./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 273a578a 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/goblint-regression/36-apron_21-traces-cluster-based_true.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-273a578-m [2024-02-19 14:19:06,167 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 14:19:06,227 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-19 14:19:06,240 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 14:19:06,241 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 14:19:06,275 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 14:19:06,278 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 14:19:06,278 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 14:19:06,279 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 14:19:06,280 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 14:19:06,280 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 14:19:06,281 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 14:19:06,281 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 14:19:06,284 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 14:19:06,284 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 14:19:06,284 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 14:19:06,285 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 14:19:06,285 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 14:19:06,285 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-19 14:19:06,285 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 14:19:06,285 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 14:19:06,286 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 14:19:06,286 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 14:19:06,286 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 14:19:06,287 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 14:19:06,287 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 14:19:06,287 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 14:19:06,287 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 14:19:06,288 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 14:19:06,288 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 14:19:06,289 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 14:19:06,289 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 14:19:06,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:19:06,289 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 14:19:06,290 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 14:19:06,290 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 14:19:06,291 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-19 14:19:06,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-19 14:19:06,291 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 14:19:06,291 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 14:19:06,291 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 14:19:06,292 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 14:19:06,292 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 14:19:06,292 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 14:19:06,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 14:19:06,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 14:19:06,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 14:19:06,591 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 14:19:06,591 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 14:19:06,592 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-02-19 14:19:07,609 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 14:19:07,812 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 14:19:07,812 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-02-19 14:19:07,831 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54e63d832/736299b665574ff5b161f200c82ce542/FLAG14f44edf8 [2024-02-19 14:19:07,845 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54e63d832/736299b665574ff5b161f200c82ce542 [2024-02-19 14:19:07,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 14:19:07,850 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 14:19:07,852 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 14:19:07,852 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 14:19:07,855 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 14:19:07,857 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:19:07" (1/1) ... [2024-02-19 14:19:07,858 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32bdc717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:07, skipping insertion in model container [2024-02-19 14:19:07,858 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:19:07" (1/1) ... [2024-02-19 14:19:07,899 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 14:19:08,048 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2024-02-19 14:19:08,189 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:19:08,201 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 14:19:08,212 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2024-02-19 14:19:08,240 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:19:08,275 INFO L206 MainTranslator]: Completed translation [2024-02-19 14:19:08,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:08 WrapperNode [2024-02-19 14:19:08,276 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 14:19:08,277 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 14:19:08,279 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 14:19:08,279 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 14:19:08,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:08" (1/1) ... [2024-02-19 14:19:08,294 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:08" (1/1) ... [2024-02-19 14:19:08,325 INFO L138 Inliner]: procedures = 166, calls = 53, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 149 [2024-02-19 14:19:08,328 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 14:19:08,329 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 14:19:08,329 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 14:19:08,329 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 14:19:08,336 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:08" (1/1) ... [2024-02-19 14:19:08,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:08" (1/1) ... [2024-02-19 14:19:08,352 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:08" (1/1) ... [2024-02-19 14:19:08,363 INFO L175 MemorySlicer]: Split 15 memory accesses to 6 slices as follows [2, 1, 5, 5, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 5, 0, 0]. The 3 writes are split as follows [0, 1, 0, 0, 1, 1]. [2024-02-19 14:19:08,372 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:08" (1/1) ... [2024-02-19 14:19:08,372 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:08" (1/1) ... [2024-02-19 14:19:08,376 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:08" (1/1) ... [2024-02-19 14:19:08,388 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:08" (1/1) ... [2024-02-19 14:19:08,389 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:08" (1/1) ... [2024-02-19 14:19:08,398 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:08" (1/1) ... [2024-02-19 14:19:08,400 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 14:19:08,405 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 14:19:08,405 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 14:19:08,405 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 14:19:08,406 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:08" (1/1) ... [2024-02-19 14:19:08,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:19:08,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:19:08,434 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) [2024-02-19 14:19:08,448 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 [2024-02-19 14:19:08,467 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-02-19 14:19:08,468 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-02-19 14:19:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-19 14:19:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-19 14:19:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-19 14:19:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-19 14:19:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-19 14:19:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-19 14:19:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-19 14:19:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 14:19:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 14:19:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2024-02-19 14:19:08,469 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2024-02-19 14:19:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-19 14:19:08,469 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-19 14:19:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 14:19:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-19 14:19:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-19 14:19:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-19 14:19:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-19 14:19:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-19 14:19:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-19 14:19:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-19 14:19:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 14:19:08,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 14:19:08,472 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-19 14:19:08,612 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 14:19:08,613 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 14:19:08,885 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 14:19:08,885 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 14:19:09,031 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 14:19:09,031 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-19 14:19:09,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:19:09 BoogieIcfgContainer [2024-02-19 14:19:09,032 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 14:19:09,034 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 14:19:09,034 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 14:19:09,036 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 14:19:09,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 02:19:07" (1/3) ... [2024-02-19 14:19:09,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef8ee76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:19:09, skipping insertion in model container [2024-02-19 14:19:09,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:08" (2/3) ... [2024-02-19 14:19:09,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef8ee76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:19:09, skipping insertion in model container [2024-02-19 14:19:09,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:19:09" (3/3) ... [2024-02-19 14:19:09,040 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2024-02-19 14:19:09,054 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 14:19:09,054 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-02-19 14:19:09,054 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 14:19:09,091 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-19 14:19:09,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 148 flow [2024-02-19 14:19:09,158 INFO L124 PetriNetUnfolderBase]: 5/65 cut-off events. [2024-02-19 14:19:09,158 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-19 14:19:09,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 5/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 148 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-02-19 14:19:09,162 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 68 transitions, 148 flow [2024-02-19 14:19:09,164 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 65 transitions, 139 flow [2024-02-19 14:19:09,173 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:19:09,178 INFO L369 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=All, 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;@12013e80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:19:09,178 INFO L370 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-02-19 14:19:09,192 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:19:09,192 INFO L124 PetriNetUnfolderBase]: 1/32 cut-off events. [2024-02-19 14:19:09,192 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-19 14:19:09,193 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:19:09,193 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:19:09,194 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-02-19 14:19:09,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:19:09,198 INFO L85 PathProgramCache]: Analyzing trace with hash -636492636, now seen corresponding path program 1 times [2024-02-19 14:19:09,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:19:09,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039844473] [2024-02-19 14:19:09,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:09,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:19:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:19:09,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:19:09,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:19:09,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039844473] [2024-02-19 14:19:09,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039844473] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:19:09,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:19:09,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-19 14:19:09,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87220673] [2024-02-19 14:19:09,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:19:09,577 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:19:09,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:19:09,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:19:09,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-19 14:19:09,627 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 68 [2024-02-19 14:19:09,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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) [2024-02-19 14:19:09,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:19:09,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 68 [2024-02-19 14:19:09,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:19:13,025 INFO L124 PetriNetUnfolderBase]: 30713/46957 cut-off events. [2024-02-19 14:19:13,025 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-02-19 14:19:13,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90086 conditions, 46957 events. 30713/46957 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 1228. Compared 351432 event pairs, 7163 based on Foata normal form. 3860/49773 useless extension candidates. Maximal degree in co-relation 90075. Up to 11332 conditions per place. [2024-02-19 14:19:13,325 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 190 selfloop transitions, 11 changer transitions 0/220 dead transitions. [2024-02-19 14:19:13,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 220 transitions, 872 flow [2024-02-19 14:19:13,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-19 14:19:13,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-19 14:19:13,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 401 transitions. [2024-02-19 14:19:13,336 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7371323529411765 [2024-02-19 14:19:13,339 INFO L308 CegarLoopForPetriNet]: 70 programPoint places, 7 predicate places. [2024-02-19 14:19:13,339 INFO L507 AbstractCegarLoop]: Abstraction has has 77 places, 220 transitions, 872 flow [2024-02-19 14:19:13,339 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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) [2024-02-19 14:19:13,340 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:19:13,340 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:19:13,340 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-19 14:19:13,340 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-02-19 14:19:13,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:19:13,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1140138873, now seen corresponding path program 1 times [2024-02-19 14:19:13,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:19:13,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710894781] [2024-02-19 14:19:13,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:13,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:19:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:19:13,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:19:13,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:19:13,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710894781] [2024-02-19 14:19:13,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710894781] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:19:13,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:19:13,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-19 14:19:13,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519199349] [2024-02-19 14:19:13,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:19:13,431 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:19:13,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:19:13,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:19:13,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-19 14:19:13,435 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-02-19 14:19:13,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 220 transitions, 872 flow. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 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) [2024-02-19 14:19:13,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:19:13,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-02-19 14:19:13,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:19:18,651 INFO L124 PetriNetUnfolderBase]: 56549/85084 cut-off events. [2024-02-19 14:19:18,651 INFO L125 PetriNetUnfolderBase]: For 18151/18655 co-relation queries the response was YES. [2024-02-19 14:19:18,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234975 conditions, 85084 events. 56549/85084 cut-off events. For 18151/18655 co-relation queries the response was YES. Maximal size of possible extension queue 2265. Compared 660883 event pairs, 6969 based on Foata normal form. 92/82906 useless extension candidates. Maximal degree in co-relation 234961. Up to 32633 conditions per place. [2024-02-19 14:19:19,231 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 607 selfloop transitions, 69 changer transitions 12/707 dead transitions. [2024-02-19 14:19:19,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 707 transitions, 4200 flow [2024-02-19 14:19:19,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-19 14:19:19,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-19 14:19:19,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 346 transitions. [2024-02-19 14:19:19,236 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6360294117647058 [2024-02-19 14:19:19,237 INFO L308 CegarLoopForPetriNet]: 70 programPoint places, 14 predicate places. [2024-02-19 14:19:19,237 INFO L507 AbstractCegarLoop]: Abstraction has has 84 places, 707 transitions, 4200 flow [2024-02-19 14:19:19,237 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 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) [2024-02-19 14:19:19,237 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:19:19,237 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:19:19,238 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-19 14:19:19,238 INFO L432 AbstractCegarLoop]: === Iteration 3 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-02-19 14:19:19,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:19:19,238 INFO L85 PathProgramCache]: Analyzing trace with hash -334648776, now seen corresponding path program 1 times [2024-02-19 14:19:19,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:19:19,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638729150] [2024-02-19 14:19:19,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:19,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:19:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:19:19,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:19:19,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:19:19,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638729150] [2024-02-19 14:19:19,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638729150] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:19:19,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:19:19,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-19 14:19:19,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901718830] [2024-02-19 14:19:19,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:19:19,351 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:19:19,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:19:19,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:19:19,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-19 14:19:19,354 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 68 [2024-02-19 14:19:19,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 707 transitions, 4200 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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) [2024-02-19 14:19:19,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:19:19,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 68 [2024-02-19 14:19:19,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:19:29,684 INFO L124 PetriNetUnfolderBase]: 95821/145064 cut-off events. [2024-02-19 14:19:29,684 INFO L125 PetriNetUnfolderBase]: For 108503/109413 co-relation queries the response was YES. [2024-02-19 14:19:29,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510909 conditions, 145064 events. 95821/145064 cut-off events. For 108503/109413 co-relation queries the response was YES. Maximal size of possible extension queue 3937. Compared 1207804 event pairs, 14241 based on Foata normal form. 281/139782 useless extension candidates. Maximal degree in co-relation 510892. Up to 61652 conditions per place. [2024-02-19 14:19:30,565 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 1358 selfloop transitions, 96 changer transitions 317/1796 dead transitions. [2024-02-19 14:19:30,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 1796 transitions, 14268 flow [2024-02-19 14:19:30,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-19 14:19:30,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-19 14:19:30,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 363 transitions. [2024-02-19 14:19:30,567 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6672794117647058 [2024-02-19 14:19:30,568 INFO L308 CegarLoopForPetriNet]: 70 programPoint places, 21 predicate places. [2024-02-19 14:19:30,568 INFO L507 AbstractCegarLoop]: Abstraction has has 91 places, 1796 transitions, 14268 flow [2024-02-19 14:19:30,568 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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) [2024-02-19 14:19:30,568 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:19:30,568 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:19:30,568 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-19 14:19:30,569 INFO L432 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-02-19 14:19:30,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:19:30,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1552708645, now seen corresponding path program 1 times [2024-02-19 14:19:30,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:19:30,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927646354] [2024-02-19 14:19:30,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:30,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:19:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:19:30,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:19:30,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:19:30,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927646354] [2024-02-19 14:19:30,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927646354] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:19:30,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:19:30,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-19 14:19:30,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726084850] [2024-02-19 14:19:30,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:19:30,651 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:19:30,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:19:30,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:19:30,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:19:30,652 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 68 [2024-02-19 14:19:30,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 1796 transitions, 14268 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-02-19 14:19:30,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:19:30,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 68 [2024-02-19 14:19:30,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:19:43,294 INFO L124 PetriNetUnfolderBase]: 82246/127300 cut-off events. [2024-02-19 14:19:43,295 INFO L125 PetriNetUnfolderBase]: For 199686/199884 co-relation queries the response was YES. [2024-02-19 14:19:43,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545583 conditions, 127300 events. 82246/127300 cut-off events. For 199686/199884 co-relation queries the response was YES. Maximal size of possible extension queue 4176. Compared 1090979 event pairs, 8496 based on Foata normal form. 4893/126248 useless extension candidates. Maximal degree in co-relation 545563. Up to 63148 conditions per place. [2024-02-19 14:19:44,126 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 1961 selfloop transitions, 518 changer transitions 603/3111 dead transitions. [2024-02-19 14:19:44,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 3111 transitions, 30988 flow [2024-02-19 14:19:44,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:19:44,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:19:44,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2024-02-19 14:19:44,127 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7352941176470589 [2024-02-19 14:19:44,128 INFO L308 CegarLoopForPetriNet]: 70 programPoint places, 23 predicate places. [2024-02-19 14:19:44,128 INFO L507 AbstractCegarLoop]: Abstraction has has 93 places, 3111 transitions, 30988 flow [2024-02-19 14:19:44,128 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-02-19 14:19:44,128 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:19:44,128 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:19:44,128 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-19 14:19:44,129 INFO L432 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-02-19 14:19:44,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:19:44,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1512821133, now seen corresponding path program 1 times [2024-02-19 14:19:44,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:19:44,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322553319] [2024-02-19 14:19:44,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:44,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:19:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:19:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:19:44,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:19:44,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322553319] [2024-02-19 14:19:44,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322553319] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:19:44,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:19:44,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-19 14:19:44,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951712732] [2024-02-19 14:19:44,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:19:44,257 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:19:44,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:19:44,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:19:44,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-19 14:19:44,258 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 68 [2024-02-19 14:19:44,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 3111 transitions, 30988 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-02-19 14:19:44,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:19:44,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 68 [2024-02-19 14:19:44,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:19:55,004 INFO L124 PetriNetUnfolderBase]: 40268/63769 cut-off events. [2024-02-19 14:19:55,004 INFO L125 PetriNetUnfolderBase]: For 148789/148805 co-relation queries the response was YES. [2024-02-19 14:19:55,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324916 conditions, 63769 events. 40268/63769 cut-off events. For 148789/148805 co-relation queries the response was YES. Maximal size of possible extension queue 1884. Compared 511123 event pairs, 3952 based on Foata normal form. 2195/63633 useless extension candidates. Maximal degree in co-relation 324893. Up to 32220 conditions per place. [2024-02-19 14:19:55,578 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 2053 selfloop transitions, 229 changer transitions 719/3030 dead transitions. [2024-02-19 14:19:55,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 3030 transitions, 36216 flow [2024-02-19 14:19:55,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-19 14:19:55,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-19 14:19:55,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-02-19 14:19:55,579 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2024-02-19 14:19:55,580 INFO L308 CegarLoopForPetriNet]: 70 programPoint places, 26 predicate places. [2024-02-19 14:19:55,580 INFO L507 AbstractCegarLoop]: Abstraction has has 96 places, 3030 transitions, 36216 flow [2024-02-19 14:19:55,580 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-02-19 14:19:55,580 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:19:55,581 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:19:55,581 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-19 14:19:55,581 INFO L432 AbstractCegarLoop]: === Iteration 6 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-02-19 14:19:55,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:19:55,581 INFO L85 PathProgramCache]: Analyzing trace with hash 763556258, now seen corresponding path program 1 times [2024-02-19 14:19:55,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:19:55,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7477399] [2024-02-19 14:19:55,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:55,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:19:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:19:55,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:19:55,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:19:55,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7477399] [2024-02-19 14:19:55,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7477399] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:19:55,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:19:55,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-19 14:19:55,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62345775] [2024-02-19 14:19:55,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:19:55,654 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 14:19:55,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:19:55,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 14:19:55,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-02-19 14:19:55,662 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 68 [2024-02-19 14:19:55,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 3030 transitions, 36216 flow. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 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) [2024-02-19 14:19:55,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:19:55,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 68 [2024-02-19 14:19:55,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand