044 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] [2024-01-27 15:54:00,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-01-27 15:54:00,255 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 [2024-01-27 15:54:00,256 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)] === [2024-01-27 15:54:00,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:54:00,256 INFO L85 PathProgramCache]: Analyzing trace with hash -618484819, now seen corresponding path program 5 times [2024-01-27 15:54:00,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:54:00,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147335729] [2024-01-27 15:54:00,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:54:00,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:54:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:54:00,423 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-01-27 15:54:00,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:54:00,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147335729] [2024-01-27 15:54:00,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147335729] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:54:00,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44870798] [2024-01-27 15:54:00,425 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-27 15:54:00,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:54:00,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:54:00,426 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) [2024-01-27 15:54:00,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-01-27 15:54:00,515 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-01-27 15:54:00,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:54:00,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-27 15:54:00,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:54:00,614 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-01-27 15:54:00,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:54:00,695 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-01-27 15:54:00,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44870798] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:54:00,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:54:00,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-01-27 15:54:00,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470250335] [2024-01-27 15:54:00,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:54:00,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-01-27 15:54:00,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:54:00,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-01-27 15:54:00,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-01-27 15:54:00,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-01-27 15:54:00,711 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) [2024-01-27 15:54:00,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:54:00,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-01-27 15:54:00,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:54:04,469 INFO L124 PetriNetUnfolderBase]: 12441/17558 cut-off events. [2024-01-27 15:54:04,469 INFO L125 PetriNetUnfolderBase]: For 37418/37418 co-relation queries the response was YES. [2024-01-27 15:54:04,505 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. [2024-01-27 15:54:04,521 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 0 selfloop transitions, 0 changer transitions 1307/1307 dead transitions. [2024-01-27 15:54:04,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 1307 transitions, 9843 flow [2024-01-27 15:54:04,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-01-27 15:54:04,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2024-01-27 15:54:04,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 1288 transitions. [2024-01-27 15:54:04,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777777777777775 [2024-01-27 15:54:04,527 INFO L175 Difference]: Start difference. First operand has 90 places, 86 transitions, 586 flow. Second operand 90 states and 1288 transitions. [2024-01-27 15:54:04,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 1307 transitions, 9843 flow [2024-01-27 15:54:04,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 1307 transitions, 9340 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-01-27 15:54:04,621 INFO L231 Difference]: Finished difference. Result has 165 places, 0 transitions, 0 flow [2024-01-27 15:54:04,621 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} [2024-01-27 15:54:04,622 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 125 predicate places. [2024-01-27 15:54:04,622 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 0 transitions, 0 flow [2024-01-27 15:54:04,622 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) [2024-01-27 15:54:04,625 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-01-27 15:54:04,625 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-01-27 15:54:04,625 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-01-27 15:54:04,625 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-01-27 15:54:04,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-01-27 15:54:04,839 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 [2024-01-27 15:54:04,839 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:54:04,842 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 15:54:04,842 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 15:54:04,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 03:54:04 BasicIcfg [2024-01-27 15:54:04,846 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 15:54:04,846 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-01-27 15:54:04,847 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-01-27 15:54:04,847 INFO L274 PluginConnector]: Witness Printer initialized [2024-01-27 15:54:04,847 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:53:51" (3/4) ... [2024-01-27 15:54:04,849 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-01-27 15:54:04,851 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-01-27 15:54:04,851 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-01-27 15:54:04,851 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-01-27 15:54:04,855 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2024-01-27 15:54:04,856 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2024-01-27 15:54:04,856 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-01-27 15:54:04,856 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-01-27 15:54:04,937 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-01-27 15:54:04,938 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-01-27 15:54:04,938 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-01-27 15:54:04,938 INFO L158 Benchmark]: Toolchain (without parser) took 13970.52ms. Allocated memory was 167.8MB in the beginning and 453.0MB in the end (delta: 285.2MB). Free memory was 110.2MB in the beginning and 167.8MB in the end (delta: -57.6MB). Peak memory consumption was 230.0MB. Max. memory is 16.1GB. [2024-01-27 15:54:04,939 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 167.8MB. Free memory is still 127.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:54:04,939 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.52ms. Allocated memory is still 167.8MB. Free memory was 109.9MB in the beginning and 97.7MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-01-27 15:54:04,939 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.48ms. Allocated memory is still 167.8MB. Free memory was 97.7MB in the beginning and 95.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:54:04,940 INFO L158 Benchmark]: Boogie Preprocessor took 65.90ms. Allocated memory is still 167.8MB. Free memory was 95.8MB in the beginning and 92.4MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 15:54:04,940 INFO L158 Benchmark]: RCFGBuilder took 668.73ms. Allocated memory was 167.8MB in the beginning and 230.7MB in the end (delta: 62.9MB). Free memory was 92.4MB in the beginning and 165.1MB in the end (delta: -72.7MB). Peak memory consumption was 23.0MB. Max. memory is 16.1GB. [2024-01-27 15:54:04,940 INFO L158 Benchmark]: TraceAbstraction took 12893.96ms. Allocated memory was 230.7MB in the beginning and 453.0MB in the end (delta: 222.3MB). Free memory was 164.0MB in the beginning and 173.7MB in the end (delta: -9.7MB). Peak memory consumption was 301.4MB. Max. memory is 16.1GB. [2024-01-27 15:54:04,940 INFO L158 Benchmark]: Witness Printer took 91.27ms. Allocated memory is still 453.0MB. Free memory was 173.7MB in the beginning and 167.8MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-01-27 15:54:04,943 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 167.8MB. Free memory is still 127.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 210.52ms. Allocated memory is still 167.8MB. Free memory was 109.9MB in the beginning and 97.7MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.48ms. Allocated memory is still 167.8MB. Free memory was 97.7MB in the beginning and 95.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.90ms. Allocated memory is still 167.8MB. Free memory was 95.8MB in the beginning and 92.4MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 668.73ms. Allocated memory was 167.8MB in the beginning and 230.7MB in the end (delta: 62.9MB). Free memory was 92.4MB in the beginning and 165.1MB in the end (delta: -72.7MB). Peak memory consumption was 23.0MB. Max. memory is 16.1GB. * TraceAbstraction took 12893.96ms. Allocated memory was 230.7MB in the beginning and 453.0MB in the end (delta: 222.3MB). Free memory was 164.0MB in the beginning and 173.7MB in the end (delta: -9.7MB). Peak memory consumption was 301.4MB. Max. memory is 16.1GB. * Witness Printer took 91.27ms. Allocated memory is still 453.0MB. Free memory was 173.7MB in the beginning and 167.8MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. 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: 12.8s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1118 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1073 mSDsluCounter, 133 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 119 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4769 IncrementalHoareTripleChecker+Invalid, 4814 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 14 mSDtfsCounter, 4769 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 787 GetRequests, 576 SyntacticMatches, 14 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3623 ImplicationChecksByTransitivity, 1.9s 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, 2.3s InterpolantComputationTime, 650 NumberOfCodeBlocks, 623 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 893 ConstructedInterpolants, 0 QuantifiedInterpolants, 2749 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! [2024-01-27 15:54:04,973 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