./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/unroll-3.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/unroll-3.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 199b95a7803e428766b942c5c5c486b02a8ea32baf687cdef6ce754bef283884 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:09:24,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:09:24,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:09:24,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:09:24,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:09:24,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:09:24,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:09:24,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:09:24,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:09:24,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:09:24,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:09:24,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:09:24,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:09:24,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:09:24,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:09:24,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:09:24,380 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:09:24,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:09:24,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:09:24,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:09:24,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:09:24,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:09:24,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:09:24,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:09:24,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:09:24,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:09:24,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:09:24,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:09:24,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:09:24,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:09:24,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:09:24,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:09:24,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:09:24,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:09:24,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:09:24,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:09:24,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:09:24,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:09:24,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:09:24,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:09:24,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:09:24,419 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 03:09:24,434 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:09:24,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:09:24,435 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:09:24,435 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:09:24,436 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:09:24,436 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:09:24,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:09:24,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:09:24,437 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:09:24,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:09:24,438 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 03:09:24,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:09:24,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 03:09:24,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:09:24,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:09:24,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:09:24,439 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:09:24,439 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 03:09:24,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:09:24,439 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:09:24,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:09:24,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:09:24,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:09:24,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:09:24,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:09:24,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:09:24,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:09:24,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:09:24,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:09:24,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:09:24,441 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:09:24,441 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:09:24,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:09:24,441 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 199b95a7803e428766b942c5c5c486b02a8ea32baf687cdef6ce754bef283884 [2021-12-28 03:09:24,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:09:24,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:09:24,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:09:24,713 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:09:24,715 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:09:24,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/unroll-3.wvr.c [2021-12-28 03:09:24,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ae940923/1b5690e818494c9fa6a3120fb2eea53a/FLAGce5557c8d [2021-12-28 03:09:25,114 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:09:25,114 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-3.wvr.c [2021-12-28 03:09:25,118 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ae940923/1b5690e818494c9fa6a3120fb2eea53a/FLAGce5557c8d [2021-12-28 03:09:25,128 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ae940923/1b5690e818494c9fa6a3120fb2eea53a [2021-12-28 03:09:25,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:09:25,130 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:09:25,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:09:25,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:09:25,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:09:25,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:09:25" (1/1) ... [2021-12-28 03:09:25,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11e2f6dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:09:25, skipping insertion in model container [2021-12-28 03:09:25,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:09:25" (1/1) ... [2021-12-28 03:09:25,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:09:25,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:09:25,294 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/unroll-3.wvr.c[2500,2513] [2021-12-28 03:09:25,303 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:09:25,308 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:09:25,386 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/unroll-3.wvr.c[2500,2513] [2021-12-28 03:09:25,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:09:25,399 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:09:25,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:09:25 WrapperNode [2021-12-28 03:09:25,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:09:25,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:09:25,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:09:25,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:09:25,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:09:25" (1/1) ... [2021-12-28 03:09:25,427 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:09:25" (1/1) ... [2021-12-28 03:09:25,450 INFO L137 Inliner]: procedures = 24, calls = 34, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 144 [2021-12-28 03:09:25,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:09:25,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:09:25,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:09:25,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:09:25,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:09:25" (1/1) ... [2021-12-28 03:09:25,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:09:25" (1/1) ... [2021-12-28 03:09:25,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:09:25" (1/1) ... [2021-12-28 03:09:25,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:09:25" (1/1) ... [2021-12-28 03:09:25,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:09:25" (1/1) ... [2021-12-28 03:09:25,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:09:25" (1/1) ... [2021-12-28 03:09:25,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:09:25" (1/1) ... [2021-12-28 03:09:25,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:09:25,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:09:25,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:09:25,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:09:25,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:09:25" (1/1) ... [2021-12-28 03:09:25,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:09:25,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:09:25,537 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 03:09:25,611 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 03:09:25,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:09:25,628 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-28 03:09:25,628 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-28 03:09:25,628 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-28 03:09:25,628 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-28 03:09:25,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:09:25,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:09:25,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:09:25,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:09:25,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:09:25,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:09:25,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:09:25,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:09:25,633 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 03:09:25,729 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:09:25,730 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:09:25,961 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:09:25,968 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:09:25,970 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-28 03:09:25,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:09:25 BoogieIcfgContainer [2021-12-28 03:09:25,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:09:25,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:09:25,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:09:25,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:09:25,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:09:25" (1/3) ... [2021-12-28 03:09:25,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13341a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:09:25, skipping insertion in model container [2021-12-28 03:09:25,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:09:25" (2/3) ... [2021-12-28 03:09:25,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13341a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:09:25, skipping insertion in model container [2021-12-28 03:09:25,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:09:25" (3/3) ... [2021-12-28 03:09:25,980 INFO L111 eAbstractionObserver]: Analyzing ICFG unroll-3.wvr.c [2021-12-28 03:09:25,983 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-28 03:09:25,984 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:09:25,984 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:09:25,984 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-28 03:09:26,034 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,035 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,035 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,036 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,037 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,040 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,040 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,040 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,041 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,041 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,041 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,042 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,043 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,043 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,043 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,043 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,044 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,044 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,044 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,044 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,061 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,062 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,063 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,063 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,064 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,064 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,065 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,065 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,065 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,065 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,065 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,066 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,066 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,066 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,066 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,066 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,066 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,067 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,067 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,067 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,067 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,069 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,070 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,071 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,072 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,072 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,072 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,073 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,073 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,075 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,075 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,075 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,075 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,076 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,076 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,076 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,076 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,076 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,077 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,077 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,077 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,078 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,078 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,079 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,079 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,079 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,080 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,080 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,080 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,080 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,080 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,081 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,081 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,081 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,081 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,081 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,081 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,082 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,082 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,082 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,082 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,083 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,083 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,085 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,086 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,086 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,086 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,087 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,087 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,088 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,091 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,092 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,096 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,097 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,097 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,097 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,097 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,098 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,098 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,098 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,098 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,098 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,099 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,099 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,099 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,100 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,100 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,101 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,101 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,101 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,102 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,102 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,102 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,103 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,103 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,103 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,103 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,103 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,104 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,104 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,105 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,105 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,105 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,105 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,107 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,107 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,107 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,107 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,107 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,108 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,109 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,109 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,111 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,111 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,111 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,111 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,111 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,112 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,112 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,114 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,114 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,114 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,115 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,115 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,115 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,115 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,115 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,115 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,115 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,115 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:26,121 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-28 03:09:26,153 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:09:26,158 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 03:09:26,158 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-28 03:09:26,166 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 177 places, 185 transitions, 386 flow [2021-12-28 03:09:26,240 INFO L129 PetriNetUnfolder]: 15/183 cut-off events. [2021-12-28 03:09:26,240 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-28 03:09:26,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 183 events. 15/183 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 177 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 110. Up to 2 conditions per place. [2021-12-28 03:09:26,248 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 185 transitions, 386 flow [2021-12-28 03:09:26,252 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 174 transitions, 360 flow [2021-12-28 03:09:26,292 INFO L129 PetriNetUnfolder]: 13/156 cut-off events. [2021-12-28 03:09:26,293 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-28 03:09:26,293 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:09:26,293 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] [2021-12-28 03:09:26,294 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-28 03:09:26,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:09:26,299 INFO L85 PathProgramCache]: Analyzing trace with hash 684426458, now seen corresponding path program 1 times [2021-12-28 03:09:26,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:09:26,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991344745] [2021-12-28 03:09:26,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:09:26,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:09:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:09:26,494 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 03:09:26,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:09:26,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991344745] [2021-12-28 03:09:26,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991344745] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:09:26,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:09:26,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 03:09:26,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789153127] [2021-12-28 03:09:26,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:09:26,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 03:09:26,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:09:26,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 03:09:26,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 03:09:26,529 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 185 [2021-12-28 03:09:26,534 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 174 transitions, 360 flow. Second operand has 2 states, 2 states have (on average 170.5) internal successors, (341), 2 states have internal predecessors, (341), 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 03:09:26,534 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:09:26,534 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 185 [2021-12-28 03:09:26,535 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:09:26,573 INFO L129 PetriNetUnfolder]: 3/162 cut-off events. [2021-12-28 03:09:26,573 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-12-28 03:09:26,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 162 events. 3/162 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 143 event pairs, 0 based on Foata normal form. 15/165 useless extension candidates. Maximal degree in co-relation 104. Up to 5 conditions per place. [2021-12-28 03:09:26,576 INFO L132 encePairwiseOnDemand]: 173/185 looper letters, 4 selfloop transitions, 0 changer transitions 5/162 dead transitions. [2021-12-28 03:09:26,576 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 162 transitions, 344 flow [2021-12-28 03:09:26,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 03:09:26,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-28 03:09:26,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 352 transitions. [2021-12-28 03:09:26,590 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9513513513513514 [2021-12-28 03:09:26,590 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 352 transitions. [2021-12-28 03:09:26,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 352 transitions. [2021-12-28 03:09:26,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:09:26,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 352 transitions. [2021-12-28 03:09:26,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 176.0) internal successors, (352), 2 states have internal predecessors, (352), 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 03:09:26,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 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 03:09:26,602 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 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 03:09:26,603 INFO L186 Difference]: Start difference. First operand has 166 places, 174 transitions, 360 flow. Second operand 2 states and 352 transitions. [2021-12-28 03:09:26,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 162 transitions, 344 flow [2021-12-28 03:09:26,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 162 transitions, 336 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-28 03:09:26,610 INFO L242 Difference]: Finished difference. Result has 163 places, 157 transitions, 318 flow [2021-12-28 03:09:26,612 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=318, PETRI_PLACES=163, PETRI_TRANSITIONS=157} [2021-12-28 03:09:26,618 INFO L334 CegarLoopForPetriNet]: 166 programPoint places, -3 predicate places. [2021-12-28 03:09:26,618 INFO L470 AbstractCegarLoop]: Abstraction has has 163 places, 157 transitions, 318 flow [2021-12-28 03:09:26,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 170.5) internal successors, (341), 2 states have internal predecessors, (341), 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 03:09:26,618 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:09:26,619 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] [2021-12-28 03:09:26,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:09:26,619 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-28 03:09:26,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:09:26,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1060148991, now seen corresponding path program 1 times [2021-12-28 03:09:26,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:09:26,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734846382] [2021-12-28 03:09:26,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:09:26,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:09:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:09:26,837 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 03:09:26,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:09:26,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734846382] [2021-12-28 03:09:26,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734846382] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:09:26,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:09:26,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:09:26,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66895109] [2021-12-28 03:09:26,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:09:26,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:09:26,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:09:26,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:09:26,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:09:26,842 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 185 [2021-12-28 03:09:26,843 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 157 transitions, 318 flow. Second operand has 6 states, 6 states have (on average 133.33333333333334) internal successors, (800), 6 states have internal predecessors, (800), 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 03:09:26,843 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:09:26,843 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 185 [2021-12-28 03:09:26,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:09:27,015 INFO L129 PetriNetUnfolder]: 97/652 cut-off events. [2021-12-28 03:09:27,015 INFO L130 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2021-12-28 03:09:27,018 INFO L84 FinitePrefix]: Finished finitePrefix Result has 884 conditions, 652 events. 97/652 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3381 event pairs, 29 based on Foata normal form. 1/604 useless extension candidates. Maximal degree in co-relation 881. Up to 106 conditions per place. [2021-12-28 03:09:27,020 INFO L132 encePairwiseOnDemand]: 178/185 looper letters, 59 selfloop transitions, 5 changer transitions 4/187 dead transitions. [2021-12-28 03:09:27,020 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 187 transitions, 519 flow [2021-12-28 03:09:27,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:09:27,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-28 03:09:27,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 843 transitions. [2021-12-28 03:09:27,024 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7594594594594595 [2021-12-28 03:09:27,024 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 843 transitions. [2021-12-28 03:09:27,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 843 transitions. [2021-12-28 03:09:27,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:09:27,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 843 transitions. [2021-12-28 03:09:27,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 140.5) internal successors, (843), 6 states have internal predecessors, (843), 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 03:09:27,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 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 03:09:27,029 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 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 03:09:27,029 INFO L186 Difference]: Start difference. First operand has 163 places, 157 transitions, 318 flow. Second operand 6 states and 843 transitions. [2021-12-28 03:09:27,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 187 transitions, 519 flow [2021-12-28 03:09:27,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 187 transitions, 519 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-28 03:09:27,033 INFO L242 Difference]: Finished difference. Result has 166 places, 160 transitions, 347 flow [2021-12-28 03:09:27,033 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=347, PETRI_PLACES=166, PETRI_TRANSITIONS=160} [2021-12-28 03:09:27,034 INFO L334 CegarLoopForPetriNet]: 166 programPoint places, 0 predicate places. [2021-12-28 03:09:27,034 INFO L470 AbstractCegarLoop]: Abstraction has has 166 places, 160 transitions, 347 flow [2021-12-28 03:09:27,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 133.33333333333334) internal successors, (800), 6 states have internal predecessors, (800), 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 03:09:27,035 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:09:27,035 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] [2021-12-28 03:09:27,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:09:27,035 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-28 03:09:27,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:09:27,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1799470512, now seen corresponding path program 1 times [2021-12-28 03:09:27,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:09:27,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298785625] [2021-12-28 03:09:27,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:09:27,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:09:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:09:27,140 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 03:09:27,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:09:27,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298785625] [2021-12-28 03:09:27,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298785625] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:09:27,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:09:27,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:09:27,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722074485] [2021-12-28 03:09:27,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:09:27,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:09:27,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:09:27,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:09:27,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:09:27,143 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 185 [2021-12-28 03:09:27,144 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 160 transitions, 347 flow. Second operand has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 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 03:09:27,144 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:09:27,144 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 185 [2021-12-28 03:09:27,144 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:09:27,228 INFO L129 PetriNetUnfolder]: 86/726 cut-off events. [2021-12-28 03:09:27,228 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-12-28 03:09:27,229 INFO L84 FinitePrefix]: Finished finitePrefix Result has 971 conditions, 726 events. 86/726 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3692 event pairs, 40 based on Foata normal form. 0/646 useless extension candidates. Maximal degree in co-relation 964. Up to 141 conditions per place. [2021-12-28 03:09:27,231 INFO L132 encePairwiseOnDemand]: 179/185 looper letters, 23 selfloop transitions, 5 changer transitions 0/170 dead transitions. [2021-12-28 03:09:27,231 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 170 transitions, 426 flow [2021-12-28 03:09:27,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:09:27,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-28 03:09:27,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 799 transitions. [2021-12-28 03:09:27,233 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8637837837837837 [2021-12-28 03:09:27,233 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 799 transitions. [2021-12-28 03:09:27,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 799 transitions. [2021-12-28 03:09:27,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:09:27,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 799 transitions. [2021-12-28 03:09:27,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.8) internal successors, (799), 5 states have internal predecessors, (799), 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 03:09:27,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 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 03:09:27,237 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 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 03:09:27,237 INFO L186 Difference]: Start difference. First operand has 166 places, 160 transitions, 347 flow. Second operand 5 states and 799 transitions. [2021-12-28 03:09:27,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 170 transitions, 426 flow [2021-12-28 03:09:27,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 170 transitions, 422 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-12-28 03:09:27,240 INFO L242 Difference]: Finished difference. Result has 168 places, 162 transitions, 367 flow [2021-12-28 03:09:27,241 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=367, PETRI_PLACES=168, PETRI_TRANSITIONS=162} [2021-12-28 03:09:27,241 INFO L334 CegarLoopForPetriNet]: 166 programPoint places, 2 predicate places. [2021-12-28 03:09:27,241 INFO L470 AbstractCegarLoop]: Abstraction has has 168 places, 162 transitions, 367 flow [2021-12-28 03:09:27,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 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 03:09:27,242 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:09:27,242 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] [2021-12-28 03:09:27,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:09:27,243 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-28 03:09:27,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:09:27,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1678464470, now seen corresponding path program 2 times [2021-12-28 03:09:27,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:09:27,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564135526] [2021-12-28 03:09:27,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:09:27,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:09:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:09:27,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:09:27,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:09:27,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564135526] [2021-12-28 03:09:27,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564135526] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:09:27,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380624304] [2021-12-28 03:09:27,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:09:27,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:09:27,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:09:27,360 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 03:09:27,363 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 03:09:27,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-28 03:09:27,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:09:27,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-28 03:09:27,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:09:27,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:09:27,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:09:27,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380624304] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:09:27,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:09:27,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2021-12-28 03:09:27,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819400579] [2021-12-28 03:09:27,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:09:27,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:09:27,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:09:27,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:09:27,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:09:27,741 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 185 [2021-12-28 03:09:27,742 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 162 transitions, 367 flow. Second operand has 8 states, 8 states have (on average 131.125) internal successors, (1049), 8 states have internal predecessors, (1049), 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 03:09:27,742 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:09:27,742 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 185 [2021-12-28 03:09:27,742 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:09:27,990 INFO L129 PetriNetUnfolder]: 31/507 cut-off events. [2021-12-28 03:09:27,990 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2021-12-28 03:09:27,992 INFO L84 FinitePrefix]: Finished finitePrefix Result has 675 conditions, 507 events. 31/507 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1960 event pairs, 18 based on Foata normal form. 0/473 useless extension candidates. Maximal degree in co-relation 667. Up to 81 conditions per place. [2021-12-28 03:09:27,994 INFO L132 encePairwiseOnDemand]: 173/185 looper letters, 33 selfloop transitions, 11 changer transitions 0/166 dead transitions. [2021-12-28 03:09:27,995 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 166 transitions, 463 flow [2021-12-28 03:09:27,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 03:09:27,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-28 03:09:27,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1442 transitions. [2021-12-28 03:09:27,999 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7085995085995086 [2021-12-28 03:09:27,999 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1442 transitions. [2021-12-28 03:09:27,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1442 transitions. [2021-12-28 03:09:28,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:09:28,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1442 transitions. [2021-12-28 03:09:28,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 131.0909090909091) internal successors, (1442), 11 states have internal predecessors, (1442), 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 03:09:28,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 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 03:09:28,008 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 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 03:09:28,008 INFO L186 Difference]: Start difference. First operand has 168 places, 162 transitions, 367 flow. Second operand 11 states and 1442 transitions. [2021-12-28 03:09:28,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 166 transitions, 463 flow [2021-12-28 03:09:28,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 166 transitions, 457 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-28 03:09:28,011 INFO L242 Difference]: Finished difference. Result has 177 places, 163 transitions, 391 flow [2021-12-28 03:09:28,012 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=391, PETRI_PLACES=177, PETRI_TRANSITIONS=163} [2021-12-28 03:09:28,013 INFO L334 CegarLoopForPetriNet]: 166 programPoint places, 11 predicate places. [2021-12-28 03:09:28,013 INFO L470 AbstractCegarLoop]: Abstraction has has 177 places, 163 transitions, 391 flow [2021-12-28 03:09:28,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 131.125) internal successors, (1049), 8 states have internal predecessors, (1049), 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 03:09:28,013 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:09:28,013 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] [2021-12-28 03:09:28,037 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 03:09:28,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:09:28,229 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-28 03:09:28,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:09:28,230 INFO L85 PathProgramCache]: Analyzing trace with hash -2061797940, now seen corresponding path program 1 times [2021-12-28 03:09:28,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:09:28,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650433500] [2021-12-28 03:09:28,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:09:28,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:09:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:09:28,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:09:28,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:09:28,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650433500] [2021-12-28 03:09:28,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650433500] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:09:28,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:09:28,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:09:28,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811951873] [2021-12-28 03:09:28,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:09:28,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:09:28,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:09:28,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:09:28,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:09:28,348 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 185 [2021-12-28 03:09:28,349 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 163 transitions, 391 flow. Second operand has 5 states, 5 states have (on average 153.8) internal successors, (769), 5 states have internal predecessors, (769), 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 03:09:28,349 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:09:28,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 185 [2021-12-28 03:09:28,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:09:28,481 INFO L129 PetriNetUnfolder]: 182/1173 cut-off events. [2021-12-28 03:09:28,482 INFO L130 PetriNetUnfolder]: For 108/108 co-relation queries the response was YES. [2021-12-28 03:09:28,484 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 1173 events. 182/1173 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 7305 event pairs, 58 based on Foata normal form. 12/1114 useless extension candidates. Maximal degree in co-relation 1745. Up to 175 conditions per place. [2021-12-28 03:09:28,487 INFO L132 encePairwiseOnDemand]: 177/185 looper letters, 53 selfloop transitions, 7 changer transitions 1/201 dead transitions. [2021-12-28 03:09:28,487 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 201 transitions, 625 flow [2021-12-28 03:09:28,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:09:28,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-28 03:09:28,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 812 transitions. [2021-12-28 03:09:28,489 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8778378378378379 [2021-12-28 03:09:28,489 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 812 transitions. [2021-12-28 03:09:28,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 812 transitions. [2021-12-28 03:09:28,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:09:28,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 812 transitions. [2021-12-28 03:09:28,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.4) internal successors, (812), 5 states have internal predecessors, (812), 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 03:09:28,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 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 03:09:28,493 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 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 03:09:28,493 INFO L186 Difference]: Start difference. First operand has 177 places, 163 transitions, 391 flow. Second operand 5 states and 812 transitions. [2021-12-28 03:09:28,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 201 transitions, 625 flow [2021-12-28 03:09:28,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 201 transitions, 605 flow, removed 0 selfloop flow, removed 9 redundant places. [2021-12-28 03:09:28,498 INFO L242 Difference]: Finished difference. Result has 175 places, 169 transitions, 428 flow [2021-12-28 03:09:28,498 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=428, PETRI_PLACES=175, PETRI_TRANSITIONS=169} [2021-12-28 03:09:28,500 INFO L334 CegarLoopForPetriNet]: 166 programPoint places, 9 predicate places. [2021-12-28 03:09:28,500 INFO L470 AbstractCegarLoop]: Abstraction has has 175 places, 169 transitions, 428 flow [2021-12-28 03:09:28,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 153.8) internal successors, (769), 5 states have internal predecessors, (769), 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 03:09:28,501 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:09:28,501 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] [2021-12-28 03:09:28,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 03:09:28,501 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-28 03:09:28,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:09:28,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1755447122, now seen corresponding path program 2 times [2021-12-28 03:09:28,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:09:28,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126629528] [2021-12-28 03:09:28,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:09:28,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:09:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:09:28,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:09:28,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:09:28,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126629528] [2021-12-28 03:09:28,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126629528] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:09:28,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349172024] [2021-12-28 03:09:28,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:09:28,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:09:28,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:09:28,638 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 03:09:28,639 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 03:09:28,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:09:28,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:09:28,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 03:09:28,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:09:28,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:09:28,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:09:29,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:09:29,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349172024] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-28 03:09:29,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:09:29,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 5] total 9 [2021-12-28 03:09:29,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538701454] [2021-12-28 03:09:29,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:09:29,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:09:29,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:09:29,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:09:29,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:09:29,071 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 185 [2021-12-28 03:09:29,072 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 169 transitions, 428 flow. Second operand has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 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 03:09:29,072 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:09:29,072 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 185 [2021-12-28 03:09:29,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:09:29,178 INFO L129 PetriNetUnfolder]: 124/977 cut-off events. [2021-12-28 03:09:29,179 INFO L130 PetriNetUnfolder]: For 361/378 co-relation queries the response was YES. [2021-12-28 03:09:29,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1571 conditions, 977 events. 124/977 cut-off events. For 361/378 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 5707 event pairs, 22 based on Foata normal form. 14/932 useless extension candidates. Maximal degree in co-relation 1559. Up to 152 conditions per place. [2021-12-28 03:09:29,182 INFO L132 encePairwiseOnDemand]: 180/185 looper letters, 26 selfloop transitions, 10 changer transitions 2/183 dead transitions. [2021-12-28 03:09:29,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 183 transitions, 574 flow [2021-12-28 03:09:29,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 03:09:29,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-12-28 03:09:29,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 647 transitions. [2021-12-28 03:09:29,184 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8743243243243243 [2021-12-28 03:09:29,184 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 647 transitions. [2021-12-28 03:09:29,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 647 transitions. [2021-12-28 03:09:29,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:09:29,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 647 transitions. [2021-12-28 03:09:29,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 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 03:09:29,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 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 03:09:29,187 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 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 03:09:29,187 INFO L186 Difference]: Start difference. First operand has 175 places, 169 transitions, 428 flow. Second operand 4 states and 647 transitions. [2021-12-28 03:09:29,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 183 transitions, 574 flow [2021-12-28 03:09:29,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 183 transitions, 574 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-28 03:09:29,193 INFO L242 Difference]: Finished difference. Result has 181 places, 174 transitions, 504 flow [2021-12-28 03:09:29,193 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=504, PETRI_PLACES=181, PETRI_TRANSITIONS=174} [2021-12-28 03:09:29,195 INFO L334 CegarLoopForPetriNet]: 166 programPoint places, 15 predicate places. [2021-12-28 03:09:29,195 INFO L470 AbstractCegarLoop]: Abstraction has has 181 places, 174 transitions, 504 flow [2021-12-28 03:09:29,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 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 03:09:29,195 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:09:29,196 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] [2021-12-28 03:09:29,213 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 03:09:29,408 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 03:09:29,408 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-28 03:09:29,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:09:29,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1895873466, now seen corresponding path program 3 times [2021-12-28 03:09:29,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:09:29,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900714812] [2021-12-28 03:09:29,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:09:29,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:09:29,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:09:29,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:09:29,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:09:29,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900714812] [2021-12-28 03:09:29,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900714812] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:09:29,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576795895] [2021-12-28 03:09:29,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 03:09:29,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:09:29,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:09:29,489 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 03:09:29,490 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 03:09:29,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-28 03:09:29,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:09:29,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 03:09:29,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:09:29,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:09:29,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:09:30,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:09:30,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576795895] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:09:30,007 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:09:30,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 8 [2021-12-28 03:09:30,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264707800] [2021-12-28 03:09:30,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:09:30,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:09:30,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:09:30,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:09:30,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:09:30,011 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 185 [2021-12-28 03:09:30,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 174 transitions, 504 flow. Second operand has 8 states, 8 states have (on average 154.125) internal successors, (1233), 8 states have internal predecessors, (1233), 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 03:09:30,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:09:30,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 185 [2021-12-28 03:09:30,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:09:30,184 INFO L129 PetriNetUnfolder]: 235/1543 cut-off events. [2021-12-28 03:09:30,184 INFO L130 PetriNetUnfolder]: For 1086/1094 co-relation queries the response was YES. [2021-12-28 03:09:30,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2790 conditions, 1543 events. 235/1543 cut-off events. For 1086/1094 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 10604 event pairs, 70 based on Foata normal form. 8/1459 useless extension candidates. Maximal degree in co-relation 2775. Up to 346 conditions per place. [2021-12-28 03:09:30,192 INFO L132 encePairwiseOnDemand]: 179/185 looper letters, 58 selfloop transitions, 26 changer transitions 2/226 dead transitions. [2021-12-28 03:09:30,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 226 transitions, 935 flow [2021-12-28 03:09:30,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:09:30,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-28 03:09:30,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1431 transitions. [2021-12-28 03:09:30,194 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8594594594594595 [2021-12-28 03:09:30,195 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1431 transitions. [2021-12-28 03:09:30,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1431 transitions. [2021-12-28 03:09:30,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:09:30,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1431 transitions. [2021-12-28 03:09:30,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 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 03:09:30,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 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 03:09:30,200 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 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 03:09:30,200 INFO L186 Difference]: Start difference. First operand has 181 places, 174 transitions, 504 flow. Second operand 9 states and 1431 transitions. [2021-12-28 03:09:30,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 226 transitions, 935 flow [2021-12-28 03:09:30,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 226 transitions, 927 flow, removed 4 selfloop flow, removed 0 redundant places. [2021-12-28 03:09:30,225 INFO L242 Difference]: Finished difference. Result has 195 places, 193 transitions, 737 flow [2021-12-28 03:09:30,226 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=737, PETRI_PLACES=195, PETRI_TRANSITIONS=193} [2021-12-28 03:09:30,226 INFO L334 CegarLoopForPetriNet]: 166 programPoint places, 29 predicate places. [2021-12-28 03:09:30,226 INFO L470 AbstractCegarLoop]: Abstraction has has 195 places, 193 transitions, 737 flow [2021-12-28 03:09:30,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 154.125) internal successors, (1233), 8 states have internal predecessors, (1233), 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 03:09:30,227 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:09:30,227 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] [2021-12-28 03:09:30,244 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 03:09:30,440 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 03:09:30,440 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-28 03:09:30,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:09:30,441 INFO L85 PathProgramCache]: Analyzing trace with hash -470324748, now seen corresponding path program 4 times [2021-12-28 03:09:30,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:09:30,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548818891] [2021-12-28 03:09:30,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:09:30,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:09:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:09:30,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:09:30,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:09:30,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548818891] [2021-12-28 03:09:30,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548818891] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:09:30,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:09:30,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:09:30,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973756817] [2021-12-28 03:09:30,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:09:30,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:09:30,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:09:30,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:09:30,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:09:30,551 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 185 [2021-12-28 03:09:30,552 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 193 transitions, 737 flow. Second operand has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 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 03:09:30,552 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:09:30,552 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 185 [2021-12-28 03:09:30,552 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:09:30,774 INFO L129 PetriNetUnfolder]: 235/1497 cut-off events. [2021-12-28 03:09:30,774 INFO L130 PetriNetUnfolder]: For 1642/1642 co-relation queries the response was YES. [2021-12-28 03:09:30,778 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2994 conditions, 1497 events. 235/1497 cut-off events. For 1642/1642 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 10177 event pairs, 82 based on Foata normal form. 9/1408 useless extension candidates. Maximal degree in co-relation 2972. Up to 322 conditions per place. [2021-12-28 03:09:30,782 INFO L132 encePairwiseOnDemand]: 177/185 looper letters, 56 selfloop transitions, 21 changer transitions 2/219 dead transitions. [2021-12-28 03:09:30,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 219 transitions, 1039 flow [2021-12-28 03:09:30,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:09:30,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-28 03:09:30,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 959 transitions. [2021-12-28 03:09:30,784 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8639639639639639 [2021-12-28 03:09:30,784 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 959 transitions. [2021-12-28 03:09:30,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 959 transitions. [2021-12-28 03:09:30,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:09:30,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 959 transitions. [2021-12-28 03:09:30,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 159.83333333333334) internal successors, (959), 6 states have internal predecessors, (959), 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 03:09:30,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 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 03:09:30,789 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 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 03:09:30,789 INFO L186 Difference]: Start difference. First operand has 195 places, 193 transitions, 737 flow. Second operand 6 states and 959 transitions. [2021-12-28 03:09:30,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 219 transitions, 1039 flow [2021-12-28 03:09:30,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 219 transitions, 1004 flow, removed 15 selfloop flow, removed 2 redundant places. [2021-12-28 03:09:30,798 INFO L242 Difference]: Finished difference. Result has 202 places, 198 transitions, 831 flow [2021-12-28 03:09:30,799 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=831, PETRI_PLACES=202, PETRI_TRANSITIONS=198} [2021-12-28 03:09:30,800 INFO L334 CegarLoopForPetriNet]: 166 programPoint places, 36 predicate places. [2021-12-28 03:09:30,800 INFO L470 AbstractCegarLoop]: Abstraction has has 202 places, 198 transitions, 831 flow [2021-12-28 03:09:30,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 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 03:09:30,801 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:09:30,801 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] [2021-12-28 03:09:30,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 03:09:30,801 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-28 03:09:30,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:09:30,802 INFO L85 PathProgramCache]: Analyzing trace with hash -498513026, now seen corresponding path program 1 times [2021-12-28 03:09:30,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:09:30,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989612519] [2021-12-28 03:09:30,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:09:30,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:09:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:09:30,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:09:30,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:09:30,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989612519] [2021-12-28 03:09:30,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989612519] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:09:30,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:09:30,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:09:30,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600481418] [2021-12-28 03:09:30,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:09:30,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:09:30,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:09:30,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:09:30,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:09:30,861 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 185 [2021-12-28 03:09:30,862 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 198 transitions, 831 flow. Second operand has 4 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 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 03:09:30,862 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:09:30,862 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 185 [2021-12-28 03:09:30,862 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:09:30,989 INFO L129 PetriNetUnfolder]: 116/1208 cut-off events. [2021-12-28 03:09:30,989 INFO L130 PetriNetUnfolder]: For 1432/1455 co-relation queries the response was YES. [2021-12-28 03:09:30,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2294 conditions, 1208 events. 116/1208 cut-off events. For 1432/1455 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 7349 event pairs, 23 based on Foata normal form. 14/1138 useless extension candidates. Maximal degree in co-relation 2269. Up to 167 conditions per place. [2021-12-28 03:09:30,995 INFO L132 encePairwiseOnDemand]: 180/185 looper letters, 46 selfloop transitions, 11 changer transitions 0/210 dead transitions. [2021-12-28 03:09:30,995 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 210 transitions, 1035 flow [2021-12-28 03:09:30,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 03:09:30,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-12-28 03:09:30,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 658 transitions. [2021-12-28 03:09:30,997 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8891891891891892 [2021-12-28 03:09:30,997 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 658 transitions. [2021-12-28 03:09:30,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 658 transitions. [2021-12-28 03:09:30,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:09:30,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 658 transitions. [2021-12-28 03:09:30,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 164.5) internal successors, (658), 4 states have internal predecessors, (658), 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 03:09:31,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 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 03:09:31,000 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 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 03:09:31,000 INFO L186 Difference]: Start difference. First operand has 202 places, 198 transitions, 831 flow. Second operand 4 states and 658 transitions. [2021-12-28 03:09:31,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 210 transitions, 1035 flow [2021-12-28 03:09:31,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 210 transitions, 993 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-12-28 03:09:31,006 INFO L242 Difference]: Finished difference. Result has 202 places, 202 transitions, 880 flow [2021-12-28 03:09:31,006 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=880, PETRI_PLACES=202, PETRI_TRANSITIONS=202} [2021-12-28 03:09:31,006 INFO L334 CegarLoopForPetriNet]: 166 programPoint places, 36 predicate places. [2021-12-28 03:09:31,007 INFO L470 AbstractCegarLoop]: Abstraction has has 202 places, 202 transitions, 880 flow [2021-12-28 03:09:31,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 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 03:09:31,007 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:09:31,007 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] [2021-12-28 03:09:31,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 03:09:31,007 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-28 03:09:31,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:09:31,008 INFO L85 PathProgramCache]: Analyzing trace with hash -197254562, now seen corresponding path program 2 times [2021-12-28 03:09:31,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:09:31,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083493200] [2021-12-28 03:09:31,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:09:31,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:09:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:09:31,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:09:31,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:09:31,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083493200] [2021-12-28 03:09:31,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083493200] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:09:31,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:09:31,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:09:31,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796652391] [2021-12-28 03:09:31,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:09:31,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:09:31,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:09:31,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:09:31,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:09:31,046 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 185 [2021-12-28 03:09:31,047 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 202 transitions, 880 flow. Second operand has 4 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 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 03:09:31,047 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:09:31,047 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 185 [2021-12-28 03:09:31,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:09:31,170 INFO L129 PetriNetUnfolder]: 107/1005 cut-off events. [2021-12-28 03:09:31,171 INFO L130 PetriNetUnfolder]: For 1275/1307 co-relation queries the response was YES. [2021-12-28 03:09:31,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1975 conditions, 1005 events. 107/1005 cut-off events. For 1275/1307 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5689 event pairs, 18 based on Foata normal form. 19/954 useless extension candidates. Maximal degree in co-relation 1950. Up to 122 conditions per place. [2021-12-28 03:09:31,177 INFO L132 encePairwiseOnDemand]: 179/185 looper letters, 38 selfloop transitions, 16 changer transitions 3/210 dead transitions. [2021-12-28 03:09:31,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 210 transitions, 1036 flow [2021-12-28 03:09:31,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:09:31,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-28 03:09:31,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 814 transitions. [2021-12-28 03:09:31,179 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.88 [2021-12-28 03:09:31,179 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 814 transitions. [2021-12-28 03:09:31,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 814 transitions. [2021-12-28 03:09:31,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:09:31,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 814 transitions. [2021-12-28 03:09:31,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.8) internal successors, (814), 5 states have internal predecessors, (814), 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 03:09:31,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 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 03:09:31,182 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 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 03:09:31,183 INFO L186 Difference]: Start difference. First operand has 202 places, 202 transitions, 880 flow. Second operand 5 states and 814 transitions. [2021-12-28 03:09:31,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 210 transitions, 1036 flow [2021-12-28 03:09:31,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 210 transitions, 1028 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-12-28 03:09:31,189 INFO L242 Difference]: Finished difference. Result has 207 places, 202 transitions, 924 flow [2021-12-28 03:09:31,189 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=924, PETRI_PLACES=207, PETRI_TRANSITIONS=202} [2021-12-28 03:09:31,189 INFO L334 CegarLoopForPetriNet]: 166 programPoint places, 41 predicate places. [2021-12-28 03:09:31,190 INFO L470 AbstractCegarLoop]: Abstraction has has 207 places, 202 transitions, 924 flow [2021-12-28 03:09:31,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 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 03:09:31,190 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:09:31,190 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] [2021-12-28 03:09:31,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 03:09:31,191 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-28 03:09:31,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:09:31,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1055518003, now seen corresponding path program 1 times [2021-12-28 03:09:31,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:09:31,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346716436] [2021-12-28 03:09:31,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:09:31,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:09:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:09:31,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:09:31,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:09:31,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346716436] [2021-12-28 03:09:31,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346716436] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:09:31,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455969864] [2021-12-28 03:09:31,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:09:31,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:09:31,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:09:31,400 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 03:09:31,401 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 03:09:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:09:31,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-28 03:09:31,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:09:32,046 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-12-28 03:09:32,047 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2021-12-28 03:09:32,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:09:32,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:09:32,675 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2021-12-28 03:09:32,676 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2021-12-28 03:09:33,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:09:33,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455969864] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:09:33,365 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:09:33,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 18] total 36 [2021-12-28 03:09:33,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93358973] [2021-12-28 03:09:33,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:09:33,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-28 03:09:33,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:09:33,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-28 03:09:33,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1133, Unknown=0, NotChecked=0, Total=1260 [2021-12-28 03:09:33,369 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 185 [2021-12-28 03:09:33,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 202 transitions, 924 flow. Second operand has 36 states, 36 states have (on average 89.86111111111111) internal successors, (3235), 36 states have internal predecessors, (3235), 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 03:09:33,372 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:09:33,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 185 [2021-12-28 03:09:33,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:09:43,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:09:49,471 INFO L129 PetriNetUnfolder]: 10909/23746 cut-off events. [2021-12-28 03:09:49,471 INFO L130 PetriNetUnfolder]: For 32960/33185 co-relation queries the response was YES. [2021-12-28 03:09:49,549 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58548 conditions, 23746 events. 10909/23746 cut-off events. For 32960/33185 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 214116 event pairs, 465 based on Foata normal form. 480/22910 useless extension candidates. Maximal degree in co-relation 58521. Up to 3683 conditions per place. [2021-12-28 03:09:49,622 INFO L132 encePairwiseOnDemand]: 132/185 looper letters, 821 selfloop transitions, 424 changer transitions 223/1548 dead transitions. [2021-12-28 03:09:49,622 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 1548 transitions, 8997 flow [2021-12-28 03:09:49,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2021-12-28 03:09:49,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2021-12-28 03:09:49,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 14123 transitions. [2021-12-28 03:09:49,641 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5022403982930299 [2021-12-28 03:09:49,642 INFO L72 ComplementDD]: Start complementDD. Operand 152 states and 14123 transitions. [2021-12-28 03:09:49,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 152 states and 14123 transitions. [2021-12-28 03:09:49,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:09:49,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 152 states and 14123 transitions. [2021-12-28 03:09:49,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 153 states, 152 states have (on average 92.91447368421052) internal successors, (14123), 152 states have internal predecessors, (14123), 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 03:09:49,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 153 states, 153 states have (on average 185.0) internal successors, (28305), 153 states have internal predecessors, (28305), 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 03:09:49,708 INFO L81 ComplementDD]: Finished complementDD. Result has 153 states, 153 states have (on average 185.0) internal successors, (28305), 153 states have internal predecessors, (28305), 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 03:09:49,708 INFO L186 Difference]: Start difference. First operand has 207 places, 202 transitions, 924 flow. Second operand 152 states and 14123 transitions. [2021-12-28 03:09:49,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 1548 transitions, 8997 flow [2021-12-28 03:09:49,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 1548 transitions, 8769 flow, removed 20 selfloop flow, removed 4 redundant places. [2021-12-28 03:09:49,764 INFO L242 Difference]: Finished difference. Result has 453 places, 625 transitions, 4876 flow [2021-12-28 03:09:49,764 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=152, PETRI_FLOW=4876, PETRI_PLACES=453, PETRI_TRANSITIONS=625} [2021-12-28 03:09:49,765 INFO L334 CegarLoopForPetriNet]: 166 programPoint places, 287 predicate places. [2021-12-28 03:09:49,765 INFO L470 AbstractCegarLoop]: Abstraction has has 453 places, 625 transitions, 4876 flow [2021-12-28 03:09:49,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 89.86111111111111) internal successors, (3235), 36 states have internal predecessors, (3235), 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 03:09:49,766 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:09:49,766 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:09:49,801 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 03:09:49,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:09:49,983 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-28 03:09:49,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:09:49,984 INFO L85 PathProgramCache]: Analyzing trace with hash -274538286, now seen corresponding path program 2 times [2021-12-28 03:09:49,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:09:49,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290912211] [2021-12-28 03:09:49,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:09:49,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:09:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:09:51,441 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:09:51,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:09:51,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290912211] [2021-12-28 03:09:51,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290912211] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:09:51,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243103221] [2021-12-28 03:09:51,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:09:51,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:09:51,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:09:51,443 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 03:09:51,446 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 03:09:51,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:09:51,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:09:51,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-28 03:09:51,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:09:51,625 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-28 03:09:51,910 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-28 03:09:51,910 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-28 03:09:52,129 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-28 03:09:52,551 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-28 03:09:52,655 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-28 03:09:53,865 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-12-28 03:09:53,865 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2021-12-28 03:09:54,171 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:09:54,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:10:00,175 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-28 03:10:00,175 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 44 [2021-12-28 03:10:00,186 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2021-12-28 03:10:00,186 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 198 treesize of output 173 [2021-12-28 03:10:00,196 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-28 03:10:00,196 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 166 treesize of output 142 [2021-12-28 03:10:00,204 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-28 03:10:00,204 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 94 [2021-12-28 03:10:00,793 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:10:00,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243103221] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:10:00,793 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:10:00,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 29, 27] total 68 [2021-12-28 03:10:00,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436156511] [2021-12-28 03:10:00,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:10:00,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-12-28 03:10:00,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:10:00,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-12-28 03:10:00,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=4056, Unknown=135, NotChecked=0, Total=4556 [2021-12-28 03:10:00,798 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 185 [2021-12-28 03:10:00,800 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 625 transitions, 4876 flow. Second operand has 68 states, 68 states have (on average 57.455882352941174) internal successors, (3907), 68 states have internal predecessors, (3907), 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 03:10:00,800 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:10:00,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 185 [2021-12-28 03:10:00,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand