./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/unroll-5.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/unroll-5.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 624ca078114fa3c35bb1960efece3c50cba0d03b97522c4936fd5f6e5d783f29 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:57:29,235 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:57:29,294 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:57:29,298 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:57:29,299 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:57:29,336 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:57:29,336 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:57:29,337 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:57:29,337 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:57:29,340 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:57:29,340 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:57:29,341 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:57:29,341 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:57:29,342 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:57:29,343 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:57:29,348 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:57:29,348 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:57:29,348 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:57:29,349 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:57:29,349 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:57:29,349 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:57:29,349 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:57:29,349 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:57:29,350 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:57:29,350 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:57:29,350 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:57:29,350 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:57:29,350 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:57:29,351 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:57:29,351 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:57:29,352 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:57:29,352 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:57:29,352 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:57:29,353 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:57:29,353 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:57:29,353 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:57:29,353 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:57:29,353 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:57:29,353 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:57:29,354 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:57:29,354 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:57:29,354 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:57:29,354 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:57:29,354 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 624ca078114fa3c35bb1960efece3c50cba0d03b97522c4936fd5f6e5d783f29 [2024-01-27 15:57:29,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:57:29,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:57:29,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:57:29,636 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:57:29,636 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:57:29,637 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-5.wvr.c [2024-01-27 15:57:30,903 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:57:31,121 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:57:31,122 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-5.wvr.c [2024-01-27 15:57:31,128 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1814f45f1/3cf96f64d6604adbb009c4d39a1bfba0/FLAG336a87ebd [2024-01-27 15:57:31,139 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1814f45f1/3cf96f64d6604adbb009c4d39a1bfba0 [2024-01-27 15:57:31,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:57:31,142 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:57:31,143 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:57:31,143 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:57:31,151 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:57:31,152 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:57:31" (1/1) ... [2024-01-27 15:57:31,153 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@362374e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:31, skipping insertion in model container [2024-01-27 15:57:31,153 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:57:31" (1/1) ... [2024-01-27 15:57:31,201 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:57:31,420 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/unroll-5.wvr.c[2670,2683] [2024-01-27 15:57:31,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:57:31,437 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:57:31,454 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/unroll-5.wvr.c[2670,2683] [2024-01-27 15:57:31,457 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:57:31,469 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:57:31,470 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:31 WrapperNode [2024-01-27 15:57:31,470 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:57:31,471 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:57:31,471 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:57:31,472 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:57:31,478 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:31" (1/1) ... [2024-01-27 15:57:31,484 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:31" (1/1) ... [2024-01-27 15:57:31,505 INFO L138 Inliner]: procedures = 24, calls = 38, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 169 [2024-01-27 15:57:31,505 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:57:31,506 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:57:31,506 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:57:31,506 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:57:31,515 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:31" (1/1) ... [2024-01-27 15:57:31,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:31" (1/1) ... [2024-01-27 15:57:31,518 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:31" (1/1) ... [2024-01-27 15:57:31,534 INFO L175 MemorySlicer]: Split 13 memory accesses to 4 slices as follows [2, 2, 2, 7]. 54 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-01-27 15:57:31,535 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:31" (1/1) ... [2024-01-27 15:57:31,535 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:31" (1/1) ... [2024-01-27 15:57:31,540 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:31" (1/1) ... [2024-01-27 15:57:31,543 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:31" (1/1) ... [2024-01-27 15:57:31,544 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:31" (1/1) ... [2024-01-27 15:57:31,546 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:31" (1/1) ... [2024-01-27 15:57:31,549 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:57:31,550 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:57:31,550 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:57:31,550 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:57:31,551 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:31" (1/1) ... [2024-01-27 15:57:31,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:57:31,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:57:31,596 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 15:57:31,616 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 15:57:31,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:57:31,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:57:31,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:57:31,642 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:57:31,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:57:31,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:57:31,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:57:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:57:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:57:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:57:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:57:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:57:31,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:57:31,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:57:31,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-27 15:57:31,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:57:31,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:57:31,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:57:31,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:57:31,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:57:31,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:57:31,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:57:31,649 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 15:57:31,770 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:57:31,773 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:57:32,050 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:57:32,050 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:57:32,302 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:57:32,303 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-01-27 15:57:32,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:57:32 BoogieIcfgContainer [2024-01-27 15:57:32,303 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:57:32,305 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:57:32,305 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:57:32,308 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:57:32,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:57:31" (1/3) ... [2024-01-27 15:57:32,308 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b151c4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:57:32, skipping insertion in model container [2024-01-27 15:57:32,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:57:31" (2/3) ... [2024-01-27 15:57:32,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b151c4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:57:32, skipping insertion in model container [2024-01-27 15:57:32,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:57:32" (3/3) ... [2024-01-27 15:57:32,310 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-5.wvr.c [2024-01-27 15:57:32,316 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:57:32,324 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:57:32,325 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:57:32,325 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:57:32,374 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-27 15:57:32,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 21 transitions, 56 flow [2024-01-27 15:57:32,442 INFO L124 PetriNetUnfolderBase]: 3/19 cut-off events. [2024-01-27 15:57:32,443 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 15:57:32,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 19 events. 3/19 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-01-27 15:57:32,445 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 21 transitions, 56 flow [2024-01-27 15:57:32,448 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 18 transitions, 48 flow [2024-01-27 15:57:32,466 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:57:32,474 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;@1baadc1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:57:32,474 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-01-27 15:57:32,486 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:57:32,487 INFO L124 PetriNetUnfolderBase]: 3/17 cut-off events. [2024-01-27 15:57:32,487 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 15:57:32,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:57:32,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:57:32,488 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:57:32,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:57:32,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1389057935, now seen corresponding path program 1 times [2024-01-27 15:57:32,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:57:32,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014040912] [2024-01-27 15:57:32,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:57:32,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:57:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:57:32,850 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 15:57:32,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:57:32,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014040912] [2024-01-27 15:57:32,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014040912] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:57:32,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:57:32,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:57:32,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830848104] [2024-01-27 15:57:32,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:57:32,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:57:32,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:57:32,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:57:32,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:57:32,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 15:57:32,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 18 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 15:57:32,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:57:32,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 15:57:32,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:57:32,978 INFO L124 PetriNetUnfolderBase]: 41/77 cut-off events. [2024-01-27 15:57:32,980 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-01-27 15:57:32,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 77 events. 41/77 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 130 event pairs, 24 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 120. Up to 76 conditions per place. [2024-01-27 15:57:32,984 INFO L140 encePairwiseOnDemand]: 18/21 looper letters, 16 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2024-01-27 15:57:32,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 19 transitions, 86 flow [2024-01-27 15:57:32,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:57:32,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:57:32,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2024-01-27 15:57:32,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-01-27 15:57:32,999 INFO L175 Difference]: Start difference. First operand has 22 places, 18 transitions, 48 flow. Second operand 3 states and 28 transitions. [2024-01-27 15:57:33,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 19 transitions, 86 flow [2024-01-27 15:57:33,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 19 transitions, 78 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 15:57:33,004 INFO L231 Difference]: Finished difference. Result has 21 places, 19 transitions, 52 flow [2024-01-27 15:57:33,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=21, PETRI_TRANSITIONS=19} [2024-01-27 15:57:33,010 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -1 predicate places. [2024-01-27 15:57:33,011 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 19 transitions, 52 flow [2024-01-27 15:57:33,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 15:57:33,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:57:33,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:57:33,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:57:33,012 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:57:33,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:57:33,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1505953732, now seen corresponding path program 1 times [2024-01-27 15:57:33,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:57:33,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812470241] [2024-01-27 15:57:33,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:57:33,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:57:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:57:33,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:57:33,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:57:33,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812470241] [2024-01-27 15:57:33,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812470241] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:57:33,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:57:33,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:57:33,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542165094] [2024-01-27 15:57:33,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:57:33,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:57:33,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:57:33,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:57:33,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:57:33,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 15:57:33,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 19 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 15:57:33,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:57:33,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 15:57:33,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:57:33,272 INFO L124 PetriNetUnfolderBase]: 75/138 cut-off events. [2024-01-27 15:57:33,272 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-27 15:57:33,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 138 events. 75/138 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 353 event pairs, 24 based on Foata normal form. 1/106 useless extension candidates. Maximal degree in co-relation 279. Up to 79 conditions per place. [2024-01-27 15:57:33,275 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 26 selfloop transitions, 3 changer transitions 1/31 dead transitions. [2024-01-27 15:57:33,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 31 transitions, 139 flow [2024-01-27 15:57:33,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:57:33,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:57:33,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 39 transitions. [2024-01-27 15:57:33,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-01-27 15:57:33,278 INFO L175 Difference]: Start difference. First operand has 21 places, 19 transitions, 52 flow. Second operand 3 states and 39 transitions. [2024-01-27 15:57:33,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 31 transitions, 139 flow [2024-01-27 15:57:33,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 31 transitions, 135 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-27 15:57:33,279 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 67 flow [2024-01-27 15:57:33,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2024-01-27 15:57:33,280 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2024-01-27 15:57:33,280 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 67 flow [2024-01-27 15:57:33,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 15:57:33,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:57:33,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:57:33,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:57:33,285 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:57:33,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:57:33,287 INFO L85 PathProgramCache]: Analyzing trace with hash 542600447, now seen corresponding path program 1 times [2024-01-27 15:57:33,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:57:33,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445376225] [2024-01-27 15:57:33,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:57:33,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:57:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:57:33,442 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 15:57:33,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:57:33,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445376225] [2024-01-27 15:57:33,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445376225] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:57:33,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:57:33,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:57:33,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434985076] [2024-01-27 15:57:33,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:57:33,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:57:33,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:57:33,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:57:33,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:57:33,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 15:57:33,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 67 flow. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 15:57:33,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:57:33,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 15:57:33,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:57:33,551 INFO L124 PetriNetUnfolderBase]: 93/184 cut-off events. [2024-01-27 15:57:33,551 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-01-27 15:57:33,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 184 events. 93/184 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 609 event pairs, 26 based on Foata normal form. 14/197 useless extension candidates. Maximal degree in co-relation 420. Up to 89 conditions per place. [2024-01-27 15:57:33,552 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 31 selfloop transitions, 7 changer transitions 11/50 dead transitions. [2024-01-27 15:57:33,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 50 transitions, 244 flow [2024-01-27 15:57:33,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:57:33,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:57:33,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 66 transitions. [2024-01-27 15:57:33,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-01-27 15:57:33,553 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 67 flow. Second operand 6 states and 66 transitions. [2024-01-27 15:57:33,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 50 transitions, 244 flow [2024-01-27 15:57:33,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 50 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:57:33,555 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 124 flow [2024-01-27 15:57:33,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=124, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2024-01-27 15:57:33,555 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 9 predicate places. [2024-01-27 15:57:33,556 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 124 flow [2024-01-27 15:57:33,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 15:57:33,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:57:33,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:57:33,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:57:33,556 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:57:33,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:57:33,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1539876633, now seen corresponding path program 1 times [2024-01-27 15:57:33,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:57:33,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232030422] [2024-01-27 15:57:33,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:57:33,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:57:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:57:33,635 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 15:57:33,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:57:33,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232030422] [2024-01-27 15:57:33,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232030422] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:57:33,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:57:33,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:57:33,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538781765] [2024-01-27 15:57:33,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:57:33,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:57:33,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:57:33,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:57:33,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:57:33,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 15:57:33,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 15:57:33,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:57:33,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 15:57:33,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:57:33,747 INFO L124 PetriNetUnfolderBase]: 88/172 cut-off events. [2024-01-27 15:57:33,748 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2024-01-27 15:57:33,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 575 conditions, 172 events. 88/172 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 512 event pairs, 23 based on Foata normal form. 4/175 useless extension candidates. Maximal degree in co-relation 554. Up to 104 conditions per place. [2024-01-27 15:57:33,749 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 29 selfloop transitions, 6 changer transitions 4/40 dead transitions. [2024-01-27 15:57:33,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 40 transitions, 257 flow [2024-01-27 15:57:33,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:57:33,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:57:33,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2024-01-27 15:57:33,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-01-27 15:57:33,750 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 124 flow. Second operand 4 states and 46 transitions. [2024-01-27 15:57:33,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 40 transitions, 257 flow [2024-01-27 15:57:33,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 40 transitions, 239 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-01-27 15:57:33,752 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 144 flow [2024-01-27 15:57:33,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2024-01-27 15:57:33,753 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 11 predicate places. [2024-01-27 15:57:33,753 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 144 flow [2024-01-27 15:57:33,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 15:57:33,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:57:33,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:57:33,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:57:33,754 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:57:33,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:57:33,754 INFO L85 PathProgramCache]: Analyzing trace with hash 190691699, now seen corresponding path program 2 times [2024-01-27 15:57:33,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:57:33,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61398279] [2024-01-27 15:57:33,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:57:33,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:57:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:57:33,824 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 15:57:33,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:57:33,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61398279] [2024-01-27 15:57:33,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61398279] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:57:33,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:57:33,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:57:33,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878021587] [2024-01-27 15:57:33,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:57:33,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:57:33,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:57:33,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:57:33,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:57:33,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 15:57:33,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 15:57:33,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:57:33,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 15:57:33,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:57:33,930 INFO L124 PetriNetUnfolderBase]: 105/206 cut-off events. [2024-01-27 15:57:33,931 INFO L125 PetriNetUnfolderBase]: For 284/284 co-relation queries the response was YES. [2024-01-27 15:57:33,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 206 events. 105/206 cut-off events. For 284/284 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 657 event pairs, 38 based on Foata normal form. 2/207 useless extension candidates. Maximal degree in co-relation 676. Up to 133 conditions per place. [2024-01-27 15:57:33,934 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 32 selfloop transitions, 8 changer transitions 8/49 dead transitions. [2024-01-27 15:57:33,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 49 transitions, 336 flow [2024-01-27 15:57:33,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:57:33,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:57:33,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions. [2024-01-27 15:57:33,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-01-27 15:57:33,937 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 144 flow. Second operand 5 states and 54 transitions. [2024-01-27 15:57:33,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 49 transitions, 336 flow [2024-01-27 15:57:33,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 49 transitions, 330 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:57:33,946 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 206 flow [2024-01-27 15:57:33,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2024-01-27 15:57:33,949 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 17 predicate places. [2024-01-27 15:57:33,949 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 206 flow [2024-01-27 15:57:33,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 15:57:33,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:57:33,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:57:33,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:57:33,951 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:57:33,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:57:33,952 INFO L85 PathProgramCache]: Analyzing trace with hash 993170755, now seen corresponding path program 3 times [2024-01-27 15:57:33,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:57:33,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465482764] [2024-01-27 15:57:33,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:57:33,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:57:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:57:34,076 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 15:57:34,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:57:34,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465482764] [2024-01-27 15:57:34,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465482764] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:57:34,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324674576] [2024-01-27 15:57:34,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-27 15:57:34,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:57:34,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:57:34,079 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 15:57:34,095 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 15:57:34,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-01-27 15:57:34,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:57:34,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-27 15:57:34,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:57:34,276 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 15:57:34,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:57:34,323 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 15:57:34,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324674576] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:57:34,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:57:34,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2024-01-27 15:57:34,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559404384] [2024-01-27 15:57:34,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:57:34,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:57:34,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:57:34,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:57:34,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:57:34,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 15:57:34,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 15:57:34,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:57:34,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 15:57:34,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:57:34,405 INFO L124 PetriNetUnfolderBase]: 104/200 cut-off events. [2024-01-27 15:57:34,405 INFO L125 PetriNetUnfolderBase]: For 410/410 co-relation queries the response was YES. [2024-01-27 15:57:34,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 803 conditions, 200 events. 104/200 cut-off events. For 410/410 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 596 event pairs, 29 based on Foata normal form. 6/205 useless extension candidates. Maximal degree in co-relation 778. Up to 144 conditions per place. [2024-01-27 15:57:34,406 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 34 selfloop transitions, 8 changer transitions 3/46 dead transitions. [2024-01-27 15:57:34,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 46 transitions, 361 flow [2024-01-27 15:57:34,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:57:34,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:57:34,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2024-01-27 15:57:34,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-01-27 15:57:34,407 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 206 flow. Second operand 4 states and 47 transitions. [2024-01-27 15:57:34,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 46 transitions, 361 flow [2024-01-27 15:57:34,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 46 transitions, 339 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-01-27 15:57:34,410 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 234 flow [2024-01-27 15:57:34,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-01-27 15:57:34,410 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 19 predicate places. [2024-01-27 15:57:34,411 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 234 flow [2024-01-27 15:57:34,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 15:57:34,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:57:34,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:57:34,428 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 15:57:34,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-01-27 15:57:34,623 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:57:34,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:57:34,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1594897815, now seen corresponding path program 4 times [2024-01-27 15:57:34,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:57:34,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393058994] [2024-01-27 15:57:34,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:57:34,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:57:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:57:34,687 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 15:57:34,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:57:34,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393058994] [2024-01-27 15:57:34,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393058994] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:57:34,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80732311] [2024-01-27 15:57:34,687 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-27 15:57:34,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:57:34,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:57:34,688 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 15:57:34,704 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 15:57:34,772 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-27 15:57:34,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:57:34,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-27 15:57:34,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:57:34,795 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 15:57:34,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:57:34,823 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 15:57:34,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80732311] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:57:34,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:57:34,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2024-01-27 15:57:34,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011449027] [2024-01-27 15:57:34,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:57:34,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:57:34,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:57:34,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:57:34,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:57:34,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 15:57:34,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 234 flow. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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 15:57:34,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:57:34,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 15:57:34,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:57:34,965 INFO L124 PetriNetUnfolderBase]: 120/228 cut-off events. [2024-01-27 15:57:34,965 INFO L125 PetriNetUnfolderBase]: For 596/596 co-relation queries the response was YES. [2024-01-27 15:57:34,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 228 events. 120/228 cut-off events. For 596/596 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 736 event pairs, 28 based on Foata normal form. 6/233 useless extension candidates. Maximal degree in co-relation 921. Up to 127 conditions per place. [2024-01-27 15:57:34,967 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 44 selfloop transitions, 17 changer transitions 0/62 dead transitions. [2024-01-27 15:57:34,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 62 transitions, 474 flow [2024-01-27 15:57:34,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:57:34,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:57:34,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-01-27 15:57:34,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034013605442177 [2024-01-27 15:57:34,969 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 234 flow. Second operand 7 states and 74 transitions. [2024-01-27 15:57:34,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 62 transitions, 474 flow [2024-01-27 15:57:34,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 464 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-27 15:57:34,971 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 296 flow [2024-01-27 15:57:34,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=296, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-01-27 15:57:34,972 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 26 predicate places. [2024-01-27 15:57:34,972 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 296 flow [2024-01-27 15:57:34,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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 15:57:34,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:57:34,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:57:35,008 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 15:57:35,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-01-27 15:57:35,186 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:57:35,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:57:35,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1292481915, now seen corresponding path program 2 times [2024-01-27 15:57:35,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:57:35,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385318502] [2024-01-27 15:57:35,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:57:35,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:57:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:57:35,299 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 15:57:35,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:57:35,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385318502] [2024-01-27 15:57:35,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385318502] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:57:35,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:57:35,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:57:35,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698870391] [2024-01-27 15:57:35,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:57:35,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:57:35,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:57:35,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:57:35,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:57:35,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 15:57:35,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 15:57:35,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:57:35,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 15:57:35,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:57:35,373 INFO L124 PetriNetUnfolderBase]: 120/221 cut-off events. [2024-01-27 15:57:35,374 INFO L125 PetriNetUnfolderBase]: For 841/841 co-relation queries the response was YES. [2024-01-27 15:57:35,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1052 conditions, 221 events. 120/221 cut-off events. For 841/841 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 691 event pairs, 42 based on Foata normal form. 4/224 useless extension candidates. Maximal degree in co-relation 1024. Up to 169 conditions per place. [2024-01-27 15:57:35,376 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 32 selfloop transitions, 12 changer transitions 3/48 dead transitions. [2024-01-27 15:57:35,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 48 transitions, 450 flow [2024-01-27 15:57:35,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:57:35,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:57:35,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2024-01-27 15:57:35,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-01-27 15:57:35,378 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 296 flow. Second operand 4 states and 44 transitions. [2024-01-27 15:57:35,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 48 transitions, 450 flow [2024-01-27 15:57:35,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 427 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-01-27 15:57:35,382 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 319 flow [2024-01-27 15:57:35,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=319, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2024-01-27 15:57:35,384 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 28 predicate places. [2024-01-27 15:57:35,384 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 319 flow [2024-01-27 15:57:35,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 15:57:35,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:57:35,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:57:35,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 15:57:35,385 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:57:35,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:57:35,386 INFO L85 PathProgramCache]: Analyzing trace with hash 697833135, now seen corresponding path program 5 times [2024-01-27 15:57:35,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:57:35,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293834300] [2024-01-27 15:57:35,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:57:35,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:57:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:57:35,458 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 15:57:35,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:57:35,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293834300] [2024-01-27 15:57:35,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293834300] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:57:35,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472645777] [2024-01-27 15:57:35,459 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-27 15:57:35,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:57:35,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:57:35,460 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 15:57:35,500 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 15:57:35,549 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 15:57:35,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:57:35,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-27 15:57:35,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:57:35,579 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 15:57:35,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:57:35,615 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 15:57:35,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472645777] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:57:35,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:57:35,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-01-27 15:57:35,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884412037] [2024-01-27 15:57:35,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:57:35,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-27 15:57:35,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:57:35,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-27 15:57:35,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-01-27 15:57:35,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 15:57:35,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 319 flow. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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 15:57:35,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:57:35,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 15:57:35,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:57:35,714 INFO L124 PetriNetUnfolderBase]: 111/206 cut-off events. [2024-01-27 15:57:35,714 INFO L125 PetriNetUnfolderBase]: For 878/878 co-relation queries the response was YES. [2024-01-27 15:57:35,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 206 events. 111/206 cut-off events. For 878/878 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 606 event pairs, 31 based on Foata normal form. 6/211 useless extension candidates. Maximal degree in co-relation 983. Up to 136 conditions per place. [2024-01-27 15:57:35,716 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 36 selfloop transitions, 14 changer transitions 0/51 dead transitions. [2024-01-27 15:57:35,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 470 flow [2024-01-27 15:57:35,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:57:35,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:57:35,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 52 transitions. [2024-01-27 15:57:35,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49523809523809526 [2024-01-27 15:57:35,717 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 319 flow. Second operand 5 states and 52 transitions. [2024-01-27 15:57:35,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 470 flow [2024-01-27 15:57:35,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 457 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-27 15:57:35,720 INFO L231 Difference]: Finished difference. Result has 52 places, 38 transitions, 342 flow [2024-01-27 15:57:35,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=342, PETRI_PLACES=52, PETRI_TRANSITIONS=38} [2024-01-27 15:57:35,720 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 30 predicate places. [2024-01-27 15:57:35,720 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 38 transitions, 342 flow [2024-01-27 15:57:35,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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 15:57:35,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:57:35,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:57:35,735 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 15:57:35,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:57:35,934 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:57:35,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:57:35,934 INFO L85 PathProgramCache]: Analyzing trace with hash -629622443, now seen corresponding path program 6 times [2024-01-27 15:57:35,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:57:35,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978530191] [2024-01-27 15:57:35,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:57:35,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:57:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:57:36,008 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 15:57:36,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:57:36,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978530191] [2024-01-27 15:57:36,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978530191] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:57:36,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:57:36,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:57:36,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758287812] [2024-01-27 15:57:36,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:57:36,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:57:36,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:57:36,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:57:36,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:57:36,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 15:57:36,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 38 transitions, 342 flow. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 15:57:36,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:57:36,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 15:57:36,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:57:36,117 INFO L124 PetriNetUnfolderBase]: 107/193 cut-off events. [2024-01-27 15:57:36,117 INFO L125 PetriNetUnfolderBase]: For 909/909 co-relation queries the response was YES. [2024-01-27 15:57:36,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1018 conditions, 193 events. 107/193 cut-off events. For 909/909 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 552 event pairs, 31 based on Foata normal form. 2/194 useless extension candidates. Maximal degree in co-relation 988. Up to 136 conditions per place. [2024-01-27 15:57:36,119 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 32 selfloop transitions, 10 changer transitions 4/47 dead transitions. [2024-01-27 15:57:36,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 487 flow [2024-01-27 15:57:36,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:57:36,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:57:36,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 44 transitions. [2024-01-27 15:57:36,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-01-27 15:57:36,120 INFO L175 Difference]: Start difference. First operand has 52 places, 38 transitions, 342 flow. Second operand 5 states and 44 transitions. [2024-01-27 15:57:36,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 487 flow [2024-01-27 15:57:36,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 47 transitions, 445 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-01-27 15:57:36,124 INFO L231 Difference]: Finished difference. Result has 55 places, 38 transitions, 341 flow [2024-01-27 15:57:36,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=341, PETRI_PLACES=55, PETRI_TRANSITIONS=38} [2024-01-27 15:57:36,125 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 33 predicate places. [2024-01-27 15:57:36,126 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 38 transitions, 341 flow [2024-01-27 15:57:36,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 15:57:36,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:57:36,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:57:36,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-27 15:57:36,126 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:57:36,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:57:36,127 INFO L85 PathProgramCache]: Analyzing trace with hash -47372764, now seen corresponding path program 1 times [2024-01-27 15:57:36,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:57:36,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614917883] [2024-01-27 15:57:36,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:57:36,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:57:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:57:36,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:57:36,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:57:36,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614917883] [2024-01-27 15:57:36,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614917883] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:57:36,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815404096] [2024-01-27 15:57:36,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:57:36,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:57:36,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:57:36,342 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 15:57:36,344 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 15:57:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:57:36,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 26 conjunts are in the unsatisfiable core [2024-01-27 15:57:36,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:57:36,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-01-27 15:57:36,612 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-27 15:57:36,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 42 treesize of output 111 [2024-01-27 15:57:36,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:57:36,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:57:38,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 194 [2024-01-27 15:57:38,639 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-27 15:57:38,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 17 new quantified variables, introduced 45 case distinctions, treesize of input 7137 treesize of output 4757 [2024-01-27 16:01:35,416 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-01-27 16:01:54,326 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-01-27 16:01:58,123 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-01-27 16:02:04,648 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-01-27 16:02:12,017 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-01-27 16:02:19,160 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-01-27 16:02:56,679 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 101 [2024-01-27 16:02:56,679 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-01-27 16:02:56,680 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-01-27 16:02:56,692 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 16:02:56,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 16:02:56,881 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:516) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:500) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 69 more [2024-01-27 16:02:56,886 INFO L158 Benchmark]: Toolchain (without parser) took 325744.24ms. Allocated memory was 140.5MB in the beginning and 3.4GB in the end (delta: 3.3GB). Free memory was 87.5MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2024-01-27 16:02:56,886 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 140.5MB. Free memory is still 106.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 16:02:56,887 INFO L158 Benchmark]: CACSL2BoogieTranslator took 327.78ms. Allocated memory is still 140.5MB. Free memory was 87.5MB in the beginning and 75.2MB in the end (delta: 12.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-01-27 16:02:56,887 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.03ms. Allocated memory is still 140.5MB. Free memory was 74.9MB in the beginning and 72.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 16:02:56,887 INFO L158 Benchmark]: Boogie Preprocessor took 43.35ms. Allocated memory is still 140.5MB. Free memory was 72.8MB in the beginning and 70.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 16:02:56,887 INFO L158 Benchmark]: RCFGBuilder took 753.57ms. Allocated memory was 140.5MB in the beginning and 174.1MB in the end (delta: 33.6MB). Free memory was 70.1MB in the beginning and 125.0MB in the end (delta: -54.8MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. [2024-01-27 16:02:56,887 INFO L158 Benchmark]: TraceAbstraction took 324581.09ms. Allocated memory was 174.1MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 125.0MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2024-01-27 16:02:56,889 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 140.5MB. Free memory is still 106.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 327.78ms. Allocated memory is still 140.5MB. Free memory was 87.5MB in the beginning and 75.2MB in the end (delta: 12.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.03ms. Allocated memory is still 140.5MB. Free memory was 74.9MB in the beginning and 72.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.35ms. Allocated memory is still 140.5MB. Free memory was 72.8MB in the beginning and 70.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 753.57ms. Allocated memory was 140.5MB in the beginning and 174.1MB in the end (delta: 33.6MB). Free memory was 70.1MB in the beginning and 125.0MB in the end (delta: -54.8MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. * TraceAbstraction took 324581.09ms. Allocated memory was 174.1MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 125.0MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/unroll-5.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 624ca078114fa3c35bb1960efece3c50cba0d03b97522c4936fd5f6e5d783f29 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 16:02:58,996 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 16:02:59,078 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-01-27 16:02:59,083 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 16:02:59,084 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 16:02:59,117 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 16:02:59,118 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 16:02:59,118 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 16:02:59,119 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 16:02:59,122 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 16:02:59,123 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 16:02:59,123 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 16:02:59,123 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 16:02:59,125 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 16:02:59,125 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 16:02:59,125 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 16:02:59,126 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 16:02:59,126 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 16:02:59,126 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 16:02:59,126 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 16:02:59,126 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 16:02:59,127 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 16:02:59,127 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 16:02:59,128 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-01-27 16:02:59,128 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-01-27 16:02:59,128 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 16:02:59,128 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-01-27 16:02:59,128 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 16:02:59,129 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 16:02:59,129 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 16:02:59,130 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 16:02:59,130 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 16:02:59,130 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 16:02:59,130 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 16:02:59,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:02:59,131 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 16:02:59,132 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 16:02:59,132 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 16:02:59,132 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-01-27 16:02:59,132 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-01-27 16:02:59,132 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 16:02:59,133 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 16:02:59,133 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 16:02:59,133 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 16:02:59,133 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 16:02:59,133 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-01-27 16:02:59,133 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 624ca078114fa3c35bb1960efece3c50cba0d03b97522c4936fd5f6e5d783f29 [2024-01-27 16:02:59,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 16:02:59,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 16:02:59,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 16:02:59,405 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 16:02:59,406 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 16:02:59,407 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-5.wvr.c [2024-01-27 16:03:00,500 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 16:03:00,683 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 16:03:00,684 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-5.wvr.c [2024-01-27 16:03:00,693 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7bdec92b/ec1e77fb8bb74ceab01e7b6c9e9631ab/FLAG6516ae0b5 [2024-01-27 16:03:00,711 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7bdec92b/ec1e77fb8bb74ceab01e7b6c9e9631ab [2024-01-27 16:03:00,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 16:03:00,714 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 16:03:00,716 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 16:03:00,716 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 16:03:00,719 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 16:03:00,719 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:03:00" (1/1) ... [2024-01-27 16:03:00,720 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d62ebf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:03:00, skipping insertion in model container [2024-01-27 16:03:00,720 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:03:00" (1/1) ... [2024-01-27 16:03:00,742 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 16:03:00,912 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/unroll-5.wvr.c[2670,2683] [2024-01-27 16:03:00,926 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:03:00,940 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-01-27 16:03:00,947 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 16:03:00,970 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/unroll-5.wvr.c[2670,2683] [2024-01-27 16:03:00,977 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:03:00,982 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 16:03:01,009 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/unroll-5.wvr.c[2670,2683] [2024-01-27 16:03:01,014 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:03:01,038 INFO L206 MainTranslator]: Completed translation [2024-01-27 16:03:01,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:03:01 WrapperNode [2024-01-27 16:03:01,038 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 16:03:01,041 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 16:03:01,041 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 16:03:01,041 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 16:03:01,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:03:01" (1/1) ... [2024-01-27 16:03:01,065 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:03:01" (1/1) ... [2024-01-27 16:03:01,096 INFO L138 Inliner]: procedures = 26, calls = 38, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 167 [2024-01-27 16:03:01,096 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 16:03:01,097 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 16:03:01,097 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 16:03:01,098 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 16:03:01,107 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:03:01" (1/1) ... [2024-01-27 16:03:01,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:03:01" (1/1) ... [2024-01-27 16:03:01,122 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:03:01" (1/1) ... [2024-01-27 16:03:01,149 INFO L175 MemorySlicer]: Split 13 memory accesses to 4 slices as follows [2, 2, 7, 2]. 54 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-01-27 16:03:01,149 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:03:01" (1/1) ... [2024-01-27 16:03:01,150 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:03:01" (1/1) ... [2024-01-27 16:03:01,156 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:03:01" (1/1) ... [2024-01-27 16:03:01,159 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:03:01" (1/1) ... [2024-01-27 16:03:01,160 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:03:01" (1/1) ... [2024-01-27 16:03:01,162 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:03:01" (1/1) ... [2024-01-27 16:03:01,164 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 16:03:01,165 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 16:03:01,165 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 16:03:01,165 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 16:03:01,166 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:03:01" (1/1) ... [2024-01-27 16:03:01,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:03:01,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:03:01,200 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-27 16:03:01,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-27 16:03:01,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 16:03:01,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-01-27 16:03:01,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-01-27 16:03:01,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-01-27 16:03:01,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-01-27 16:03:01,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 16:03:01,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-01-27 16:03:01,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-01-27 16:03:01,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-01-27 16:03:01,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-01-27 16:03:01,251 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 16:03:01,251 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 16:03:01,251 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 16:03:01,251 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 16:03:01,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-27 16:03:01,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 16:03:01,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 16:03:01,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 16:03:01,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-01-27 16:03:01,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-01-27 16:03:01,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-01-27 16:03:01,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-01-27 16:03:01,253 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 16:03:01,340 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 16:03:01,341 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 16:03:01,559 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 16:03:01,560 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 16:03:01,826 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 16:03:01,826 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-01-27 16:03:01,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:03:01 BoogieIcfgContainer [2024-01-27 16:03:01,827 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 16:03:01,828 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 16:03:01,828 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 16:03:01,831 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 16:03:01,832 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 04:03:00" (1/3) ... [2024-01-27 16:03:01,832 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bed2059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:03:01, skipping insertion in model container [2024-01-27 16:03:01,832 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:03:01" (2/3) ... [2024-01-27 16:03:01,833 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bed2059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:03:01, skipping insertion in model container [2024-01-27 16:03:01,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:03:01" (3/3) ... [2024-01-27 16:03:01,834 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-5.wvr.c [2024-01-27 16:03:01,840 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 16:03:01,846 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 16:03:01,846 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 16:03:01,846 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 16:03:01,876 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-27 16:03:01,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 21 transitions, 56 flow [2024-01-27 16:03:01,922 INFO L124 PetriNetUnfolderBase]: 3/19 cut-off events. [2024-01-27 16:03:01,922 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 16:03:01,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 19 events. 3/19 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-01-27 16:03:01,924 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 21 transitions, 56 flow [2024-01-27 16:03:01,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 18 transitions, 48 flow [2024-01-27 16:03:01,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 16:03:01,946 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;@679828f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 16:03:01,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-01-27 16:03:01,954 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 16:03:01,955 INFO L124 PetriNetUnfolderBase]: 3/17 cut-off events. [2024-01-27 16:03:01,955 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 16:03:01,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:03:01,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:03:01,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:03:01,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:03:01,960 INFO L85 PathProgramCache]: Analyzing trace with hash -175662099, now seen corresponding path program 1 times [2024-01-27 16:03:01,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 16:03:01,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101130194] [2024-01-27 16:03:01,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:03:01,969 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:03:01,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 16:03:01,973 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 16:03:02,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-01-27 16:03:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:03:02,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-27 16:03:02,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:03:02,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:03:02,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 16:03:02,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 16:03:02,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101130194] [2024-01-27 16:03:02,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101130194] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:03:02,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:03:02,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 16:03:02,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776993586] [2024-01-27 16:03:02,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:03:02,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 16:03:02,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 16:03:02,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 16:03:02,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 16:03:02,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 16:03:02,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 18 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:03:02,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:03:02,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 16:03:02,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:03:02,406 INFO L124 PetriNetUnfolderBase]: 75/137 cut-off events. [2024-01-27 16:03:02,406 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-01-27 16:03:02,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 137 events. 75/137 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 353 event pairs, 24 based on Foata normal form. 1/105 useless extension candidates. Maximal degree in co-relation 220. Up to 79 conditions per place. [2024-01-27 16:03:02,410 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 25 selfloop transitions, 3 changer transitions 1/30 dead transitions. [2024-01-27 16:03:02,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 30 transitions, 139 flow [2024-01-27 16:03:02,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 16:03:02,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 16:03:02,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 39 transitions. [2024-01-27 16:03:02,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-01-27 16:03:02,421 INFO L175 Difference]: Start difference. First operand has 22 places, 18 transitions, 48 flow. Second operand 3 states and 39 transitions. [2024-01-27 16:03:02,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 30 transitions, 139 flow [2024-01-27 16:03:02,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 30 transitions, 125 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 16:03:02,425 INFO L231 Difference]: Finished difference. Result has 21 places, 20 transitions, 59 flow [2024-01-27 16:03:02,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=21, PETRI_TRANSITIONS=20} [2024-01-27 16:03:02,430 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -1 predicate places. [2024-01-27 16:03:02,430 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 20 transitions, 59 flow [2024-01-27 16:03:02,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:03:02,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:03:02,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:03:02,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-01-27 16:03:02,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:03:02,635 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:03:02,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:03:02,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1558758146, now seen corresponding path program 1 times [2024-01-27 16:03:02,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 16:03:02,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101733206] [2024-01-27 16:03:02,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:03:02,636 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:03:02,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 16:03:02,637 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 16:03:02,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-01-27 16:03:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:03:02,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-27 16:03:02,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:03:02,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 16:03:02,779 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 16:03:02,779 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 16:03:02,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101733206] [2024-01-27 16:03:02,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101733206] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:03:02,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:03:02,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 16:03:02,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570755] [2024-01-27 16:03:02,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:03:02,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 16:03:02,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 16:03:02,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 16:03:02,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 16:03:02,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 16:03:02,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 20 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:03:02,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:03:02,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 16:03:02,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:03:02,877 INFO L124 PetriNetUnfolderBase]: 75/138 cut-off events. [2024-01-27 16:03:02,877 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-01-27 16:03:02,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 138 events. 75/138 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 338 event pairs, 48 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 120. Up to 137 conditions per place. [2024-01-27 16:03:02,878 INFO L140 encePairwiseOnDemand]: 18/21 looper letters, 18 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2024-01-27 16:03:02,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 21 transitions, 101 flow [2024-01-27 16:03:02,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 16:03:02,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 16:03:02,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2024-01-27 16:03:02,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-01-27 16:03:02,879 INFO L175 Difference]: Start difference. First operand has 21 places, 20 transitions, 59 flow. Second operand 3 states and 28 transitions. [2024-01-27 16:03:02,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 21 transitions, 101 flow [2024-01-27 16:03:02,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 21 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 16:03:02,880 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 68 flow [2024-01-27 16:03:02,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2024-01-27 16:03:02,881 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2024-01-27 16:03:02,881 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 68 flow [2024-01-27 16:03:02,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:03:02,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:03:02,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:03:02,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-01-27 16:03:03,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:03:03,089 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:03:03,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:03:03,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1515066979, now seen corresponding path program 1 times [2024-01-27 16:03:03,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 16:03:03,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430159147] [2024-01-27 16:03:03,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:03:03,090 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:03:03,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 16:03:03,091 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 16:03:03,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-01-27 16:03:03,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:03:03,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 16:03:03,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:03:03,239 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 16:03:03,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 16:03:03,353 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 16:03:03,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 16:03:03,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [430159147] [2024-01-27 16:03:03,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [430159147] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 16:03:03,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-01-27 16:03:03,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-01-27 16:03:03,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584635986] [2024-01-27 16:03:03,354 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-01-27 16:03:03,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-27 16:03:03,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 16:03:03,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-27 16:03:03,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-01-27 16:03:03,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 16:03:03,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 68 flow. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:03:03,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:03:03,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 16:03:03,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:03:03,724 INFO L124 PetriNetUnfolderBase]: 136/253 cut-off events. [2024-01-27 16:03:03,724 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-01-27 16:03:03,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 253 events. 136/253 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 860 event pairs, 13 based on Foata normal form. 28/280 useless extension candidates. Maximal degree in co-relation 595. Up to 86 conditions per place. [2024-01-27 16:03:03,726 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 57 selfloop transitions, 11 changer transitions 0/69 dead transitions. [2024-01-27 16:03:03,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 69 transitions, 337 flow [2024-01-27 16:03:03,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 16:03:03,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 16:03:03,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-01-27 16:03:03,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026455026455027 [2024-01-27 16:03:03,729 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 68 flow. Second operand 9 states and 95 transitions. [2024-01-27 16:03:03,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 69 transitions, 337 flow [2024-01-27 16:03:03,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 69 transitions, 333 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-27 16:03:03,731 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 152 flow [2024-01-27 16:03:03,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=152, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-01-27 16:03:03,732 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 14 predicate places. [2024-01-27 16:03:03,732 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 152 flow [2024-01-27 16:03:03,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:03:03,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:03:03,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:03:03,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-01-27 16:03:03,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:03:03,937 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:03:03,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:03:03,938 INFO L85 PathProgramCache]: Analyzing trace with hash -617829611, now seen corresponding path program 1 times [2024-01-27 16:03:03,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 16:03:03,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133626028] [2024-01-27 16:03:03,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:03:03,938 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:03:03,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 16:03:03,942 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 16:03:03,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-01-27 16:03:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:03:04,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-27 16:03:04,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:03:04,127 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 16:03:04,127 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 16:03:04,160 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 16:03:04,160 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 16:03:04,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133626028] [2024-01-27 16:03:04,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133626028] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 16:03:04,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 16:03:04,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-01-27 16:03:04,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778852179] [2024-01-27 16:03:04,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:03:04,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 16:03:04,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 16:03:04,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 16:03:04,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-01-27 16:03:04,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 16:03:04,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:03:04,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:03:04,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 16:03:04,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:03:04,333 INFO L124 PetriNetUnfolderBase]: 132/242 cut-off events. [2024-01-27 16:03:04,333 INFO L125 PetriNetUnfolderBase]: For 290/290 co-relation queries the response was YES. [2024-01-27 16:03:04,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 809 conditions, 242 events. 132/242 cut-off events. For 290/290 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 755 event pairs, 24 based on Foata normal form. 4/246 useless extension candidates. Maximal degree in co-relation 785. Up to 165 conditions per place. [2024-01-27 16:03:04,344 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 34 selfloop transitions, 6 changer transitions 1/42 dead transitions. [2024-01-27 16:03:04,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 277 flow [2024-01-27 16:03:04,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 16:03:04,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 16:03:04,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2024-01-27 16:03:04,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-01-27 16:03:04,350 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 152 flow. Second operand 4 states and 46 transitions. [2024-01-27 16:03:04,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 277 flow [2024-01-27 16:03:04,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 42 transitions, 270 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-01-27 16:03:04,353 INFO L231 Difference]: Finished difference. Result has 40 places, 31 transitions, 186 flow [2024-01-27 16:03:04,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=40, PETRI_TRANSITIONS=31} [2024-01-27 16:03:04,354 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 18 predicate places. [2024-01-27 16:03:04,354 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 186 flow [2024-01-27 16:03:04,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:03:04,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:03:04,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:03:04,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-01-27 16:03:04,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:03:04,558 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:03:04,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:03:04,559 INFO L85 PathProgramCache]: Analyzing trace with hash -932548921, now seen corresponding path program 2 times [2024-01-27 16:03:04,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 16:03:04,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314674794] [2024-01-27 16:03:04,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 16:03:04,559 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:03:04,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 16:03:04,560 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 16:03:04,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-01-27 16:03:04,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 16:03:04,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 16:03:04,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 16:03:04,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:03:04,761 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 16:03:04,762 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 16:03:04,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 16:03:04,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314674794] [2024-01-27 16:03:04,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314674794] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:03:04,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:03:04,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 16:03:04,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647622477] [2024-01-27 16:03:04,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:03:04,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:03:04,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 16:03:04,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:03:04,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:03:04,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 16:03:04,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:03:04,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:03:04,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 16:03:04,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:03:04,951 INFO L124 PetriNetUnfolderBase]: 124/232 cut-off events. [2024-01-27 16:03:04,951 INFO L125 PetriNetUnfolderBase]: For 420/420 co-relation queries the response was YES. [2024-01-27 16:03:04,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 803 conditions, 232 events. 124/232 cut-off events. For 420/420 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 761 event pairs, 53 based on Foata normal form. 8/240 useless extension candidates. Maximal degree in co-relation 777. Up to 148 conditions per place. [2024-01-27 16:03:04,955 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 28 selfloop transitions, 7 changer transitions 14/50 dead transitions. [2024-01-27 16:03:04,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 50 transitions, 332 flow [2024-01-27 16:03:04,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 16:03:04,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 16:03:04,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 58 transitions. [2024-01-27 16:03:04,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-01-27 16:03:04,957 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 186 flow. Second operand 6 states and 58 transitions. [2024-01-27 16:03:04,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 50 transitions, 332 flow [2024-01-27 16:03:04,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 50 transitions, 323 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-01-27 16:03:04,964 INFO L231 Difference]: Finished difference. Result has 46 places, 30 transitions, 183 flow [2024-01-27 16:03:04,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=183, PETRI_PLACES=46, PETRI_TRANSITIONS=30} [2024-01-27 16:03:04,967 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 24 predicate places. [2024-01-27 16:03:04,967 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 30 transitions, 183 flow [2024-01-27 16:03:04,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:03:04,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:03:04,967 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:03:04,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-01-27 16:03:05,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:03:05,175 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:03:05,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:03:05,176 INFO L85 PathProgramCache]: Analyzing trace with hash 999840336, now seen corresponding path program 2 times [2024-01-27 16:03:05,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 16:03:05,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969360565] [2024-01-27 16:03:05,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 16:03:05,177 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:03:05,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 16:03:05,178 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 16:03:05,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-01-27 16:03:05,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 16:03:05,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 16:03:05,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-27 16:03:05,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:03:05,378 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 16:03:05,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 16:03:05,541 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 16:03:05,541 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 16:03:05,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969360565] [2024-01-27 16:03:05,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969360565] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 16:03:05,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-01-27 16:03:05,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2024-01-27 16:03:05,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200271631] [2024-01-27 16:03:05,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-01-27 16:03:05,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-01-27 16:03:05,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 16:03:05,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-01-27 16:03:05,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-01-27 16:03:05,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 16:03:05,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 30 transitions, 183 flow. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:03:05,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:03:05,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 16:03:05,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:03:06,910 INFO L124 PetriNetUnfolderBase]: 188/333 cut-off events. [2024-01-27 16:03:06,910 INFO L125 PetriNetUnfolderBase]: For 482/482 co-relation queries the response was YES. [2024-01-27 16:03:06,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1162 conditions, 333 events. 188/333 cut-off events. For 482/482 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1093 event pairs, 7 based on Foata normal form. 24/357 useless extension candidates. Maximal degree in co-relation 1133. Up to 149 conditions per place. [2024-01-27 16:03:06,912 INFO L140 encePairwiseOnDemand]: 13/21 looper letters, 64 selfloop transitions, 60 changer transitions 0/125 dead transitions. [2024-01-27 16:03:06,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 125 transitions, 809 flow [2024-01-27 16:03:06,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-01-27 16:03:06,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-01-27 16:03:06,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 181 transitions. [2024-01-27 16:03:06,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430952380952381 [2024-01-27 16:03:06,915 INFO L175 Difference]: Start difference. First operand has 46 places, 30 transitions, 183 flow. Second operand 20 states and 181 transitions. [2024-01-27 16:03:06,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 125 transitions, 809 flow [2024-01-27 16:03:06,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 125 transitions, 727 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-01-27 16:03:06,918 INFO L231 Difference]: Finished difference. Result has 62 places, 84 transitions, 600 flow [2024-01-27 16:03:06,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=600, PETRI_PLACES=62, PETRI_TRANSITIONS=84} [2024-01-27 16:03:06,918 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 40 predicate places. [2024-01-27 16:03:06,918 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 84 transitions, 600 flow [2024-01-27 16:03:06,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:03:06,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:03:06,919 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:03:06,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-01-27 16:03:07,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:03:07,121 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:03:07,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:03:07,121 INFO L85 PathProgramCache]: Analyzing trace with hash 468223407, now seen corresponding path program 3 times [2024-01-27 16:03:07,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 16:03:07,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071662218] [2024-01-27 16:03:07,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-27 16:03:07,122 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:03:07,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 16:03:07,124 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 16:03:07,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-01-27 16:03:07,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-01-27 16:03:07,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 16:03:07,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 16:03:07,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:03:07,267 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-27 16:03:07,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 16:03:07,299 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-27 16:03:07,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 16:03:07,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071662218] [2024-01-27 16:03:07,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071662218] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 16:03:07,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 16:03:07,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-01-27 16:03:07,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301620091] [2024-01-27 16:03:07,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:03:07,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 16:03:07,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 16:03:07,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 16:03:07,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-01-27 16:03:07,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 16:03:07,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 84 transitions, 600 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:03:07,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:03:07,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 16:03:07,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:03:07,462 INFO L124 PetriNetUnfolderBase]: 171/304 cut-off events. [2024-01-27 16:03:07,463 INFO L125 PetriNetUnfolderBase]: For 1519/1519 co-relation queries the response was YES. [2024-01-27 16:03:07,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1423 conditions, 304 events. 171/304 cut-off events. For 1519/1519 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 930 event pairs, 13 based on Foata normal form. 22/326 useless extension candidates. Maximal degree in co-relation 1392. Up to 211 conditions per place. [2024-01-27 16:03:07,465 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 60 selfloop transitions, 22 changer transitions 0/83 dead transitions. [2024-01-27 16:03:07,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 83 transitions, 748 flow [2024-01-27 16:03:07,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 16:03:07,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 16:03:07,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2024-01-27 16:03:07,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-01-27 16:03:07,466 INFO L175 Difference]: Start difference. First operand has 62 places, 84 transitions, 600 flow. Second operand 4 states and 44 transitions. [2024-01-27 16:03:07,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 83 transitions, 748 flow [2024-01-27 16:03:07,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 83 transitions, 550 flow, removed 74 selfloop flow, removed 8 redundant places. [2024-01-27 16:03:07,470 INFO L231 Difference]: Finished difference. Result has 59 places, 73 transitions, 435 flow [2024-01-27 16:03:07,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=435, PETRI_PLACES=59, PETRI_TRANSITIONS=73} [2024-01-27 16:03:07,471 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 37 predicate places. [2024-01-27 16:03:07,471 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 73 transitions, 435 flow [2024-01-27 16:03:07,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:03:07,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:03:07,471 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:03:07,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-01-27 16:03:07,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:03:07,675 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:03:07,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:03:07,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1725728877, now seen corresponding path program 4 times [2024-01-27 16:03:07,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 16:03:07,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [666143397] [2024-01-27 16:03:07,676 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-27 16:03:07,676 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:03:07,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 16:03:07,677 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 16:03:07,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-01-27 16:03:07,763 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-27 16:03:07,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 16:03:07,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-27 16:03:07,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:03:07,837 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-27 16:03:07,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 16:03:07,934 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-27 16:03:07,934 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 16:03:07,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [666143397] [2024-01-27 16:03:07,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [666143397] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 16:03:07,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-01-27 16:03:07,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2024-01-27 16:03:07,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257572275] [2024-01-27 16:03:07,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-01-27 16:03:07,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-01-27 16:03:07,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 16:03:07,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-01-27 16:03:07,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-01-27 16:03:07,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 16:03:07,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 73 transitions, 435 flow. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:03:07,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:03:07,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 16:03:07,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:03:08,769 INFO L124 PetriNetUnfolderBase]: 220/402 cut-off events. [2024-01-27 16:03:08,769 INFO L125 PetriNetUnfolderBase]: For 2259/2259 co-relation queries the response was YES. [2024-01-27 16:03:08,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1684 conditions, 402 events. 220/402 cut-off events. For 2259/2259 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1420 event pairs, 39 based on Foata normal form. 8/409 useless extension candidates. Maximal degree in co-relation 1653. Up to 150 conditions per place. [2024-01-27 16:03:08,772 INFO L140 encePairwiseOnDemand]: 14/21 looper letters, 62 selfloop transitions, 53 changer transitions 6/122 dead transitions. [2024-01-27 16:03:08,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 122 transitions, 938 flow [2024-01-27 16:03:08,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-27 16:03:08,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-27 16:03:08,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 97 transitions. [2024-01-27 16:03:08,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38492063492063494 [2024-01-27 16:03:08,773 INFO L175 Difference]: Start difference. First operand has 59 places, 73 transitions, 435 flow. Second operand 12 states and 97 transitions. [2024-01-27 16:03:08,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 122 transitions, 938 flow [2024-01-27 16:03:08,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 122 transitions, 819 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-01-27 16:03:08,779 INFO L231 Difference]: Finished difference. Result has 68 places, 92 transitions, 706 flow [2024-01-27 16:03:08,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=706, PETRI_PLACES=68, PETRI_TRANSITIONS=92} [2024-01-27 16:03:08,780 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 46 predicate places. [2024-01-27 16:03:08,780 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 92 transitions, 706 flow [2024-01-27 16:03:08,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:03:08,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:03:08,780 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:03:08,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-01-27 16:03:08,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:03:08,986 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:03:08,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:03:08,986 INFO L85 PathProgramCache]: Analyzing trace with hash 275691861, now seen corresponding path program 5 times [2024-01-27 16:03:08,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 16:03:08,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108786978] [2024-01-27 16:03:08,987 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-27 16:03:08,988 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:03:08,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 16:03:08,990 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 16:03:08,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-01-27 16:03:09,118 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-01-27 16:03:09,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 16:03:09,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 17 conjunts are in the unsatisfiable core [2024-01-27 16:03:09,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:03:09,579 INFO L349 Elim1Store]: treesize reduction 568, result has 4.2 percent of original size [2024-01-27 16:03:09,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 20 new quantified variables, introduced 66 case distinctions, treesize of input 838 treesize of output 152 [2024-01-27 16:03:09,662 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-27 16:03:09,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 16:03:10,632 INFO L349 Elim1Store]: treesize reduction 498, result has 21.3 percent of original size [2024-01-27 16:03:10,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 20 new quantified variables, introduced 66 case distinctions, treesize of input 955 treesize of output 282 [2024-01-27 16:03:23,895 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-27 16:03:23,896 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 16:03:23,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108786978] [2024-01-27 16:03:23,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108786978] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 16:03:23,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-01-27 16:03:23,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2024-01-27 16:03:23,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465921243] [2024-01-27 16:03:23,897 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-01-27 16:03:23,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-01-27 16:03:23,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 16:03:23,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-01-27 16:03:23,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-01-27 16:03:23,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 16:03:23,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 92 transitions, 706 flow. Second operand has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:03:23,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:03:23,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 16:03:23,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:03:26,015 INFO L124 PetriNetUnfolderBase]: 435/776 cut-off events. [2024-01-27 16:03:26,016 INFO L125 PetriNetUnfolderBase]: For 2313/2313 co-relation queries the response was YES. [2024-01-27 16:03:26,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3554 conditions, 776 events. 435/776 cut-off events. For 2313/2313 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3269 event pairs, 32 based on Foata normal form. 3/779 useless extension candidates. Maximal degree in co-relation 3269. Up to 353 conditions per place. [2024-01-27 16:03:26,039 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 88 selfloop transitions, 8 changer transitions 98/195 dead transitions. [2024-01-27 16:03:26,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 195 transitions, 1871 flow [2024-01-27 16:03:26,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 16:03:26,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 16:03:26,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-01-27 16:03:26,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-01-27 16:03:26,046 INFO L175 Difference]: Start difference. First operand has 68 places, 92 transitions, 706 flow. Second operand 8 states and 81 transitions. [2024-01-27 16:03:26,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 195 transitions, 1871 flow [2024-01-27 16:03:26,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 195 transitions, 1805 flow, removed 32 selfloop flow, removed 1 redundant places. [2024-01-27 16:03:26,055 INFO L231 Difference]: Finished difference. Result has 76 places, 93 transitions, 711 flow [2024-01-27 16:03:26,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=711, PETRI_PLACES=76, PETRI_TRANSITIONS=93} [2024-01-27 16:03:26,056 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 54 predicate places. [2024-01-27 16:03:26,056 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 93 transitions, 711 flow [2024-01-27 16:03:26,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:03:26,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:03:26,056 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:03:26,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-01-27 16:03:26,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:03:26,260 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:03:26,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:03:26,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1387949840, now seen corresponding path program 6 times [2024-01-27 16:03:26,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 16:03:26,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509029850] [2024-01-27 16:03:26,261 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-27 16:03:26,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:03:26,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 16:03:26,262 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 16:03:26,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-01-27 16:03:26,377 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-01-27 16:03:26,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 16:03:26,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2024-01-27 16:03:26,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:03:26,434 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-27 16:03:26,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 16:03:26,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 16:03:26,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509029850] [2024-01-27 16:03:26,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509029850] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:03:26,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:03:26,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:03:26,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403632176] [2024-01-27 16:03:26,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:03:26,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:03:26,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 16:03:26,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:03:26,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:03:26,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 16:03:26,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 93 transitions, 711 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:03:26,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:03:26,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 16:03:26,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:03:26,643 INFO L124 PetriNetUnfolderBase]: 226/413 cut-off events. [2024-01-27 16:03:26,644 INFO L125 PetriNetUnfolderBase]: For 1450/1450 co-relation queries the response was YES. [2024-01-27 16:03:26,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1833 conditions, 413 events. 226/413 cut-off events. For 1450/1450 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1442 event pairs, 60 based on Foata normal form. 28/440 useless extension candidates. Maximal degree in co-relation 1801. Up to 255 conditions per place. [2024-01-27 16:03:26,646 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 61 selfloop transitions, 46 changer transitions 0/108 dead transitions. [2024-01-27 16:03:26,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 108 transitions, 1000 flow [2024-01-27 16:03:26,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 16:03:26,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 16:03:26,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 49 transitions. [2024-01-27 16:03:26,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-01-27 16:03:26,648 INFO L175 Difference]: Start difference. First operand has 76 places, 93 transitions, 711 flow. Second operand 5 states and 49 transitions. [2024-01-27 16:03:26,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 108 transitions, 1000 flow [2024-01-27 16:03:26,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 108 transitions, 914 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-01-27 16:03:26,656 INFO L231 Difference]: Finished difference. Result has 68 places, 93 transitions, 811 flow [2024-01-27 16:03:26,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=811, PETRI_PLACES=68, PETRI_TRANSITIONS=93} [2024-01-27 16:03:26,657 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 46 predicate places. [2024-01-27 16:03:26,657 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 93 transitions, 811 flow [2024-01-27 16:03:26,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:03:26,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:03:26,658 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:03:26,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-01-27 16:03:26,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:03:26,861 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:03:26,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:03:26,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1914770632, now seen corresponding path program 7 times [2024-01-27 16:03:26,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 16:03:26,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532033631] [2024-01-27 16:03:26,862 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-01-27 16:03:26,862 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:03:26,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 16:03:26,863 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 16:03:26,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-01-27 16:03:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:03:26,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-27 16:03:26,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:03:27,023 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 16:03:27,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 16:03:27,143 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 16:03:27,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 16:03:27,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532033631] [2024-01-27 16:03:27,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532033631] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 16:03:27,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-01-27 16:03:27,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2024-01-27 16:03:27,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330422722] [2024-01-27 16:03:27,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-01-27 16:03:27,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-01-27 16:03:27,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 16:03:27,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-01-27 16:03:27,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-01-27 16:03:27,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-01-27 16:03:27,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 93 transitions, 811 flow. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:03:27,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:03:27,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-01-27 16:03:27,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:03:27,715 INFO L124 PetriNetUnfolderBase]: 217/389 cut-off events. [2024-01-27 16:03:27,716 INFO L125 PetriNetUnfolderBase]: For 1496/1496 co-relation queries the response was YES. [2024-01-27 16:03:27,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1784 conditions, 389 events. 217/389 cut-off events. For 1496/1496 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1308 event pairs, 50 based on Foata normal form. 4/393 useless extension candidates. Maximal degree in co-relation 1748. Up to 191 conditions per place. [2024-01-27 16:03:27,718 INFO L140 encePairwiseOnDemand]: 14/21 looper letters, 59 selfloop transitions, 44 changer transitions 5/109 dead transitions. [2024-01-27 16:03:27,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 109 transitions, 1090 flow [2024-01-27 16:03:27,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 16:03:27,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 16:03:27,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 62 transitions. [2024-01-27 16:03:27,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-01-27 16:03:27,720 INFO L175 Difference]: Start difference. First operand has 68 places, 93 transitions, 811 flow. Second operand 8 states and 62 transitions. [2024-01-27 16:03:27,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 109 transitions, 1090 flow [2024-01-27 16:03:27,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 109 transitions, 1038 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-01-27 16:03:27,725 INFO L231 Difference]: Finished difference. Result has 76 places, 92 transitions, 880 flow [2024-01-27 16:03:27,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=880, PETRI_PLACES=76, PETRI_TRANSITIONS=92} [2024-01-27 16:03:27,726 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 54 predicate places. [2024-01-27 16:03:27,726 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 92 transitions, 880 flow [2024-01-27 16:03:27,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:03:27,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:03:27,727 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:03:27,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2024-01-27 16:03:27,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:03:27,927 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:03:27,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:03:27,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1877854365, now seen corresponding path program 1 times [2024-01-27 16:03:27,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 16:03:27,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1701834627] [2024-01-27 16:03:27,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:03:27,928 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 16:03:27,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 16:03:27,929 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 16:03:27,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-01-27 16:03:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:03:28,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-27 16:03:28,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:03:33,443 INFO L349 Elim1Store]: treesize reduction 1224, result has 22.0 percent of original size [2024-01-27 16:03:33,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 36 new quantified variables, introduced 190 case distinctions, treesize of input 21313 treesize of output 583 Killed by 15