./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-bad-ring.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 e1611f006d8b4d3ca09ba5acfb7e64e93bdf2d1c3a87f0ab00b1667331afb989 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:05:02,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:05:02,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:05:02,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:05:02,307 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:05:02,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:05:02,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:05:02,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:05:02,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:05:02,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:05:02,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:05:02,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:05:02,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:05:02,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:05:02,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:05:02,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:05:02,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:05:02,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:05:02,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:05:02,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:05:02,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:05:02,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:05:02,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:05:02,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:05:02,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:05:02,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:05:02,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:05:02,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:05:02,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:05:02,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:05:02,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:05:02,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:05:02,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:05:02,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:05:02,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:05:02,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:05:02,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:05:02,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:05:02,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:05:02,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:05:02,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:05:02,338 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 03:05:02,370 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:05:02,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:05:02,372 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:05:02,372 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:05:02,373 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:05:02,373 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:05:02,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:05:02,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:05:02,374 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:05:02,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:05:02,375 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 03:05:02,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:05:02,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 03:05:02,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:05:02,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:05:02,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:05:02,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:05:02,377 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 03:05:02,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:05:02,377 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:05:02,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:05:02,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:05:02,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:05:02,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:05:02,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:05:02,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:05:02,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:05:02,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:05:02,380 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:05:02,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:05:02,380 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:05:02,380 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:05:02,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:05:02,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:05:02,381 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1611f006d8b4d3ca09ba5acfb7e64e93bdf2d1c3a87f0ab00b1667331afb989 [2021-12-16 03:05:02,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:05:02,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:05:02,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:05:02,624 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:05:02,624 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:05:02,625 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2021-12-16 03:05:02,684 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f30f51361/12a9c46cd497489d903c3de25b4a811b/FLAGee7fc1a26 [2021-12-16 03:05:03,037 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:05:03,038 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2021-12-16 03:05:03,046 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f30f51361/12a9c46cd497489d903c3de25b4a811b/FLAGee7fc1a26 [2021-12-16 03:05:03,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f30f51361/12a9c46cd497489d903c3de25b4a811b [2021-12-16 03:05:03,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:05:03,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:05:03,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:05:03,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:05:03,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:05:03,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:05:03" (1/1) ... [2021-12-16 03:05:03,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27137a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:05:03, skipping insertion in model container [2021-12-16 03:05:03,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:05:03" (1/1) ... [2021-12-16 03:05:03,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:05:03,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:05:03,277 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c[3947,3960] [2021-12-16 03:05:03,282 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:05:03,288 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:05:03,309 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c[3947,3960] [2021-12-16 03:05:03,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:05:03,323 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:05:03,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:05:03 WrapperNode [2021-12-16 03:05:03,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:05:03,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:05:03,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:05:03,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:05:03,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:05:03" (1/1) ... [2021-12-16 03:05:03,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:05:03" (1/1) ... [2021-12-16 03:05:03,367 INFO L137 Inliner]: procedures = 25, calls = 61, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 315 [2021-12-16 03:05:03,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:05:03,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:05:03,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:05:03,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:05:03,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:05:03" (1/1) ... [2021-12-16 03:05:03,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:05:03" (1/1) ... [2021-12-16 03:05:03,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:05:03" (1/1) ... [2021-12-16 03:05:03,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:05:03" (1/1) ... [2021-12-16 03:05:03,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:05:03" (1/1) ... [2021-12-16 03:05:03,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:05:03" (1/1) ... [2021-12-16 03:05:03,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:05:03" (1/1) ... [2021-12-16 03:05:03,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:05:03,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:05:03,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:05:03,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:05:03,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:05:03" (1/1) ... [2021-12-16 03:05:03,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:05:03,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:05:03,452 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) [2021-12-16 03:05:03,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:05:03,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:05:03,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:05:03,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:05:03,494 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-16 03:05:03,495 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-16 03:05:03,495 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-16 03:05:03,495 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-16 03:05:03,495 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-16 03:05:03,495 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-16 03:05:03,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:05:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-16 03:05:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-16 03:05:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 03:05:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:05:03,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:05:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:05:03,498 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-16 03:05:03,479 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 [2021-12-16 03:05:03,633 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:05:03,635 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:05:03,952 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:05:04,077 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:05:04,077 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-16 03:05:04,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:05:04 BoogieIcfgContainer [2021-12-16 03:05:04,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:05:04,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:05:04,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:05:04,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:05:04,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:05:03" (1/3) ... [2021-12-16 03:05:04,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15bba1f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:05:04, skipping insertion in model container [2021-12-16 03:05:04,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:05:03" (2/3) ... [2021-12-16 03:05:04,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15bba1f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:05:04, skipping insertion in model container [2021-12-16 03:05:04,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:05:04" (3/3) ... [2021-12-16 03:05:04,088 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2021-12-16 03:05:04,093 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-16 03:05:04,093 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:05:04,093 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:05:04,093 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-16 03:05:04,149 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,150 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,150 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,150 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,150 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,150 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,151 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,151 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,152 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,152 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,152 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,152 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,152 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,152 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,153 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,153 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,154 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,154 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,154 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,155 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,155 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,156 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,156 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,156 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,156 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,156 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,157 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,157 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,157 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,157 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,158 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,158 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,158 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,158 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,159 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,159 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,159 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,159 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,159 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,159 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,160 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,160 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,160 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,160 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,161 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,161 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,161 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,161 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,161 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,161 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,162 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,162 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,162 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,162 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,163 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,163 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,164 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,164 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,164 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,165 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,165 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,165 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,165 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,166 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,166 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,166 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,166 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,167 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,167 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,167 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,167 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,167 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,167 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,168 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,168 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,168 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,169 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,169 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,171 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,172 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,172 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,172 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,174 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,174 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,174 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,175 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,175 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,180 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,180 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,180 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,181 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,181 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,181 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,181 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,181 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,182 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,182 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,185 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,186 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,186 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,186 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,189 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,189 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,189 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,190 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,190 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,190 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,190 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,190 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,190 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,191 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,191 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,191 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,192 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,192 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,192 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,192 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,193 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,193 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,193 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,193 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,193 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,193 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,194 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,194 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,194 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,194 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,194 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,195 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,195 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,195 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,195 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,196 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,196 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,196 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,196 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,196 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,196 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,197 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,197 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,197 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,197 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,201 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,202 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,202 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,202 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,203 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,203 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,203 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,203 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,204 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,205 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,205 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,206 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,206 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,206 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,206 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,207 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,207 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,207 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,207 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,207 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,207 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,208 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,209 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,209 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,209 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,210 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,210 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,210 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,210 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,210 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,211 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,211 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,211 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,211 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,211 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,211 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,212 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:05:04,214 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-12-16 03:05:04,264 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:05:04,273 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 [2021-12-16 03:05:04,273 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-16 03:05:04,290 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 255 places, 267 transitions, 558 flow [2021-12-16 03:05:04,387 INFO L129 PetriNetUnfolder]: 22/264 cut-off events. [2021-12-16 03:05:04,400 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-16 03:05:04,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 264 events. 22/264 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 157 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 224. Up to 3 conditions per place. [2021-12-16 03:05:04,405 INFO L82 GeneralOperation]: Start removeDead. Operand has 255 places, 267 transitions, 558 flow [2021-12-16 03:05:04,410 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 253 transitions, 524 flow [2021-12-16 03:05:04,467 INFO L129 PetriNetUnfolder]: 22/252 cut-off events. [2021-12-16 03:05:04,467 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-16 03:05:04,467 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:05:04,468 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:05:04,469 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:05:04,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:05:04,474 INFO L85 PathProgramCache]: Analyzing trace with hash 956219309, now seen corresponding path program 1 times [2021-12-16 03:05:04,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:05:04,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803273716] [2021-12-16 03:05:04,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:05:04,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:05:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:05:04,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:05:04,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:05:04,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803273716] [2021-12-16 03:05:04,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803273716] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:05:04,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:05:04,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 03:05:04,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004806469] [2021-12-16 03:05:04,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:05:04,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 03:05:04,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:05:04,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 03:05:04,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 03:05:04,830 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 267 [2021-12-16 03:05:04,837 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 253 transitions, 524 flow. Second operand has 2 states, 2 states have (on average 243.0) internal successors, (486), 2 states have internal predecessors, (486), 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) [2021-12-16 03:05:04,837 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:05:04,837 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 267 [2021-12-16 03:05:04,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:05:05,017 INFO L129 PetriNetUnfolder]: 137/624 cut-off events. [2021-12-16 03:05:05,017 INFO L130 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2021-12-16 03:05:05,022 INFO L84 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 624 events. 137/624 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2446 event pairs, 74 based on Foata normal form. 97/655 useless extension candidates. Maximal degree in co-relation 622. Up to 197 conditions per place. [2021-12-16 03:05:05,026 INFO L132 encePairwiseOnDemand]: 251/267 looper letters, 13 selfloop transitions, 0 changer transitions 8/237 dead transitions. [2021-12-16 03:05:05,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 237 transitions, 518 flow [2021-12-16 03:05:05,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 03:05:05,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-16 03:05:05,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 503 transitions. [2021-12-16 03:05:05,038 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9419475655430711 [2021-12-16 03:05:05,039 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 503 transitions. [2021-12-16 03:05:05,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 503 transitions. [2021-12-16 03:05:05,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:05:05,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 503 transitions. [2021-12-16 03:05:05,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 251.5) internal successors, (503), 2 states have internal predecessors, (503), 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) [2021-12-16 03:05:05,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 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) [2021-12-16 03:05:05,052 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 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) [2021-12-16 03:05:05,053 INFO L186 Difference]: Start difference. First operand has 241 places, 253 transitions, 524 flow. Second operand 2 states and 503 transitions. [2021-12-16 03:05:05,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 237 transitions, 518 flow [2021-12-16 03:05:05,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 237 transitions, 506 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-16 03:05:05,061 INFO L242 Difference]: Finished difference. Result has 236 places, 229 transitions, 464 flow [2021-12-16 03:05:05,063 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=464, PETRI_PLACES=236, PETRI_TRANSITIONS=229} [2021-12-16 03:05:05,066 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, -5 predicate places. [2021-12-16 03:05:05,066 INFO L470 AbstractCegarLoop]: Abstraction has has 236 places, 229 transitions, 464 flow [2021-12-16 03:05:05,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 243.0) internal successors, (486), 2 states have internal predecessors, (486), 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) [2021-12-16 03:05:05,067 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:05:05,067 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:05:05,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:05:05,068 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:05:05,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:05:05,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1907627099, now seen corresponding path program 1 times [2021-12-16 03:05:05,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:05:05,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051126058] [2021-12-16 03:05:05,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:05:05,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:05:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:05:05,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:05:05,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:05:05,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051126058] [2021-12-16 03:05:05,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051126058] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:05:05,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:05:05,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:05:05,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784776718] [2021-12-16 03:05:05,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:05:05,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:05:05,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:05:05,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:05:05,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:05:05,325 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 267 [2021-12-16 03:05:05,326 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 229 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 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) [2021-12-16 03:05:05,326 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:05:05,326 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 267 [2021-12-16 03:05:05,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:05:05,439 INFO L129 PetriNetUnfolder]: 125/535 cut-off events. [2021-12-16 03:05:05,440 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-12-16 03:05:05,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 748 conditions, 535 events. 125/535 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1784 event pairs, 29 based on Foata normal form. 10/511 useless extension candidates. Maximal degree in co-relation 745. Up to 142 conditions per place. [2021-12-16 03:05:05,446 INFO L132 encePairwiseOnDemand]: 264/267 looper letters, 22 selfloop transitions, 2 changer transitions 0/236 dead transitions. [2021-12-16 03:05:05,446 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 236 transitions, 528 flow [2021-12-16 03:05:05,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:05:05,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-16 03:05:05,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 724 transitions. [2021-12-16 03:05:05,450 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9038701622971286 [2021-12-16 03:05:05,451 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 724 transitions. [2021-12-16 03:05:05,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 724 transitions. [2021-12-16 03:05:05,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:05:05,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 724 transitions. [2021-12-16 03:05:05,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.33333333333334) internal successors, (724), 3 states have internal predecessors, (724), 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) [2021-12-16 03:05:05,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 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) [2021-12-16 03:05:05,478 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 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) [2021-12-16 03:05:05,479 INFO L186 Difference]: Start difference. First operand has 236 places, 229 transitions, 464 flow. Second operand 3 states and 724 transitions. [2021-12-16 03:05:05,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 236 transitions, 528 flow [2021-12-16 03:05:05,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 236 transitions, 528 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-16 03:05:05,489 INFO L242 Difference]: Finished difference. Result has 231 places, 230 transitions, 476 flow [2021-12-16 03:05:05,490 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=231, PETRI_TRANSITIONS=230} [2021-12-16 03:05:05,490 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, -10 predicate places. [2021-12-16 03:05:05,491 INFO L470 AbstractCegarLoop]: Abstraction has has 231 places, 230 transitions, 476 flow [2021-12-16 03:05:05,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 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) [2021-12-16 03:05:05,491 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:05:05,492 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:05:05,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 03:05:05,492 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:05:05,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:05:05,493 INFO L85 PathProgramCache]: Analyzing trace with hash -104740663, now seen corresponding path program 2 times [2021-12-16 03:05:05,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:05:05,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903913660] [2021-12-16 03:05:05,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:05:05,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:05:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:05:05,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:05:05,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:05:05,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903913660] [2021-12-16 03:05:05,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903913660] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:05:05,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:05:05,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:05:05,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299742836] [2021-12-16 03:05:05,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:05:05,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:05:05,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:05:05,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:05:05,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:05:05,717 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 267 [2021-12-16 03:05:05,719 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 230 transitions, 476 flow. Second operand has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 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) [2021-12-16 03:05:05,719 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:05:05,719 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 267 [2021-12-16 03:05:05,719 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:05:05,947 INFO L129 PetriNetUnfolder]: 245/858 cut-off events. [2021-12-16 03:05:05,947 INFO L130 PetriNetUnfolder]: For 105/105 co-relation queries the response was YES. [2021-12-16 03:05:05,950 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 858 events. 245/858 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4076 event pairs, 84 based on Foata normal form. 1/807 useless extension candidates. Maximal degree in co-relation 1454. Up to 226 conditions per place. [2021-12-16 03:05:05,954 INFO L132 encePairwiseOnDemand]: 262/267 looper letters, 57 selfloop transitions, 2 changer transitions 7/247 dead transitions. [2021-12-16 03:05:05,954 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 247 transitions, 654 flow [2021-12-16 03:05:05,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:05:05,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:05:05,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1035 transitions. [2021-12-16 03:05:05,957 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7752808988764045 [2021-12-16 03:05:05,957 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1035 transitions. [2021-12-16 03:05:05,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1035 transitions. [2021-12-16 03:05:05,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:05:05,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1035 transitions. [2021-12-16 03:05:05,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 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) [2021-12-16 03:05:05,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 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) [2021-12-16 03:05:05,966 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 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) [2021-12-16 03:05:05,967 INFO L186 Difference]: Start difference. First operand has 231 places, 230 transitions, 476 flow. Second operand 5 states and 1035 transitions. [2021-12-16 03:05:05,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 247 transitions, 654 flow [2021-12-16 03:05:05,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 247 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-16 03:05:05,972 INFO L242 Difference]: Finished difference. Result has 237 places, 231 transitions, 490 flow [2021-12-16 03:05:05,973 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=490, PETRI_PLACES=237, PETRI_TRANSITIONS=231} [2021-12-16 03:05:05,975 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, -4 predicate places. [2021-12-16 03:05:05,975 INFO L470 AbstractCegarLoop]: Abstraction has has 237 places, 231 transitions, 490 flow [2021-12-16 03:05:05,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 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) [2021-12-16 03:05:05,976 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:05:05,976 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:05:05,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 03:05:05,977 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:05:05,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:05:05,977 INFO L85 PathProgramCache]: Analyzing trace with hash -577078233, now seen corresponding path program 1 times [2021-12-16 03:05:05,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:05:05,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534680979] [2021-12-16 03:05:05,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:05:05,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:05:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:05:06,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:05:06,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:05:06,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534680979] [2021-12-16 03:05:06,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534680979] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:05:06,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:05:06,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:05:06,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428174375] [2021-12-16 03:05:06,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:05:06,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:05:06,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:05:06,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:05:06,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:05:06,189 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 267 [2021-12-16 03:05:06,191 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 231 transitions, 490 flow. Second operand has 6 states, 6 states have (on average 205.5) internal successors, (1233), 6 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) [2021-12-16 03:05:06,192 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:05:06,192 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 267 [2021-12-16 03:05:06,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:05:06,449 INFO L129 PetriNetUnfolder]: 192/892 cut-off events. [2021-12-16 03:05:06,450 INFO L130 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2021-12-16 03:05:06,453 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1415 conditions, 892 events. 192/892 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3879 event pairs, 129 based on Foata normal form. 8/841 useless extension candidates. Maximal degree in co-relation 1407. Up to 323 conditions per place. [2021-12-16 03:05:06,456 INFO L132 encePairwiseOnDemand]: 255/267 looper letters, 48 selfloop transitions, 8 changer transitions 28/263 dead transitions. [2021-12-16 03:05:06,457 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 263 transitions, 725 flow [2021-12-16 03:05:06,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 03:05:06,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-16 03:05:06,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1877 transitions. [2021-12-16 03:05:06,461 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7811069496462755 [2021-12-16 03:05:06,461 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1877 transitions. [2021-12-16 03:05:06,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1877 transitions. [2021-12-16 03:05:06,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:05:06,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1877 transitions. [2021-12-16 03:05:06,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 208.55555555555554) internal successors, (1877), 9 states have internal predecessors, (1877), 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) [2021-12-16 03:05:06,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 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) [2021-12-16 03:05:06,472 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 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) [2021-12-16 03:05:06,472 INFO L186 Difference]: Start difference. First operand has 237 places, 231 transitions, 490 flow. Second operand 9 states and 1877 transitions. [2021-12-16 03:05:06,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 263 transitions, 725 flow [2021-12-16 03:05:06,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 263 transitions, 719 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-12-16 03:05:06,479 INFO L242 Difference]: Finished difference. Result has 242 places, 232 transitions, 516 flow [2021-12-16 03:05:06,480 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=516, PETRI_PLACES=242, PETRI_TRANSITIONS=232} [2021-12-16 03:05:06,481 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, 1 predicate places. [2021-12-16 03:05:06,481 INFO L470 AbstractCegarLoop]: Abstraction has has 242 places, 232 transitions, 516 flow [2021-12-16 03:05:06,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 205.5) internal successors, (1233), 6 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) [2021-12-16 03:05:06,482 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:05:06,483 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:05:06,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 03:05:06,483 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:05:06,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:05:06,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1049427217, now seen corresponding path program 1 times [2021-12-16 03:05:06,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:05:06,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404263307] [2021-12-16 03:05:06,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:05:06,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:05:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:05:06,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 03:05:06,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:05:06,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404263307] [2021-12-16 03:05:06,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404263307] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:05:06,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:05:06,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:05:06,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217625832] [2021-12-16 03:05:06,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:05:06,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:05:06,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:05:06,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:05:06,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:05:06,601 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 267 [2021-12-16 03:05:06,602 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 232 transitions, 516 flow. Second operand has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 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) [2021-12-16 03:05:06,609 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:05:06,610 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 267 [2021-12-16 03:05:06,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:05:06,712 INFO L129 PetriNetUnfolder]: 138/574 cut-off events. [2021-12-16 03:05:06,713 INFO L130 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2021-12-16 03:05:06,715 INFO L84 FinitePrefix]: Finished finitePrefix Result has 978 conditions, 574 events. 138/574 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1960 event pairs, 50 based on Foata normal form. 11/555 useless extension candidates. Maximal degree in co-relation 970. Up to 127 conditions per place. [2021-12-16 03:05:06,718 INFO L132 encePairwiseOnDemand]: 264/267 looper letters, 21 selfloop transitions, 2 changer transitions 3/240 dead transitions. [2021-12-16 03:05:06,718 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 240 transitions, 596 flow [2021-12-16 03:05:06,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:05:06,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-16 03:05:06,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 725 transitions. [2021-12-16 03:05:06,720 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9051186017478152 [2021-12-16 03:05:06,720 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 725 transitions. [2021-12-16 03:05:06,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 725 transitions. [2021-12-16 03:05:06,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:05:06,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 725 transitions. [2021-12-16 03:05:06,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 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) [2021-12-16 03:05:06,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 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) [2021-12-16 03:05:06,726 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 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) [2021-12-16 03:05:06,726 INFO L186 Difference]: Start difference. First operand has 242 places, 232 transitions, 516 flow. Second operand 3 states and 725 transitions. [2021-12-16 03:05:06,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 240 transitions, 596 flow [2021-12-16 03:05:06,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 240 transitions, 582 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-12-16 03:05:06,731 INFO L242 Difference]: Finished difference. Result has 238 places, 233 transitions, 514 flow [2021-12-16 03:05:06,732 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=514, PETRI_PLACES=238, PETRI_TRANSITIONS=233} [2021-12-16 03:05:06,734 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, -3 predicate places. [2021-12-16 03:05:06,734 INFO L470 AbstractCegarLoop]: Abstraction has has 238 places, 233 transitions, 514 flow [2021-12-16 03:05:06,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 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) [2021-12-16 03:05:06,734 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:05:06,735 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:05:06,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 03:05:06,735 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:05:06,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:05:06,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1829992027, now seen corresponding path program 2 times [2021-12-16 03:05:06,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:05:06,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765710962] [2021-12-16 03:05:06,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:05:06,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:05:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:05:06,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 03:05:06,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:05:06,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765710962] [2021-12-16 03:05:06,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765710962] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:05:06,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:05:06,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 03:05:06,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477300517] [2021-12-16 03:05:06,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:05:06,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:05:06,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:05:06,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:05:06,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:05:06,898 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 267 [2021-12-16 03:05:06,899 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 233 transitions, 514 flow. Second operand has 7 states, 7 states have (on average 201.71428571428572) internal successors, (1412), 7 states have internal predecessors, (1412), 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) [2021-12-16 03:05:06,899 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:05:06,900 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 267 [2021-12-16 03:05:06,900 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:05:07,137 INFO L129 PetriNetUnfolder]: 188/776 cut-off events. [2021-12-16 03:05:07,138 INFO L130 PetriNetUnfolder]: For 181/181 co-relation queries the response was YES. [2021-12-16 03:05:07,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1446 conditions, 776 events. 188/776 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3209 event pairs, 89 based on Foata normal form. 9/741 useless extension candidates. Maximal degree in co-relation 1437. Up to 134 conditions per place. [2021-12-16 03:05:07,143 INFO L132 encePairwiseOnDemand]: 257/267 looper letters, 57 selfloop transitions, 9 changer transitions 17/258 dead transitions. [2021-12-16 03:05:07,143 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 258 transitions, 762 flow [2021-12-16 03:05:07,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 03:05:07,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-16 03:05:07,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1836 transitions. [2021-12-16 03:05:07,148 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7640449438202247 [2021-12-16 03:05:07,148 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1836 transitions. [2021-12-16 03:05:07,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1836 transitions. [2021-12-16 03:05:07,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:05:07,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1836 transitions. [2021-12-16 03:05:07,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 204.0) internal successors, (1836), 9 states have internal predecessors, (1836), 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) [2021-12-16 03:05:07,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 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) [2021-12-16 03:05:07,159 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 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) [2021-12-16 03:05:07,160 INFO L186 Difference]: Start difference. First operand has 238 places, 233 transitions, 514 flow. Second operand 9 states and 1836 transitions. [2021-12-16 03:05:07,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 258 transitions, 762 flow [2021-12-16 03:05:07,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 258 transitions, 759 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-16 03:05:07,167 INFO L242 Difference]: Finished difference. Result has 246 places, 234 transitions, 538 flow [2021-12-16 03:05:07,167 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=538, PETRI_PLACES=246, PETRI_TRANSITIONS=234} [2021-12-16 03:05:07,170 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, 5 predicate places. [2021-12-16 03:05:07,170 INFO L470 AbstractCegarLoop]: Abstraction has has 246 places, 234 transitions, 538 flow [2021-12-16 03:05:07,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 201.71428571428572) internal successors, (1412), 7 states have internal predecessors, (1412), 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) [2021-12-16 03:05:07,171 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:05:07,171 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:05:07,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 03:05:07,171 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:05:07,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:05:07,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1224546333, now seen corresponding path program 1 times [2021-12-16 03:05:07,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:05:07,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469110438] [2021-12-16 03:05:07,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:05:07,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:05:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:05:07,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:05:07,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:05:07,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469110438] [2021-12-16 03:05:07,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469110438] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:05:07,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:05:07,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:05:07,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898962113] [2021-12-16 03:05:07,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:05:07,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:05:07,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:05:07,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:05:07,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:05:07,326 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 267 [2021-12-16 03:05:07,328 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 234 transitions, 538 flow. Second operand has 6 states, 6 states have (on average 206.83333333333334) internal successors, (1241), 6 states have internal predecessors, (1241), 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) [2021-12-16 03:05:07,328 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:05:07,328 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 267 [2021-12-16 03:05:07,328 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:05:07,565 INFO L129 PetriNetUnfolder]: 151/716 cut-off events. [2021-12-16 03:05:07,565 INFO L130 PetriNetUnfolder]: For 166/166 co-relation queries the response was YES. [2021-12-16 03:05:07,568 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 716 events. 151/716 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2510 event pairs, 94 based on Foata normal form. 7/686 useless extension candidates. Maximal degree in co-relation 1292. Up to 247 conditions per place. [2021-12-16 03:05:07,570 INFO L132 encePairwiseOnDemand]: 257/267 looper letters, 51 selfloop transitions, 8 changer transitions 21/259 dead transitions. [2021-12-16 03:05:07,570 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 259 transitions, 772 flow [2021-12-16 03:05:07,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 03:05:07,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-16 03:05:07,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1867 transitions. [2021-12-16 03:05:07,574 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7769454848106534 [2021-12-16 03:05:07,575 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1867 transitions. [2021-12-16 03:05:07,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1867 transitions. [2021-12-16 03:05:07,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:05:07,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1867 transitions. [2021-12-16 03:05:07,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 207.44444444444446) internal successors, (1867), 9 states have internal predecessors, (1867), 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) [2021-12-16 03:05:07,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 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) [2021-12-16 03:05:07,584 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 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) [2021-12-16 03:05:07,584 INFO L186 Difference]: Start difference. First operand has 246 places, 234 transitions, 538 flow. Second operand 9 states and 1867 transitions. [2021-12-16 03:05:07,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 259 transitions, 772 flow [2021-12-16 03:05:07,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 259 transitions, 750 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-16 03:05:07,590 INFO L242 Difference]: Finished difference. Result has 249 places, 235 transitions, 550 flow [2021-12-16 03:05:07,590 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=550, PETRI_PLACES=249, PETRI_TRANSITIONS=235} [2021-12-16 03:05:07,591 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, 8 predicate places. [2021-12-16 03:05:07,591 INFO L470 AbstractCegarLoop]: Abstraction has has 249 places, 235 transitions, 550 flow [2021-12-16 03:05:07,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 206.83333333333334) internal successors, (1241), 6 states have internal predecessors, (1241), 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) [2021-12-16 03:05:07,592 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:05:07,592 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:05:07,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 03:05:07,593 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:05:07,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:05:07,593 INFO L85 PathProgramCache]: Analyzing trace with hash 65111761, now seen corresponding path program 1 times [2021-12-16 03:05:07,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:05:07,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812196851] [2021-12-16 03:05:07,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:05:07,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:05:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:05:07,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:05:07,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:05:07,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812196851] [2021-12-16 03:05:07,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812196851] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:05:07,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619171596] [2021-12-16 03:05:07,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:05:07,784 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:05:07,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:05:07,786 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) [2021-12-16 03:05:07,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 03:05:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:05:07,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-16 03:05:07,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:05:08,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:05:08,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:05:08,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2021-12-16 03:05:09,521 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:05:09,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619171596] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:05:09,521 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 03:05:09,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2021-12-16 03:05:09,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216947682] [2021-12-16 03:05:09,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 03:05:09,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-16 03:05:09,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:05:09,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-16 03:05:09,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2021-12-16 03:05:09,528 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 267 [2021-12-16 03:05:09,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 235 transitions, 550 flow. Second operand has 25 states, 25 states have (on average 196.0) internal successors, (4900), 25 states have internal predecessors, (4900), 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) [2021-12-16 03:05:09,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:05:09,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 267 [2021-12-16 03:05:09,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:05:10,094 INFO L129 PetriNetUnfolder]: 189/997 cut-off events. [2021-12-16 03:05:10,094 INFO L130 PetriNetUnfolder]: For 261/262 co-relation queries the response was YES. [2021-12-16 03:05:10,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1793 conditions, 997 events. 189/997 cut-off events. For 261/262 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4580 event pairs, 72 based on Foata normal form. 56/1002 useless extension candidates. Maximal degree in co-relation 1781. Up to 187 conditions per place. [2021-12-16 03:05:10,100 INFO L132 encePairwiseOnDemand]: 246/267 looper letters, 52 selfloop transitions, 22 changer transitions 61/307 dead transitions. [2021-12-16 03:05:10,101 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 307 transitions, 1051 flow [2021-12-16 03:05:10,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-16 03:05:10,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-16 03:05:10,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4161 transitions. [2021-12-16 03:05:10,109 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7421080791867308 [2021-12-16 03:05:10,110 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4161 transitions. [2021-12-16 03:05:10,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4161 transitions. [2021-12-16 03:05:10,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:05:10,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4161 transitions. [2021-12-16 03:05:10,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 198.14285714285714) internal successors, (4161), 21 states have internal predecessors, (4161), 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) [2021-12-16 03:05:10,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 267.0) internal successors, (5874), 22 states have internal predecessors, (5874), 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) [2021-12-16 03:05:10,143 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 267.0) internal successors, (5874), 22 states have internal predecessors, (5874), 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) [2021-12-16 03:05:10,144 INFO L186 Difference]: Start difference. First operand has 249 places, 235 transitions, 550 flow. Second operand 21 states and 4161 transitions. [2021-12-16 03:05:10,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 307 transitions, 1051 flow [2021-12-16 03:05:10,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 307 transitions, 1019 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-12-16 03:05:10,151 INFO L242 Difference]: Finished difference. Result has 270 places, 240 transitions, 636 flow [2021-12-16 03:05:10,152 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=636, PETRI_PLACES=270, PETRI_TRANSITIONS=240} [2021-12-16 03:05:10,154 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, 29 predicate places. [2021-12-16 03:05:10,154 INFO L470 AbstractCegarLoop]: Abstraction has has 270 places, 240 transitions, 636 flow [2021-12-16 03:05:10,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 196.0) internal successors, (4900), 25 states have internal predecessors, (4900), 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) [2021-12-16 03:05:10,156 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:05:10,157 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:05:10,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 03:05:10,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:05:10,367 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:05:10,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:05:10,367 INFO L85 PathProgramCache]: Analyzing trace with hash 638310353, now seen corresponding path program 2 times [2021-12-16 03:05:10,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:05:10,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922952502] [2021-12-16 03:05:10,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:05:10,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:05:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:05:10,675 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-16 03:05:10,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:05:10,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922952502] [2021-12-16 03:05:10,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922952502] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:05:10,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905818312] [2021-12-16 03:05:10,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:05:10,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:05:10,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:05:10,678 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) [2021-12-16 03:05:10,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 03:05:10,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 03:05:10,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:05:10,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-16 03:05:10,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:05:10,918 INFO L388 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 [2021-12-16 03:05:10,945 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-16 03:05:10,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 12 treesize of output 14 [2021-12-16 03:05:11,154 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-16 03:05:11,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2021-12-16 03:05:12,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-16 03:05:12,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-16 03:05:13,280 INFO L354 Elim1Store]: treesize reduction 46, result has 6.1 percent of original size [2021-12-16 03:05:13,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 13 [2021-12-16 03:05:13,335 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:05:13,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:05:14,116 INFO L354 Elim1Store]: treesize reduction 37, result has 24.5 percent of original size [2021-12-16 03:05:14,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 152 treesize of output 140 [2021-12-16 03:05:14,131 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-16 03:05:14,131 INFO L388 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 124 treesize of output 100 [2021-12-16 03:05:14,149 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-16 03:05:14,149 INFO L388 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 79 treesize of output 67 [2021-12-16 03:05:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:05:16,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905818312] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:05:16,795 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 03:05:16,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 23, 23] total 56 [2021-12-16 03:05:16,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857485716] [2021-12-16 03:05:16,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 03:05:16,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-12-16 03:05:16,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:05:16,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-12-16 03:05:16,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2851, Unknown=0, NotChecked=0, Total=3080 [2021-12-16 03:05:16,804 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 267 [2021-12-16 03:05:16,810 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 240 transitions, 636 flow. Second operand has 56 states, 56 states have (on average 153.73214285714286) internal successors, (8609), 56 states have internal predecessors, (8609), 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) [2021-12-16 03:05:16,810 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:05:16,810 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 267 [2021-12-16 03:05:16,810 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:05:20,400 INFO L129 PetriNetUnfolder]: 1067/2865 cut-off events. [2021-12-16 03:05:20,400 INFO L130 PetriNetUnfolder]: For 4034/4143 co-relation queries the response was YES. [2021-12-16 03:05:20,410 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6825 conditions, 2865 events. 1067/2865 cut-off events. For 4034/4143 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 18092 event pairs, 52 based on Foata normal form. 1/2675 useless extension candidates. Maximal degree in co-relation 6805. Up to 688 conditions per place. [2021-12-16 03:05:20,423 INFO L132 encePairwiseOnDemand]: 213/267 looper letters, 170 selfloop transitions, 144 changer transitions 0/448 dead transitions. [2021-12-16 03:05:20,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 448 transitions, 2070 flow [2021-12-16 03:05:20,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-12-16 03:05:20,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-12-16 03:05:20,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 9243 transitions. [2021-12-16 03:05:20,444 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5769662921348314 [2021-12-16 03:05:20,444 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 9243 transitions. [2021-12-16 03:05:20,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 9243 transitions. [2021-12-16 03:05:20,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:05:20,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 9243 transitions. [2021-12-16 03:05:20,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 154.05) internal successors, (9243), 60 states have internal predecessors, (9243), 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) [2021-12-16 03:05:20,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 267.0) internal successors, (16287), 61 states have internal predecessors, (16287), 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) [2021-12-16 03:05:20,490 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 267.0) internal successors, (16287), 61 states have internal predecessors, (16287), 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) [2021-12-16 03:05:20,490 INFO L186 Difference]: Start difference. First operand has 270 places, 240 transitions, 636 flow. Second operand 60 states and 9243 transitions. [2021-12-16 03:05:20,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 448 transitions, 2070 flow [2021-12-16 03:05:20,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 448 transitions, 1875 flow, removed 76 selfloop flow, removed 10 redundant places. [2021-12-16 03:05:20,504 INFO L242 Difference]: Finished difference. Result has 327 places, 366 transitions, 1593 flow [2021-12-16 03:05:20,504 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=1593, PETRI_PLACES=327, PETRI_TRANSITIONS=366} [2021-12-16 03:05:20,505 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, 86 predicate places. [2021-12-16 03:05:20,505 INFO L470 AbstractCegarLoop]: Abstraction has has 327 places, 366 transitions, 1593 flow [2021-12-16 03:05:20,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 153.73214285714286) internal successors, (8609), 56 states have internal predecessors, (8609), 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) [2021-12-16 03:05:20,507 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:05:20,508 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:05:20,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 03:05:20,719 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,SelfDestructingSolverStorable8 [2021-12-16 03:05:20,720 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:05:20,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:05:20,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1985153085, now seen corresponding path program 3 times [2021-12-16 03:05:20,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:05:20,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397928476] [2021-12-16 03:05:20,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:05:20,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:05:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:05:21,182 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:05:21,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:05:21,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397928476] [2021-12-16 03:05:21,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397928476] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:05:21,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301040783] [2021-12-16 03:05:21,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 03:05:21,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:05:21,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:05:21,186 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) [2021-12-16 03:05:21,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 03:05:21,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-16 03:05:21,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:05:21,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-16 03:05:21,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:05:21,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-12-16 03:05:21,718 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-16 03:05:21,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:05:21,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301040783] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:05:21,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:05:21,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [20] total 23 [2021-12-16 03:05:21,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319222019] [2021-12-16 03:05:21,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:05:21,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:05:21,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:05:21,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:05:21,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2021-12-16 03:05:21,721 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 267 [2021-12-16 03:05:21,723 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 366 transitions, 1593 flow. Second operand has 5 states, 5 states have (on average 222.6) internal successors, (1113), 5 states have internal predecessors, (1113), 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) [2021-12-16 03:05:21,723 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:05:21,723 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 267 [2021-12-16 03:05:21,723 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:05:22,578 INFO L129 PetriNetUnfolder]: 1773/4400 cut-off events. [2021-12-16 03:05:22,579 INFO L130 PetriNetUnfolder]: For 10242/11019 co-relation queries the response was YES. [2021-12-16 03:05:22,595 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13821 conditions, 4400 events. 1773/4400 cut-off events. For 10242/11019 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 31571 event pairs, 158 based on Foata normal form. 69/4227 useless extension candidates. Maximal degree in co-relation 13790. Up to 1606 conditions per place. [2021-12-16 03:05:22,617 INFO L132 encePairwiseOnDemand]: 261/267 looper letters, 199 selfloop transitions, 22 changer transitions 0/451 dead transitions. [2021-12-16 03:05:22,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 451 transitions, 2628 flow [2021-12-16 03:05:22,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:05:22,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:05:22,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1142 transitions. [2021-12-16 03:05:22,619 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8554307116104869 [2021-12-16 03:05:22,619 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1142 transitions. [2021-12-16 03:05:22,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1142 transitions. [2021-12-16 03:05:22,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:05:22,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1142 transitions. [2021-12-16 03:05:22,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 228.4) internal successors, (1142), 5 states have internal predecessors, (1142), 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) [2021-12-16 03:05:22,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 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) [2021-12-16 03:05:22,623 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 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) [2021-12-16 03:05:22,623 INFO L186 Difference]: Start difference. First operand has 327 places, 366 transitions, 1593 flow. Second operand 5 states and 1142 transitions. [2021-12-16 03:05:22,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 451 transitions, 2628 flow [2021-12-16 03:05:22,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 451 transitions, 2452 flow, removed 65 selfloop flow, removed 17 redundant places. [2021-12-16 03:05:22,667 INFO L242 Difference]: Finished difference. Result has 316 places, 378 transitions, 1645 flow [2021-12-16 03:05:22,667 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=1469, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1645, PETRI_PLACES=316, PETRI_TRANSITIONS=378} [2021-12-16 03:05:22,668 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, 75 predicate places. [2021-12-16 03:05:22,668 INFO L470 AbstractCegarLoop]: Abstraction has has 316 places, 378 transitions, 1645 flow [2021-12-16 03:05:22,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 222.6) internal successors, (1113), 5 states have internal predecessors, (1113), 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) [2021-12-16 03:05:22,669 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:05:22,669 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:05:22,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 03:05:22,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:05:22,890 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:05:22,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:05:22,891 INFO L85 PathProgramCache]: Analyzing trace with hash 898831457, now seen corresponding path program 4 times [2021-12-16 03:05:22,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:05:22,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941719554] [2021-12-16 03:05:22,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:05:22,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:05:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:05:23,510 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:05:23,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:05:23,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941719554] [2021-12-16 03:05:23,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941719554] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:05:23,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601473536] [2021-12-16 03:05:23,510 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 03:05:23,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:05:23,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:05:23,512 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) [2021-12-16 03:05:23,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 03:05:23,665 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 03:05:23,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:05:23,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-16 03:05:23,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:05:23,707 INFO L388 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 [2021-12-16 03:05:23,842 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-16 03:05:23,842 INFO L388 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 [2021-12-16 03:05:24,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2021-12-16 03:05:25,017 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-12-16 03:05:25,017 INFO L388 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 36 treesize of output 10 [2021-12-16 03:05:25,064 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:05:25,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:05:25,472 INFO L354 Elim1Store]: treesize reduction 39, result has 23.5 percent of original size [2021-12-16 03:05:25,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 63 [2021-12-16 03:05:25,477 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-12-16 03:05:25,479 INFO L388 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 39 treesize of output 26 [2021-12-16 03:05:26,733 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:05:26,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601473536] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:05:26,733 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 03:05:26,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 60 [2021-12-16 03:05:26,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846153585] [2021-12-16 03:05:26,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 03:05:26,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-12-16 03:05:26,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:05:26,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-12-16 03:05:26,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=3229, Unknown=0, NotChecked=0, Total=3540 [2021-12-16 03:05:26,741 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 267 [2021-12-16 03:05:26,747 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 378 transitions, 1645 flow. Second operand has 60 states, 60 states have (on average 154.46666666666667) internal successors, (9268), 60 states have internal predecessors, (9268), 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) [2021-12-16 03:05:26,747 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:05:26,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 267 [2021-12-16 03:05:26,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:05:41,044 INFO L129 PetriNetUnfolder]: 11249/26917 cut-off events. [2021-12-16 03:05:41,044 INFO L130 PetriNetUnfolder]: For 71091/73985 co-relation queries the response was YES. [2021-12-16 03:05:41,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84990 conditions, 26917 events. 11249/26917 cut-off events. For 71091/73985 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 274385 event pairs, 713 based on Foata normal form. 686/26045 useless extension candidates. Maximal degree in co-relation 84956. Up to 6838 conditions per place. [2021-12-16 03:05:41,472 INFO L132 encePairwiseOnDemand]: 213/267 looper letters, 1306 selfloop transitions, 455 changer transitions 0/1895 dead transitions. [2021-12-16 03:05:41,472 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 1895 transitions, 14965 flow [2021-12-16 03:05:41,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2021-12-16 03:05:41,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2021-12-16 03:05:41,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 19047 transitions. [2021-12-16 03:05:41,499 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5895626334850033 [2021-12-16 03:05:41,500 INFO L72 ComplementDD]: Start complementDD. Operand 121 states and 19047 transitions. [2021-12-16 03:05:41,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 19047 transitions. [2021-12-16 03:05:41,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:05:41,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 121 states and 19047 transitions. [2021-12-16 03:05:41,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 122 states, 121 states have (on average 157.41322314049586) internal successors, (19047), 121 states have internal predecessors, (19047), 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) [2021-12-16 03:05:41,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 122 states, 122 states have (on average 267.0) internal successors, (32574), 122 states have internal predecessors, (32574), 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) [2021-12-16 03:05:41,592 INFO L81 ComplementDD]: Finished complementDD. Result has 122 states, 122 states have (on average 267.0) internal successors, (32574), 122 states have internal predecessors, (32574), 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) [2021-12-16 03:05:41,592 INFO L186 Difference]: Start difference. First operand has 316 places, 378 transitions, 1645 flow. Second operand 121 states and 19047 transitions. [2021-12-16 03:05:41,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 1895 transitions, 14965 flow [2021-12-16 03:05:41,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 1895 transitions, 14945 flow, removed 6 selfloop flow, removed 1 redundant places. [2021-12-16 03:05:41,899 INFO L242 Difference]: Finished difference. Result has 487 places, 786 transitions, 6998 flow [2021-12-16 03:05:41,899 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=1635, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=121, PETRI_FLOW=6998, PETRI_PLACES=487, PETRI_TRANSITIONS=786} [2021-12-16 03:05:41,900 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, 246 predicate places. [2021-12-16 03:05:41,900 INFO L470 AbstractCegarLoop]: Abstraction has has 487 places, 786 transitions, 6998 flow [2021-12-16 03:05:41,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 154.46666666666667) internal successors, (9268), 60 states have internal predecessors, (9268), 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) [2021-12-16 03:05:41,903 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:05:41,903 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:05:41,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 03:05:42,126 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 [2021-12-16 03:05:42,127 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:05:42,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:05:42,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1968974939, now seen corresponding path program 5 times [2021-12-16 03:05:42,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:05:42,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616903450] [2021-12-16 03:05:42,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:05:42,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:05:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:05:42,354 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-16 03:05:42,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:05:42,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616903450] [2021-12-16 03:05:42,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616903450] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:05:42,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:05:42,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-16 03:05:42,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091792823] [2021-12-16 03:05:42,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:05:42,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 03:05:42,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:05:42,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 03:05:42,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-16 03:05:42,360 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 267 [2021-12-16 03:05:42,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 786 transitions, 6998 flow. Second operand has 12 states, 12 states have (on average 189.25) internal successors, (2271), 12 states have internal predecessors, (2271), 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) [2021-12-16 03:05:42,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:05:42,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 267 [2021-12-16 03:05:42,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:05:49,859 INFO L129 PetriNetUnfolder]: 12527/30014 cut-off events. [2021-12-16 03:05:49,859 INFO L130 PetriNetUnfolder]: For 315824/320886 co-relation queries the response was YES. [2021-12-16 03:05:50,143 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115022 conditions, 30014 events. 12527/30014 cut-off events. For 315824/320886 co-relation queries the response was YES. Maximal size of possible extension queue 922. Compared 313876 event pairs, 1826 based on Foata normal form. 304/28472 useless extension candidates. Maximal degree in co-relation 114936. Up to 13532 conditions per place. [2021-12-16 03:05:50,507 INFO L132 encePairwiseOnDemand]: 239/267 looper letters, 611 selfloop transitions, 150 changer transitions 0/986 dead transitions. [2021-12-16 03:05:50,507 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 986 transitions, 10669 flow [2021-12-16 03:05:50,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-16 03:05:50,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-16 03:05:50,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3771 transitions. [2021-12-16 03:05:50,512 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7061797752808989 [2021-12-16 03:05:50,512 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3771 transitions. [2021-12-16 03:05:50,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3771 transitions. [2021-12-16 03:05:50,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:05:50,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3771 transitions. [2021-12-16 03:05:50,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 188.55) internal successors, (3771), 20 states have internal predecessors, (3771), 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) [2021-12-16 03:05:50,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 267.0) internal successors, (5607), 21 states have internal predecessors, (5607), 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) [2021-12-16 03:05:50,522 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 267.0) internal successors, (5607), 21 states have internal predecessors, (5607), 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) [2021-12-16 03:05:50,523 INFO L186 Difference]: Start difference. First operand has 487 places, 786 transitions, 6998 flow. Second operand 20 states and 3771 transitions. [2021-12-16 03:05:50,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 986 transitions, 10669 flow [2021-12-16 03:05:53,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 986 transitions, 8978 flow, removed 794 selfloop flow, removed 37 redundant places. [2021-12-16 03:05:53,650 INFO L242 Difference]: Finished difference. Result has 470 places, 825 transitions, 6530 flow [2021-12-16 03:05:53,650 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=5691, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=786, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=6530, PETRI_PLACES=470, PETRI_TRANSITIONS=825} [2021-12-16 03:05:53,651 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, 229 predicate places. [2021-12-16 03:05:53,651 INFO L470 AbstractCegarLoop]: Abstraction has has 470 places, 825 transitions, 6530 flow [2021-12-16 03:05:53,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 189.25) internal successors, (2271), 12 states have internal predecessors, (2271), 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) [2021-12-16 03:05:53,652 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:05:53,652 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:05:53,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 03:05:53,653 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:05:53,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:05:53,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1411999275, now seen corresponding path program 6 times [2021-12-16 03:05:53,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:05:53,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588062813] [2021-12-16 03:05:53,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:05:53,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:05:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:05:54,314 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:05:54,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:05:54,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588062813] [2021-12-16 03:05:54,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588062813] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:05:54,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358414173] [2021-12-16 03:05:54,315 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-16 03:05:54,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:05:54,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:05:54,317 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) [2021-12-16 03:05:54,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 03:05:54,467 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-12-16 03:05:54,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:05:54,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 56 conjunts are in the unsatisfiable core [2021-12-16 03:05:54,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:05:54,507 INFO L388 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 [2021-12-16 03:05:54,534 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-16 03:05:54,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 12 treesize of output 18 [2021-12-16 03:05:54,799 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-16 03:05:54,799 INFO L388 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 15 treesize of output 15 [2021-12-16 03:05:55,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-16 03:05:56,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:05:56,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-16 03:05:56,556 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-16 03:05:56,556 INFO L388 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 34 treesize of output 10 [2021-12-16 03:05:56,619 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:05:56,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:05:57,369 INFO L354 Elim1Store]: treesize reduction 37, result has 24.5 percent of original size [2021-12-16 03:05:57,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 152 treesize of output 140 [2021-12-16 03:05:57,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 03:05:57,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 85 [2021-12-16 03:05:57,388 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-16 03:05:57,389 INFO L388 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 112 treesize of output 88