./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe005_tso.i --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/pthread-wmm/safe005_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.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 0f4fff0b2b9fbf3a1c21190a7a3a2488ff184faa22678fe9af5f2740e4422fce --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 22:21:37,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 22:21:37,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 22:21:37,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 22:21:37,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 22:21:37,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 22:21:37,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 22:21:37,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 22:21:37,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 22:21:37,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 22:21:37,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 22:21:37,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 22:21:37,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 22:21:37,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 22:21:37,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 22:21:37,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 22:21:37,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 22:21:37,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 22:21:37,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 22:21:37,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 22:21:37,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 22:21:37,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 22:21:37,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 22:21:37,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 22:21:37,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 22:21:37,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 22:21:37,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 22:21:37,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 22:21:37,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 22:21:37,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 22:21:37,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 22:21:37,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 22:21:37,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 22:21:37,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 22:21:37,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 22:21:37,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 22:21:37,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 22:21:37,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 22:21:37,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 22:21:37,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 22:21:37,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 22:21:37,348 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 22:21:37,384 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 22:21:37,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 22:21:37,385 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 22:21:37,385 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 22:21:37,386 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 22:21:37,386 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 22:21:37,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 22:21:37,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 22:21:37,387 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 22:21:37,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 22:21:37,388 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 22:21:37,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 22:21:37,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 22:21:37,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 22:21:37,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 22:21:37,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 22:21:37,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 22:21:37,389 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 22:21:37,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 22:21:37,390 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 22:21:37,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 22:21:37,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 22:21:37,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 22:21:37,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 22:21:37,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:21:37,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 22:21:37,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 22:21:37,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 22:21:37,392 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 22:21:37,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 22:21:37,392 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 22:21:37,392 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 22:21:37,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 22:21:37,393 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 22:21:37,393 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f4fff0b2b9fbf3a1c21190a7a3a2488ff184faa22678fe9af5f2740e4422fce [2021-12-17 22:21:37,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 22:21:37,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 22:21:37,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 22:21:37,637 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 22:21:37,638 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 22:21:37,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe005_tso.i [2021-12-17 22:21:37,691 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be3e1b0c8/b5b11312401e4a24b6931984b8869677/FLAG5b95dc720 [2021-12-17 22:21:38,190 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 22:21:38,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe005_tso.i [2021-12-17 22:21:38,205 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be3e1b0c8/b5b11312401e4a24b6931984b8869677/FLAG5b95dc720 [2021-12-17 22:21:38,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be3e1b0c8/b5b11312401e4a24b6931984b8869677 [2021-12-17 22:21:38,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 22:21:38,672 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 22:21:38,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 22:21:38,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 22:21:38,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 22:21:38,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:21:38" (1/1) ... [2021-12-17 22:21:38,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79763909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:21:38, skipping insertion in model container [2021-12-17 22:21:38,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:21:38" (1/1) ... [2021-12-17 22:21:38,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 22:21:38,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 22:21:38,918 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/pthread-wmm/safe005_tso.i[945,958] [2021-12-17 22:21:39,085 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:21:39,096 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 22:21:39,108 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/pthread-wmm/safe005_tso.i[945,958] [2021-12-17 22:21:39,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:21:39,182 INFO L208 MainTranslator]: Completed translation [2021-12-17 22:21:39,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:21:39 WrapperNode [2021-12-17 22:21:39,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 22:21:39,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 22:21:39,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 22:21:39,185 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 22:21:39,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:21:39" (1/1) ... [2021-12-17 22:21:39,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:21:39" (1/1) ... [2021-12-17 22:21:39,243 INFO L137 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2021-12-17 22:21:39,243 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 22:21:39,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 22:21:39,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 22:21:39,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 22:21:39,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:21:39" (1/1) ... [2021-12-17 22:21:39,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:21:39" (1/1) ... [2021-12-17 22:21:39,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:21:39" (1/1) ... [2021-12-17 22:21:39,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:21:39" (1/1) ... [2021-12-17 22:21:39,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:21:39" (1/1) ... [2021-12-17 22:21:39,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:21:39" (1/1) ... [2021-12-17 22:21:39,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:21:39" (1/1) ... [2021-12-17 22:21:39,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 22:21:39,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 22:21:39,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 22:21:39,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 22:21:39,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:21:39" (1/1) ... [2021-12-17 22:21:39,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:21:39,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 22:21:39,325 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) [2021-12-17 22:21:39,337 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 [2021-12-17 22:21:39,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 22:21:39,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-17 22:21:39,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 22:21:39,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 22:21:39,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 22:21:39,368 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-12-17 22:21:39,368 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-12-17 22:21:39,368 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-12-17 22:21:39,368 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-12-17 22:21:39,368 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-12-17 22:21:39,368 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-12-17 22:21:39,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 22:21:39,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-17 22:21:39,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 22:21:39,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 22:21:39,370 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-17 22:21:39,517 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 22:21:39,532 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 22:21:39,702 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 22:21:39,711 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 22:21:39,711 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 22:21:39,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:21:39 BoogieIcfgContainer [2021-12-17 22:21:39,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 22:21:39,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 22:21:39,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 22:21:39,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 22:21:39,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 10:21:38" (1/3) ... [2021-12-17 22:21:39,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13fc0774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:21:39, skipping insertion in model container [2021-12-17 22:21:39,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:21:39" (2/3) ... [2021-12-17 22:21:39,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13fc0774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:21:39, skipping insertion in model container [2021-12-17 22:21:39,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:21:39" (3/3) ... [2021-12-17 22:21:39,724 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.i [2021-12-17 22:21:39,730 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-17 22:21:39,730 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 22:21:39,731 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 22:21:39,731 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-17 22:21:39,771 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,771 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,771 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,771 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,774 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,774 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,774 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,775 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,775 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,776 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,776 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,776 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,777 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,777 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,777 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,778 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,778 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,778 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,779 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,779 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,790 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,791 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,791 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,792 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,792 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,793 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,793 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,793 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,793 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,793 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,794 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,794 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,795 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,796 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,796 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,796 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,804 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,805 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,805 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,805 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,808 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,809 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,809 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,809 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,810 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,810 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,810 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,811 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:21:39,813 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-17 22:21:39,867 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 22:21:39,882 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 [2021-12-17 22:21:39,883 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-17 22:21:39,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2021-12-17 22:21:39,942 INFO L129 PetriNetUnfolder]: 2/89 cut-off events. [2021-12-17 22:21:39,943 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 22:21:39,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-12-17 22:21:39,947 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2021-12-17 22:21:39,951 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2021-12-17 22:21:39,973 INFO L129 PetriNetUnfolder]: 1/74 cut-off events. [2021-12-17 22:21:39,976 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 22:21:39,977 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:21:39,977 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] [2021-12-17 22:21:39,978 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:21:39,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:21:39,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1011825075, now seen corresponding path program 1 times [2021-12-17 22:21:39,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:21:39,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256186078] [2021-12-17 22:21:39,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:21:39,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:21:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:21:40,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:21:40,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:21:40,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256186078] [2021-12-17 22:21:40,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256186078] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:21:40,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:21:40,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 22:21:40,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996607191] [2021-12-17 22:21:40,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:21:40,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 22:21:40,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:21:40,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 22:21:40,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 22:21:40,524 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2021-12-17 22:21:40,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 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) [2021-12-17 22:21:40,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:21:40,531 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2021-12-17 22:21:40,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:21:40,899 INFO L129 PetriNetUnfolder]: 192/531 cut-off events. [2021-12-17 22:21:40,899 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-12-17 22:21:40,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 902 conditions, 531 events. 192/531 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2648 event pairs, 18 based on Foata normal form. 27/530 useless extension candidates. Maximal degree in co-relation 864. Up to 68 conditions per place. [2021-12-17 22:21:40,905 INFO L132 encePairwiseOnDemand]: 81/92 looper letters, 20 selfloop transitions, 6 changer transitions 42/124 dead transitions. [2021-12-17 22:21:40,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 124 transitions, 393 flow [2021-12-17 22:21:40,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 22:21:40,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-17 22:21:40,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 984 transitions. [2021-12-17 22:21:40,922 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.822742474916388 [2021-12-17 22:21:40,922 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 984 transitions. [2021-12-17 22:21:40,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 984 transitions. [2021-12-17 22:21:40,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:21:40,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 984 transitions. [2021-12-17 22:21:40,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.6923076923077) internal successors, (984), 13 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:21:40,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2021-12-17 22:21:40,943 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2021-12-17 22:21:40,945 INFO L186 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 13 states and 984 transitions. [2021-12-17 22:21:40,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 124 transitions, 393 flow [2021-12-17 22:21:40,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 124 transitions, 390 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-17 22:21:40,951 INFO L242 Difference]: Finished difference. Result has 105 places, 77 transitions, 230 flow [2021-12-17 22:21:40,953 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=230, PETRI_PLACES=105, PETRI_TRANSITIONS=77} [2021-12-17 22:21:40,956 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 21 predicate places. [2021-12-17 22:21:40,956 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 77 transitions, 230 flow [2021-12-17 22:21:40,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 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) [2021-12-17 22:21:40,957 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:21:40,957 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] [2021-12-17 22:21:40,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 22:21:40,957 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:21:40,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:21:40,958 INFO L85 PathProgramCache]: Analyzing trace with hash 427855625, now seen corresponding path program 1 times [2021-12-17 22:21:40,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:21:40,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465823679] [2021-12-17 22:21:40,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:21:40,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:21:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:21:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:21:41,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:21:41,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465823679] [2021-12-17 22:21:41,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465823679] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:21:41,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:21:41,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 22:21:41,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807982619] [2021-12-17 22:21:41,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:21:41,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 22:21:41,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:21:41,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 22:21:41,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-17 22:21:41,154 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2021-12-17 22:21:41,154 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 77 transitions, 230 flow. Second operand has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 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) [2021-12-17 22:21:41,155 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:21:41,155 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2021-12-17 22:21:41,155 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:21:41,294 INFO L129 PetriNetUnfolder]: 50/290 cut-off events. [2021-12-17 22:21:41,294 INFO L130 PetriNetUnfolder]: For 536/873 co-relation queries the response was YES. [2021-12-17 22:21:41,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 782 conditions, 290 events. 50/290 cut-off events. For 536/873 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1323 event pairs, 3 based on Foata normal form. 8/287 useless extension candidates. Maximal degree in co-relation 732. Up to 49 conditions per place. [2021-12-17 22:21:41,297 INFO L132 encePairwiseOnDemand]: 81/92 looper letters, 22 selfloop transitions, 9 changer transitions 19/106 dead transitions. [2021-12-17 22:21:41,297 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 106 transitions, 526 flow [2021-12-17 22:21:41,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 22:21:41,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-17 22:21:41,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 604 transitions. [2021-12-17 22:21:41,299 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8206521739130435 [2021-12-17 22:21:41,299 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 604 transitions. [2021-12-17 22:21:41,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 604 transitions. [2021-12-17 22:21:41,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:21:41,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 604 transitions. [2021-12-17 22:21:41,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 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) [2021-12-17 22:21:41,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 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) [2021-12-17 22:21:41,303 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 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) [2021-12-17 22:21:41,304 INFO L186 Difference]: Start difference. First operand has 105 places, 77 transitions, 230 flow. Second operand 8 states and 604 transitions. [2021-12-17 22:21:41,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 106 transitions, 526 flow [2021-12-17 22:21:41,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 106 transitions, 479 flow, removed 22 selfloop flow, removed 4 redundant places. [2021-12-17 22:21:41,310 INFO L242 Difference]: Finished difference. Result has 104 places, 79 transitions, 262 flow [2021-12-17 22:21:41,310 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=262, PETRI_PLACES=104, PETRI_TRANSITIONS=79} [2021-12-17 22:21:41,311 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 20 predicate places. [2021-12-17 22:21:41,311 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 79 transitions, 262 flow [2021-12-17 22:21:41,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 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) [2021-12-17 22:21:41,312 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:21:41,312 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] [2021-12-17 22:21:41,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 22:21:41,312 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:21:41,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:21:41,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1149679599, now seen corresponding path program 1 times [2021-12-17 22:21:41,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:21:41,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375263169] [2021-12-17 22:21:41,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:21:41,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:21:41,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:21:41,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:21:41,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:21:41,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375263169] [2021-12-17 22:21:41,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375263169] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:21:41,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:21:41,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 22:21:41,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269415412] [2021-12-17 22:21:41,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:21:41,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 22:21:41,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:21:41,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 22:21:41,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 22:21:41,454 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2021-12-17 22:21:41,455 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 79 transitions, 262 flow. Second operand has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 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) [2021-12-17 22:21:41,456 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:21:41,456 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2021-12-17 22:21:41,456 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:21:41,673 INFO L129 PetriNetUnfolder]: 32/286 cut-off events. [2021-12-17 22:21:41,673 INFO L130 PetriNetUnfolder]: For 488/1101 co-relation queries the response was YES. [2021-12-17 22:21:41,675 INFO L84 FinitePrefix]: Finished finitePrefix Result has 741 conditions, 286 events. 32/286 cut-off events. For 488/1101 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1436 event pairs, 11 based on Foata normal form. 8/282 useless extension candidates. Maximal degree in co-relation 703. Up to 39 conditions per place. [2021-12-17 22:21:41,676 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 23 selfloop transitions, 7 changer transitions 23/109 dead transitions. [2021-12-17 22:21:41,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 109 transitions, 564 flow [2021-12-17 22:21:41,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 22:21:41,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-17 22:21:41,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 961 transitions. [2021-12-17 22:21:41,679 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8035117056856187 [2021-12-17 22:21:41,680 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 961 transitions. [2021-12-17 22:21:41,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 961 transitions. [2021-12-17 22:21:41,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:21:41,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 961 transitions. [2021-12-17 22:21:41,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.92307692307692) internal successors, (961), 13 states have internal predecessors, (961), 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) [2021-12-17 22:21:41,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2021-12-17 22:21:41,687 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2021-12-17 22:21:41,689 INFO L186 Difference]: Start difference. First operand has 104 places, 79 transitions, 262 flow. Second operand 13 states and 961 transitions. [2021-12-17 22:21:41,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 109 transitions, 564 flow [2021-12-17 22:21:41,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 109 transitions, 477 flow, removed 28 selfloop flow, removed 9 redundant places. [2021-12-17 22:21:41,696 INFO L242 Difference]: Finished difference. Result has 116 places, 79 transitions, 277 flow [2021-12-17 22:21:41,697 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=277, PETRI_PLACES=116, PETRI_TRANSITIONS=79} [2021-12-17 22:21:41,698 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 32 predicate places. [2021-12-17 22:21:41,699 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 79 transitions, 277 flow [2021-12-17 22:21:41,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 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) [2021-12-17 22:21:41,699 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:21:41,699 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] [2021-12-17 22:21:41,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 22:21:41,704 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:21:41,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:21:41,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1858354060, now seen corresponding path program 1 times [2021-12-17 22:21:41,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:21:41,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358389490] [2021-12-17 22:21:41,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:21:41,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:21:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:21:41,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:21:41,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:21:41,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358389490] [2021-12-17 22:21:41,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358389490] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:21:41,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:21:41,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 22:21:41,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326495135] [2021-12-17 22:21:41,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:21:41,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 22:21:41,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:21:41,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 22:21:41,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-17 22:21:41,882 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2021-12-17 22:21:41,883 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 79 transitions, 277 flow. Second operand has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 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) [2021-12-17 22:21:41,883 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:21:41,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2021-12-17 22:21:41,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:21:41,999 INFO L129 PetriNetUnfolder]: 18/243 cut-off events. [2021-12-17 22:21:42,000 INFO L130 PetriNetUnfolder]: For 593/695 co-relation queries the response was YES. [2021-12-17 22:21:42,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 243 events. 18/243 cut-off events. For 593/695 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1094 event pairs, 9 based on Foata normal form. 8/238 useless extension candidates. Maximal degree in co-relation 603. Up to 33 conditions per place. [2021-12-17 22:21:42,002 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 17 selfloop transitions, 8 changer transitions 12/93 dead transitions. [2021-12-17 22:21:42,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 93 transitions, 481 flow [2021-12-17 22:21:42,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 22:21:42,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-17 22:21:42,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 596 transitions. [2021-12-17 22:21:42,004 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8097826086956522 [2021-12-17 22:21:42,004 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 596 transitions. [2021-12-17 22:21:42,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 596 transitions. [2021-12-17 22:21:42,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:21:42,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 596 transitions. [2021-12-17 22:21:42,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 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) [2021-12-17 22:21:42,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 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) [2021-12-17 22:21:42,008 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 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) [2021-12-17 22:21:42,008 INFO L186 Difference]: Start difference. First operand has 116 places, 79 transitions, 277 flow. Second operand 8 states and 596 transitions. [2021-12-17 22:21:42,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 93 transitions, 481 flow [2021-12-17 22:21:42,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 93 transitions, 410 flow, removed 22 selfloop flow, removed 14 redundant places. [2021-12-17 22:21:42,013 INFO L242 Difference]: Finished difference. Result has 105 places, 79 transitions, 260 flow [2021-12-17 22:21:42,013 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=260, PETRI_PLACES=105, PETRI_TRANSITIONS=79} [2021-12-17 22:21:42,014 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 21 predicate places. [2021-12-17 22:21:42,014 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 79 transitions, 260 flow [2021-12-17 22:21:42,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 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) [2021-12-17 22:21:42,015 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:21:42,015 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] [2021-12-17 22:21:42,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 22:21:42,015 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:21:42,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:21:42,016 INFO L85 PathProgramCache]: Analyzing trace with hash 369852932, now seen corresponding path program 2 times [2021-12-17 22:21:42,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:21:42,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496472768] [2021-12-17 22:21:42,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:21:42,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:21:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:21:42,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:21:42,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:21:42,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496472768] [2021-12-17 22:21:42,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496472768] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:21:42,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:21:42,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 22:21:42,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61031769] [2021-12-17 22:21:42,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:21:42,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 22:21:42,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:21:42,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 22:21:42,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 22:21:42,114 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2021-12-17 22:21:42,115 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 79 transitions, 260 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 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) [2021-12-17 22:21:42,115 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:21:42,115 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2021-12-17 22:21:42,115 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:21:42,304 INFO L129 PetriNetUnfolder]: 366/954 cut-off events. [2021-12-17 22:21:42,304 INFO L130 PetriNetUnfolder]: For 343/354 co-relation queries the response was YES. [2021-12-17 22:21:42,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1897 conditions, 954 events. 366/954 cut-off events. For 343/354 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6575 event pairs, 18 based on Foata normal form. 3/887 useless extension candidates. Maximal degree in co-relation 1845. Up to 250 conditions per place. [2021-12-17 22:21:42,310 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 17 selfloop transitions, 8 changer transitions 21/111 dead transitions. [2021-12-17 22:21:42,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 111 transitions, 420 flow [2021-12-17 22:21:42,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 22:21:42,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-17 22:21:42,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 798 transitions. [2021-12-17 22:21:42,312 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8673913043478261 [2021-12-17 22:21:42,313 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 798 transitions. [2021-12-17 22:21:42,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 798 transitions. [2021-12-17 22:21:42,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:21:42,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 798 transitions. [2021-12-17 22:21:42,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.8) internal successors, (798), 10 states have internal predecessors, (798), 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) [2021-12-17 22:21:42,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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) [2021-12-17 22:21:42,318 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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) [2021-12-17 22:21:42,318 INFO L186 Difference]: Start difference. First operand has 105 places, 79 transitions, 260 flow. Second operand 10 states and 798 transitions. [2021-12-17 22:21:42,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 111 transitions, 420 flow [2021-12-17 22:21:42,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 111 transitions, 401 flow, removed 4 selfloop flow, removed 6 redundant places. [2021-12-17 22:21:42,322 INFO L242 Difference]: Finished difference. Result has 112 places, 85 transitions, 317 flow [2021-12-17 22:21:42,323 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=317, PETRI_PLACES=112, PETRI_TRANSITIONS=85} [2021-12-17 22:21:42,325 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 28 predicate places. [2021-12-17 22:21:42,325 INFO L470 AbstractCegarLoop]: Abstraction has has 112 places, 85 transitions, 317 flow [2021-12-17 22:21:42,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 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) [2021-12-17 22:21:42,325 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:21:42,326 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] [2021-12-17 22:21:42,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 22:21:42,326 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:21:42,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:21:42,327 INFO L85 PathProgramCache]: Analyzing trace with hash -273539377, now seen corresponding path program 1 times [2021-12-17 22:21:42,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:21:42,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021213013] [2021-12-17 22:21:42,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:21:42,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:21:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:21:42,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:21:42,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:21:42,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021213013] [2021-12-17 22:21:42,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021213013] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:21:42,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:21:42,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 22:21:42,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103026862] [2021-12-17 22:21:42,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:21:42,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 22:21:42,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:21:42,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 22:21:42,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 22:21:42,440 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2021-12-17 22:21:42,440 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 85 transitions, 317 flow. Second operand has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 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) [2021-12-17 22:21:42,441 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:21:42,441 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2021-12-17 22:21:42,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:21:42,645 INFO L129 PetriNetUnfolder]: 188/684 cut-off events. [2021-12-17 22:21:42,645 INFO L130 PetriNetUnfolder]: For 1291/1472 co-relation queries the response was YES. [2021-12-17 22:21:42,647 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2167 conditions, 684 events. 188/684 cut-off events. For 1291/1472 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4505 event pairs, 4 based on Foata normal form. 48/710 useless extension candidates. Maximal degree in co-relation 2111. Up to 270 conditions per place. [2021-12-17 22:21:42,650 INFO L132 encePairwiseOnDemand]: 83/92 looper letters, 17 selfloop transitions, 11 changer transitions 21/114 dead transitions. [2021-12-17 22:21:42,650 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 114 transitions, 607 flow [2021-12-17 22:21:42,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 22:21:42,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-17 22:21:42,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 951 transitions. [2021-12-17 22:21:42,653 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8614130434782609 [2021-12-17 22:21:42,653 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 951 transitions. [2021-12-17 22:21:42,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 951 transitions. [2021-12-17 22:21:42,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:21:42,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 951 transitions. [2021-12-17 22:21:42,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 79.25) internal successors, (951), 12 states have internal predecessors, (951), 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) [2021-12-17 22:21:42,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 92.0) internal successors, (1196), 13 states have internal predecessors, (1196), 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) [2021-12-17 22:21:42,658 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 92.0) internal successors, (1196), 13 states have internal predecessors, (1196), 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) [2021-12-17 22:21:42,658 INFO L186 Difference]: Start difference. First operand has 112 places, 85 transitions, 317 flow. Second operand 12 states and 951 transitions. [2021-12-17 22:21:42,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 114 transitions, 607 flow [2021-12-17 22:21:42,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 114 transitions, 594 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-12-17 22:21:42,664 INFO L242 Difference]: Finished difference. Result has 122 places, 88 transitions, 395 flow [2021-12-17 22:21:42,664 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=395, PETRI_PLACES=122, PETRI_TRANSITIONS=88} [2021-12-17 22:21:42,665 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 38 predicate places. [2021-12-17 22:21:42,665 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 88 transitions, 395 flow [2021-12-17 22:21:42,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 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) [2021-12-17 22:21:42,666 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:21:42,666 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] [2021-12-17 22:21:42,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 22:21:42,666 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:21:42,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:21:42,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1102956120, now seen corresponding path program 1 times [2021-12-17 22:21:42,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:21:42,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241763873] [2021-12-17 22:21:42,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:21:42,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:21:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:21:42,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:21:42,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:21:42,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241763873] [2021-12-17 22:21:42,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241763873] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:21:42,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:21:42,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 22:21:42,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529223511] [2021-12-17 22:21:42,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:21:42,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 22:21:42,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:21:42,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 22:21:42,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-17 22:21:42,784 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2021-12-17 22:21:42,784 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 88 transitions, 395 flow. Second operand has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 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) [2021-12-17 22:21:42,785 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:21:42,785 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2021-12-17 22:21:42,785 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:21:42,957 INFO L129 PetriNetUnfolder]: 72/381 cut-off events. [2021-12-17 22:21:42,957 INFO L130 PetriNetUnfolder]: For 1928/2410 co-relation queries the response was YES. [2021-12-17 22:21:42,959 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1425 conditions, 381 events. 72/381 cut-off events. For 1928/2410 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2156 event pairs, 0 based on Foata normal form. 67/427 useless extension candidates. Maximal degree in co-relation 1364. Up to 132 conditions per place. [2021-12-17 22:21:42,961 INFO L132 encePairwiseOnDemand]: 83/92 looper letters, 11 selfloop transitions, 14 changer transitions 15/105 dead transitions. [2021-12-17 22:21:42,961 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 105 transitions, 621 flow [2021-12-17 22:21:42,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 22:21:42,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-17 22:21:42,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1017 transitions. [2021-12-17 22:21:42,964 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8503344481605352 [2021-12-17 22:21:42,964 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1017 transitions. [2021-12-17 22:21:42,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1017 transitions. [2021-12-17 22:21:42,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:21:42,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1017 transitions. [2021-12-17 22:21:42,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 78.23076923076923) internal successors, (1017), 13 states have internal predecessors, (1017), 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) [2021-12-17 22:21:42,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2021-12-17 22:21:42,969 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2021-12-17 22:21:42,970 INFO L186 Difference]: Start difference. First operand has 122 places, 88 transitions, 395 flow. Second operand 13 states and 1017 transitions. [2021-12-17 22:21:42,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 105 transitions, 621 flow [2021-12-17 22:21:42,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 105 transitions, 499 flow, removed 46 selfloop flow, removed 15 redundant places. [2021-12-17 22:21:42,977 INFO L242 Difference]: Finished difference. Result has 121 places, 88 transitions, 362 flow [2021-12-17 22:21:42,977 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=362, PETRI_PLACES=121, PETRI_TRANSITIONS=88} [2021-12-17 22:21:42,978 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 37 predicate places. [2021-12-17 22:21:42,978 INFO L470 AbstractCegarLoop]: Abstraction has has 121 places, 88 transitions, 362 flow [2021-12-17 22:21:42,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 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) [2021-12-17 22:21:42,978 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:21:42,979 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] [2021-12-17 22:21:42,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 22:21:42,979 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:21:42,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:21:42,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1734309589, now seen corresponding path program 1 times [2021-12-17 22:21:42,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:21:42,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134614426] [2021-12-17 22:21:42,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:21:42,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:21:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:21:43,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:21:43,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:21:43,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134614426] [2021-12-17 22:21:43,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134614426] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:21:43,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:21:43,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 22:21:43,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733828297] [2021-12-17 22:21:43,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:21:43,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 22:21:43,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:21:43,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 22:21:43,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 22:21:43,052 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 92 [2021-12-17 22:21:43,052 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 88 transitions, 362 flow. Second operand has 6 states, 6 states have (on average 76.33333333333333) internal successors, (458), 6 states have internal predecessors, (458), 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) [2021-12-17 22:21:43,052 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:21:43,052 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 92 [2021-12-17 22:21:43,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:21:43,138 INFO L129 PetriNetUnfolder]: 37/306 cut-off events. [2021-12-17 22:21:43,139 INFO L130 PetriNetUnfolder]: For 514/547 co-relation queries the response was YES. [2021-12-17 22:21:43,140 INFO L84 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 306 events. 37/306 cut-off events. For 514/547 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1552 event pairs, 2 based on Foata normal form. 4/299 useless extension candidates. Maximal degree in co-relation 742. Up to 58 conditions per place. [2021-12-17 22:21:43,141 INFO L132 encePairwiseOnDemand]: 86/92 looper letters, 13 selfloop transitions, 2 changer transitions 9/93 dead transitions. [2021-12-17 22:21:43,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 93 transitions, 422 flow [2021-12-17 22:21:43,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 22:21:43,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-17 22:21:43,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 466 transitions. [2021-12-17 22:21:43,143 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2021-12-17 22:21:43,143 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 466 transitions. [2021-12-17 22:21:43,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 466 transitions. [2021-12-17 22:21:43,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:21:43,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 466 transitions. [2021-12-17 22:21:43,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 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) [2021-12-17 22:21:43,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 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) [2021-12-17 22:21:43,146 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 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) [2021-12-17 22:21:43,146 INFO L186 Difference]: Start difference. First operand has 121 places, 88 transitions, 362 flow. Second operand 6 states and 466 transitions. [2021-12-17 22:21:43,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 93 transitions, 422 flow [2021-12-17 22:21:43,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 93 transitions, 347 flow, removed 19 selfloop flow, removed 13 redundant places. [2021-12-17 22:21:43,150 INFO L242 Difference]: Finished difference. Result has 113 places, 83 transitions, 270 flow [2021-12-17 22:21:43,151 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=270, PETRI_PLACES=113, PETRI_TRANSITIONS=83} [2021-12-17 22:21:43,151 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 29 predicate places. [2021-12-17 22:21:43,151 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 83 transitions, 270 flow [2021-12-17 22:21:43,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.33333333333333) internal successors, (458), 6 states have internal predecessors, (458), 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) [2021-12-17 22:21:43,152 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:21:43,152 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] [2021-12-17 22:21:43,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 22:21:43,153 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:21:43,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:21:43,153 INFO L85 PathProgramCache]: Analyzing trace with hash 73488683, now seen corresponding path program 2 times [2021-12-17 22:21:43,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:21:43,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390386018] [2021-12-17 22:21:43,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:21:43,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:21:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:21:43,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:21:43,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:21:43,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390386018] [2021-12-17 22:21:43,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390386018] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:21:43,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:21:43,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 22:21:43,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654082240] [2021-12-17 22:21:43,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:21:43,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 22:21:43,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:21:43,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 22:21:43,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 22:21:43,237 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2021-12-17 22:21:43,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 83 transitions, 270 flow. Second operand has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 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) [2021-12-17 22:21:43,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:21:43,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2021-12-17 22:21:43,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:21:43,303 INFO L129 PetriNetUnfolder]: 11/126 cut-off events. [2021-12-17 22:21:43,303 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2021-12-17 22:21:43,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 126 events. 11/126 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 277 event pairs, 0 based on Foata normal form. 1/123 useless extension candidates. Maximal degree in co-relation 219. Up to 12 conditions per place. [2021-12-17 22:21:43,304 INFO L132 encePairwiseOnDemand]: 86/92 looper letters, 0 selfloop transitions, 0 changer transitions 82/82 dead transitions. [2021-12-17 22:21:43,305 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 82 transitions, 294 flow [2021-12-17 22:21:43,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 22:21:43,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-17 22:21:43,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 539 transitions. [2021-12-17 22:21:43,306 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8369565217391305 [2021-12-17 22:21:43,306 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 539 transitions. [2021-12-17 22:21:43,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 539 transitions. [2021-12-17 22:21:43,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:21:43,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 539 transitions. [2021-12-17 22:21:43,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 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) [2021-12-17 22:21:43,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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) [2021-12-17 22:21:43,310 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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) [2021-12-17 22:21:43,311 INFO L186 Difference]: Start difference. First operand has 113 places, 83 transitions, 270 flow. Second operand 7 states and 539 transitions. [2021-12-17 22:21:43,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 82 transitions, 294 flow [2021-12-17 22:21:43,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 82 transitions, 261 flow, removed 9 selfloop flow, removed 10 redundant places. [2021-12-17 22:21:43,312 INFO L242 Difference]: Finished difference. Result has 103 places, 0 transitions, 0 flow [2021-12-17 22:21:43,313 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=103, PETRI_TRANSITIONS=0} [2021-12-17 22:21:43,314 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 19 predicate places. [2021-12-17 22:21:43,314 INFO L470 AbstractCegarLoop]: Abstraction has has 103 places, 0 transitions, 0 flow [2021-12-17 22:21:43,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 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) [2021-12-17 22:21:43,316 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-12-17 22:21:43,317 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-12-17 22:21:43,317 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-12-17 22:21:43,317 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-12-17 22:21:43,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 22:21:43,321 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2021-12-17 22:21:43,322 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-17 22:21:43,322 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 22:21:43,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 10:21:43 BasicIcfg [2021-12-17 22:21:43,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 22:21:43,331 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 22:21:43,331 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 22:21:43,331 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 22:21:43,332 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:21:39" (3/4) ... [2021-12-17 22:21:43,334 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-17 22:21:43,339 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-12-17 22:21:43,339 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-12-17 22:21:43,339 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-12-17 22:21:43,344 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-12-17 22:21:43,344 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-17 22:21:43,344 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-17 22:21:43,344 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-17 22:21:43,373 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 22:21:43,373 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 22:21:43,374 INFO L158 Benchmark]: Toolchain (without parser) took 4701.71ms. Allocated memory was 104.9MB in the beginning and 161.5MB in the end (delta: 56.6MB). Free memory was 75.4MB in the beginning and 88.9MB in the end (delta: -13.5MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. [2021-12-17 22:21:43,374 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 104.9MB. Free memory was 62.2MB in the beginning and 62.1MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 22:21:43,375 INFO L158 Benchmark]: CACSL2BoogieTranslator took 508.24ms. Allocated memory is still 104.9MB. Free memory was 75.2MB in the beginning and 70.9MB in the end (delta: 4.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 22:21:43,375 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.85ms. Allocated memory is still 104.9MB. Free memory was 70.9MB in the beginning and 68.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 22:21:43,375 INFO L158 Benchmark]: Boogie Preprocessor took 45.94ms. Allocated memory is still 104.9MB. Free memory was 68.7MB in the beginning and 67.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 22:21:43,376 INFO L158 Benchmark]: RCFGBuilder took 423.63ms. Allocated memory is still 104.9MB. Free memory was 67.5MB in the beginning and 55.3MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-17 22:21:43,376 INFO L158 Benchmark]: TraceAbstraction took 3614.73ms. Allocated memory was 104.9MB in the beginning and 161.5MB in the end (delta: 56.6MB). Free memory was 54.9MB in the beginning and 92.1MB in the end (delta: -37.1MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2021-12-17 22:21:43,376 INFO L158 Benchmark]: Witness Printer took 42.55ms. Allocated memory is still 161.5MB. Free memory was 92.1MB in the beginning and 88.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-17 22:21:43,378 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 104.9MB. Free memory was 62.2MB in the beginning and 62.1MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 508.24ms. Allocated memory is still 104.9MB. Free memory was 75.2MB in the beginning and 70.9MB in the end (delta: 4.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.85ms. Allocated memory is still 104.9MB. Free memory was 70.9MB in the beginning and 68.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.94ms. Allocated memory is still 104.9MB. Free memory was 68.7MB in the beginning and 67.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 423.63ms. Allocated memory is still 104.9MB. Free memory was 67.5MB in the beginning and 55.3MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3614.73ms. Allocated memory was 104.9MB in the beginning and 161.5MB in the end (delta: 56.6MB). Free memory was 54.9MB in the beginning and 92.1MB in the end (delta: -37.1MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. * Witness Printer took 42.55ms. Allocated memory is still 161.5MB. Free memory was 92.1MB in the beginning and 88.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.5s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 321 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 321 mSDsluCounter, 471 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 492 mSDsCounter, 88 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 539 IncrementalHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 88 mSolverCounterUnsat, 108 mSDtfsCounter, 539 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=395occurred in iteration=6, InterpolantAutomatonStates: 90, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 565 NumberOfCodeBlocks, 565 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 556 ConstructedInterpolants, 0 QuantifiedInterpolants, 2276 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-17 22:21:43,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE