./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/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 ../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.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.graphml --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 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:04:34,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:04:34,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:04:34,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:04:34,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:04:34,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:04:34,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:04:34,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:04:34,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:04:34,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:04:34,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:04:34,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:04:34,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:04:34,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:04:34,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:04:34,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:04:34,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:04:34,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:04:34,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:04:34,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:04:34,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:04:34,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:04:34,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:04:34,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:04:34,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:04:34,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:04:34,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:04:34,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:04:34,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:04:34,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:04:34,317 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:04:34,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:04:34,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:04:34,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:04:34,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:04:34,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:04:34,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:04:34,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:04:34,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:04:34,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:04:34,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:04:34,327 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 03:04:34,359 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:04:34,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:04:34,362 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:04:34,362 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:04:34,363 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:04:34,363 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:04:34,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:04:34,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:04:34,365 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:04:34,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:04:34,366 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 03:04:34,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:04:34,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 03:04:34,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:04:34,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:04:34,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:04:34,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:04:34,368 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 03:04:34,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:04:34,368 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:04:34,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:04:34,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:04:34,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:04:34,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:04:34,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:04:34,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:04:34,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:04:34,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:04:34,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:04:34,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:04:34,377 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:04:34,377 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:04:34,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:04:34,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d [2021-12-28 03:04:34,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:04:34,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:04:34,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:04:34,715 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:04:34,717 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:04:34,719 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2021-12-28 03:04:34,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76d196ad7/527caf4525284ad0af4243b8d7f0ece1/FLAG399a8ec8b [2021-12-28 03:04:35,211 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:04:35,212 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2021-12-28 03:04:35,220 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76d196ad7/527caf4525284ad0af4243b8d7f0ece1/FLAG399a8ec8b [2021-12-28 03:04:35,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76d196ad7/527caf4525284ad0af4243b8d7f0ece1 [2021-12-28 03:04:35,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:04:35,245 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:04:35,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:04:35,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:04:35,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:04:35,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:04:35" (1/1) ... [2021-12-28 03:04:35,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@187c3f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:04:35, skipping insertion in model container [2021-12-28 03:04:35,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:04:35" (1/1) ... [2021-12-28 03:04:35,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:04:35,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:04:35,529 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2021-12-28 03:04:35,543 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:04:35,554 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:04:35,599 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2021-12-28 03:04:35,609 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:04:35,632 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:04:35,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:04:35 WrapperNode [2021-12-28 03:04:35,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:04:35,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:04:35,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:04:35,636 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:04:35,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:04:35" (1/1) ... [2021-12-28 03:04:35,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:04:35" (1/1) ... [2021-12-28 03:04:35,706 INFO L137 Inliner]: procedures = 25, calls = 63, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 317 [2021-12-28 03:04:35,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:04:35,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:04:35,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:04:35,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:04:35,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:04:35" (1/1) ... [2021-12-28 03:04:35,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:04:35" (1/1) ... [2021-12-28 03:04:35,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:04:35" (1/1) ... [2021-12-28 03:04:35,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:04:35" (1/1) ... [2021-12-28 03:04:35,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:04:35" (1/1) ... [2021-12-28 03:04:35,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:04:35" (1/1) ... [2021-12-28 03:04:35,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:04:35" (1/1) ... [2021-12-28 03:04:35,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:04:35,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:04:35,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:04:35,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:04:35,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:04:35" (1/1) ... [2021-12-28 03:04:35,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:04:35,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:04:35,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 03:04:35,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 03:04:35,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:04:35,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:04:35,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:04:35,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:04:35,829 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-28 03:04:35,829 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-28 03:04:35,829 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-28 03:04:35,830 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-28 03:04:35,830 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-28 03:04:35,830 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-28 03:04:35,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:04:35,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-28 03:04:35,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-28 03:04:35,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:04:35,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:04:35,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:04:35,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:04:35,832 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-28 03:04:35,943 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:04:35,949 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:04:36,323 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:04:36,516 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:04:36,527 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-28 03:04:36,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:04:36 BoogieIcfgContainer [2021-12-28 03:04:36,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:04:36,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:04:36,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:04:36,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:04:36,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:04:35" (1/3) ... [2021-12-28 03:04:36,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42fdcf56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:04:36, skipping insertion in model container [2021-12-28 03:04:36,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:04:35" (2/3) ... [2021-12-28 03:04:36,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42fdcf56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:04:36, skipping insertion in model container [2021-12-28 03:04:36,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:04:36" (3/3) ... [2021-12-28 03:04:36,537 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2021-12-28 03:04:36,546 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-28 03:04:36,547 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:04:36,547 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:04:36,547 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-28 03:04:36,598 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,599 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,599 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,599 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,599 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,600 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,600 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,600 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,601 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,601 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,601 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,601 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,601 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,601 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,602 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,603 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,603 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,603 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,603 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,603 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,605 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,606 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,606 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,606 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,606 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,606 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,607 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,607 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,607 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,607 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,607 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,609 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,609 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,609 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,609 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,610 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,610 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,610 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,611 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,611 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,611 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,611 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,611 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,612 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,612 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,612 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,612 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,612 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,613 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,613 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,613 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,613 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,613 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,614 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,614 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,614 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,614 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,615 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,615 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,615 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,615 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,615 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,616 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,616 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,616 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,616 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,617 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,617 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,617 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,617 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,617 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,618 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,618 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,618 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,618 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,618 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,618 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,619 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,619 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,619 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,620 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,620 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,620 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,620 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,620 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,621 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,621 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,621 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,621 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,621 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,622 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,622 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,622 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,622 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,623 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,623 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,623 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,624 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,624 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,624 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,624 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,624 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,625 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,625 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,625 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,625 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,626 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,626 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,627 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,627 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,627 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,628 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,628 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,628 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,628 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,628 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,629 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,629 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,629 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,629 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,633 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,634 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,634 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,634 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,634 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,635 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,635 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,636 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,636 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,636 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,636 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~short17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,636 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,637 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,637 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,637 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,638 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,638 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,638 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~short17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,638 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,640 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,640 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,641 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,641 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,641 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,641 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,641 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,642 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,642 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,642 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,645 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,645 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,645 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,646 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,646 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,646 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,646 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,646 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,646 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,647 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,647 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,647 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,647 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,647 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,647 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,649 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,649 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,649 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,649 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,649 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,654 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,654 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,655 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,655 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,655 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,655 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,656 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,656 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,656 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,656 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,656 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,657 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~short17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,657 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,657 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,657 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,657 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,657 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:04:36,662 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-12-28 03:04:36,698 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:04:36,704 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 03:04:36,704 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-28 03:04:36,717 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 264 places, 279 transitions, 582 flow [2021-12-28 03:04:36,864 INFO L129 PetriNetUnfolder]: 25/276 cut-off events. [2021-12-28 03:04:36,864 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-28 03:04:36,869 INFO L84 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 276 events. 25/276 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 0 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 236. Up to 4 conditions per place. [2021-12-28 03:04:36,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 264 places, 279 transitions, 582 flow [2021-12-28 03:04:36,882 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 265 transitions, 548 flow [2021-12-28 03:04:36,937 INFO L129 PetriNetUnfolder]: 25/264 cut-off events. [2021-12-28 03:04:36,938 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-28 03:04:36,938 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:04:36,939 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:04:36,940 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:04:36,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:04:36,948 INFO L85 PathProgramCache]: Analyzing trace with hash 457812310, now seen corresponding path program 1 times [2021-12-28 03:04:36,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:04:36,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935611156] [2021-12-28 03:04:36,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:04:36,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:04:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:04:37,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:04:37,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:04:37,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935611156] [2021-12-28 03:04:37,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935611156] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:04:37,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:04:37,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 03:04:37,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422459297] [2021-12-28 03:04:37,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:04:37,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 03:04:37,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:04:37,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 03:04:37,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 03:04:37,309 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 279 [2021-12-28 03:04:37,318 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 265 transitions, 548 flow. Second operand has 2 states, 2 states have (on average 253.5) internal successors, (507), 2 states have internal predecessors, (507), 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) [2021-12-28 03:04:37,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:04:37,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 279 [2021-12-28 03:04:37,319 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:04:37,490 INFO L129 PetriNetUnfolder]: 138/578 cut-off events. [2021-12-28 03:04:37,491 INFO L130 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2021-12-28 03:04:37,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 799 conditions, 578 events. 138/578 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2010 event pairs, 55 based on Foata normal form. 106/615 useless extension candidates. Maximal degree in co-relation 561. Up to 180 conditions per place. [2021-12-28 03:04:37,498 INFO L132 encePairwiseOnDemand]: 262/279 looper letters, 13 selfloop transitions, 0 changer transitions 8/248 dead transitions. [2021-12-28 03:04:37,499 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 248 transitions, 540 flow [2021-12-28 03:04:37,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 03:04:37,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-28 03:04:37,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 526 transitions. [2021-12-28 03:04:37,516 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.942652329749104 [2021-12-28 03:04:37,517 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 526 transitions. [2021-12-28 03:04:37,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 526 transitions. [2021-12-28 03:04:37,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:04:37,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 526 transitions. [2021-12-28 03:04:37,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 263.0) internal successors, (526), 2 states have internal predecessors, (526), 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) [2021-12-28 03:04:37,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 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) [2021-12-28 03:04:37,535 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 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) [2021-12-28 03:04:37,537 INFO L186 Difference]: Start difference. First operand has 250 places, 265 transitions, 548 flow. Second operand 2 states and 526 transitions. [2021-12-28 03:04:37,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 248 transitions, 540 flow [2021-12-28 03:04:37,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 248 transitions, 528 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-28 03:04:37,548 INFO L242 Difference]: Finished difference. Result has 245 places, 240 transitions, 486 flow [2021-12-28 03:04:37,550 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=486, PETRI_PLACES=245, PETRI_TRANSITIONS=240} [2021-12-28 03:04:37,555 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, -5 predicate places. [2021-12-28 03:04:37,555 INFO L470 AbstractCegarLoop]: Abstraction has has 245 places, 240 transitions, 486 flow [2021-12-28 03:04:37,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 253.5) internal successors, (507), 2 states have internal predecessors, (507), 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) [2021-12-28 03:04:37,556 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:04:37,556 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:04:37,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:04:37,557 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:04:37,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:04:37,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1216024931, now seen corresponding path program 1 times [2021-12-28 03:04:37,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:04:37,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376404113] [2021-12-28 03:04:37,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:04:37,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:04:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:04:37,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:04:37,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:04:37,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376404113] [2021-12-28 03:04:37,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376404113] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:04:37,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:04:37,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:04:37,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882673344] [2021-12-28 03:04:37,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:04:37,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:04:37,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:04:37,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:04:37,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:04:37,818 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 279 [2021-12-28 03:04:37,819 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 240 transitions, 486 flow. Second operand has 3 states, 3 states have (on average 247.0) internal successors, (741), 3 states have internal predecessors, (741), 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) [2021-12-28 03:04:37,819 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:04:37,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 279 [2021-12-28 03:04:37,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:04:37,955 INFO L129 PetriNetUnfolder]: 128/521 cut-off events. [2021-12-28 03:04:37,955 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-12-28 03:04:37,958 INFO L84 FinitePrefix]: Finished finitePrefix Result has 719 conditions, 521 events. 128/521 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1679 event pairs, 21 based on Foata normal form. 8/484 useless extension candidates. Maximal degree in co-relation 716. Up to 133 conditions per place. [2021-12-28 03:04:37,962 INFO L132 encePairwiseOnDemand]: 274/279 looper letters, 23 selfloop transitions, 4 changer transitions 0/247 dead transitions. [2021-12-28 03:04:37,963 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 247 transitions, 556 flow [2021-12-28 03:04:37,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:04:37,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-28 03:04:37,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 751 transitions. [2021-12-28 03:04:37,966 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8972520908004779 [2021-12-28 03:04:37,966 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 751 transitions. [2021-12-28 03:04:37,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 751 transitions. [2021-12-28 03:04:37,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:04:37,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 751 transitions. [2021-12-28 03:04:37,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 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) [2021-12-28 03:04:37,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 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) [2021-12-28 03:04:37,972 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 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) [2021-12-28 03:04:37,972 INFO L186 Difference]: Start difference. First operand has 245 places, 240 transitions, 486 flow. Second operand 3 states and 751 transitions. [2021-12-28 03:04:37,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 247 transitions, 556 flow [2021-12-28 03:04:37,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 247 transitions, 556 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-28 03:04:37,983 INFO L242 Difference]: Finished difference. Result has 240 places, 241 transitions, 504 flow [2021-12-28 03:04:37,984 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=504, PETRI_PLACES=240, PETRI_TRANSITIONS=241} [2021-12-28 03:04:37,985 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, -10 predicate places. [2021-12-28 03:04:37,985 INFO L470 AbstractCegarLoop]: Abstraction has has 240 places, 241 transitions, 504 flow [2021-12-28 03:04:37,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 247.0) internal successors, (741), 3 states have internal predecessors, (741), 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) [2021-12-28 03:04:37,986 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:04:37,986 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:04:37,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:04:37,987 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:04:37,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:04:37,988 INFO L85 PathProgramCache]: Analyzing trace with hash -2020456479, now seen corresponding path program 2 times [2021-12-28 03:04:37,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:04:37,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082552887] [2021-12-28 03:04:37,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:04:37,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:04:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:04:38,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:04:38,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:04:38,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082552887] [2021-12-28 03:04:38,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082552887] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:04:38,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:04:38,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:04:38,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66705345] [2021-12-28 03:04:38,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:04:38,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:04:38,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:04:38,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:04:38,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:04:38,209 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 279 [2021-12-28 03:04:38,210 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 241 transitions, 504 flow. Second operand has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 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) [2021-12-28 03:04:38,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:04:38,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 279 [2021-12-28 03:04:38,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:04:38,443 INFO L129 PetriNetUnfolder]: 233/1007 cut-off events. [2021-12-28 03:04:38,443 INFO L130 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2021-12-28 03:04:38,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1481 conditions, 1007 events. 233/1007 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5157 event pairs, 61 based on Foata normal form. 1/875 useless extension candidates. Maximal degree in co-relation 1476. Up to 202 conditions per place. [2021-12-28 03:04:38,450 INFO L132 encePairwiseOnDemand]: 274/279 looper letters, 55 selfloop transitions, 2 changer transitions 7/257 dead transitions. [2021-12-28 03:04:38,450 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 257 transitions, 676 flow [2021-12-28 03:04:38,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:04:38,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-28 03:04:38,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1093 transitions. [2021-12-28 03:04:38,453 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7835125448028674 [2021-12-28 03:04:38,453 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1093 transitions. [2021-12-28 03:04:38,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1093 transitions. [2021-12-28 03:04:38,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:04:38,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1093 transitions. [2021-12-28 03:04:38,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 218.6) internal successors, (1093), 5 states have internal predecessors, (1093), 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) [2021-12-28 03:04:38,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 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) [2021-12-28 03:04:38,460 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 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) [2021-12-28 03:04:38,460 INFO L186 Difference]: Start difference. First operand has 240 places, 241 transitions, 504 flow. Second operand 5 states and 1093 transitions. [2021-12-28 03:04:38,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 257 transitions, 676 flow [2021-12-28 03:04:38,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 257 transitions, 671 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-28 03:04:38,465 INFO L242 Difference]: Finished difference. Result has 246 places, 242 transitions, 516 flow [2021-12-28 03:04:38,466 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=516, PETRI_PLACES=246, PETRI_TRANSITIONS=242} [2021-12-28 03:04:38,466 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, -4 predicate places. [2021-12-28 03:04:38,467 INFO L470 AbstractCegarLoop]: Abstraction has has 246 places, 242 transitions, 516 flow [2021-12-28 03:04:38,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 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) [2021-12-28 03:04:38,468 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:04:38,468 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:04:38,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:04:38,468 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:04:38,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:04:38,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1201200736, now seen corresponding path program 1 times [2021-12-28 03:04:38,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:04:38,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605239220] [2021-12-28 03:04:38,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:04:38,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:04:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:04:38,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:04:38,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:04:38,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605239220] [2021-12-28 03:04:38,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605239220] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:04:38,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:04:38,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:04:38,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879766202] [2021-12-28 03:04:38,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:04:38,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:04:38,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:04:38,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:04:38,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:04:38,562 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 279 [2021-12-28 03:04:38,563 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 242 transitions, 516 flow. Second operand has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 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) [2021-12-28 03:04:38,563 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:04:38,563 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 279 [2021-12-28 03:04:38,563 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:04:38,790 INFO L129 PetriNetUnfolder]: 346/1342 cut-off events. [2021-12-28 03:04:38,790 INFO L130 PetriNetUnfolder]: For 133/133 co-relation queries the response was YES. [2021-12-28 03:04:38,795 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2074 conditions, 1342 events. 346/1342 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 7509 event pairs, 140 based on Foata normal form. 0/1177 useless extension candidates. Maximal degree in co-relation 2066. Up to 341 conditions per place. [2021-12-28 03:04:38,800 INFO L132 encePairwiseOnDemand]: 276/279 looper letters, 27 selfloop transitions, 2 changer transitions 0/250 dead transitions. [2021-12-28 03:04:38,801 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 250 transitions, 598 flow [2021-12-28 03:04:38,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:04:38,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-28 03:04:38,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 753 transitions. [2021-12-28 03:04:38,803 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.899641577060932 [2021-12-28 03:04:38,804 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 753 transitions. [2021-12-28 03:04:38,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 753 transitions. [2021-12-28 03:04:38,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:04:38,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 753 transitions. [2021-12-28 03:04:38,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 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) [2021-12-28 03:04:38,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 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) [2021-12-28 03:04:38,809 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 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) [2021-12-28 03:04:38,809 INFO L186 Difference]: Start difference. First operand has 246 places, 242 transitions, 516 flow. Second operand 3 states and 753 transitions. [2021-12-28 03:04:38,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 250 transitions, 598 flow [2021-12-28 03:04:38,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 250 transitions, 592 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-12-28 03:04:38,815 INFO L242 Difference]: Finished difference. Result has 245 places, 243 transitions, 524 flow [2021-12-28 03:04:38,815 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=524, PETRI_PLACES=245, PETRI_TRANSITIONS=243} [2021-12-28 03:04:38,816 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, -5 predicate places. [2021-12-28 03:04:38,816 INFO L470 AbstractCegarLoop]: Abstraction has has 245 places, 243 transitions, 524 flow [2021-12-28 03:04:38,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 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) [2021-12-28 03:04:38,817 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:04:38,818 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:04:38,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:04:38,818 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:04:38,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:04:38,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1562043232, now seen corresponding path program 1 times [2021-12-28 03:04:38,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:04:38,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863220939] [2021-12-28 03:04:38,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:04:38,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:04:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:04:38,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:04:38,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:04:38,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863220939] [2021-12-28 03:04:38,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863220939] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:04:38,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768375307] [2021-12-28 03:04:38,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:04:38,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:04:38,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:04:38,907 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) [2021-12-28 03:04:38,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 03:04:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:04:39,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 03:04:39,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:04:39,471 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 8 [2021-12-28 03:04:39,521 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:04:39,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:04:39,798 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:04:39,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768375307] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:04:39,799 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:04:39,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2021-12-28 03:04:39,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750967372] [2021-12-28 03:04:39,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:04:39,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:04:39,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:04:39,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:04:39,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:04:39,803 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 279 [2021-12-28 03:04:39,804 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 243 transitions, 524 flow. Second operand has 6 states, 6 states have (on average 232.83333333333334) internal successors, (1397), 6 states have internal predecessors, (1397), 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) [2021-12-28 03:04:39,804 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:04:39,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 279 [2021-12-28 03:04:39,805 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:04:40,643 INFO L129 PetriNetUnfolder]: 2082/4835 cut-off events. [2021-12-28 03:04:40,644 INFO L130 PetriNetUnfolder]: For 872/872 co-relation queries the response was YES. [2021-12-28 03:04:40,657 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9014 conditions, 4835 events. 2082/4835 cut-off events. For 872/872 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 36192 event pairs, 515 based on Foata normal form. 0/4442 useless extension candidates. Maximal degree in co-relation 9007. Up to 1465 conditions per place. [2021-12-28 03:04:40,682 INFO L132 encePairwiseOnDemand]: 272/279 looper letters, 79 selfloop transitions, 16 changer transitions 0/302 dead transitions. [2021-12-28 03:04:40,682 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 302 transitions, 876 flow [2021-12-28 03:04:40,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:04:40,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-28 03:04:40,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1678 transitions. [2021-12-28 03:04:40,686 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8591909882232462 [2021-12-28 03:04:40,686 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1678 transitions. [2021-12-28 03:04:40,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1678 transitions. [2021-12-28 03:04:40,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:04:40,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1678 transitions. [2021-12-28 03:04:40,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 239.71428571428572) internal successors, (1678), 7 states have internal predecessors, (1678), 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) [2021-12-28 03:04:40,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 279.0) internal successors, (2232), 8 states have internal predecessors, (2232), 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) [2021-12-28 03:04:40,696 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 279.0) internal successors, (2232), 8 states have internal predecessors, (2232), 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) [2021-12-28 03:04:40,696 INFO L186 Difference]: Start difference. First operand has 245 places, 243 transitions, 524 flow. Second operand 7 states and 1678 transitions. [2021-12-28 03:04:40,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 302 transitions, 876 flow [2021-12-28 03:04:40,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 302 transitions, 872 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-28 03:04:40,704 INFO L242 Difference]: Finished difference. Result has 253 places, 258 transitions, 625 flow [2021-12-28 03:04:40,704 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=625, PETRI_PLACES=253, PETRI_TRANSITIONS=258} [2021-12-28 03:04:40,706 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, 3 predicate places. [2021-12-28 03:04:40,706 INFO L470 AbstractCegarLoop]: Abstraction has has 253 places, 258 transitions, 625 flow [2021-12-28 03:04:40,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 232.83333333333334) internal successors, (1397), 6 states have internal predecessors, (1397), 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) [2021-12-28 03:04:40,707 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:04:40,708 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:04:40,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-28 03:04:40,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:04:40,923 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:04:40,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:04:40,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1771935312, now seen corresponding path program 2 times [2021-12-28 03:04:40,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:04:40,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710264342] [2021-12-28 03:04:40,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:04:40,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:04:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:04:41,139 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:04:41,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:04:41,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710264342] [2021-12-28 03:04:41,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710264342] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:04:41,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714883755] [2021-12-28 03:04:41,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:04:41,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:04:41,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:04:41,141 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) [2021-12-28 03:04:41,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 03:04:41,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-28 03:04:41,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:04:41,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-28 03:04:41,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:04:41,722 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-28 03:04:41,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:04:41,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714883755] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:04:41,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:04:41,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2021-12-28 03:04:41,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046156717] [2021-12-28 03:04:41,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:04:41,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:04:41,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:04:41,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:04:41,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:04:41,727 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 279 [2021-12-28 03:04:41,728 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 258 transitions, 625 flow. Second operand has 6 states, 6 states have (on average 216.5) internal successors, (1299), 6 states have internal predecessors, (1299), 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) [2021-12-28 03:04:41,728 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:04:41,728 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 279 [2021-12-28 03:04:41,728 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:04:42,432 INFO L129 PetriNetUnfolder]: 727/3223 cut-off events. [2021-12-28 03:04:42,433 INFO L130 PetriNetUnfolder]: For 595/600 co-relation queries the response was YES. [2021-12-28 03:04:42,455 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5701 conditions, 3223 events. 727/3223 cut-off events. For 595/600 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 27517 event pairs, 270 based on Foata normal form. 46/2930 useless extension candidates. Maximal degree in co-relation 5691. Up to 681 conditions per place. [2021-12-28 03:04:42,466 INFO L132 encePairwiseOnDemand]: 270/279 looper letters, 51 selfloop transitions, 6 changer transitions 12/274 dead transitions. [2021-12-28 03:04:42,467 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 274 transitions, 808 flow [2021-12-28 03:04:42,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:04:42,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-28 03:04:42,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1538 transitions. [2021-12-28 03:04:42,471 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7875064004096262 [2021-12-28 03:04:42,471 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1538 transitions. [2021-12-28 03:04:42,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1538 transitions. [2021-12-28 03:04:42,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:04:42,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1538 transitions. [2021-12-28 03:04:42,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 219.71428571428572) internal successors, (1538), 7 states have internal predecessors, (1538), 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) [2021-12-28 03:04:42,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 279.0) internal successors, (2232), 8 states have internal predecessors, (2232), 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) [2021-12-28 03:04:42,480 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 279.0) internal successors, (2232), 8 states have internal predecessors, (2232), 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) [2021-12-28 03:04:42,480 INFO L186 Difference]: Start difference. First operand has 253 places, 258 transitions, 625 flow. Second operand 7 states and 1538 transitions. [2021-12-28 03:04:42,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 274 transitions, 808 flow [2021-12-28 03:04:42,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 274 transitions, 808 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-28 03:04:42,490 INFO L242 Difference]: Finished difference. Result has 261 places, 259 transitions, 649 flow [2021-12-28 03:04:42,491 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=649, PETRI_PLACES=261, PETRI_TRANSITIONS=259} [2021-12-28 03:04:42,491 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, 11 predicate places. [2021-12-28 03:04:42,492 INFO L470 AbstractCegarLoop]: Abstraction has has 261 places, 259 transitions, 649 flow [2021-12-28 03:04:42,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 216.5) internal successors, (1299), 6 states have internal predecessors, (1299), 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) [2021-12-28 03:04:42,493 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:04:42,493 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:04:42,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 03:04:42,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-28 03:04:42,706 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:04:42,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:04:42,707 INFO L85 PathProgramCache]: Analyzing trace with hash 506470190, now seen corresponding path program 1 times [2021-12-28 03:04:42,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:04:42,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022054553] [2021-12-28 03:04:42,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:04:42,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:04:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:04:42,872 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:04:42,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:04:42,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022054553] [2021-12-28 03:04:42,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022054553] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:04:42,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500739537] [2021-12-28 03:04:42,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:04:42,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:04:42,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:04:42,876 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) [2021-12-28 03:04:42,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 03:04:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:04:43,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-28 03:04:43,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:04:43,513 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-28 03:04:43,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:04:43,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500739537] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:04:43,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:04:43,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2021-12-28 03:04:43,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21829854] [2021-12-28 03:04:43,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:04:43,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:04:43,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:04:43,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:04:43,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-12-28 03:04:43,518 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 279 [2021-12-28 03:04:43,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 259 transitions, 649 flow. Second operand has 6 states, 6 states have (on average 217.16666666666666) internal successors, (1303), 6 states have internal predecessors, (1303), 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) [2021-12-28 03:04:43,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:04:43,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 279 [2021-12-28 03:04:43,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:04:44,081 INFO L129 PetriNetUnfolder]: 681/3138 cut-off events. [2021-12-28 03:04:44,081 INFO L130 PetriNetUnfolder]: For 700/723 co-relation queries the response was YES. [2021-12-28 03:04:44,102 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5602 conditions, 3138 events. 681/3138 cut-off events. For 700/723 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 26362 event pairs, 250 based on Foata normal form. 41/2863 useless extension candidates. Maximal degree in co-relation 5589. Up to 700 conditions per place. [2021-12-28 03:04:44,113 INFO L132 encePairwiseOnDemand]: 269/279 looper letters, 50 selfloop transitions, 8 changer transitions 23/286 dead transitions. [2021-12-28 03:04:44,113 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 286 transitions, 891 flow [2021-12-28 03:04:44,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:04:44,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-28 03:04:44,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1967 transitions. [2021-12-28 03:04:44,118 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7833532457188371 [2021-12-28 03:04:44,118 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1967 transitions. [2021-12-28 03:04:44,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1967 transitions. [2021-12-28 03:04:44,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:04:44,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1967 transitions. [2021-12-28 03:04:44,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 218.55555555555554) internal successors, (1967), 9 states have internal predecessors, (1967), 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) [2021-12-28 03:04:44,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 279.0) internal successors, (2790), 10 states have internal predecessors, (2790), 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) [2021-12-28 03:04:44,168 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 279.0) internal successors, (2790), 10 states have internal predecessors, (2790), 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) [2021-12-28 03:04:44,169 INFO L186 Difference]: Start difference. First operand has 261 places, 259 transitions, 649 flow. Second operand 9 states and 1967 transitions. [2021-12-28 03:04:44,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 286 transitions, 891 flow [2021-12-28 03:04:44,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 286 transitions, 875 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-28 03:04:44,178 INFO L242 Difference]: Finished difference. Result has 266 places, 260 transitions, 667 flow [2021-12-28 03:04:44,178 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=667, PETRI_PLACES=266, PETRI_TRANSITIONS=260} [2021-12-28 03:04:44,179 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, 16 predicate places. [2021-12-28 03:04:44,179 INFO L470 AbstractCegarLoop]: Abstraction has has 266 places, 260 transitions, 667 flow [2021-12-28 03:04:44,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 217.16666666666666) internal successors, (1303), 6 states have internal predecessors, (1303), 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) [2021-12-28 03:04:44,180 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:04:44,180 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:04:44,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 03:04:44,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:04:44,408 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:04:44,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:04:44,408 INFO L85 PathProgramCache]: Analyzing trace with hash -241204013, now seen corresponding path program 1 times [2021-12-28 03:04:44,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:04:44,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626587220] [2021-12-28 03:04:44,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:04:44,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:04:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:04:44,559 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:04:44,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:04:44,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626587220] [2021-12-28 03:04:44,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626587220] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:04:44,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614712694] [2021-12-28 03:04:44,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:04:44,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:04:44,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:04:44,561 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) [2021-12-28 03:04:44,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 03:04:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:04:44,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-28 03:04:44,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:04:45,134 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-28 03:04:45,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:04:45,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614712694] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:04:45,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:04:45,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2021-12-28 03:04:45,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262668091] [2021-12-28 03:04:45,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:04:45,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:04:45,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:04:45,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:04:45,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-12-28 03:04:45,139 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 279 [2021-12-28 03:04:45,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 260 transitions, 667 flow. Second operand has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 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) [2021-12-28 03:04:45,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:04:45,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 279 [2021-12-28 03:04:45,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:04:45,683 INFO L129 PetriNetUnfolder]: 663/2847 cut-off events. [2021-12-28 03:04:45,684 INFO L130 PetriNetUnfolder]: For 569/573 co-relation queries the response was YES. [2021-12-28 03:04:45,696 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5040 conditions, 2847 events. 663/2847 cut-off events. For 569/573 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 22164 event pairs, 291 based on Foata normal form. 48/2640 useless extension candidates. Maximal degree in co-relation 5025. Up to 861 conditions per place. [2021-12-28 03:04:45,706 INFO L132 encePairwiseOnDemand]: 268/279 looper letters, 52 selfloop transitions, 8 changer transitions 34/298 dead transitions. [2021-12-28 03:04:45,706 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 298 transitions, 968 flow [2021-12-28 03:04:45,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:04:45,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-28 03:04:45,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1970 transitions. [2021-12-28 03:04:45,711 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7845479888490641 [2021-12-28 03:04:45,711 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1970 transitions. [2021-12-28 03:04:45,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1970 transitions. [2021-12-28 03:04:45,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:04:45,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1970 transitions. [2021-12-28 03:04:45,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 218.88888888888889) internal successors, (1970), 9 states have internal predecessors, (1970), 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) [2021-12-28 03:04:45,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 279.0) internal successors, (2790), 10 states have internal predecessors, (2790), 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) [2021-12-28 03:04:45,721 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 279.0) internal successors, (2790), 10 states have internal predecessors, (2790), 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) [2021-12-28 03:04:45,721 INFO L186 Difference]: Start difference. First operand has 266 places, 260 transitions, 667 flow. Second operand 9 states and 1970 transitions. [2021-12-28 03:04:45,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 298 transitions, 968 flow [2021-12-28 03:04:45,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 298 transitions, 940 flow, removed 1 selfloop flow, removed 6 redundant places. [2021-12-28 03:04:45,730 INFO L242 Difference]: Finished difference. Result has 268 places, 261 transitions, 679 flow [2021-12-28 03:04:45,730 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=679, PETRI_PLACES=268, PETRI_TRANSITIONS=261} [2021-12-28 03:04:45,731 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, 18 predicate places. [2021-12-28 03:04:45,731 INFO L470 AbstractCegarLoop]: Abstraction has has 268 places, 261 transitions, 679 flow [2021-12-28 03:04:45,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 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) [2021-12-28 03:04:45,732 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:04:45,732 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:04:45,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 03:04:45,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:04:45,946 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:04:45,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:04:45,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1879749238, now seen corresponding path program 1 times [2021-12-28 03:04:45,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:04:45,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33029032] [2021-12-28 03:04:45,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:04:45,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:04:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:04:46,096 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-28 03:04:46,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:04:46,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33029032] [2021-12-28 03:04:46,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33029032] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:04:46,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703801090] [2021-12-28 03:04:46,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:04:46,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:04:46,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:04:46,099 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:04:46,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 03:04:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:04:46,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-28 03:04:46,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:04:46,884 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 3 [2021-12-28 03:04:46,968 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-28 03:04:46,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:04:47,080 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 4 [2021-12-28 03:04:47,868 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-28 03:04:47,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703801090] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:04:47,868 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:04:47,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2021-12-28 03:04:47,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317128281] [2021-12-28 03:04:47,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:04:47,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-28 03:04:47,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:04:47,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-28 03:04:47,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2021-12-28 03:04:47,877 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 279 [2021-12-28 03:04:47,881 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 261 transitions, 679 flow. Second operand has 28 states, 28 states have (on average 167.35714285714286) internal successors, (4686), 28 states have internal predecessors, (4686), 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) [2021-12-28 03:04:47,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:04:47,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 279 [2021-12-28 03:04:47,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:04:52,140 INFO L129 PetriNetUnfolder]: 5206/13398 cut-off events. [2021-12-28 03:04:52,141 INFO L130 PetriNetUnfolder]: For 7759/7819 co-relation queries the response was YES. [2021-12-28 03:04:52,211 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29853 conditions, 13398 events. 5206/13398 cut-off events. For 7759/7819 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 131420 event pairs, 937 based on Foata normal form. 785/13228 useless extension candidates. Maximal degree in co-relation 29837. Up to 1566 conditions per place. [2021-12-28 03:04:52,246 INFO L132 encePairwiseOnDemand]: 234/279 looper letters, 216 selfloop transitions, 116 changer transitions 122/598 dead transitions. [2021-12-28 03:04:52,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 598 transitions, 2909 flow [2021-12-28 03:04:52,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-12-28 03:04:52,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-12-28 03:04:52,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 10488 transitions. [2021-12-28 03:04:52,277 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5966888547533709 [2021-12-28 03:04:52,277 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 10488 transitions. [2021-12-28 03:04:52,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 10488 transitions. [2021-12-28 03:04:52,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:04:52,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 10488 transitions. [2021-12-28 03:04:52,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 166.47619047619048) internal successors, (10488), 63 states have internal predecessors, (10488), 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) [2021-12-28 03:04:52,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 279.0) internal successors, (17856), 64 states have internal predecessors, (17856), 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) [2021-12-28 03:04:52,359 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 279.0) internal successors, (17856), 64 states have internal predecessors, (17856), 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) [2021-12-28 03:04:52,359 INFO L186 Difference]: Start difference. First operand has 268 places, 261 transitions, 679 flow. Second operand 63 states and 10488 transitions. [2021-12-28 03:04:52,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 598 transitions, 2909 flow [2021-12-28 03:04:52,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 598 transitions, 2891 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-12-28 03:04:52,500 INFO L242 Difference]: Finished difference. Result has 337 places, 335 transitions, 1314 flow [2021-12-28 03:04:52,501 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=1314, PETRI_PLACES=337, PETRI_TRANSITIONS=335} [2021-12-28 03:04:52,501 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, 87 predicate places. [2021-12-28 03:04:52,501 INFO L470 AbstractCegarLoop]: Abstraction has has 337 places, 335 transitions, 1314 flow [2021-12-28 03:04:52,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 167.35714285714286) internal successors, (4686), 28 states have internal predecessors, (4686), 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) [2021-12-28 03:04:52,503 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:04:52,503 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:04:52,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 03:04:52,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:04:52,731 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:04:52,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:04:52,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1125106460, now seen corresponding path program 2 times [2021-12-28 03:04:52,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:04:52,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768517088] [2021-12-28 03:04:52,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:04:52,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:04:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:04:52,880 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-28 03:04:52,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:04:52,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768517088] [2021-12-28 03:04:52,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768517088] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:04:52,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000441352] [2021-12-28 03:04:52,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:04:52,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:04:52,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:04:52,883 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:04:52,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 03:04:53,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:04:53,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:04:53,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 03:04:53,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:04:53,365 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-28 03:04:53,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:04:53,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000441352] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:04:53,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:04:53,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2021-12-28 03:04:53,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793273893] [2021-12-28 03:04:53,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:04:53,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:04:53,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:04:53,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:04:53,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:04:53,374 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 279 [2021-12-28 03:04:53,374 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 335 transitions, 1314 flow. Second operand has 3 states, 3 states have (on average 248.33333333333334) internal successors, (745), 3 states have internal predecessors, (745), 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) [2021-12-28 03:04:53,374 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:04:53,375 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 279 [2021-12-28 03:04:53,375 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:04:54,214 INFO L129 PetriNetUnfolder]: 1133/5473 cut-off events. [2021-12-28 03:04:54,214 INFO L130 PetriNetUnfolder]: For 5091/5158 co-relation queries the response was YES. [2021-12-28 03:04:54,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11423 conditions, 5473 events. 1133/5473 cut-off events. For 5091/5158 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 53437 event pairs, 365 based on Foata normal form. 78/5029 useless extension candidates. Maximal degree in co-relation 11393. Up to 1577 conditions per place. [2021-12-28 03:04:54,270 INFO L132 encePairwiseOnDemand]: 275/279 looper letters, 42 selfloop transitions, 4 changer transitions 1/341 dead transitions. [2021-12-28 03:04:54,271 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 341 transitions, 1436 flow [2021-12-28 03:04:54,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:04:54,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-28 03:04:54,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 753 transitions. [2021-12-28 03:04:54,273 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.899641577060932 [2021-12-28 03:04:54,273 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 753 transitions. [2021-12-28 03:04:54,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 753 transitions. [2021-12-28 03:04:54,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:04:54,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 753 transitions. [2021-12-28 03:04:54,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 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) [2021-12-28 03:04:54,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 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) [2021-12-28 03:04:54,278 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 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) [2021-12-28 03:04:54,278 INFO L186 Difference]: Start difference. First operand has 337 places, 335 transitions, 1314 flow. Second operand 3 states and 753 transitions. [2021-12-28 03:04:54,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 341 transitions, 1436 flow [2021-12-28 03:04:54,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 341 transitions, 1347 flow, removed 17 selfloop flow, removed 19 redundant places. [2021-12-28 03:04:54,300 INFO L242 Difference]: Finished difference. Result has 319 places, 333 transitions, 1238 flow [2021-12-28 03:04:54,301 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=1208, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1238, PETRI_PLACES=319, PETRI_TRANSITIONS=333} [2021-12-28 03:04:54,302 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, 69 predicate places. [2021-12-28 03:04:54,302 INFO L470 AbstractCegarLoop]: Abstraction has has 319 places, 333 transitions, 1238 flow [2021-12-28 03:04:54,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.33333333333334) internal successors, (745), 3 states have internal predecessors, (745), 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) [2021-12-28 03:04:54,303 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:04:54,303 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:04:54,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 03:04:54,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:04:54,530 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:04:54,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:04:54,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1895565966, now seen corresponding path program 3 times [2021-12-28 03:04:54,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:04:54,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049360823] [2021-12-28 03:04:54,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:04:54,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:04:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:04:54,706 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-28 03:04:54,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:04:54,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049360823] [2021-12-28 03:04:54,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049360823] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:04:54,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167743287] [2021-12-28 03:04:54,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 03:04:54,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:04:54,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:04:54,710 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:04:54,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-28 03:04:54,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-28 03:04:54,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:04:54,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-28 03:04:54,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:04:55,648 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-28 03:04:55,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:04:55,701 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 4 [2021-12-28 03:04:56,578 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-28 03:04:56,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167743287] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:04:56,579 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:04:56,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2021-12-28 03:04:56,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629704606] [2021-12-28 03:04:56,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:04:56,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-28 03:04:56,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:04:56,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-28 03:04:56,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2021-12-28 03:04:56,588 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 279 [2021-12-28 03:04:56,591 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 333 transitions, 1238 flow. Second operand has 28 states, 28 states have (on average 171.46428571428572) internal successors, (4801), 28 states have internal predecessors, (4801), 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) [2021-12-28 03:04:56,591 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:04:56,591 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 279 [2021-12-28 03:04:56,591 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:04:59,524 INFO L129 PetriNetUnfolder]: 2649/8118 cut-off events. [2021-12-28 03:04:59,525 INFO L130 PetriNetUnfolder]: For 7792/7903 co-relation queries the response was YES. [2021-12-28 03:04:59,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18985 conditions, 8118 events. 2649/8118 cut-off events. For 7792/7903 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 74338 event pairs, 439 based on Foata normal form. 210/7703 useless extension candidates. Maximal degree in co-relation 18959. Up to 1065 conditions per place. [2021-12-28 03:04:59,572 INFO L132 encePairwiseOnDemand]: 233/279 looper letters, 115 selfloop transitions, 65 changer transitions 222/548 dead transitions. [2021-12-28 03:04:59,572 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 548 transitions, 2960 flow [2021-12-28 03:04:59,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-12-28 03:04:59,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-12-28 03:04:59,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 11184 transitions. [2021-12-28 03:04:59,585 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6073639622026719 [2021-12-28 03:04:59,585 INFO L72 ComplementDD]: Start complementDD. Operand 66 states and 11184 transitions. [2021-12-28 03:04:59,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 11184 transitions. [2021-12-28 03:04:59,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:04:59,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 66 states and 11184 transitions. [2021-12-28 03:04:59,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 67 states, 66 states have (on average 169.45454545454547) internal successors, (11184), 66 states have internal predecessors, (11184), 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) [2021-12-28 03:04:59,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 67 states, 67 states have (on average 279.0) internal successors, (18693), 67 states have internal predecessors, (18693), 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) [2021-12-28 03:04:59,625 INFO L81 ComplementDD]: Finished complementDD. Result has 67 states, 67 states have (on average 279.0) internal successors, (18693), 67 states have internal predecessors, (18693), 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) [2021-12-28 03:04:59,625 INFO L186 Difference]: Start difference. First operand has 319 places, 333 transitions, 1238 flow. Second operand 66 states and 11184 transitions. [2021-12-28 03:04:59,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 548 transitions, 2960 flow [2021-12-28 03:04:59,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 548 transitions, 2948 flow, removed 4 selfloop flow, removed 1 redundant places. [2021-12-28 03:04:59,654 INFO L242 Difference]: Finished difference. Result has 391 places, 276 transitions, 1049 flow [2021-12-28 03:04:59,655 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=1049, PETRI_PLACES=391, PETRI_TRANSITIONS=276} [2021-12-28 03:04:59,656 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, 141 predicate places. [2021-12-28 03:04:59,656 INFO L470 AbstractCegarLoop]: Abstraction has has 391 places, 276 transitions, 1049 flow [2021-12-28 03:04:59,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 171.46428571428572) internal successors, (4801), 28 states have internal predecessors, (4801), 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) [2021-12-28 03:04:59,657 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:04:59,658 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:04:59,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-28 03:04:59,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:04:59,882 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:04:59,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:04:59,882 INFO L85 PathProgramCache]: Analyzing trace with hash 189528525, now seen corresponding path program 4 times [2021-12-28 03:04:59,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:04:59,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110629369] [2021-12-28 03:04:59,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:04:59,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:04:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:05:00,094 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-28 03:05:00,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:05:00,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110629369] [2021-12-28 03:05:00,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110629369] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:05:00,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013644891] [2021-12-28 03:05:00,094 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-28 03:05:00,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:05:00,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:05:00,095 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:05:00,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-28 03:05:00,247 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-28 03:05:00,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:05:00,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-28 03:05:00,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:05:01,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:05:01,015 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2021-12-28 03:05:01,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:05:01,087 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2021-12-28 03:05:01,126 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 8 [2021-12-28 03:05:01,182 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-28 03:05:01,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:05:01,261 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_426 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_426) c_~q1~0.base) (+ (* c_~q1_back~0 4) c_~q1~0.offset)) 2))) is different from false [2021-12-28 03:05:01,309 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_425 (Array Int Int)) (v_ArrVal_426 (Array Int Int))) (not (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_425) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_426) c_~q1~0.base) (+ (* c_~q1_back~0 4) c_~q1~0.offset)) 2))) is different from false [2021-12-28 03:05:01,317 WARN L838 $PredicateComparison]: unable to prove that (or (= 2 |c_thread1Thread1of1ForFork0_#t~mem1#1|) (forall ((v_ArrVal_425 (Array Int Int)) (v_ArrVal_426 (Array Int Int))) (not (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_425) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_426) c_~q1~0.base) (+ (* c_~q1_back~0 4) c_~q1~0.offset)) 2)))) is different from false [2021-12-28 03:05:01,348 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 84 treesize of output 68 [2021-12-28 03:05:01,351 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 64 treesize of output 52 [2021-12-28 03:05:01,353 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 52 treesize of output 46 [2021-12-28 03:05:02,129 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 1 not checked. [2021-12-28 03:05:02,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013644891] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:05:02,130 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:05:02,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 32 [2021-12-28 03:05:02,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624115999] [2021-12-28 03:05:02,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:05:02,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-28 03:05:02,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:05:02,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-28 03:05:02,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=726, Unknown=3, NotChecked=168, Total=992 [2021-12-28 03:05:02,136 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 279 [2021-12-28 03:05:02,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 276 transitions, 1049 flow. Second operand has 32 states, 32 states have (on average 199.71875) internal successors, (6391), 32 states have internal predecessors, (6391), 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) [2021-12-28 03:05:02,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:05:02,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 279 [2021-12-28 03:05:02,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:05:03,863 INFO L129 PetriNetUnfolder]: 1801/5035 cut-off events. [2021-12-28 03:05:03,863 INFO L130 PetriNetUnfolder]: For 8766/8860 co-relation queries the response was YES. [2021-12-28 03:05:03,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13060 conditions, 5035 events. 1801/5035 cut-off events. For 8766/8860 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 39779 event pairs, 344 based on Foata normal form. 63/4764 useless extension candidates. Maximal degree in co-relation 13024. Up to 2075 conditions per place. [2021-12-28 03:05:03,916 INFO L132 encePairwiseOnDemand]: 248/279 looper letters, 84 selfloop transitions, 78 changer transitions 25/374 dead transitions. [2021-12-28 03:05:03,917 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 374 transitions, 2161 flow [2021-12-28 03:05:03,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-28 03:05:03,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-12-28 03:05:03,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 4631 transitions. [2021-12-28 03:05:03,922 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7216767960105969 [2021-12-28 03:05:03,922 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 4631 transitions. [2021-12-28 03:05:03,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 4631 transitions. [2021-12-28 03:05:03,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:05:03,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 4631 transitions. [2021-12-28 03:05:03,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 201.34782608695653) internal successors, (4631), 23 states have internal predecessors, (4631), 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) [2021-12-28 03:05:03,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 279.0) internal successors, (6696), 24 states have internal predecessors, (6696), 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) [2021-12-28 03:05:03,935 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 279.0) internal successors, (6696), 24 states have internal predecessors, (6696), 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) [2021-12-28 03:05:03,935 INFO L186 Difference]: Start difference. First operand has 391 places, 276 transitions, 1049 flow. Second operand 23 states and 4631 transitions. [2021-12-28 03:05:03,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 374 transitions, 2161 flow [2021-12-28 03:05:03,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 374 transitions, 1888 flow, removed 23 selfloop flow, removed 50 redundant places. [2021-12-28 03:05:03,973 INFO L242 Difference]: Finished difference. Result has 310 places, 321 transitions, 1431 flow [2021-12-28 03:05:03,974 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1431, PETRI_PLACES=310, PETRI_TRANSITIONS=321} [2021-12-28 03:05:03,976 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, 60 predicate places. [2021-12-28 03:05:03,976 INFO L470 AbstractCegarLoop]: Abstraction has has 310 places, 321 transitions, 1431 flow [2021-12-28 03:05:03,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 199.71875) internal successors, (6391), 32 states have internal predecessors, (6391), 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) [2021-12-28 03:05:03,977 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:05:03,977 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:05:04,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-28 03:05:04,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-28 03:05:04,201 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:05:04,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:05:04,202 INFO L85 PathProgramCache]: Analyzing trace with hash 2132578177, now seen corresponding path program 5 times [2021-12-28 03:05:04,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:05:04,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278210358] [2021-12-28 03:05:04,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:05:04,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:05:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:05:04,435 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-28 03:05:04,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:05:04,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278210358] [2021-12-28 03:05:04,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278210358] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:05:04,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362129277] [2021-12-28 03:05:04,436 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-28 03:05:04,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:05:04,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:05:04,438 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:05:04,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-28 03:05:04,618 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-12-28 03:05:04,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:05:04,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 03:05:04,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:05:04,936 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-28 03:05:04,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:05:04,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362129277] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:05:04,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:05:04,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2021-12-28 03:05:04,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302762530] [2021-12-28 03:05:04,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:05:04,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:05:04,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:05:04,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:05:04,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-12-28 03:05:04,939 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 279 [2021-12-28 03:05:04,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 321 transitions, 1431 flow. Second operand has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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) [2021-12-28 03:05:04,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:05:04,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 279 [2021-12-28 03:05:04,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:05:05,260 INFO L129 PetriNetUnfolder]: 646/2278 cut-off events. [2021-12-28 03:05:05,261 INFO L130 PetriNetUnfolder]: For 2990/3068 co-relation queries the response was YES. [2021-12-28 03:05:05,269 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5514 conditions, 2278 events. 646/2278 cut-off events. For 2990/3068 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 15202 event pairs, 132 based on Foata normal form. 11/2113 useless extension candidates. Maximal degree in co-relation 5488. Up to 457 conditions per place. [2021-12-28 03:05:05,270 INFO L132 encePairwiseOnDemand]: 275/279 looper letters, 0 selfloop transitions, 0 changer transitions 337/337 dead transitions. [2021-12-28 03:05:05,271 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 337 transitions, 1642 flow [2021-12-28 03:05:05,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:05:05,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-28 03:05:05,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1246 transitions. [2021-12-28 03:05:05,273 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8931899641577061 [2021-12-28 03:05:05,273 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1246 transitions. [2021-12-28 03:05:05,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1246 transitions. [2021-12-28 03:05:05,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:05:05,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1246 transitions. [2021-12-28 03:05:05,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 249.2) internal successors, (1246), 5 states have internal predecessors, (1246), 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) [2021-12-28 03:05:05,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 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) [2021-12-28 03:05:05,279 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 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) [2021-12-28 03:05:05,280 INFO L186 Difference]: Start difference. First operand has 310 places, 321 transitions, 1431 flow. Second operand 5 states and 1246 transitions. [2021-12-28 03:05:05,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 337 transitions, 1642 flow [2021-12-28 03:05:05,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 337 transitions, 1568 flow, removed 12 selfloop flow, removed 16 redundant places. [2021-12-28 03:05:05,293 INFO L242 Difference]: Finished difference. Result has 290 places, 0 transitions, 0 flow [2021-12-28 03:05:05,293 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=1337, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=290, PETRI_TRANSITIONS=0} [2021-12-28 03:05:05,294 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, 40 predicate places. [2021-12-28 03:05:05,294 INFO L470 AbstractCegarLoop]: Abstraction has has 290 places, 0 transitions, 0 flow [2021-12-28 03:05:05,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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) [2021-12-28 03:05:05,297 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-12-28 03:05:05,297 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-12-28 03:05:05,297 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-12-28 03:05:05,298 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-12-28 03:05:05,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-28 03:05:05,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-28 03:05:05,528 INFO L732 BasicCegarLoop]: Path program histogram: [5, 2, 2, 1, 1, 1, 1] [2021-12-28 03:05:05,529 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-28 03:05:05,529 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-28 03:05:05,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.12 03:05:05 BasicIcfg [2021-12-28 03:05:05,531 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-28 03:05:05,532 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 03:05:05,532 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 03:05:05,532 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 03:05:05,533 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:04:36" (3/4) ... [2021-12-28 03:05:05,535 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-28 03:05:05,539 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-12-28 03:05:05,539 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-12-28 03:05:05,540 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-12-28 03:05:05,546 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2021-12-28 03:05:05,547 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-28 03:05:05,547 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-28 03:05:05,548 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-28 03:05:05,590 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-28 03:05:05,590 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 03:05:05,591 INFO L158 Benchmark]: Toolchain (without parser) took 30345.48ms. Allocated memory was 54.5MB in the beginning and 1.0GB in the end (delta: 992.0MB). Free memory was 32.9MB in the beginning and 630.8MB in the end (delta: -597.9MB). Peak memory consumption was 394.1MB. Max. memory is 16.1GB. [2021-12-28 03:05:05,591 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory was 36.5MB in the beginning and 36.5MB in the end (delta: 44.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 03:05:05,591 INFO L158 Benchmark]: CACSL2BoogieTranslator took 383.20ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 32.7MB in the beginning and 47.5MB in the end (delta: -14.8MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2021-12-28 03:05:05,592 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.35ms. Allocated memory is still 67.1MB. Free memory was 47.3MB in the beginning and 44.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 03:05:05,592 INFO L158 Benchmark]: Boogie Preprocessor took 51.60ms. Allocated memory is still 67.1MB. Free memory was 44.8MB in the beginning and 42.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 03:05:05,593 INFO L158 Benchmark]: RCFGBuilder took 769.36ms. Allocated memory is still 67.1MB. Free memory was 42.7MB in the beginning and 44.6MB in the end (delta: -1.9MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. [2021-12-28 03:05:05,593 INFO L158 Benchmark]: TraceAbstraction took 28999.56ms. Allocated memory was 67.1MB in the beginning and 1.0GB in the end (delta: 979.4MB). Free memory was 44.0MB in the beginning and 636.0MB in the end (delta: -592.0MB). Peak memory consumption was 798.1MB. Max. memory is 16.1GB. [2021-12-28 03:05:05,593 INFO L158 Benchmark]: Witness Printer took 58.49ms. Allocated memory is still 1.0GB. Free memory was 636.0MB in the beginning and 630.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-28 03:05:05,595 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory was 36.5MB in the beginning and 36.5MB in the end (delta: 44.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 383.20ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 32.7MB in the beginning and 47.5MB in the end (delta: -14.8MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.35ms. Allocated memory is still 67.1MB. Free memory was 47.3MB in the beginning and 44.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.60ms. Allocated memory is still 67.1MB. Free memory was 44.8MB in the beginning and 42.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 769.36ms. Allocated memory is still 67.1MB. Free memory was 42.7MB in the beginning and 44.6MB in the end (delta: -1.9MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. * TraceAbstraction took 28999.56ms. Allocated memory was 67.1MB in the beginning and 1.0GB in the end (delta: 979.4MB). Free memory was 44.0MB in the beginning and 636.0MB in the end (delta: -592.0MB). Peak memory consumption was 798.1MB. Max. memory is 16.1GB. * Witness Printer took 58.49ms. Allocated memory is still 1.0GB. Free memory was 636.0MB in the beginning and 630.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 156]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 301 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 28.8s, OverallIterations: 13, TraceHistogramMax: 2, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 14.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2347 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2347 mSDsluCounter, 2383 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 248 IncrementalHoareTripleChecker+Unchecked, 3192 mSDsCounter, 303 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5264 IncrementalHoareTripleChecker+Invalid, 5815 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 303 mSolverCounterUnsat, 319 mSDtfsCounter, 5264 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3391 GetRequests, 3074 SyntacticMatches, 7 SemanticMatches, 310 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 4801 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1431occurred in iteration=12, InterpolantAutomatonStates: 205, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 9.4s InterpolantComputationTime, 5113 NumberOfCodeBlocks, 5029 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 6053 ConstructedInterpolants, 15 QuantifiedInterpolants, 22973 SizeOfPredicates, 88 NumberOfNonLiveVariables, 4797 ConjunctsInSsa, 104 ConjunctsInUnsatCore, 26 InterpolantComputations, 9 PerfectInterpolantSequences, 275/350 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-28 03:05:05,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE