./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/test-easy10.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/test-easy10.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:16:32,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:16:32,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:16:32,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:16:32,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:16:32,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:16:32,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:16:32,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:16:32,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:16:32,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:16:32,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:16:32,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:16:32,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:16:32,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:16:32,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:16:32,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:16:32,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:16:32,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:16:32,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:16:32,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:16:32,289 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:16:32,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:16:32,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:16:32,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:16:32,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:16:32,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:16:32,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:16:32,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:16:32,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:16:32,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:16:32,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:16:32,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:16:32,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:16:32,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:16:32,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:16:32,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:16:32,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:16:32,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:16:32,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:16:32,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:16:32,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:16:32,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:16:32,310 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 09:16:32,344 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:16:32,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:16:32,345 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:16:32,345 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:16:32,346 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:16:32,346 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:16:32,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:16:32,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:16:32,347 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:16:32,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:16:32,348 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 09:16:32,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:16:32,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 09:16:32,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:16:32,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:16:32,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:16:32,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:16:32,349 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 09:16:32,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:16:32,349 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:16:32,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:16:32,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:16:32,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:16:32,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:16:32,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:16:32,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:16:32,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:16:32,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:16:32,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:16:32,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:16:32,351 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:16:32,351 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:16:32,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:16:32,351 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b [2022-07-21 09:16:32,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:16:32,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:16:32,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:16:32,678 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:16:32,679 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:16:32,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy10.wvr.c [2022-07-21 09:16:32,734 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69c1132a9/103470836299420fa5dec1bf8ac22a58/FLAG45cf0c17d [2022-07-21 09:16:33,088 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:16:33,089 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c [2022-07-21 09:16:33,094 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69c1132a9/103470836299420fa5dec1bf8ac22a58/FLAG45cf0c17d [2022-07-21 09:16:33,102 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69c1132a9/103470836299420fa5dec1bf8ac22a58 [2022-07-21 09:16:33,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:16:33,104 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:16:33,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:16:33,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:16:33,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:16:33,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:16:33" (1/1) ... [2022-07-21 09:16:33,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3190dc52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:16:33, skipping insertion in model container [2022-07-21 09:16:33,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:16:33" (1/1) ... [2022-07-21 09:16:33,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:16:33,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:16:33,309 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c[3907,3920] [2022-07-21 09:16:33,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:16:33,351 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:16:33,398 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c[3907,3920] [2022-07-21 09:16:33,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:16:33,428 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:16:33,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:16:33 WrapperNode [2022-07-21 09:16:33,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:16:33,445 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:16:33,445 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:16:33,445 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:16:33,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:16:33" (1/1) ... [2022-07-21 09:16:33,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:16:33" (1/1) ... [2022-07-21 09:16:33,484 INFO L137 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 188 [2022-07-21 09:16:33,484 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:16:33,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:16:33,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:16:33,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:16:33,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:16:33" (1/1) ... [2022-07-21 09:16:33,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:16:33" (1/1) ... [2022-07-21 09:16:33,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:16:33" (1/1) ... [2022-07-21 09:16:33,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:16:33" (1/1) ... [2022-07-21 09:16:33,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:16:33" (1/1) ... [2022-07-21 09:16:33,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:16:33" (1/1) ... [2022-07-21 09:16:33,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:16:33" (1/1) ... [2022-07-21 09:16:33,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:16:33,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:16:33,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:16:33,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:16:33,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:16:33" (1/1) ... [2022-07-21 09:16:33,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:16:33,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:16:33,531 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) [2022-07-21 09:16:33,533 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 [2022-07-21 09:16:33,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:16:33,574 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-21 09:16:33,574 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-21 09:16:33,574 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-21 09:16:33,574 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-21 09:16:33,574 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-21 09:16:33,574 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-21 09:16:33,574 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-21 09:16:33,574 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-21 09:16:33,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:16:33,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:16:33,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:16:33,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-21 09:16:33,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-21 09:16:33,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:16:33,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:16:33,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:16:33,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:16:33,575 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 09:16:33,685 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:16:33,687 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:16:33,932 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:16:33,980 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:16:33,984 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 09:16:33,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:16:33 BoogieIcfgContainer [2022-07-21 09:16:33,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:16:33,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:16:33,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:16:33,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:16:33,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:16:33" (1/3) ... [2022-07-21 09:16:33,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef1d5a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:16:33, skipping insertion in model container [2022-07-21 09:16:33,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:16:33" (2/3) ... [2022-07-21 09:16:33,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef1d5a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:16:33, skipping insertion in model container [2022-07-21 09:16:33,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:16:33" (3/3) ... [2022-07-21 09:16:33,994 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2022-07-21 09:16:33,997 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 09:16:34,004 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:16:34,004 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:16:34,004 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 09:16:34,079 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-21 09:16:34,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 138 transitions, 308 flow [2022-07-21 09:16:34,186 INFO L129 PetriNetUnfolder]: 2/134 cut-off events. [2022-07-21 09:16:34,187 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-21 09:16:34,189 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 134 events. 2/134 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2022-07-21 09:16:34,190 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 138 transitions, 308 flow [2022-07-21 09:16:34,204 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 121 transitions, 266 flow [2022-07-21 09:16:34,219 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:16:34,227 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@19b3b9fd, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@77f8ae84 [2022-07-21 09:16:34,227 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-21 09:16:34,266 INFO L129 PetriNetUnfolder]: 2/120 cut-off events. [2022-07-21 09:16:34,266 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-21 09:16:34,266 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:16:34,267 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:16:34,268 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 09:16:34,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:16:34,273 INFO L85 PathProgramCache]: Analyzing trace with hash 139718033, now seen corresponding path program 1 times [2022-07-21 09:16:34,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:16:34,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992893726] [2022-07-21 09:16:34,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:16:34,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:16:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:16:34,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:16:34,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:16:34,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992893726] [2022-07-21 09:16:34,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992893726] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:16:34,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:16:34,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:16:34,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533777798] [2022-07-21 09:16:34,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:16:34,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:16:34,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:16:34,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:16:34,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:16:34,778 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-07-21 09:16:34,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 121 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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) [2022-07-21 09:16:34,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:16:34,783 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-07-21 09:16:34,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:16:34,879 INFO L129 PetriNetUnfolder]: 58/321 cut-off events. [2022-07-21 09:16:34,879 INFO L130 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-07-21 09:16:34,882 INFO L84 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 321 events. 58/321 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1159 event pairs, 13 based on Foata normal form. 10/326 useless extension candidates. Maximal degree in co-relation 368. Up to 100 conditions per place. [2022-07-21 09:16:34,884 INFO L132 encePairwiseOnDemand]: 133/138 looper letters, 16 selfloop transitions, 2 changer transitions 2/123 dead transitions. [2022-07-21 09:16:34,884 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 123 transitions, 312 flow [2022-07-21 09:16:34,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:16:34,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 09:16:34,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2022-07-21 09:16:34,903 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.927536231884058 [2022-07-21 09:16:34,903 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2022-07-21 09:16:34,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2022-07-21 09:16:34,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:16:34,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2022-07-21 09:16:34,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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) [2022-07-21 09:16:34,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2022-07-21 09:16:34,920 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2022-07-21 09:16:34,921 INFO L186 Difference]: Start difference. First operand has 132 places, 121 transitions, 266 flow. Second operand 3 states and 384 transitions. [2022-07-21 09:16:34,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 123 transitions, 312 flow [2022-07-21 09:16:34,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 123 transitions, 292 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-21 09:16:34,932 INFO L242 Difference]: Finished difference. Result has 127 places, 117 transitions, 250 flow [2022-07-21 09:16:34,933 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=127, PETRI_TRANSITIONS=117} [2022-07-21 09:16:34,936 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -5 predicate places. [2022-07-21 09:16:34,936 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 117 transitions, 250 flow [2022-07-21 09:16:34,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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) [2022-07-21 09:16:34,936 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:16:34,937 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:16:34,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:16:34,937 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 09:16:34,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:16:34,939 INFO L85 PathProgramCache]: Analyzing trace with hash 501328017, now seen corresponding path program 2 times [2022-07-21 09:16:34,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:16:34,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917613160] [2022-07-21 09:16:34,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:16:34,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:16:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:16:36,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:16:36,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:16:36,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917613160] [2022-07-21 09:16:36,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917613160] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:16:36,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:16:36,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-21 09:16:36,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697882815] [2022-07-21 09:16:36,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:16:36,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 09:16:36,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:16:36,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 09:16:36,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:16:36,258 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-07-21 09:16:36,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 117 transitions, 250 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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) [2022-07-21 09:16:36,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:16:36,260 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-07-21 09:16:36,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:16:38,646 INFO L129 PetriNetUnfolder]: 5295/10126 cut-off events. [2022-07-21 09:16:38,647 INFO L130 PetriNetUnfolder]: For 695/695 co-relation queries the response was YES. [2022-07-21 09:16:38,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18556 conditions, 10126 events. 5295/10126 cut-off events. For 695/695 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 81109 event pairs, 924 based on Foata normal form. 1/10065 useless extension candidates. Maximal degree in co-relation 13896. Up to 2601 conditions per place. [2022-07-21 09:16:38,701 INFO L132 encePairwiseOnDemand]: 118/138 looper letters, 198 selfloop transitions, 21 changer transitions 13/301 dead transitions. [2022-07-21 09:16:38,701 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 301 transitions, 1136 flow [2022-07-21 09:16:38,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:16:38,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:16:38,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1763 transitions. [2022-07-21 09:16:38,705 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7097423510466989 [2022-07-21 09:16:38,705 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1763 transitions. [2022-07-21 09:16:38,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1763 transitions. [2022-07-21 09:16:38,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:16:38,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1763 transitions. [2022-07-21 09:16:38,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 97.94444444444444) internal successors, (1763), 18 states have internal predecessors, (1763), 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) [2022-07-21 09:16:38,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 138.0) internal successors, (2622), 19 states have internal predecessors, (2622), 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) [2022-07-21 09:16:38,714 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 138.0) internal successors, (2622), 19 states have internal predecessors, (2622), 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) [2022-07-21 09:16:38,714 INFO L186 Difference]: Start difference. First operand has 127 places, 117 transitions, 250 flow. Second operand 18 states and 1763 transitions. [2022-07-21 09:16:38,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 301 transitions, 1136 flow [2022-07-21 09:16:38,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 301 transitions, 1132 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 09:16:38,720 INFO L242 Difference]: Finished difference. Result has 154 places, 135 transitions, 399 flow [2022-07-21 09:16:38,720 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=399, PETRI_PLACES=154, PETRI_TRANSITIONS=135} [2022-07-21 09:16:38,720 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 22 predicate places. [2022-07-21 09:16:38,721 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 135 transitions, 399 flow [2022-07-21 09:16:38,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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) [2022-07-21 09:16:38,722 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:16:38,722 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:16:38,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 09:16:38,722 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 09:16:38,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:16:38,723 INFO L85 PathProgramCache]: Analyzing trace with hash 374419285, now seen corresponding path program 3 times [2022-07-21 09:16:38,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:16:38,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741357269] [2022-07-21 09:16:38,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:16:38,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:16:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:16:38,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:16:38,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:16:38,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741357269] [2022-07-21 09:16:38,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741357269] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:16:38,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:16:38,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:16:38,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333003105] [2022-07-21 09:16:38,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:16:38,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:16:38,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:16:38,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:16:38,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:16:38,848 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-07-21 09:16:38,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 135 transitions, 399 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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) [2022-07-21 09:16:38,849 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:16:38,849 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-07-21 09:16:38,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:16:39,015 INFO L129 PetriNetUnfolder]: 225/1181 cut-off events. [2022-07-21 09:16:39,015 INFO L130 PetriNetUnfolder]: For 248/280 co-relation queries the response was YES. [2022-07-21 09:16:39,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2106 conditions, 1181 events. 225/1181 cut-off events. For 248/280 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8976 event pairs, 101 based on Foata normal form. 12/1125 useless extension candidates. Maximal degree in co-relation 2065. Up to 336 conditions per place. [2022-07-21 09:16:39,025 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 17 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2022-07-21 09:16:39,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 136 transitions, 432 flow [2022-07-21 09:16:39,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:16:39,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 09:16:39,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2022-07-21 09:16:39,027 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9251207729468599 [2022-07-21 09:16:39,027 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2022-07-21 09:16:39,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2022-07-21 09:16:39,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:16:39,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2022-07-21 09:16:39,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2022-07-21 09:16:39,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2022-07-21 09:16:39,029 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2022-07-21 09:16:39,029 INFO L186 Difference]: Start difference. First operand has 154 places, 135 transitions, 399 flow. Second operand 3 states and 383 transitions. [2022-07-21 09:16:39,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 136 transitions, 432 flow [2022-07-21 09:16:39,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 136 transitions, 416 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-07-21 09:16:39,035 INFO L242 Difference]: Finished difference. Result has 146 places, 131 transitions, 371 flow [2022-07-21 09:16:39,035 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=371, PETRI_PLACES=146, PETRI_TRANSITIONS=131} [2022-07-21 09:16:39,036 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 14 predicate places. [2022-07-21 09:16:39,036 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 131 transitions, 371 flow [2022-07-21 09:16:39,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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) [2022-07-21 09:16:39,036 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:16:39,037 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:16:39,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 09:16:39,037 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 09:16:39,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:16:39,038 INFO L85 PathProgramCache]: Analyzing trace with hash -687098003, now seen corresponding path program 4 times [2022-07-21 09:16:39,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:16:39,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713153655] [2022-07-21 09:16:39,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:16:39,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:16:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:16:39,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:16:39,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:16:39,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713153655] [2022-07-21 09:16:39,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713153655] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:16:39,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:16:39,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:16:39,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709604535] [2022-07-21 09:16:39,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:16:39,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:16:39,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:16:39,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:16:39,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:16:39,144 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-07-21 09:16:39,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 131 transitions, 371 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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) [2022-07-21 09:16:39,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:16:39,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-07-21 09:16:39,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:16:39,223 INFO L129 PetriNetUnfolder]: 153/822 cut-off events. [2022-07-21 09:16:39,223 INFO L130 PetriNetUnfolder]: For 235/265 co-relation queries the response was YES. [2022-07-21 09:16:39,226 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1508 conditions, 822 events. 153/822 cut-off events. For 235/265 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5274 event pairs, 33 based on Foata normal form. 16/787 useless extension candidates. Maximal degree in co-relation 1369. Up to 282 conditions per place. [2022-07-21 09:16:39,228 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 17 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2022-07-21 09:16:39,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 134 transitions, 412 flow [2022-07-21 09:16:39,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:16:39,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 09:16:39,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2022-07-21 09:16:39,231 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9251207729468599 [2022-07-21 09:16:39,231 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2022-07-21 09:16:39,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2022-07-21 09:16:39,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:16:39,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2022-07-21 09:16:39,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2022-07-21 09:16:39,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2022-07-21 09:16:39,235 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2022-07-21 09:16:39,235 INFO L186 Difference]: Start difference. First operand has 146 places, 131 transitions, 371 flow. Second operand 3 states and 383 transitions. [2022-07-21 09:16:39,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 134 transitions, 412 flow [2022-07-21 09:16:39,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 134 transitions, 406 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-07-21 09:16:39,243 INFO L242 Difference]: Finished difference. Result has 145 places, 129 transitions, 361 flow [2022-07-21 09:16:39,244 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=361, PETRI_PLACES=145, PETRI_TRANSITIONS=129} [2022-07-21 09:16:39,245 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 13 predicate places. [2022-07-21 09:16:39,245 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 129 transitions, 361 flow [2022-07-21 09:16:39,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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) [2022-07-21 09:16:39,246 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:16:39,246 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:16:39,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 09:16:39,247 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 09:16:39,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:16:39,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1333540457, now seen corresponding path program 5 times [2022-07-21 09:16:39,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:16:39,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484639190] [2022-07-21 09:16:39,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:16:39,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:16:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:16:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:16:40,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:16:40,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484639190] [2022-07-21 09:16:40,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484639190] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:16:40,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:16:40,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-21 09:16:40,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002797981] [2022-07-21 09:16:40,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:16:40,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 09:16:40,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:16:40,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 09:16:40,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:16:40,099 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-07-21 09:16:40,101 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 129 transitions, 361 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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) [2022-07-21 09:16:40,101 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:16:40,101 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-07-21 09:16:40,101 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:16:43,121 INFO L129 PetriNetUnfolder]: 7902/16109 cut-off events. [2022-07-21 09:16:43,121 INFO L130 PetriNetUnfolder]: For 10831/10831 co-relation queries the response was YES. [2022-07-21 09:16:43,167 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39870 conditions, 16109 events. 7902/16109 cut-off events. For 10831/10831 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 146481 event pairs, 2136 based on Foata normal form. 1/16003 useless extension candidates. Maximal degree in co-relation 29254. Up to 3677 conditions per place. [2022-07-21 09:16:43,236 INFO L132 encePairwiseOnDemand]: 121/138 looper letters, 211 selfloop transitions, 26 changer transitions 13/319 dead transitions. [2022-07-21 09:16:43,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 319 transitions, 1554 flow [2022-07-21 09:16:43,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:16:43,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 09:16:43,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1564 transitions. [2022-07-21 09:16:43,240 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2022-07-21 09:16:43,241 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1564 transitions. [2022-07-21 09:16:43,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1564 transitions. [2022-07-21 09:16:43,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:16:43,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1564 transitions. [2022-07-21 09:16:43,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 97.75) internal successors, (1564), 16 states have internal predecessors, (1564), 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) [2022-07-21 09:16:43,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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) [2022-07-21 09:16:43,247 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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) [2022-07-21 09:16:43,248 INFO L186 Difference]: Start difference. First operand has 145 places, 129 transitions, 361 flow. Second operand 16 states and 1564 transitions. [2022-07-21 09:16:43,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 319 transitions, 1554 flow [2022-07-21 09:16:43,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 319 transitions, 1550 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 09:16:43,336 INFO L242 Difference]: Finished difference. Result has 172 places, 150 transitions, 610 flow [2022-07-21 09:16:43,336 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=610, PETRI_PLACES=172, PETRI_TRANSITIONS=150} [2022-07-21 09:16:43,338 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 40 predicate places. [2022-07-21 09:16:43,338 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 150 transitions, 610 flow [2022-07-21 09:16:43,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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) [2022-07-21 09:16:43,339 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:16:43,339 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:16:43,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 09:16:43,340 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 09:16:43,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:16:43,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1948823381, now seen corresponding path program 6 times [2022-07-21 09:16:43,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:16:43,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717590808] [2022-07-21 09:16:43,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:16:43,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:16:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:16:43,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:16:43,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:16:43,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717590808] [2022-07-21 09:16:43,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717590808] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:16:43,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:16:43,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:16:43,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529939485] [2022-07-21 09:16:43,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:16:43,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:16:43,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:16:43,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:16:43,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:16:43,417 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-07-21 09:16:43,417 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 150 transitions, 610 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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) [2022-07-21 09:16:43,418 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:16:43,418 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-07-21 09:16:43,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:16:43,727 INFO L129 PetriNetUnfolder]: 384/2429 cut-off events. [2022-07-21 09:16:43,727 INFO L130 PetriNetUnfolder]: For 1691/1843 co-relation queries the response was YES. [2022-07-21 09:16:43,738 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5263 conditions, 2429 events. 384/2429 cut-off events. For 1691/1843 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 23829 event pairs, 136 based on Foata normal form. 60/2403 useless extension candidates. Maximal degree in co-relation 5147. Up to 660 conditions per place. [2022-07-21 09:16:43,744 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 16 selfloop transitions, 2 changer transitions 0/152 dead transitions. [2022-07-21 09:16:43,744 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 152 transitions, 646 flow [2022-07-21 09:16:43,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:16:43,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 09:16:43,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2022-07-21 09:16:43,745 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9227053140096618 [2022-07-21 09:16:43,746 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2022-07-21 09:16:43,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2022-07-21 09:16:43,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:16:43,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2022-07-21 09:16:43,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 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) [2022-07-21 09:16:43,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2022-07-21 09:16:43,748 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2022-07-21 09:16:43,748 INFO L186 Difference]: Start difference. First operand has 172 places, 150 transitions, 610 flow. Second operand 3 states and 382 transitions. [2022-07-21 09:16:43,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 152 transitions, 646 flow [2022-07-21 09:16:43,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 152 transitions, 628 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-07-21 09:16:43,760 INFO L242 Difference]: Finished difference. Result has 166 places, 148 transitions, 586 flow [2022-07-21 09:16:43,760 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=586, PETRI_PLACES=166, PETRI_TRANSITIONS=148} [2022-07-21 09:16:43,762 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 34 predicate places. [2022-07-21 09:16:43,762 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 148 transitions, 586 flow [2022-07-21 09:16:43,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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) [2022-07-21 09:16:43,763 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:16:43,763 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:16:43,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 09:16:43,764 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 09:16:43,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:16:43,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1125467677, now seen corresponding path program 7 times [2022-07-21 09:16:43,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:16:43,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599824754] [2022-07-21 09:16:43,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:16:43,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:16:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:16:44,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:16:44,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:16:44,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599824754] [2022-07-21 09:16:44,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599824754] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:16:44,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:16:44,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-21 09:16:44,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312693369] [2022-07-21 09:16:44,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:16:44,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 09:16:44,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:16:44,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 09:16:44,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:16:44,540 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-07-21 09:16:44,541 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 148 transitions, 586 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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) [2022-07-21 09:16:44,541 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:16:44,541 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-07-21 09:16:44,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:16:47,613 INFO L129 PetriNetUnfolder]: 7764/17938 cut-off events. [2022-07-21 09:16:47,613 INFO L130 PetriNetUnfolder]: For 30855/30855 co-relation queries the response was YES. [2022-07-21 09:16:47,689 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51930 conditions, 17938 events. 7764/17938 cut-off events. For 30855/30855 co-relation queries the response was YES. Maximal size of possible extension queue 1026. Compared 178716 event pairs, 2035 based on Foata normal form. 1/17838 useless extension candidates. Maximal degree in co-relation 40974. Up to 3287 conditions per place. [2022-07-21 09:16:47,756 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 218 selfloop transitions, 43 changer transitions 9/339 dead transitions. [2022-07-21 09:16:47,756 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 339 transitions, 2090 flow [2022-07-21 09:16:47,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:16:47,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 09:16:47,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1566 transitions. [2022-07-21 09:16:47,760 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7092391304347826 [2022-07-21 09:16:47,760 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1566 transitions. [2022-07-21 09:16:47,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1566 transitions. [2022-07-21 09:16:47,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:16:47,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1566 transitions. [2022-07-21 09:16:47,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 97.875) internal successors, (1566), 16 states have internal predecessors, (1566), 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) [2022-07-21 09:16:47,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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) [2022-07-21 09:16:47,766 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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) [2022-07-21 09:16:47,766 INFO L186 Difference]: Start difference. First operand has 166 places, 148 transitions, 586 flow. Second operand 16 states and 1566 transitions. [2022-07-21 09:16:47,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 339 transitions, 2090 flow [2022-07-21 09:16:47,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 339 transitions, 2074 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-07-21 09:16:47,984 INFO L242 Difference]: Finished difference. Result has 192 places, 174 transitions, 999 flow [2022-07-21 09:16:47,985 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=999, PETRI_PLACES=192, PETRI_TRANSITIONS=174} [2022-07-21 09:16:47,985 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 60 predicate places. [2022-07-21 09:16:47,985 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 174 transitions, 999 flow [2022-07-21 09:16:47,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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) [2022-07-21 09:16:47,986 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:16:47,986 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:16:47,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 09:16:47,986 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 09:16:47,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:16:47,987 INFO L85 PathProgramCache]: Analyzing trace with hash 701019377, now seen corresponding path program 8 times [2022-07-21 09:16:47,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:16:47,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929840591] [2022-07-21 09:16:47,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:16:47,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:16:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:16:48,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:16:48,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:16:48,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929840591] [2022-07-21 09:16:48,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929840591] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:16:48,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:16:48,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-21 09:16:48,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664088964] [2022-07-21 09:16:48,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:16:48,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 09:16:48,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:16:48,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 09:16:48,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:16:48,668 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-07-21 09:16:48,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 174 transitions, 999 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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) [2022-07-21 09:16:48,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:16:48,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-07-21 09:16:48,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:16:53,058 INFO L129 PetriNetUnfolder]: 10782/28342 cut-off events. [2022-07-21 09:16:53,058 INFO L130 PetriNetUnfolder]: For 82469/82469 co-relation queries the response was YES. [2022-07-21 09:16:53,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87957 conditions, 28342 events. 10782/28342 cut-off events. For 82469/82469 co-relation queries the response was YES. Maximal size of possible extension queue 1655. Compared 334333 event pairs, 2973 based on Foata normal form. 1/28025 useless extension candidates. Maximal degree in co-relation 87344. Up to 5265 conditions per place. [2022-07-21 09:16:53,431 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 313 selfloop transitions, 49 changer transitions 8/439 dead transitions. [2022-07-21 09:16:53,431 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 439 transitions, 3480 flow [2022-07-21 09:16:53,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:16:53,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 09:16:53,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1597 transitions. [2022-07-21 09:16:53,435 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7232789855072463 [2022-07-21 09:16:53,435 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1597 transitions. [2022-07-21 09:16:53,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1597 transitions. [2022-07-21 09:16:53,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:16:53,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1597 transitions. [2022-07-21 09:16:53,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.8125) internal successors, (1597), 16 states have internal predecessors, (1597), 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) [2022-07-21 09:16:53,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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) [2022-07-21 09:16:53,442 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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) [2022-07-21 09:16:53,442 INFO L186 Difference]: Start difference. First operand has 192 places, 174 transitions, 999 flow. Second operand 16 states and 1597 transitions. [2022-07-21 09:16:53,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 439 transitions, 3480 flow [2022-07-21 09:16:54,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 439 transitions, 3321 flow, removed 50 selfloop flow, removed 6 redundant places. [2022-07-21 09:16:54,702 INFO L242 Difference]: Finished difference. Result has 212 places, 204 transitions, 1517 flow [2022-07-21 09:16:54,702 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1517, PETRI_PLACES=212, PETRI_TRANSITIONS=204} [2022-07-21 09:16:54,703 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 80 predicate places. [2022-07-21 09:16:54,703 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 204 transitions, 1517 flow [2022-07-21 09:16:54,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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) [2022-07-21 09:16:54,703 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:16:54,704 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:16:54,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 09:16:54,704 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 09:16:54,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:16:54,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1490010129, now seen corresponding path program 9 times [2022-07-21 09:16:54,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:16:54,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785848534] [2022-07-21 09:16:54,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:16:54,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:16:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:16:55,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:16:55,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:16:55,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785848534] [2022-07-21 09:16:55,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785848534] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:16:55,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:16:55,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-21 09:16:55,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648102398] [2022-07-21 09:16:55,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:16:55,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 09:16:55,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:16:55,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 09:16:55,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:16:55,392 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-07-21 09:16:55,393 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 204 transitions, 1517 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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) [2022-07-21 09:16:55,393 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:16:55,393 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-07-21 09:16:55,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:17:01,188 INFO L129 PetriNetUnfolder]: 12842/36195 cut-off events. [2022-07-21 09:17:01,189 INFO L130 PetriNetUnfolder]: For 157063/157063 co-relation queries the response was YES. [2022-07-21 09:17:01,449 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124813 conditions, 36195 events. 12842/36195 cut-off events. For 157063/157063 co-relation queries the response was YES. Maximal size of possible extension queue 2356. Compared 463400 event pairs, 3643 based on Foata normal form. 1/35848 useless extension candidates. Maximal degree in co-relation 123560. Up to 7155 conditions per place. [2022-07-21 09:17:01,566 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 386 selfloop transitions, 56 changer transitions 10/521 dead transitions. [2022-07-21 09:17:01,567 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 521 transitions, 5596 flow [2022-07-21 09:17:01,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:17:01,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 09:17:01,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1570 transitions. [2022-07-21 09:17:01,570 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7110507246376812 [2022-07-21 09:17:01,570 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1570 transitions. [2022-07-21 09:17:01,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1570 transitions. [2022-07-21 09:17:01,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:17:01,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1570 transitions. [2022-07-21 09:17:01,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 98.125) internal successors, (1570), 16 states have internal predecessors, (1570), 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) [2022-07-21 09:17:01,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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) [2022-07-21 09:17:01,577 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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) [2022-07-21 09:17:01,577 INFO L186 Difference]: Start difference. First operand has 212 places, 204 transitions, 1517 flow. Second operand 16 states and 1570 transitions. [2022-07-21 09:17:01,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 521 transitions, 5596 flow [2022-07-21 09:17:02,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 521 transitions, 5372 flow, removed 108 selfloop flow, removed 4 redundant places. [2022-07-21 09:17:02,748 INFO L242 Difference]: Finished difference. Result has 234 places, 243 transitions, 2204 flow [2022-07-21 09:17:02,748 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1459, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2204, PETRI_PLACES=234, PETRI_TRANSITIONS=243} [2022-07-21 09:17:02,748 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 102 predicate places. [2022-07-21 09:17:02,749 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 243 transitions, 2204 flow [2022-07-21 09:17:02,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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) [2022-07-21 09:17:02,749 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:17:02,749 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:17:02,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 09:17:02,750 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 09:17:02,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:17:02,750 INFO L85 PathProgramCache]: Analyzing trace with hash -280997747, now seen corresponding path program 10 times [2022-07-21 09:17:02,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:17:02,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879583131] [2022-07-21 09:17:02,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:17:02,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:17:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:17:03,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:17:03,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:17:03,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879583131] [2022-07-21 09:17:03,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879583131] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:17:03,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:17:03,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-21 09:17:03,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879321731] [2022-07-21 09:17:03,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:17:03,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 09:17:03,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:17:03,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 09:17:03,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:17:03,308 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-07-21 09:17:03,309 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 243 transitions, 2204 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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) [2022-07-21 09:17:03,309 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:17:03,309 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-07-21 09:17:03,309 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:17:10,798 INFO L129 PetriNetUnfolder]: 13769/41000 cut-off events. [2022-07-21 09:17:10,798 INFO L130 PetriNetUnfolder]: For 238538/238538 co-relation queries the response was YES. [2022-07-21 09:17:11,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 150283 conditions, 41000 events. 13769/41000 cut-off events. For 238538/238538 co-relation queries the response was YES. Maximal size of possible extension queue 2582. Compared 548356 event pairs, 4246 based on Foata normal form. 1/40348 useless extension candidates. Maximal degree in co-relation 148779. Up to 8359 conditions per place. [2022-07-21 09:17:11,410 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 380 selfloop transitions, 72 changer transitions 12/533 dead transitions. [2022-07-21 09:17:11,411 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 533 transitions, 5956 flow [2022-07-21 09:17:11,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:17:11,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 09:17:11,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1580 transitions. [2022-07-21 09:17:11,415 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7155797101449275 [2022-07-21 09:17:11,415 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1580 transitions. [2022-07-21 09:17:11,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1580 transitions. [2022-07-21 09:17:11,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:17:11,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1580 transitions. [2022-07-21 09:17:11,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 98.75) internal successors, (1580), 16 states have internal predecessors, (1580), 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) [2022-07-21 09:17:11,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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) [2022-07-21 09:17:11,421 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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) [2022-07-21 09:17:11,422 INFO L186 Difference]: Start difference. First operand has 234 places, 243 transitions, 2204 flow. Second operand 16 states and 1580 transitions. [2022-07-21 09:17:11,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 533 transitions, 5956 flow [2022-07-21 09:17:13,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 533 transitions, 5681 flow, removed 133 selfloop flow, removed 5 redundant places. [2022-07-21 09:17:13,191 INFO L242 Difference]: Finished difference. Result has 254 places, 280 transitions, 2962 flow [2022-07-21 09:17:13,191 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2962, PETRI_PLACES=254, PETRI_TRANSITIONS=280} [2022-07-21 09:17:13,192 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 122 predicate places. [2022-07-21 09:17:13,192 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 280 transitions, 2962 flow [2022-07-21 09:17:13,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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) [2022-07-21 09:17:13,193 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:17:13,193 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:17:13,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 09:17:13,193 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 09:17:13,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:17:13,194 INFO L85 PathProgramCache]: Analyzing trace with hash -859018579, now seen corresponding path program 11 times [2022-07-21 09:17:13,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:17:13,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343266550] [2022-07-21 09:17:13,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:17:13,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:17:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:17:13,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:17:13,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:17:13,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343266550] [2022-07-21 09:17:13,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343266550] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:17:13,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:17:13,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-21 09:17:13,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133304266] [2022-07-21 09:17:13,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:17:13,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 09:17:13,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:17:13,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 09:17:13,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:17:13,912 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-07-21 09:17:13,913 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 280 transitions, 2962 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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) [2022-07-21 09:17:13,913 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:17:13,913 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-07-21 09:17:13,913 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:17:22,996 INFO L129 PetriNetUnfolder]: 14580/45845 cut-off events. [2022-07-21 09:17:22,996 INFO L130 PetriNetUnfolder]: For 341761/341761 co-relation queries the response was YES. [2022-07-21 09:17:23,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 179544 conditions, 45845 events. 14580/45845 cut-off events. For 341761/341761 co-relation queries the response was YES. Maximal size of possible extension queue 3131. Compared 643763 event pairs, 5024 based on Foata normal form. 1/45472 useless extension candidates. Maximal degree in co-relation 177301. Up to 7535 conditions per place. [2022-07-21 09:17:23,750 INFO L132 encePairwiseOnDemand]: 121/138 looper letters, 560 selfloop transitions, 124 changer transitions 11/764 dead transitions. [2022-07-21 09:17:23,750 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 764 transitions, 10991 flow [2022-07-21 09:17:23,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:17:23,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 09:17:23,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1567 transitions. [2022-07-21 09:17:23,772 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7096920289855072 [2022-07-21 09:17:23,772 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1567 transitions. [2022-07-21 09:17:23,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1567 transitions. [2022-07-21 09:17:23,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:17:23,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1567 transitions. [2022-07-21 09:17:23,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 97.9375) internal successors, (1567), 16 states have internal predecessors, (1567), 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) [2022-07-21 09:17:23,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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) [2022-07-21 09:17:23,778 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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) [2022-07-21 09:17:23,778 INFO L186 Difference]: Start difference. First operand has 254 places, 280 transitions, 2962 flow. Second operand 16 states and 1567 transitions. [2022-07-21 09:17:23,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 764 transitions, 10991 flow [2022-07-21 09:17:27,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 764 transitions, 10413 flow, removed 234 selfloop flow, removed 6 redundant places. [2022-07-21 09:17:27,098 INFO L242 Difference]: Finished difference. Result has 273 places, 364 transitions, 4693 flow [2022-07-21 09:17:27,099 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=2794, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4693, PETRI_PLACES=273, PETRI_TRANSITIONS=364} [2022-07-21 09:17:27,099 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 141 predicate places. [2022-07-21 09:17:27,099 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 364 transitions, 4693 flow [2022-07-21 09:17:27,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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) [2022-07-21 09:17:27,100 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:17:27,101 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:17:27,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 09:17:27,101 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 09:17:27,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:17:27,101 INFO L85 PathProgramCache]: Analyzing trace with hash -980182085, now seen corresponding path program 12 times [2022-07-21 09:17:27,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:17:27,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395341302] [2022-07-21 09:17:27,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:17:27,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:17:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:17:27,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:17:27,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:17:27,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395341302] [2022-07-21 09:17:27,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395341302] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:17:27,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:17:27,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-21 09:17:27,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288733538] [2022-07-21 09:17:27,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:17:27,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 09:17:27,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:17:27,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 09:17:27,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:17:27,748 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-07-21 09:17:27,749 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 364 transitions, 4693 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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) [2022-07-21 09:17:27,749 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:17:27,749 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-07-21 09:17:27,749 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand