./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-word-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/chl-word-subst.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 98c397d7a260fe673f9e4655b5dca942c114f9b11115010a8eef60e068615ab1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:25:41,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:25:41,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:25:41,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:25:41,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:25:41,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:25:41,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:25:41,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:25:41,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:25:41,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:25:41,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:25:41,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:25:41,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:25:41,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:25:41,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:25:41,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:25:41,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:25:41,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:25:41,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:25:41,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:25:41,143 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:25:41,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:25:41,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:25:41,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:25:41,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:25:41,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:25:41,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:25:41,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:25:41,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:25:41,156 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:25:41,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:25:41,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:25:41,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:25:41,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:25:41,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:25:41,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:25:41,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:25:41,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:25:41,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:25:41,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:25:41,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:25:41,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:25:41,163 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:25:41,180 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:25:41,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:25:41,181 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:25:41,181 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:25:41,181 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:25:41,181 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:25:41,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:25:41,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:25:41,182 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:25:41,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:25:41,183 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:25:41,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:25:41,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:25:41,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:25:41,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:25:41,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:25:41,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:25:41,192 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:25:41,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:25:41,192 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:25:41,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:25:41,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:25:41,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:25:41,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:25:41,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:25:41,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:25:41,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:25:41,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:25:41,193 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:25:41,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:25:41,194 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:25:41,194 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:25:41,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:25:41,194 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98c397d7a260fe673f9e4655b5dca942c114f9b11115010a8eef60e068615ab1 [2022-07-12 10:25:41,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:25:41,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:25:41,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:25:41,407 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:25:41,408 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:25:41,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2022-07-12 10:25:41,457 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d44777fd3/c03cd1932f35400897f6be4f50706fda/FLAG195292576 [2022-07-12 10:25:41,813 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:25:41,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2022-07-12 10:25:41,820 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d44777fd3/c03cd1932f35400897f6be4f50706fda/FLAG195292576 [2022-07-12 10:25:42,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d44777fd3/c03cd1932f35400897f6be4f50706fda [2022-07-12 10:25:42,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:25:42,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:25:42,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:25:42,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:25:42,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:25:42,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:25:42" (1/1) ... [2022-07-12 10:25:42,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4606ee70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:42, skipping insertion in model container [2022-07-12 10:25:42,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:25:42" (1/1) ... [2022-07-12 10:25:42,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:25:42,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:25:42,398 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/chl-word-subst.wvr.c[3345,3358] [2022-07-12 10:25:42,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:25:42,421 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:25:42,438 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/chl-word-subst.wvr.c[3345,3358] [2022-07-12 10:25:42,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:25:42,456 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:25:42,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:42 WrapperNode [2022-07-12 10:25:42,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:25:42,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:25:42,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:25:42,458 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:25:42,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:42" (1/1) ... [2022-07-12 10:25:42,469 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:42" (1/1) ... [2022-07-12 10:25:42,491 INFO L137 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 176 [2022-07-12 10:25:42,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:25:42,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:25:42,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:25:42,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:25:42,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:42" (1/1) ... [2022-07-12 10:25:42,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:42" (1/1) ... [2022-07-12 10:25:42,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:42" (1/1) ... [2022-07-12 10:25:42,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:42" (1/1) ... [2022-07-12 10:25:42,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:42" (1/1) ... [2022-07-12 10:25:42,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:42" (1/1) ... [2022-07-12 10:25:42,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:42" (1/1) ... [2022-07-12 10:25:42,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:25:42,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:25:42,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:25:42,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:25:42,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:42" (1/1) ... [2022-07-12 10:25:42,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:25:42,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:25:42,567 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) [2022-07-12 10:25:42,568 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 [2022-07-12 10:25:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:25:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:25:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:25:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:25:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:25:42,590 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:25:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:25:42,590 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:25:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-12 10:25:42,590 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-12 10:25:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:25:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:25:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:25:42,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:25:42,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:25:42,592 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:25:42,654 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:25:42,655 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:25:42,994 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:25:43,002 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:25:43,003 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-12 10:25:43,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:25:43 BoogieIcfgContainer [2022-07-12 10:25:43,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:25:43,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:25:43,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:25:43,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:25:43,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:25:42" (1/3) ... [2022-07-12 10:25:43,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd4f116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:25:43, skipping insertion in model container [2022-07-12 10:25:43,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:42" (2/3) ... [2022-07-12 10:25:43,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd4f116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:25:43, skipping insertion in model container [2022-07-12 10:25:43,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:25:43" (3/3) ... [2022-07-12 10:25:43,016 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2022-07-12 10:25:43,020 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:25:43,026 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:25:43,026 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:25:43,026 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:25:43,094 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-12 10:25:43,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 315 places, 340 transitions, 704 flow [2022-07-12 10:25:43,237 INFO L129 PetriNetUnfolder]: 35/337 cut-off events. [2022-07-12 10:25:43,237 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:25:43,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 337 events. 35/337 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 508 event pairs, 0 based on Foata normal form. 0/301 useless extension candidates. Maximal degree in co-relation 261. Up to 3 conditions per place. [2022-07-12 10:25:43,244 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 340 transitions, 704 flow [2022-07-12 10:25:43,250 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 301 places, 326 transitions, 670 flow [2022-07-12 10:25:43,259 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:25:43,264 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@5cdc8740, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@a26cf3a [2022-07-12 10:25:43,264 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-12 10:25:43,326 INFO L129 PetriNetUnfolder]: 35/325 cut-off events. [2022-07-12 10:25:43,327 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:25:43,327 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:43,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:43,328 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 1 more)] === [2022-07-12 10:25:43,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:43,332 INFO L85 PathProgramCache]: Analyzing trace with hash -99870110, now seen corresponding path program 1 times [2022-07-12 10:25:43,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:43,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705413166] [2022-07-12 10:25:43,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:43,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:43,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:43,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:43,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705413166] [2022-07-12 10:25:43,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705413166] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:43,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:43,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:25:43,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682648923] [2022-07-12 10:25:43,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:43,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 10:25:43,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:43,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 10:25:43,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 10:25:43,654 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 340 [2022-07-12 10:25:43,660 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 326 transitions, 670 flow. Second operand has 2 states, 2 states have (on average 323.5) internal successors, (647), 2 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:43,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:43,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 340 [2022-07-12 10:25:43,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:43,749 INFO L129 PetriNetUnfolder]: 21/312 cut-off events. [2022-07-12 10:25:43,749 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-07-12 10:25:43,753 INFO L84 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 312 events. 21/312 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 492 event pairs, 0 based on Foata normal form. 20/303 useless extension candidates. Maximal degree in co-relation 252. Up to 7 conditions per place. [2022-07-12 10:25:43,755 INFO L132 encePairwiseOnDemand]: 326/340 looper letters, 6 selfloop transitions, 0 changer transitions 8/312 dead transitions. [2022-07-12 10:25:43,755 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 312 transitions, 654 flow [2022-07-12 10:25:43,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 10:25:43,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-12 10:25:43,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 658 transitions. [2022-07-12 10:25:43,770 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9676470588235294 [2022-07-12 10:25:43,771 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 658 transitions. [2022-07-12 10:25:43,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 658 transitions. [2022-07-12 10:25:43,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:43,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 658 transitions. [2022-07-12 10:25:43,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 329.0) internal successors, (658), 2 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:43,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:43,792 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:43,794 INFO L186 Difference]: Start difference. First operand has 301 places, 326 transitions, 670 flow. Second operand 2 states and 658 transitions. [2022-07-12 10:25:43,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 312 transitions, 654 flow [2022-07-12 10:25:43,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 312 transitions, 642 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-12 10:25:43,805 INFO L242 Difference]: Finished difference. Result has 296 places, 304 transitions, 614 flow [2022-07-12 10:25:43,806 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=614, PETRI_PLACES=296, PETRI_TRANSITIONS=304} [2022-07-12 10:25:43,809 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, -5 predicate places. [2022-07-12 10:25:43,809 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 304 transitions, 614 flow [2022-07-12 10:25:43,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 323.5) internal successors, (647), 2 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:43,810 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:43,810 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:43,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:25:43,811 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 1 more)] === [2022-07-12 10:25:43,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:43,812 INFO L85 PathProgramCache]: Analyzing trace with hash -727196831, now seen corresponding path program 1 times [2022-07-12 10:25:43,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:43,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891238525] [2022-07-12 10:25:43,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:43,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:43,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:43,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:43,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891238525] [2022-07-12 10:25:43,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891238525] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:43,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:43,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:25:43,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088344504] [2022-07-12 10:25:43,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:43,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:25:43,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:43,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:25:43,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:25:43,948 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 340 [2022-07-12 10:25:43,949 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 304 transitions, 614 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:43,949 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:43,949 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 340 [2022-07-12 10:25:43,949 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:44,025 INFO L129 PetriNetUnfolder]: 51/490 cut-off events. [2022-07-12 10:25:44,025 INFO L130 PetriNetUnfolder]: For 7/9 co-relation queries the response was YES. [2022-07-12 10:25:44,027 INFO L84 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 490 events. 51/490 cut-off events. For 7/9 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1501 event pairs, 4 based on Foata normal form. 0/446 useless extension candidates. Maximal degree in co-relation 538. Up to 22 conditions per place. [2022-07-12 10:25:44,029 INFO L132 encePairwiseOnDemand]: 337/340 looper letters, 14 selfloop transitions, 2 changer transitions 0/310 dead transitions. [2022-07-12 10:25:44,029 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 310 transitions, 663 flow [2022-07-12 10:25:44,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:25:44,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:25:44,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 962 transitions. [2022-07-12 10:25:44,031 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9431372549019608 [2022-07-12 10:25:44,031 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 962 transitions. [2022-07-12 10:25:44,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 962 transitions. [2022-07-12 10:25:44,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:44,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 962 transitions. [2022-07-12 10:25:44,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:44,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:44,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:44,036 INFO L186 Difference]: Start difference. First operand has 296 places, 304 transitions, 614 flow. Second operand 3 states and 962 transitions. [2022-07-12 10:25:44,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 310 transitions, 663 flow [2022-07-12 10:25:44,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 310 transitions, 663 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:25:44,042 INFO L242 Difference]: Finished difference. Result has 291 places, 304 transitions, 622 flow [2022-07-12 10:25:44,043 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=622, PETRI_PLACES=291, PETRI_TRANSITIONS=304} [2022-07-12 10:25:44,044 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, -10 predicate places. [2022-07-12 10:25:44,044 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 304 transitions, 622 flow [2022-07-12 10:25:44,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:44,045 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:44,045 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:44,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:25:44,046 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 1 more)] === [2022-07-12 10:25:44,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:44,047 INFO L85 PathProgramCache]: Analyzing trace with hash -733854043, now seen corresponding path program 1 times [2022-07-12 10:25:44,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:44,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658076329] [2022-07-12 10:25:44,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:44,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:44,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:44,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:44,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658076329] [2022-07-12 10:25:44,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658076329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:44,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:44,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:44,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346169304] [2022-07-12 10:25:44,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:44,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:44,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:44,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:44,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:44,210 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-12 10:25:44,211 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 304 transitions, 622 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:44,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:44,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-12 10:25:44,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:44,762 INFO L129 PetriNetUnfolder]: 799/4113 cut-off events. [2022-07-12 10:25:44,762 INFO L130 PetriNetUnfolder]: For 133/133 co-relation queries the response was YES. [2022-07-12 10:25:44,772 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4922 conditions, 4113 events. 799/4113 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 40332 event pairs, 130 based on Foata normal form. 0/3452 useless extension candidates. Maximal degree in co-relation 4917. Up to 261 conditions per place. [2022-07-12 10:25:44,783 INFO L132 encePairwiseOnDemand]: 332/340 looper letters, 56 selfloop transitions, 10 changer transitions 0/346 dead transitions. [2022-07-12 10:25:44,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 346 transitions, 851 flow [2022-07-12 10:25:44,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:25:44,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:25:44,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1572 transitions. [2022-07-12 10:25:44,786 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9247058823529412 [2022-07-12 10:25:44,786 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1572 transitions. [2022-07-12 10:25:44,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1572 transitions. [2022-07-12 10:25:44,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:44,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1572 transitions. [2022-07-12 10:25:44,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 314.4) internal successors, (1572), 5 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:44,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:44,796 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:44,796 INFO L186 Difference]: Start difference. First operand has 291 places, 304 transitions, 622 flow. Second operand 5 states and 1572 transitions. [2022-07-12 10:25:44,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 346 transitions, 851 flow [2022-07-12 10:25:44,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 346 transitions, 847 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:44,803 INFO L242 Difference]: Finished difference. Result has 297 places, 314 transitions, 694 flow [2022-07-12 10:25:44,804 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=694, PETRI_PLACES=297, PETRI_TRANSITIONS=314} [2022-07-12 10:25:44,805 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, -4 predicate places. [2022-07-12 10:25:44,806 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 314 transitions, 694 flow [2022-07-12 10:25:44,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:44,806 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:44,806 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:44,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:25:44,807 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 1 more)] === [2022-07-12 10:25:44,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:44,808 INFO L85 PathProgramCache]: Analyzing trace with hash 832788273, now seen corresponding path program 2 times [2022-07-12 10:25:44,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:44,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804212172] [2022-07-12 10:25:44,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:44,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:44,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:44,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:44,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804212172] [2022-07-12 10:25:44,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804212172] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:44,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:44,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:44,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600986835] [2022-07-12 10:25:44,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:44,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:44,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:44,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:44,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:44,894 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-12 10:25:44,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 314 transitions, 694 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:44,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:44,896 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-12 10:25:44,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:45,370 INFO L129 PetriNetUnfolder]: 745/4011 cut-off events. [2022-07-12 10:25:45,370 INFO L130 PetriNetUnfolder]: For 663/678 co-relation queries the response was YES. [2022-07-12 10:25:45,385 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5291 conditions, 4011 events. 745/4011 cut-off events. For 663/678 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 38998 event pairs, 139 based on Foata normal form. 19/3668 useless extension candidates. Maximal degree in co-relation 5283. Up to 238 conditions per place. [2022-07-12 10:25:45,424 INFO L132 encePairwiseOnDemand]: 330/340 looper letters, 80 selfloop transitions, 16 changer transitions 0/376 dead transitions. [2022-07-12 10:25:45,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 376 transitions, 1102 flow [2022-07-12 10:25:45,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:25:45,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:25:45,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2191 transitions. [2022-07-12 10:25:45,428 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9205882352941176 [2022-07-12 10:25:45,428 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2191 transitions. [2022-07-12 10:25:45,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2191 transitions. [2022-07-12 10:25:45,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:45,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2191 transitions. [2022-07-12 10:25:45,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:45,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:45,436 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:45,436 INFO L186 Difference]: Start difference. First operand has 297 places, 314 transitions, 694 flow. Second operand 7 states and 2191 transitions. [2022-07-12 10:25:45,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 376 transitions, 1102 flow [2022-07-12 10:25:45,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 376 transitions, 1102 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:25:45,442 INFO L242 Difference]: Finished difference. Result has 307 places, 329 transitions, 835 flow [2022-07-12 10:25:45,443 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=835, PETRI_PLACES=307, PETRI_TRANSITIONS=329} [2022-07-12 10:25:45,444 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 6 predicate places. [2022-07-12 10:25:45,447 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 329 transitions, 835 flow [2022-07-12 10:25:45,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:45,448 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:45,448 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:45,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:25:45,449 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 1 more)] === [2022-07-12 10:25:45,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:45,449 INFO L85 PathProgramCache]: Analyzing trace with hash -234720043, now seen corresponding path program 1 times [2022-07-12 10:25:45,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:45,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756626870] [2022-07-12 10:25:45,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:45,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:45,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:45,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:45,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756626870] [2022-07-12 10:25:45,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756626870] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:45,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:45,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:25:45,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293121210] [2022-07-12 10:25:45,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:45,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:25:45,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:45,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:25:45,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:25:45,536 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-12 10:25:45,538 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 329 transitions, 835 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:45,538 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:45,538 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-12 10:25:45,538 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:46,006 INFO L129 PetriNetUnfolder]: 733/4270 cut-off events. [2022-07-12 10:25:46,007 INFO L130 PetriNetUnfolder]: For 1736/1751 co-relation queries the response was YES. [2022-07-12 10:25:46,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6190 conditions, 4270 events. 733/4270 cut-off events. For 1736/1751 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 42774 event pairs, 258 based on Foata normal form. 16/3896 useless extension candidates. Maximal degree in co-relation 6177. Up to 449 conditions per place. [2022-07-12 10:25:46,034 INFO L132 encePairwiseOnDemand]: 335/340 looper letters, 67 selfloop transitions, 13 changer transitions 0/360 dead transitions. [2022-07-12 10:25:46,035 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 360 transitions, 1150 flow [2022-07-12 10:25:46,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:25:46,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:25:46,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1248 transitions. [2022-07-12 10:25:46,037 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9176470588235294 [2022-07-12 10:25:46,037 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1248 transitions. [2022-07-12 10:25:46,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1248 transitions. [2022-07-12 10:25:46,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:46,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1248 transitions. [2022-07-12 10:25:46,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,042 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,042 INFO L186 Difference]: Start difference. First operand has 307 places, 329 transitions, 835 flow. Second operand 4 states and 1248 transitions. [2022-07-12 10:25:46,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 360 transitions, 1150 flow [2022-07-12 10:25:46,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 360 transitions, 1150 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:25:46,052 INFO L242 Difference]: Finished difference. Result has 312 places, 333 transitions, 914 flow [2022-07-12 10:25:46,053 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=914, PETRI_PLACES=312, PETRI_TRANSITIONS=333} [2022-07-12 10:25:46,053 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 11 predicate places. [2022-07-12 10:25:46,053 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 333 transitions, 914 flow [2022-07-12 10:25:46,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,054 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:46,054 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:46,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:25:46,054 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 1 more)] === [2022-07-12 10:25:46,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:46,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1046285933, now seen corresponding path program 2 times [2022-07-12 10:25:46,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:46,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299027748] [2022-07-12 10:25:46,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:46,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:46,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:46,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:46,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299027748] [2022-07-12 10:25:46,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299027748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:46,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:46,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:25:46,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960699915] [2022-07-12 10:25:46,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:46,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:25:46,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:46,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:25:46,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:25:46,151 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-12 10:25:46,152 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 333 transitions, 914 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,152 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:46,152 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-12 10:25:46,152 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:46,727 INFO L129 PetriNetUnfolder]: 789/4644 cut-off events. [2022-07-12 10:25:46,727 INFO L130 PetriNetUnfolder]: For 2705/2705 co-relation queries the response was YES. [2022-07-12 10:25:46,744 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6741 conditions, 4644 events. 789/4644 cut-off events. For 2705/2705 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 47363 event pairs, 320 based on Foata normal form. 10/4210 useless extension candidates. Maximal degree in co-relation 6725. Up to 637 conditions per place. [2022-07-12 10:25:46,755 INFO L132 encePairwiseOnDemand]: 335/340 looper letters, 62 selfloop transitions, 12 changer transitions 0/354 dead transitions. [2022-07-12 10:25:46,756 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 354 transitions, 1164 flow [2022-07-12 10:25:46,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:25:46,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:25:46,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1249 transitions. [2022-07-12 10:25:46,758 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9183823529411764 [2022-07-12 10:25:46,759 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1249 transitions. [2022-07-12 10:25:46,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1249 transitions. [2022-07-12 10:25:46,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:46,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1249 transitions. [2022-07-12 10:25:46,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 312.25) internal successors, (1249), 4 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,763 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,763 INFO L186 Difference]: Start difference. First operand has 312 places, 333 transitions, 914 flow. Second operand 4 states and 1249 transitions. [2022-07-12 10:25:46,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 354 transitions, 1164 flow [2022-07-12 10:25:46,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 354 transitions, 1151 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:25:46,775 INFO L242 Difference]: Finished difference. Result has 316 places, 337 transitions, 995 flow [2022-07-12 10:25:46,775 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=995, PETRI_PLACES=316, PETRI_TRANSITIONS=337} [2022-07-12 10:25:46,777 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 15 predicate places. [2022-07-12 10:25:46,778 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 337 transitions, 995 flow [2022-07-12 10:25:46,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,778 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:46,778 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:46,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:25:46,779 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 1 more)] === [2022-07-12 10:25:46,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:46,779 INFO L85 PathProgramCache]: Analyzing trace with hash -95565999, now seen corresponding path program 3 times [2022-07-12 10:25:46,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:46,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825067959] [2022-07-12 10:25:46,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:46,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:46,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:46,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:46,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825067959] [2022-07-12 10:25:46,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825067959] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:46,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:46,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:46,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959759495] [2022-07-12 10:25:46,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:46,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:46,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:46,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:46,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:46,854 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-12 10:25:46,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 337 transitions, 995 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:46,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-12 10:25:46,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:47,443 INFO L129 PetriNetUnfolder]: 772/4816 cut-off events. [2022-07-12 10:25:47,444 INFO L130 PetriNetUnfolder]: For 3449/3449 co-relation queries the response was YES. [2022-07-12 10:25:47,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7283 conditions, 4816 events. 772/4816 cut-off events. For 3449/3449 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 50147 event pairs, 141 based on Foata normal form. 12/4445 useless extension candidates. Maximal degree in co-relation 7265. Up to 254 conditions per place. [2022-07-12 10:25:47,472 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 87 selfloop transitions, 30 changer transitions 0/397 dead transitions. [2022-07-12 10:25:47,473 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 397 transitions, 1603 flow [2022-07-12 10:25:47,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:25:47,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:25:47,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2193 transitions. [2022-07-12 10:25:47,476 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9214285714285714 [2022-07-12 10:25:47,477 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2193 transitions. [2022-07-12 10:25:47,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2193 transitions. [2022-07-12 10:25:47,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:47,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2193 transitions. [2022-07-12 10:25:47,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 313.2857142857143) internal successors, (2193), 7 states have internal predecessors, (2193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:47,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:47,485 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:47,485 INFO L186 Difference]: Start difference. First operand has 316 places, 337 transitions, 995 flow. Second operand 7 states and 2193 transitions. [2022-07-12 10:25:47,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 397 transitions, 1603 flow [2022-07-12 10:25:47,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 397 transitions, 1583 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-12 10:25:47,498 INFO L242 Difference]: Finished difference. Result has 325 places, 352 transitions, 1280 flow [2022-07-12 10:25:47,498 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1280, PETRI_PLACES=325, PETRI_TRANSITIONS=352} [2022-07-12 10:25:47,499 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 24 predicate places. [2022-07-12 10:25:47,499 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 352 transitions, 1280 flow [2022-07-12 10:25:47,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:47,499 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:47,500 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:47,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:25:47,500 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 1 more)] === [2022-07-12 10:25:47,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:47,501 INFO L85 PathProgramCache]: Analyzing trace with hash -950907661, now seen corresponding path program 4 times [2022-07-12 10:25:47,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:47,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548658363] [2022-07-12 10:25:47,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:47,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:47,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:47,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:47,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548658363] [2022-07-12 10:25:47,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548658363] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:47,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:47,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:47,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137906403] [2022-07-12 10:25:47,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:47,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:47,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:47,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:47,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:47,574 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-12 10:25:47,576 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 352 transitions, 1280 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:47,576 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:47,576 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-12 10:25:47,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:48,191 INFO L129 PetriNetUnfolder]: 780/4867 cut-off events. [2022-07-12 10:25:48,191 INFO L130 PetriNetUnfolder]: For 4756/4762 co-relation queries the response was YES. [2022-07-12 10:25:48,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7848 conditions, 4867 events. 780/4867 cut-off events. For 4756/4762 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 51689 event pairs, 242 based on Foata normal form. 4/4455 useless extension candidates. Maximal degree in co-relation 7826. Up to 323 conditions per place. [2022-07-12 10:25:48,245 INFO L132 encePairwiseOnDemand]: 332/340 looper letters, 82 selfloop transitions, 43 changer transitions 0/405 dead transitions. [2022-07-12 10:25:48,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 405 transitions, 1954 flow [2022-07-12 10:25:48,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:25:48,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:25:48,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1573 transitions. [2022-07-12 10:25:48,249 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9252941176470588 [2022-07-12 10:25:48,249 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1573 transitions. [2022-07-12 10:25:48,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1573 transitions. [2022-07-12 10:25:48,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:48,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1573 transitions. [2022-07-12 10:25:48,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 314.6) internal successors, (1573), 5 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:48,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:48,257 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:48,257 INFO L186 Difference]: Start difference. First operand has 325 places, 352 transitions, 1280 flow. Second operand 5 states and 1573 transitions. [2022-07-12 10:25:48,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 405 transitions, 1954 flow [2022-07-12 10:25:48,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 405 transitions, 1920 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:48,281 INFO L242 Difference]: Finished difference. Result has 331 places, 368 transitions, 1659 flow [2022-07-12 10:25:48,282 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1659, PETRI_PLACES=331, PETRI_TRANSITIONS=368} [2022-07-12 10:25:48,282 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 30 predicate places. [2022-07-12 10:25:48,282 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 368 transitions, 1659 flow [2022-07-12 10:25:48,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:48,283 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:48,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:48,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:25:48,284 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 1 more)] === [2022-07-12 10:25:48,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:48,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1282439913, now seen corresponding path program 5 times [2022-07-12 10:25:48,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:48,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939506957] [2022-07-12 10:25:48,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:48,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:48,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:48,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:48,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939506957] [2022-07-12 10:25:48,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939506957] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:48,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:48,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:48,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209741668] [2022-07-12 10:25:48,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:48,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:48,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:48,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:48,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:48,344 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-12 10:25:48,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 368 transitions, 1659 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:48,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:48,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-12 10:25:48,346 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:48,973 INFO L129 PetriNetUnfolder]: 824/5165 cut-off events. [2022-07-12 10:25:48,974 INFO L130 PetriNetUnfolder]: For 7229/7235 co-relation queries the response was YES. [2022-07-12 10:25:49,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8761 conditions, 5165 events. 824/5165 cut-off events. For 7229/7235 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 56330 event pairs, 279 based on Foata normal form. 8/4737 useless extension candidates. Maximal degree in co-relation 8736. Up to 420 conditions per place. [2022-07-12 10:25:49,044 INFO L132 encePairwiseOnDemand]: 332/340 looper letters, 97 selfloop transitions, 29 changer transitions 0/406 dead transitions. [2022-07-12 10:25:49,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 406 transitions, 2198 flow [2022-07-12 10:25:49,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:25:49,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:25:49,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1568 transitions. [2022-07-12 10:25:49,047 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9223529411764706 [2022-07-12 10:25:49,047 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1568 transitions. [2022-07-12 10:25:49,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1568 transitions. [2022-07-12 10:25:49,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:49,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1568 transitions. [2022-07-12 10:25:49,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 313.6) internal successors, (1568), 5 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:49,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:49,054 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:49,054 INFO L186 Difference]: Start difference. First operand has 331 places, 368 transitions, 1659 flow. Second operand 5 states and 1568 transitions. [2022-07-12 10:25:49,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 406 transitions, 2198 flow [2022-07-12 10:25:49,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 406 transitions, 2198 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:25:49,090 INFO L242 Difference]: Finished difference. Result has 338 places, 375 transitions, 1877 flow [2022-07-12 10:25:49,091 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1659, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1877, PETRI_PLACES=338, PETRI_TRANSITIONS=375} [2022-07-12 10:25:49,092 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 37 predicate places. [2022-07-12 10:25:49,092 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 375 transitions, 1877 flow [2022-07-12 10:25:49,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:49,093 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:49,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:49,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:25:49,093 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 1 more)] === [2022-07-12 10:25:49,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:49,094 INFO L85 PathProgramCache]: Analyzing trace with hash -277259783, now seen corresponding path program 3 times [2022-07-12 10:25:49,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:49,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213677801] [2022-07-12 10:25:49,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:49,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:49,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:49,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:49,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213677801] [2022-07-12 10:25:49,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213677801] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:49,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:49,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:25:49,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582351746] [2022-07-12 10:25:49,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:49,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:25:49,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:49,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:25:49,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:25:49,146 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-12 10:25:49,147 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 375 transitions, 1877 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:49,147 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:49,147 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-12 10:25:49,147 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:50,066 INFO L129 PetriNetUnfolder]: 865/5533 cut-off events. [2022-07-12 10:25:50,067 INFO L130 PetriNetUnfolder]: For 9205/9209 co-relation queries the response was YES. [2022-07-12 10:25:50,096 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9407 conditions, 5533 events. 865/5533 cut-off events. For 9205/9209 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 60768 event pairs, 281 based on Foata normal form. 15/5060 useless extension candidates. Maximal degree in co-relation 9378. Up to 546 conditions per place. [2022-07-12 10:25:50,115 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 103 selfloop transitions, 38 changer transitions 0/421 dead transitions. [2022-07-12 10:25:50,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 421 transitions, 2505 flow [2022-07-12 10:25:50,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:25:50,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:25:50,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1570 transitions. [2022-07-12 10:25:50,119 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9235294117647059 [2022-07-12 10:25:50,119 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1570 transitions. [2022-07-12 10:25:50,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1570 transitions. [2022-07-12 10:25:50,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:50,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1570 transitions. [2022-07-12 10:25:50,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 314.0) internal successors, (1570), 5 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) [2022-07-12 10:25:50,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:50,126 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:50,126 INFO L186 Difference]: Start difference. First operand has 338 places, 375 transitions, 1877 flow. Second operand 5 states and 1570 transitions. [2022-07-12 10:25:50,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 421 transitions, 2505 flow [2022-07-12 10:25:50,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 421 transitions, 2478 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-07-12 10:25:50,161 INFO L242 Difference]: Finished difference. Result has 344 places, 383 transitions, 2101 flow [2022-07-12 10:25:50,162 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1857, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2101, PETRI_PLACES=344, PETRI_TRANSITIONS=383} [2022-07-12 10:25:50,163 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 43 predicate places. [2022-07-12 10:25:50,163 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 383 transitions, 2101 flow [2022-07-12 10:25:50,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:50,164 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:50,164 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:50,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:25:50,164 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 1 more)] === [2022-07-12 10:25:50,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:50,165 INFO L85 PathProgramCache]: Analyzing trace with hash 564015917, now seen corresponding path program 1 times [2022-07-12 10:25:50,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:50,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84691291] [2022-07-12 10:25:50,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:50,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:50,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:50,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:50,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84691291] [2022-07-12 10:25:50,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84691291] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:50,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:50,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:25:50,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199765006] [2022-07-12 10:25:50,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:50,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:25:50,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:50,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:25:50,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:25:50,221 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 340 [2022-07-12 10:25:50,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 383 transitions, 2101 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:50,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:50,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 340 [2022-07-12 10:25:50,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:50,748 INFO L129 PetriNetUnfolder]: 396/3680 cut-off events. [2022-07-12 10:25:50,748 INFO L130 PetriNetUnfolder]: For 7300/8783 co-relation queries the response was YES. [2022-07-12 10:25:50,787 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5678 conditions, 3680 events. 396/3680 cut-off events. For 7300/8783 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 38103 event pairs, 80 based on Foata normal form. 2/3362 useless extension candidates. Maximal degree in co-relation 5646. Up to 292 conditions per place. [2022-07-12 10:25:50,805 INFO L132 encePairwiseOnDemand]: 337/340 looper letters, 13 selfloop transitions, 2 changer transitions 0/388 dead transitions. [2022-07-12 10:25:50,805 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 388 transitions, 2145 flow [2022-07-12 10:25:50,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:25:50,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:25:50,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 961 transitions. [2022-07-12 10:25:50,809 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.942156862745098 [2022-07-12 10:25:50,809 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 961 transitions. [2022-07-12 10:25:50,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 961 transitions. [2022-07-12 10:25:50,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:50,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 961 transitions. [2022-07-12 10:25:50,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.3333333333333) internal successors, (961), 3 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:50,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:50,815 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:50,815 INFO L186 Difference]: Start difference. First operand has 344 places, 383 transitions, 2101 flow. Second operand 3 states and 961 transitions. [2022-07-12 10:25:50,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 388 transitions, 2145 flow [2022-07-12 10:25:50,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 388 transitions, 2123 flow, removed 11 selfloop flow, removed 0 redundant places. [2022-07-12 10:25:50,848 INFO L242 Difference]: Finished difference. Result has 347 places, 383 transitions, 2087 flow [2022-07-12 10:25:50,849 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2079, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2087, PETRI_PLACES=347, PETRI_TRANSITIONS=383} [2022-07-12 10:25:50,849 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 46 predicate places. [2022-07-12 10:25:50,849 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 383 transitions, 2087 flow [2022-07-12 10:25:50,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:50,850 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:50,852 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:50,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 10:25:50,852 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 1 more)] === [2022-07-12 10:25:50,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:50,853 INFO L85 PathProgramCache]: Analyzing trace with hash -242124393, now seen corresponding path program 1 times [2022-07-12 10:25:50,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:50,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929288917] [2022-07-12 10:25:50,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:50,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:50,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:50,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:50,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929288917] [2022-07-12 10:25:50,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929288917] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:50,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:50,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:25:50,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14891462] [2022-07-12 10:25:50,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:50,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:25:50,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:50,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:25:50,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:25:50,916 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 340 [2022-07-12 10:25:50,917 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 383 transitions, 2087 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:50,917 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:50,918 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 340 [2022-07-12 10:25:50,918 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:51,650 INFO L129 PetriNetUnfolder]: 600/5268 cut-off events. [2022-07-12 10:25:51,651 INFO L130 PetriNetUnfolder]: For 7949/9466 co-relation queries the response was YES. [2022-07-12 10:25:51,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7789 conditions, 5268 events. 600/5268 cut-off events. For 7949/9466 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 58662 event pairs, 147 based on Foata normal form. 8/4825 useless extension candidates. Maximal degree in co-relation 7755. Up to 421 conditions per place. [2022-07-12 10:25:51,697 INFO L132 encePairwiseOnDemand]: 337/340 looper letters, 12 selfloop transitions, 2 changer transitions 0/387 dead transitions. [2022-07-12 10:25:51,698 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 387 transitions, 2126 flow [2022-07-12 10:25:51,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:25:51,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:25:51,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 960 transitions. [2022-07-12 10:25:51,700 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9411764705882353 [2022-07-12 10:25:51,700 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 960 transitions. [2022-07-12 10:25:51,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 960 transitions. [2022-07-12 10:25:51,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:51,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 960 transitions. [2022-07-12 10:25:51,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:51,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:51,704 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:51,704 INFO L186 Difference]: Start difference. First operand has 347 places, 383 transitions, 2087 flow. Second operand 3 states and 960 transitions. [2022-07-12 10:25:51,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 387 transitions, 2126 flow [2022-07-12 10:25:51,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 387 transitions, 2122 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:51,739 INFO L242 Difference]: Finished difference. Result has 348 places, 383 transitions, 2091 flow [2022-07-12 10:25:51,740 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2083, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2091, PETRI_PLACES=348, PETRI_TRANSITIONS=383} [2022-07-12 10:25:51,742 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 47 predicate places. [2022-07-12 10:25:51,742 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 383 transitions, 2091 flow [2022-07-12 10:25:51,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:51,742 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:51,743 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:51,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 10:25:51,743 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:51,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:51,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1289668909, now seen corresponding path program 1 times [2022-07-12 10:25:51,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:51,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596635331] [2022-07-12 10:25:51,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:51,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:52,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:52,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:52,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596635331] [2022-07-12 10:25:52,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596635331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:52,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:52,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-07-12 10:25:52,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637155323] [2022-07-12 10:25:52,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:52,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-12 10:25:52,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:52,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-12 10:25:52,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2022-07-12 10:25:52,512 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 340 [2022-07-12 10:25:52,515 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 383 transitions, 2091 flow. Second operand has 24 states, 24 states have (on average 230.91666666666666) internal successors, (5542), 24 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:52,515 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:52,515 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 340 [2022-07-12 10:25:52,516 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:05,689 INFO L129 PetriNetUnfolder]: 18929/82414 cut-off events. [2022-07-12 10:26:05,689 INFO L130 PetriNetUnfolder]: For 37631/44781 co-relation queries the response was YES. [2022-07-12 10:26:06,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123087 conditions, 82414 events. 18929/82414 cut-off events. For 37631/44781 co-relation queries the response was YES. Maximal size of possible extension queue 3493. Compared 1350561 event pairs, 9058 based on Foata normal form. 39/70218 useless extension candidates. Maximal degree in co-relation 123052. Up to 5923 conditions per place. [2022-07-12 10:26:06,617 INFO L132 encePairwiseOnDemand]: 305/340 looper letters, 250 selfloop transitions, 42 changer transitions 12/598 dead transitions. [2022-07-12 10:26:06,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 598 transitions, 3160 flow [2022-07-12 10:26:06,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-12 10:26:06,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-07-12 10:26:06,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 9197 transitions. [2022-07-12 10:26:06,632 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6935897435897436 [2022-07-12 10:26:06,632 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 9197 transitions. [2022-07-12 10:26:06,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 9197 transitions. [2022-07-12 10:26:06,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:06,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 9197 transitions. [2022-07-12 10:26:06,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 235.82051282051282) internal successors, (9197), 39 states have internal predecessors, (9197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:06,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 340.0) internal successors, (13600), 40 states have internal predecessors, (13600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:06,665 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 340.0) internal successors, (13600), 40 states have internal predecessors, (13600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:06,666 INFO L186 Difference]: Start difference. First operand has 348 places, 383 transitions, 2091 flow. Second operand 39 states and 9197 transitions. [2022-07-12 10:26:06,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 598 transitions, 3160 flow [2022-07-12 10:26:06,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 598 transitions, 3156 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:26:06,812 INFO L242 Difference]: Finished difference. Result has 399 places, 413 transitions, 2312 flow [2022-07-12 10:26:06,813 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2087, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=2312, PETRI_PLACES=399, PETRI_TRANSITIONS=413} [2022-07-12 10:26:06,814 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 98 predicate places. [2022-07-12 10:26:06,814 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 413 transitions, 2312 flow [2022-07-12 10:26:06,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 230.91666666666666) internal successors, (5542), 24 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:06,815 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:06,815 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:06,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 10:26:06,816 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:06,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:06,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1065805489, now seen corresponding path program 1 times [2022-07-12 10:26:06,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:06,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439200764] [2022-07-12 10:26:06,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:06,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:06,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:06,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:06,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439200764] [2022-07-12 10:26:06,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439200764] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:06,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:06,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:26:06,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008004068] [2022-07-12 10:26:06,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:06,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:26:06,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:06,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:26:06,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:26:06,853 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-12 10:26:06,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 413 transitions, 2312 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:06,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:06,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-12 10:26:06,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:11,521 INFO L129 PetriNetUnfolder]: 3751/31556 cut-off events. [2022-07-12 10:26:11,521 INFO L130 PetriNetUnfolder]: For 54047/54849 co-relation queries the response was YES. [2022-07-12 10:26:11,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56572 conditions, 31556 events. 3751/31556 cut-off events. For 54047/54849 co-relation queries the response was YES. Maximal size of possible extension queue 1305. Compared 492579 event pairs, 1025 based on Foata normal form. 58/29857 useless extension candidates. Maximal degree in co-relation 56522. Up to 2390 conditions per place. [2022-07-12 10:26:11,959 INFO L132 encePairwiseOnDemand]: 332/340 looper letters, 88 selfloop transitions, 49 changer transitions 0/447 dead transitions. [2022-07-12 10:26:11,959 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 447 transitions, 2834 flow [2022-07-12 10:26:11,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:26:11,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:26:11,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1569 transitions. [2022-07-12 10:26:11,962 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9229411764705883 [2022-07-12 10:26:11,963 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1569 transitions. [2022-07-12 10:26:11,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1569 transitions. [2022-07-12 10:26:11,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:11,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1569 transitions. [2022-07-12 10:26:11,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 313.8) internal successors, (1569), 5 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:11,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:11,968 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:11,968 INFO L186 Difference]: Start difference. First operand has 399 places, 413 transitions, 2312 flow. Second operand 5 states and 1569 transitions. [2022-07-12 10:26:11,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 447 transitions, 2834 flow [2022-07-12 10:26:12,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 447 transitions, 2818 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-07-12 10:26:12,467 INFO L242 Difference]: Finished difference. Result has 395 places, 420 transitions, 2550 flow [2022-07-12 10:26:12,468 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2296, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2550, PETRI_PLACES=395, PETRI_TRANSITIONS=420} [2022-07-12 10:26:12,468 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 94 predicate places. [2022-07-12 10:26:12,468 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 420 transitions, 2550 flow [2022-07-12 10:26:12,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:12,469 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:12,469 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:12,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 10:26:12,469 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:12,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:12,470 INFO L85 PathProgramCache]: Analyzing trace with hash 2134147165, now seen corresponding path program 2 times [2022-07-12 10:26:12,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:12,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380955590] [2022-07-12 10:26:12,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:12,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:13,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:13,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:13,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380955590] [2022-07-12 10:26:13,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380955590] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:13,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:13,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-12 10:26:13,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926062801] [2022-07-12 10:26:13,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:13,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-12 10:26:13,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:13,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-12 10:26:13,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-07-12 10:26:13,066 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 340 [2022-07-12 10:26:13,070 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 420 transitions, 2550 flow. Second operand has 27 states, 27 states have (on average 230.59259259259258) internal successors, (6226), 27 states have internal predecessors, (6226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:13,071 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:13,071 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 340 [2022-07-12 10:26:13,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:27,018 INFO L129 PetriNetUnfolder]: 18156/83905 cut-off events. [2022-07-12 10:26:27,018 INFO L130 PetriNetUnfolder]: For 56636/66431 co-relation queries the response was YES. [2022-07-12 10:26:28,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131427 conditions, 83905 events. 18156/83905 cut-off events. For 56636/66431 co-relation queries the response was YES. Maximal size of possible extension queue 3531. Compared 1400739 event pairs, 9714 based on Foata normal form. 51/72391 useless extension candidates. Maximal degree in co-relation 131376. Up to 11627 conditions per place. [2022-07-12 10:26:28,555 INFO L132 encePairwiseOnDemand]: 304/340 looper letters, 224 selfloop transitions, 38 changer transitions 12/575 dead transitions. [2022-07-12 10:26:28,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 575 transitions, 3478 flow [2022-07-12 10:26:28,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 10:26:28,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-12 10:26:28,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 8252 transitions. [2022-07-12 10:26:28,567 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6934453781512605 [2022-07-12 10:26:28,567 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 8252 transitions. [2022-07-12 10:26:28,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 8252 transitions. [2022-07-12 10:26:28,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:28,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 8252 transitions. [2022-07-12 10:26:28,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 235.77142857142857) internal successors, (8252), 35 states have internal predecessors, (8252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:28,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 340.0) internal successors, (12240), 36 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:28,600 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 340.0) internal successors, (12240), 36 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:28,601 INFO L186 Difference]: Start difference. First operand has 395 places, 420 transitions, 2550 flow. Second operand 35 states and 8252 transitions. [2022-07-12 10:26:28,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 575 transitions, 3478 flow [2022-07-12 10:26:28,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 575 transitions, 3426 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-07-12 10:26:28,927 INFO L242 Difference]: Finished difference. Result has 432 places, 422 transitions, 2601 flow [2022-07-12 10:26:28,928 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2498, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2601, PETRI_PLACES=432, PETRI_TRANSITIONS=422} [2022-07-12 10:26:28,928 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 131 predicate places. [2022-07-12 10:26:28,928 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 422 transitions, 2601 flow [2022-07-12 10:26:28,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 230.59259259259258) internal successors, (6226), 27 states have internal predecessors, (6226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:28,930 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:28,930 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:28,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 10:26:28,930 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:28,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:28,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1031024553, now seen corresponding path program 1 times [2022-07-12 10:26:28,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:28,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744622083] [2022-07-12 10:26:28,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:28,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:28,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:28,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:28,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744622083] [2022-07-12 10:26:28,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744622083] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:28,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:28,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:26:28,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938390440] [2022-07-12 10:26:28,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:28,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:26:28,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:28,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:26:28,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:26:28,991 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 340 [2022-07-12 10:26:28,992 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 422 transitions, 2601 flow. Second operand has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:28,992 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:28,992 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 340 [2022-07-12 10:26:28,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:32,225 INFO L129 PetriNetUnfolder]: 1423/20257 cut-off events. [2022-07-12 10:26:32,225 INFO L130 PetriNetUnfolder]: For 45008/55062 co-relation queries the response was YES. [2022-07-12 10:26:32,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36484 conditions, 20257 events. 1423/20257 cut-off events. For 45008/55062 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 309809 event pairs, 125 based on Foata normal form. 569/19536 useless extension candidates. Maximal degree in co-relation 36428. Up to 3428 conditions per place. [2022-07-12 10:26:32,410 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 61 selfloop transitions, 3 changer transitions 6/436 dead transitions. [2022-07-12 10:26:32,410 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 436 transitions, 2774 flow [2022-07-12 10:26:32,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:26:32,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:26:32,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1964 transitions. [2022-07-12 10:26:32,420 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8252100840336134 [2022-07-12 10:26:32,421 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1964 transitions. [2022-07-12 10:26:32,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1964 transitions. [2022-07-12 10:26:32,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:32,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1964 transitions. [2022-07-12 10:26:32,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.57142857142856) internal successors, (1964), 7 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:32,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:32,426 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:32,427 INFO L186 Difference]: Start difference. First operand has 432 places, 422 transitions, 2601 flow. Second operand 7 states and 1964 transitions. [2022-07-12 10:26:32,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 436 transitions, 2774 flow [2022-07-12 10:26:32,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 436 transitions, 2701 flow, removed 2 selfloop flow, removed 31 redundant places. [2022-07-12 10:26:32,615 INFO L242 Difference]: Finished difference. Result has 410 places, 422 transitions, 2531 flow [2022-07-12 10:26:32,615 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2528, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2531, PETRI_PLACES=410, PETRI_TRANSITIONS=422} [2022-07-12 10:26:32,615 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 109 predicate places. [2022-07-12 10:26:32,615 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 422 transitions, 2531 flow [2022-07-12 10:26:32,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:32,616 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:32,616 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:32,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 10:26:32,616 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:32,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:32,617 INFO L85 PathProgramCache]: Analyzing trace with hash -640724853, now seen corresponding path program 1 times [2022-07-12 10:26:32,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:32,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994730465] [2022-07-12 10:26:32,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:32,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:32,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:32,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:32,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994730465] [2022-07-12 10:26:32,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994730465] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:32,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:32,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:26:32,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217163080] [2022-07-12 10:26:32,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:32,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:26:32,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:32,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:26:32,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:26:32,660 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-12 10:26:32,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 422 transitions, 2531 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:32,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:32,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-12 10:26:32,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand