./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-prod-cons-eq.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 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:13:19,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:13:19,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:13:19,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:13:19,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:13:19,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:13:19,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:13:19,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:13:19,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:13:19,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:13:19,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:13:19,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:13:19,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:13:19,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:13:19,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:13:19,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:13:19,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:13:19,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:13:19,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:13:19,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:13:19,122 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:13:19,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:13:19,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:13:19,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:13:19,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:13:19,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:13:19,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:13:19,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:13:19,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:13:19,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:13:19,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:13:19,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:13:19,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:13:19,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:13:19,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:13:19,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:13:19,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:13:19,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:13:19,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:13:19,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:13:19,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:13:19,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:13:19,144 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 09:13:19,166 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:13:19,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:13:19,166 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:13:19,166 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:13:19,167 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:13:19,167 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:13:19,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:13:19,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:13:19,168 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:13:19,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:13:19,168 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 09:13:19,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:13:19,172 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 09:13:19,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:13:19,173 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:13:19,173 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:13:19,173 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:13:19,173 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 09:13:19,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:13:19,173 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:13:19,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:13:19,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:13:19,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:13:19,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:13:19,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:13:19,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:13:19,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:13:19,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:13:19,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:13:19,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:13:19,175 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:13:19,175 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:13:19,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:13:19,176 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 [2022-07-21 09:13:19,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:13:19,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:13:19,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:13:19,440 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:13:19,440 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:13:19,441 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2022-07-21 09:13:19,479 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4593afb1/a17ca570556047da8f0c646cd2b9d743/FLAG81b45919c [2022-07-21 09:13:19,826 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:13:19,828 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2022-07-21 09:13:19,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4593afb1/a17ca570556047da8f0c646cd2b9d743/FLAG81b45919c [2022-07-21 09:13:20,226 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4593afb1/a17ca570556047da8f0c646cd2b9d743 [2022-07-21 09:13:20,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:13:20,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:13:20,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:13:20,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:13:20,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:13:20,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:13:20" (1/1) ... [2022-07-21 09:13:20,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c6d4066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:13:20, skipping insertion in model container [2022-07-21 09:13:20,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:13:20" (1/1) ... [2022-07-21 09:13:20,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:13:20,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:13:20,393 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2022-07-21 09:13:20,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:13:20,434 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:13:20,454 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2022-07-21 09:13:20,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:13:20,467 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:13:20,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:13:20 WrapperNode [2022-07-21 09:13:20,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:13:20,469 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:13:20,469 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:13:20,469 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:13:20,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:13:20" (1/1) ... [2022-07-21 09:13:20,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:13:20" (1/1) ... [2022-07-21 09:13:20,516 INFO L137 Inliner]: procedures = 28, calls = 80, calls flagged for inlining = 26, calls inlined = 32, statements flattened = 393 [2022-07-21 09:13:20,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:13:20,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:13:20,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:13:20,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:13:20,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:13:20" (1/1) ... [2022-07-21 09:13:20,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:13:20" (1/1) ... [2022-07-21 09:13:20,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:13:20" (1/1) ... [2022-07-21 09:13:20,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:13:20" (1/1) ... [2022-07-21 09:13:20,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:13:20" (1/1) ... [2022-07-21 09:13:20,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:13:20" (1/1) ... [2022-07-21 09:13:20,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:13:20" (1/1) ... [2022-07-21 09:13:20,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:13:20,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:13:20,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:13:20,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:13:20,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:13:20" (1/1) ... [2022-07-21 09:13:20,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:13:20,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:13:20,615 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 09:13:20,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 09:13:20,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:13:20,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 09:13:20,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:13:20,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:13:20,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:13:20,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 09:13:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-21 09:13:20,651 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-21 09:13:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-21 09:13:20,651 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-21 09:13:20,652 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-21 09:13:20,652 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-21 09:13:20,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:13:20,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-21 09:13:20,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-21 09:13:20,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 09:13:20,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:13:20,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:13:20,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:13:20,654 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 09:13:20,763 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:13:20,764 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:13:21,160 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:13:21,323 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:13:21,323 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-07-21 09:13:21,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:13:21 BoogieIcfgContainer [2022-07-21 09:13:21,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:13:21,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:13:21,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:13:21,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:13:21,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:13:20" (1/3) ... [2022-07-21 09:13:21,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ed72ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:13:21, skipping insertion in model container [2022-07-21 09:13:21,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:13:20" (2/3) ... [2022-07-21 09:13:21,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ed72ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:13:21, skipping insertion in model container [2022-07-21 09:13:21,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:13:21" (3/3) ... [2022-07-21 09:13:21,333 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2022-07-21 09:13:21,340 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 09:13:21,347 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:13:21,348 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:13:21,348 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 09:13:21,421 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-21 09:13:21,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 387 places, 414 transitions, 852 flow [2022-07-21 09:13:21,608 INFO L129 PetriNetUnfolder]: 37/411 cut-off events. [2022-07-21 09:13:21,608 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-21 09:13:21,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 411 events. 37/411 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 429 event pairs, 0 based on Foata normal form. 0/373 useless extension candidates. Maximal degree in co-relation 324. Up to 2 conditions per place. [2022-07-21 09:13:21,614 INFO L82 GeneralOperation]: Start removeDead. Operand has 387 places, 414 transitions, 852 flow [2022-07-21 09:13:21,624 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 373 places, 400 transitions, 818 flow [2022-07-21 09:13:21,635 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:13:21,640 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@237dc324, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4bc61caf [2022-07-21 09:13:21,640 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-21 09:13:21,697 INFO L129 PetriNetUnfolder]: 35/381 cut-off events. [2022-07-21 09:13:21,697 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-21 09:13:21,697 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:13:21,698 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:13:21,699 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)] === [2022-07-21 09:13:21,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:13:21,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1718121416, now seen corresponding path program 1 times [2022-07-21 09:13:21,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:13:21,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686562437] [2022-07-21 09:13:21,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:13:21,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:13:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:13:21,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:13:21,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:13:21,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686562437] [2022-07-21 09:13:21,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686562437] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:13:21,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:13:21,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 09:13:21,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617933732] [2022-07-21 09:13:21,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:13:21,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 09:13:21,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:13:21,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 09:13:21,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 09:13:21,987 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 377 out of 414 [2022-07-21 09:13:21,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 400 transitions, 818 flow. Second operand has 2 states, 2 states have (on average 382.0) internal successors, (764), 2 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:21,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:13:21,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 377 of 414 [2022-07-21 09:13:21,994 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:13:22,097 INFO L129 PetriNetUnfolder]: 25/439 cut-off events. [2022-07-21 09:13:22,097 INFO L130 PetriNetUnfolder]: For 22/23 co-relation queries the response was YES. [2022-07-21 09:13:22,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 439 events. 25/439 cut-off events. For 22/23 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 818 event pairs, 7 based on Foata normal form. 51/449 useless extension candidates. Maximal degree in co-relation 342. Up to 31 conditions per place. [2022-07-21 09:13:22,102 INFO L132 encePairwiseOnDemand]: 387/414 looper letters, 9 selfloop transitions, 0 changer transitions 13/373 dead transitions. [2022-07-21 09:13:22,102 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 373 transitions, 782 flow [2022-07-21 09:13:22,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 09:13:22,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-21 09:13:22,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 790 transitions. [2022-07-21 09:13:22,118 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9541062801932367 [2022-07-21 09:13:22,119 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 790 transitions. [2022-07-21 09:13:22,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 790 transitions. [2022-07-21 09:13:22,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:13:22,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 790 transitions. [2022-07-21 09:13:22,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 395.0) internal successors, (790), 2 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:22,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:22,138 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:22,139 INFO L186 Difference]: Start difference. First operand has 373 places, 400 transitions, 818 flow. Second operand 2 states and 790 transitions. [2022-07-21 09:13:22,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 373 transitions, 782 flow [2022-07-21 09:13:22,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 373 transitions, 770 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-21 09:13:22,153 INFO L242 Difference]: Finished difference. Result has 368 places, 360 transitions, 726 flow [2022-07-21 09:13:22,155 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=726, PETRI_PLACES=368, PETRI_TRANSITIONS=360} [2022-07-21 09:13:22,158 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, -5 predicate places. [2022-07-21 09:13:22,159 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 360 transitions, 726 flow [2022-07-21 09:13:22,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 382.0) internal successors, (764), 2 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:22,160 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:13:22,160 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:13:22,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:13:22,161 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)] === [2022-07-21 09:13:22,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:13:22,162 INFO L85 PathProgramCache]: Analyzing trace with hash -2065661086, now seen corresponding path program 1 times [2022-07-21 09:13:22,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:13:22,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356043320] [2022-07-21 09:13:22,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:13:22,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:13:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:13:22,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:13:22,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:13:22,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356043320] [2022-07-21 09:13:22,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356043320] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:13:22,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:13:22,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:13:22,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302875925] [2022-07-21 09:13:22,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:13:22,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:13:22,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:13:22,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:13:22,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:13:22,385 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 414 [2022-07-21 09:13:22,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 360 transitions, 726 flow. Second operand has 3 states, 3 states have (on average 375.6666666666667) internal successors, (1127), 3 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:22,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:13:22,386 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 414 [2022-07-21 09:13:22,386 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:13:22,558 INFO L129 PetriNetUnfolder]: 100/1156 cut-off events. [2022-07-21 09:13:22,558 INFO L130 PetriNetUnfolder]: For 21/23 co-relation queries the response was YES. [2022-07-21 09:13:22,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1288 conditions, 1156 events. 100/1156 cut-off events. For 21/23 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4726 event pairs, 15 based on Foata normal form. 0/1049 useless extension candidates. Maximal degree in co-relation 1285. Up to 72 conditions per place. [2022-07-21 09:13:22,564 INFO L132 encePairwiseOnDemand]: 411/414 looper letters, 18 selfloop transitions, 2 changer transitions 0/367 dead transitions. [2022-07-21 09:13:22,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 367 transitions, 782 flow [2022-07-21 09:13:22,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:13:22,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 09:13:22,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1140 transitions. [2022-07-21 09:13:22,567 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9178743961352657 [2022-07-21 09:13:22,567 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1140 transitions. [2022-07-21 09:13:22,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1140 transitions. [2022-07-21 09:13:22,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:13:22,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1140 transitions. [2022-07-21 09:13:22,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 380.0) internal successors, (1140), 3 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:22,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:22,572 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:22,572 INFO L186 Difference]: Start difference. First operand has 368 places, 360 transitions, 726 flow. Second operand 3 states and 1140 transitions. [2022-07-21 09:13:22,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 367 transitions, 782 flow [2022-07-21 09:13:22,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 367 transitions, 782 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 09:13:22,579 INFO L242 Difference]: Finished difference. Result has 358 places, 361 transitions, 738 flow [2022-07-21 09:13:22,580 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=738, PETRI_PLACES=358, PETRI_TRANSITIONS=361} [2022-07-21 09:13:22,582 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, -15 predicate places. [2022-07-21 09:13:22,582 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 361 transitions, 738 flow [2022-07-21 09:13:22,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 375.6666666666667) internal successors, (1127), 3 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:22,583 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:13:22,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:13:22,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 09:13:22,583 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)] === [2022-07-21 09:13:22,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:13:22,584 INFO L85 PathProgramCache]: Analyzing trace with hash 696268907, now seen corresponding path program 1 times [2022-07-21 09:13:22,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:13:22,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131633159] [2022-07-21 09:13:22,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:13:22,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:13:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:13:22,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:13:22,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:13:22,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131633159] [2022-07-21 09:13:22,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131633159] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:13:22,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:13:22,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:13:22,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026174946] [2022-07-21 09:13:22,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:13:22,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:13:22,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:13:22,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:13:22,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:13:22,773 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 372 out of 414 [2022-07-21 09:13:22,774 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 361 transitions, 738 flow. Second operand has 3 states, 3 states have (on average 375.0) internal successors, (1125), 3 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:22,774 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:13:22,774 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 372 of 414 [2022-07-21 09:13:22,774 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:13:22,887 INFO L129 PetriNetUnfolder]: 83/651 cut-off events. [2022-07-21 09:13:22,888 INFO L130 PetriNetUnfolder]: For 6/30 co-relation queries the response was YES. [2022-07-21 09:13:22,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 819 conditions, 651 events. 83/651 cut-off events. For 6/30 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1916 event pairs, 18 based on Foata normal form. 1/599 useless extension candidates. Maximal degree in co-relation 814. Up to 84 conditions per place. [2022-07-21 09:13:22,893 INFO L132 encePairwiseOnDemand]: 411/414 looper letters, 20 selfloop transitions, 2 changer transitions 0/369 dead transitions. [2022-07-21 09:13:22,893 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 369 transitions, 800 flow [2022-07-21 09:13:22,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:13:22,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 09:13:22,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1139 transitions. [2022-07-21 09:13:22,895 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9170692431561996 [2022-07-21 09:13:22,896 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1139 transitions. [2022-07-21 09:13:22,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1139 transitions. [2022-07-21 09:13:22,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:13:22,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1139 transitions. [2022-07-21 09:13:22,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 379.6666666666667) internal successors, (1139), 3 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:22,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:22,900 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:22,901 INFO L186 Difference]: Start difference. First operand has 358 places, 361 transitions, 738 flow. Second operand 3 states and 1139 transitions. [2022-07-21 09:13:22,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 369 transitions, 800 flow [2022-07-21 09:13:22,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 369 transitions, 798 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 09:13:22,905 INFO L242 Difference]: Finished difference. Result has 360 places, 362 transitions, 748 flow [2022-07-21 09:13:22,906 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=748, PETRI_PLACES=360, PETRI_TRANSITIONS=362} [2022-07-21 09:13:22,907 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, -13 predicate places. [2022-07-21 09:13:22,907 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 362 transitions, 748 flow [2022-07-21 09:13:22,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 375.0) internal successors, (1125), 3 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:22,907 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:13:22,908 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:13:22,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 09:13:22,908 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)] === [2022-07-21 09:13:22,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:13:22,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1655319651, now seen corresponding path program 1 times [2022-07-21 09:13:22,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:13:22,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304142161] [2022-07-21 09:13:22,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:13:22,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:13:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:13:23,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:13:23,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:13:23,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304142161] [2022-07-21 09:13:23,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304142161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:13:23,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:13:23,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 09:13:23,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447825999] [2022-07-21 09:13:23,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:13:23,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:13:23,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:13:23,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:13:23,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:13:23,015 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 414 [2022-07-21 09:13:23,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 362 transitions, 748 flow. Second operand has 6 states, 6 states have (on average 331.8333333333333) internal successors, (1991), 6 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:23,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:13:23,017 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 414 [2022-07-21 09:13:23,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:13:23,246 INFO L129 PetriNetUnfolder]: 97/1054 cut-off events. [2022-07-21 09:13:23,246 INFO L130 PetriNetUnfolder]: For 32/42 co-relation queries the response was YES. [2022-07-21 09:13:23,250 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1342 conditions, 1054 events. 97/1054 cut-off events. For 32/42 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4001 event pairs, 48 based on Foata normal form. 9/969 useless extension candidates. Maximal degree in co-relation 1336. Up to 155 conditions per place. [2022-07-21 09:13:23,253 INFO L132 encePairwiseOnDemand]: 404/414 looper letters, 57 selfloop transitions, 8 changer transitions 42/408 dead transitions. [2022-07-21 09:13:23,253 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 408 transitions, 1057 flow [2022-07-21 09:13:23,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:13:23,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 09:13:23,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3041 transitions. [2022-07-21 09:13:23,258 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8161567364465915 [2022-07-21 09:13:23,258 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3041 transitions. [2022-07-21 09:13:23,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3041 transitions. [2022-07-21 09:13:23,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:13:23,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3041 transitions. [2022-07-21 09:13:23,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 337.8888888888889) internal successors, (3041), 9 states have internal predecessors, (3041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:23,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 414.0) internal successors, (4140), 10 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:23,271 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 414.0) internal successors, (4140), 10 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:23,272 INFO L186 Difference]: Start difference. First operand has 360 places, 362 transitions, 748 flow. Second operand 9 states and 3041 transitions. [2022-07-21 09:13:23,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 408 transitions, 1057 flow [2022-07-21 09:13:23,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 408 transitions, 1055 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 09:13:23,277 INFO L242 Difference]: Finished difference. Result has 369 places, 363 transitions, 774 flow [2022-07-21 09:13:23,278 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=774, PETRI_PLACES=369, PETRI_TRANSITIONS=363} [2022-07-21 09:13:23,279 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, -4 predicate places. [2022-07-21 09:13:23,279 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 363 transitions, 774 flow [2022-07-21 09:13:23,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 331.8333333333333) internal successors, (1991), 6 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:23,280 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:13:23,280 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:13:23,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 09:13:23,281 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)] === [2022-07-21 09:13:23,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:13:23,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1755528069, now seen corresponding path program 1 times [2022-07-21 09:13:23,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:13:23,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826530652] [2022-07-21 09:13:23,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:13:23,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:13:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:13:23,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:13:23,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:13:23,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826530652] [2022-07-21 09:13:23,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826530652] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:13:23,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:13:23,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 09:13:23,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658339921] [2022-07-21 09:13:23,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:13:23,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:13:23,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:13:23,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:13:23,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:13:23,367 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 414 [2022-07-21 09:13:23,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 363 transitions, 774 flow. Second operand has 6 states, 6 states have (on average 333.3333333333333) internal successors, (2000), 6 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:23,370 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:13:23,370 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 414 [2022-07-21 09:13:23,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:13:23,634 INFO L129 PetriNetUnfolder]: 79/1249 cut-off events. [2022-07-21 09:13:23,634 INFO L130 PetriNetUnfolder]: For 64/84 co-relation queries the response was YES. [2022-07-21 09:13:23,638 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1548 conditions, 1249 events. 79/1249 cut-off events. For 64/84 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 5169 event pairs, 34 based on Foata normal form. 10/1162 useless extension candidates. Maximal degree in co-relation 1540. Up to 95 conditions per place. [2022-07-21 09:13:23,641 INFO L132 encePairwiseOnDemand]: 403/414 looper letters, 69 selfloop transitions, 8 changer transitions 21/400 dead transitions. [2022-07-21 09:13:23,641 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 400 transitions, 1062 flow [2022-07-21 09:13:23,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:13:23,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 09:13:23,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3042 transitions. [2022-07-21 09:13:23,646 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8164251207729468 [2022-07-21 09:13:23,646 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3042 transitions. [2022-07-21 09:13:23,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3042 transitions. [2022-07-21 09:13:23,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:13:23,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3042 transitions. [2022-07-21 09:13:23,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 338.0) internal successors, (3042), 9 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:23,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 414.0) internal successors, (4140), 10 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:23,656 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 414.0) internal successors, (4140), 10 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:23,656 INFO L186 Difference]: Start difference. First operand has 369 places, 363 transitions, 774 flow. Second operand 9 states and 3042 transitions. [2022-07-21 09:13:23,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 400 transitions, 1062 flow [2022-07-21 09:13:23,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 400 transitions, 1042 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-07-21 09:13:23,662 INFO L242 Difference]: Finished difference. Result has 375 places, 366 transitions, 808 flow [2022-07-21 09:13:23,663 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=808, PETRI_PLACES=375, PETRI_TRANSITIONS=366} [2022-07-21 09:13:23,663 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, 2 predicate places. [2022-07-21 09:13:23,664 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 366 transitions, 808 flow [2022-07-21 09:13:23,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 333.3333333333333) internal successors, (2000), 6 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:23,664 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:13:23,665 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:13:23,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 09:13:23,665 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)] === [2022-07-21 09:13:23,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:13:23,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1465524326, now seen corresponding path program 1 times [2022-07-21 09:13:23,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:13:23,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416906213] [2022-07-21 09:13:23,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:13:23,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:13:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:13:23,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 09:13:23,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:13:23,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416906213] [2022-07-21 09:13:23,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416906213] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:13:23,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347723980] [2022-07-21 09:13:23,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:13:23,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:13:23,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:13:23,777 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:13:23,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 09:13:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:13:24,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 09:13:24,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:13:24,097 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 09:13:24,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:13:24,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347723980] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:13:24,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:13:24,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-07-21 09:13:24,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499625035] [2022-07-21 09:13:24,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:13:24,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:13:24,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:13:24,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:13:24,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:13:24,111 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 352 out of 414 [2022-07-21 09:13:24,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 366 transitions, 808 flow. Second operand has 5 states, 5 states have (on average 357.4) internal successors, (1787), 5 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:24,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:13:24,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 352 of 414 [2022-07-21 09:13:24,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:13:25,223 INFO L129 PetriNetUnfolder]: 2638/5809 cut-off events. [2022-07-21 09:13:25,223 INFO L130 PetriNetUnfolder]: For 5921/5929 co-relation queries the response was YES. [2022-07-21 09:13:25,238 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13709 conditions, 5809 events. 2638/5809 cut-off events. For 5921/5929 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 38471 event pairs, 1154 based on Foata normal form. 0/5454 useless extension candidates. Maximal degree in co-relation 13696. Up to 2745 conditions per place. [2022-07-21 09:13:25,263 INFO L132 encePairwiseOnDemand]: 406/414 looper letters, 30 selfloop transitions, 0 changer transitions 33/394 dead transitions. [2022-07-21 09:13:25,264 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 394 transitions, 1046 flow [2022-07-21 09:13:25,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:13:25,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 09:13:25,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2171 transitions. [2022-07-21 09:13:25,267 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8739935587761675 [2022-07-21 09:13:25,268 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2171 transitions. [2022-07-21 09:13:25,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2171 transitions. [2022-07-21 09:13:25,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:13:25,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2171 transitions. [2022-07-21 09:13:25,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 361.8333333333333) internal successors, (2171), 6 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:25,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 414.0) internal successors, (2898), 7 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:25,276 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 414.0) internal successors, (2898), 7 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:25,276 INFO L186 Difference]: Start difference. First operand has 375 places, 366 transitions, 808 flow. Second operand 6 states and 2171 transitions. [2022-07-21 09:13:25,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 394 transitions, 1046 flow [2022-07-21 09:13:25,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 394 transitions, 1034 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-07-21 09:13:25,283 INFO L242 Difference]: Finished difference. Result has 377 places, 361 transitions, 792 flow [2022-07-21 09:13:25,284 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=792, PETRI_PLACES=377, PETRI_TRANSITIONS=361} [2022-07-21 09:13:25,285 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, 4 predicate places. [2022-07-21 09:13:25,285 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 361 transitions, 792 flow [2022-07-21 09:13:25,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 357.4) internal successors, (1787), 5 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:25,286 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:13:25,286 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:13:25,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 09:13:25,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-21 09:13:25,504 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)] === [2022-07-21 09:13:25,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:13:25,505 INFO L85 PathProgramCache]: Analyzing trace with hash 48024263, now seen corresponding path program 1 times [2022-07-21 09:13:25,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:13:25,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672791462] [2022-07-21 09:13:25,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:13:25,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:13:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:13:25,613 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 09:13:25,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:13:25,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672791462] [2022-07-21 09:13:25,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672791462] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:13:25,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:13:25,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:13:25,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936666079] [2022-07-21 09:13:25,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:13:25,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:13:25,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:13:25,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:13:25,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:13:25,617 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 414 [2022-07-21 09:13:25,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 361 transitions, 792 flow. Second operand has 4 states, 4 states have (on average 372.5) internal successors, (1490), 4 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:25,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:13:25,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 414 [2022-07-21 09:13:25,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:13:26,022 INFO L129 PetriNetUnfolder]: 346/2903 cut-off events. [2022-07-21 09:13:26,023 INFO L130 PetriNetUnfolder]: For 280/296 co-relation queries the response was YES. [2022-07-21 09:13:26,038 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4079 conditions, 2903 events. 346/2903 cut-off events. For 280/296 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 19341 event pairs, 84 based on Foata normal form. 10/2764 useless extension candidates. Maximal degree in co-relation 4064. Up to 365 conditions per place. [2022-07-21 09:13:26,049 INFO L132 encePairwiseOnDemand]: 407/414 looper letters, 26 selfloop transitions, 10 changer transitions 0/379 dead transitions. [2022-07-21 09:13:26,049 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 379 transitions, 930 flow [2022-07-21 09:13:26,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 09:13:26,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-21 09:13:26,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1510 transitions. [2022-07-21 09:13:26,052 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9118357487922706 [2022-07-21 09:13:26,052 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1510 transitions. [2022-07-21 09:13:26,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1510 transitions. [2022-07-21 09:13:26,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:13:26,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1510 transitions. [2022-07-21 09:13:26,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 377.5) internal successors, (1510), 4 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:26,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 414.0) internal successors, (2070), 5 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:26,057 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 414.0) internal successors, (2070), 5 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:26,057 INFO L186 Difference]: Start difference. First operand has 377 places, 361 transitions, 792 flow. Second operand 4 states and 1510 transitions. [2022-07-21 09:13:26,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 379 transitions, 930 flow [2022-07-21 09:13:26,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 379 transitions, 914 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-07-21 09:13:26,063 INFO L242 Difference]: Finished difference. Result has 370 places, 369 transitions, 855 flow [2022-07-21 09:13:26,064 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=855, PETRI_PLACES=370, PETRI_TRANSITIONS=369} [2022-07-21 09:13:26,064 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, -3 predicate places. [2022-07-21 09:13:26,064 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 369 transitions, 855 flow [2022-07-21 09:13:26,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 372.5) internal successors, (1490), 4 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:26,065 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:13:26,065 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:13:26,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 09:13:26,066 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)] === [2022-07-21 09:13:26,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:13:26,066 INFO L85 PathProgramCache]: Analyzing trace with hash -688701689, now seen corresponding path program 2 times [2022-07-21 09:13:26,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:13:26,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684960147] [2022-07-21 09:13:26,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:13:26,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:13:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:13:26,185 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 09:13:26,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:13:26,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684960147] [2022-07-21 09:13:26,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684960147] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:13:26,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973843483] [2022-07-21 09:13:26,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:13:26,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:13:26,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:13:26,188 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:13:26,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 09:13:26,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:13:26,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:13:26,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 09:13:26,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:13:26,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 09:13:26,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:13:26,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973843483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:13:26,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:13:26,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2022-07-21 09:13:26,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511476673] [2022-07-21 09:13:26,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:13:26,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:13:26,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:13:26,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:13:26,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:13:26,537 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 372 out of 414 [2022-07-21 09:13:26,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 369 transitions, 855 flow. Second operand has 5 states, 5 states have (on average 374.2) internal successors, (1871), 5 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:26,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:13:26,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 372 of 414 [2022-07-21 09:13:26,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:13:27,157 INFO L129 PetriNetUnfolder]: 386/4441 cut-off events. [2022-07-21 09:13:27,158 INFO L130 PetriNetUnfolder]: For 771/937 co-relation queries the response was YES. [2022-07-21 09:13:27,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6149 conditions, 4441 events. 386/4441 cut-off events. For 771/937 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 36550 event pairs, 68 based on Foata normal form. 42/4374 useless extension candidates. Maximal degree in co-relation 6135. Up to 241 conditions per place. [2022-07-21 09:13:27,194 INFO L132 encePairwiseOnDemand]: 408/414 looper letters, 42 selfloop transitions, 11 changer transitions 0/399 dead transitions. [2022-07-21 09:13:27,194 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 399 transitions, 1104 flow [2022-07-21 09:13:27,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:13:27,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 09:13:27,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2271 transitions. [2022-07-21 09:13:27,197 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9142512077294686 [2022-07-21 09:13:27,198 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2271 transitions. [2022-07-21 09:13:27,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2271 transitions. [2022-07-21 09:13:27,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:13:27,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2271 transitions. [2022-07-21 09:13:27,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 378.5) internal successors, (2271), 6 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:27,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 414.0) internal successors, (2898), 7 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:27,205 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 414.0) internal successors, (2898), 7 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:27,205 INFO L186 Difference]: Start difference. First operand has 370 places, 369 transitions, 855 flow. Second operand 6 states and 2271 transitions. [2022-07-21 09:13:27,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 399 transitions, 1104 flow [2022-07-21 09:13:27,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 399 transitions, 1094 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-07-21 09:13:27,211 INFO L242 Difference]: Finished difference. Result has 379 places, 378 transitions, 961 flow [2022-07-21 09:13:27,212 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=961, PETRI_PLACES=379, PETRI_TRANSITIONS=378} [2022-07-21 09:13:27,212 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, 6 predicate places. [2022-07-21 09:13:27,212 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 378 transitions, 961 flow [2022-07-21 09:13:27,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 374.2) internal successors, (1871), 5 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:27,213 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:13:27,213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:13:27,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 09:13:27,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-21 09:13:27,431 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)] === [2022-07-21 09:13:27,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:13:27,432 INFO L85 PathProgramCache]: Analyzing trace with hash 435392531, now seen corresponding path program 3 times [2022-07-21 09:13:27,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:13:27,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334534252] [2022-07-21 09:13:27,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:13:27,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:13:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:13:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 09:13:27,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:13:27,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334534252] [2022-07-21 09:13:27,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334534252] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:13:27,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:13:27,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:13:27,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186807310] [2022-07-21 09:13:27,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:13:27,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:13:27,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:13:27,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:13:27,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:13:27,525 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 414 [2022-07-21 09:13:27,526 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 378 transitions, 961 flow. Second operand has 4 states, 4 states have (on average 372.5) internal successors, (1490), 4 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:27,526 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:13:27,526 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 414 [2022-07-21 09:13:27,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:13:28,559 INFO L129 PetriNetUnfolder]: 916/6215 cut-off events. [2022-07-21 09:13:28,559 INFO L130 PetriNetUnfolder]: For 3563/3915 co-relation queries the response was YES. [2022-07-21 09:13:28,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10686 conditions, 6215 events. 916/6215 cut-off events. For 3563/3915 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 54852 event pairs, 110 based on Foata normal form. 78/6108 useless extension candidates. Maximal degree in co-relation 10667. Up to 591 conditions per place. [2022-07-21 09:13:28,650 INFO L132 encePairwiseOnDemand]: 406/414 looper letters, 46 selfloop transitions, 25 changer transitions 0/414 dead transitions. [2022-07-21 09:13:28,650 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 414 transitions, 1316 flow [2022-07-21 09:13:28,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:13:28,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 09:13:28,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1891 transitions. [2022-07-21 09:13:28,654 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9135265700483092 [2022-07-21 09:13:28,654 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1891 transitions. [2022-07-21 09:13:28,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1891 transitions. [2022-07-21 09:13:28,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:13:28,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1891 transitions. [2022-07-21 09:13:28,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 378.2) internal successors, (1891), 5 states have internal predecessors, (1891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:28,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 414.0) internal successors, (2484), 6 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:28,661 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 414.0) internal successors, (2484), 6 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:28,661 INFO L186 Difference]: Start difference. First operand has 379 places, 378 transitions, 961 flow. Second operand 5 states and 1891 transitions. [2022-07-21 09:13:28,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 414 transitions, 1316 flow [2022-07-21 09:13:28,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 414 transitions, 1311 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-21 09:13:28,672 INFO L242 Difference]: Finished difference. Result has 385 places, 391 transitions, 1163 flow [2022-07-21 09:13:28,673 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1163, PETRI_PLACES=385, PETRI_TRANSITIONS=391} [2022-07-21 09:13:28,673 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, 12 predicate places. [2022-07-21 09:13:28,673 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 391 transitions, 1163 flow [2022-07-21 09:13:28,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 372.5) internal successors, (1490), 4 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:28,674 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:13:28,674 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:13:28,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 09:13:28,674 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)] === [2022-07-21 09:13:28,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:13:28,675 INFO L85 PathProgramCache]: Analyzing trace with hash 2124672807, now seen corresponding path program 4 times [2022-07-21 09:13:28,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:13:28,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805139254] [2022-07-21 09:13:28,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:13:28,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:13:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:13:28,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 09:13:28,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:13:28,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805139254] [2022-07-21 09:13:28,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805139254] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:13:28,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:13:28,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:13:28,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187607032] [2022-07-21 09:13:28,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:13:28,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:13:28,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:13:28,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:13:28,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:13:28,751 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 414 [2022-07-21 09:13:28,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 391 transitions, 1163 flow. Second operand has 4 states, 4 states have (on average 373.25) internal successors, (1493), 4 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:28,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:13:28,753 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 414 [2022-07-21 09:13:28,753 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:13:29,821 INFO L129 PetriNetUnfolder]: 1046/6783 cut-off events. [2022-07-21 09:13:29,822 INFO L130 PetriNetUnfolder]: For 8668/9248 co-relation queries the response was YES. [2022-07-21 09:13:29,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13350 conditions, 6783 events. 1046/6783 cut-off events. For 8668/9248 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 61186 event pairs, 220 based on Foata normal form. 78/6652 useless extension candidates. Maximal degree in co-relation 13328. Up to 612 conditions per place. [2022-07-21 09:13:30,057 INFO L132 encePairwiseOnDemand]: 408/414 looper letters, 65 selfloop transitions, 26 changer transitions 0/435 dead transitions. [2022-07-21 09:13:30,057 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 435 transitions, 1761 flow [2022-07-21 09:13:30,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:13:30,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 09:13:30,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1889 transitions. [2022-07-21 09:13:30,061 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.91256038647343 [2022-07-21 09:13:30,061 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1889 transitions. [2022-07-21 09:13:30,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1889 transitions. [2022-07-21 09:13:30,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:13:30,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1889 transitions. [2022-07-21 09:13:30,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 377.8) internal successors, (1889), 5 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:30,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 414.0) internal successors, (2484), 6 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:30,068 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 414.0) internal successors, (2484), 6 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:30,068 INFO L186 Difference]: Start difference. First operand has 385 places, 391 transitions, 1163 flow. Second operand 5 states and 1889 transitions. [2022-07-21 09:13:30,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 435 transitions, 1761 flow [2022-07-21 09:13:30,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 435 transitions, 1706 flow, removed 14 selfloop flow, removed 1 redundant places. [2022-07-21 09:13:30,081 INFO L242 Difference]: Finished difference. Result has 392 places, 403 transitions, 1393 flow [2022-07-21 09:13:30,082 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1393, PETRI_PLACES=392, PETRI_TRANSITIONS=403} [2022-07-21 09:13:30,083 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, 19 predicate places. [2022-07-21 09:13:30,083 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 403 transitions, 1393 flow [2022-07-21 09:13:30,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 373.25) internal successors, (1493), 4 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:30,084 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:13:30,084 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:13:30,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 09:13:30,085 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)] === [2022-07-21 09:13:30,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:13:30,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1409041932, now seen corresponding path program 1 times [2022-07-21 09:13:30,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:13:30,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609116572] [2022-07-21 09:13:30,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:13:30,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:13:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:13:30,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 09:13:30,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:13:30,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609116572] [2022-07-21 09:13:30,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609116572] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:13:30,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:13:30,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:13:30,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25253819] [2022-07-21 09:13:30,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:13:30,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:13:30,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:13:30,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:13:30,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:13:30,166 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 364 out of 414 [2022-07-21 09:13:30,168 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 403 transitions, 1393 flow. Second operand has 4 states, 4 states have (on average 368.5) internal successors, (1474), 4 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:30,168 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:13:30,168 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 364 of 414 [2022-07-21 09:13:30,168 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:13:30,835 INFO L129 PetriNetUnfolder]: 901/4512 cut-off events. [2022-07-21 09:13:30,836 INFO L130 PetriNetUnfolder]: For 12260/12992 co-relation queries the response was YES. [2022-07-21 09:13:30,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11197 conditions, 4512 events. 901/4512 cut-off events. For 12260/12992 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 38158 event pairs, 379 based on Foata normal form. 173/4316 useless extension candidates. Maximal degree in co-relation 11172. Up to 864 conditions per place. [2022-07-21 09:13:30,901 INFO L132 encePairwiseOnDemand]: 408/414 looper letters, 44 selfloop transitions, 4 changer transitions 23/430 dead transitions. [2022-07-21 09:13:30,902 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 430 transitions, 1764 flow [2022-07-21 09:13:30,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:13:30,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 09:13:30,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1855 transitions. [2022-07-21 09:13:30,905 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8961352657004831 [2022-07-21 09:13:30,905 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1855 transitions. [2022-07-21 09:13:30,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1855 transitions. [2022-07-21 09:13:30,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:13:30,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1855 transitions. [2022-07-21 09:13:30,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 371.0) internal successors, (1855), 5 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:30,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 414.0) internal successors, (2484), 6 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:30,911 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 414.0) internal successors, (2484), 6 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:30,911 INFO L186 Difference]: Start difference. First operand has 392 places, 403 transitions, 1393 flow. Second operand 5 states and 1855 transitions. [2022-07-21 09:13:30,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 430 transitions, 1764 flow [2022-07-21 09:13:30,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 430 transitions, 1762 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-07-21 09:13:30,928 INFO L242 Difference]: Finished difference. Result has 398 places, 404 transitions, 1419 flow [2022-07-21 09:13:30,929 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1391, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1419, PETRI_PLACES=398, PETRI_TRANSITIONS=404} [2022-07-21 09:13:30,929 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, 25 predicate places. [2022-07-21 09:13:30,930 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 404 transitions, 1419 flow [2022-07-21 09:13:30,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 368.5) internal successors, (1474), 4 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:30,930 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:13:30,930 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:13:30,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 09:13:30,931 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)] === [2022-07-21 09:13:30,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:13:30,931 INFO L85 PathProgramCache]: Analyzing trace with hash -220235787, now seen corresponding path program 1 times [2022-07-21 09:13:30,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:13:30,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751477653] [2022-07-21 09:13:30,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:13:30,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:13:31,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:13:31,168 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 09:13:31,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:13:31,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751477653] [2022-07-21 09:13:31,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751477653] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:13:31,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:13:31,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 09:13:31,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416273871] [2022-07-21 09:13:31,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:13:31,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:13:31,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:13:31,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:13:31,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:13:31,172 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 414 [2022-07-21 09:13:31,173 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 404 transitions, 1419 flow. Second operand has 9 states, 9 states have (on average 321.8888888888889) internal successors, (2897), 9 states have internal predecessors, (2897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:31,173 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:13:31,174 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 414 [2022-07-21 09:13:31,174 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:13:32,749 INFO L129 PetriNetUnfolder]: 2395/7360 cut-off events. [2022-07-21 09:13:32,749 INFO L130 PetriNetUnfolder]: For 22211/22930 co-relation queries the response was YES. [2022-07-21 09:13:32,791 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20904 conditions, 7360 events. 2395/7360 cut-off events. For 22211/22930 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 65995 event pairs, 1386 based on Foata normal form. 357/6752 useless extension candidates. Maximal degree in co-relation 20876. Up to 3229 conditions per place. [2022-07-21 09:13:32,825 INFO L132 encePairwiseOnDemand]: 401/414 looper letters, 93 selfloop transitions, 8 changer transitions 62/470 dead transitions. [2022-07-21 09:13:32,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 470 transitions, 2070 flow [2022-07-21 09:13:32,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 09:13:32,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-21 09:13:32,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3904 transitions. [2022-07-21 09:13:32,832 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.785829307568438 [2022-07-21 09:13:32,832 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3904 transitions. [2022-07-21 09:13:32,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3904 transitions. [2022-07-21 09:13:32,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:13:32,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3904 transitions. [2022-07-21 09:13:32,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 325.3333333333333) internal successors, (3904), 12 states have internal predecessors, (3904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:32,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 414.0) internal successors, (5382), 13 states have internal predecessors, (5382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:32,846 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 414.0) internal successors, (5382), 13 states have internal predecessors, (5382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:32,846 INFO L186 Difference]: Start difference. First operand has 398 places, 404 transitions, 1419 flow. Second operand 12 states and 3904 transitions. [2022-07-21 09:13:32,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 470 transitions, 2070 flow [2022-07-21 09:13:32,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 470 transitions, 2026 flow, removed 19 selfloop flow, removed 3 redundant places. [2022-07-21 09:13:32,877 INFO L242 Difference]: Finished difference. Result has 410 places, 405 transitions, 1439 flow [2022-07-21 09:13:32,877 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1439, PETRI_PLACES=410, PETRI_TRANSITIONS=405} [2022-07-21 09:13:32,878 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, 37 predicate places. [2022-07-21 09:13:32,878 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 405 transitions, 1439 flow [2022-07-21 09:13:32,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 321.8888888888889) internal successors, (2897), 9 states have internal predecessors, (2897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:32,879 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:13:32,879 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:13:32,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 09:13:32,879 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)] === [2022-07-21 09:13:32,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:13:32,880 INFO L85 PathProgramCache]: Analyzing trace with hash -558405394, now seen corresponding path program 1 times [2022-07-21 09:13:32,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:13:32,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140461564] [2022-07-21 09:13:32,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:13:32,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:13:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:13:33,006 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 09:13:33,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:13:33,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140461564] [2022-07-21 09:13:33,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140461564] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:13:33,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825666666] [2022-07-21 09:13:33,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:13:33,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:13:33,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:13:33,009 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:13:33,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 09:13:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:13:33,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:13:33,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:13:33,293 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 09:13:33,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:13:33,449 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 09:13:33,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825666666] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 09:13:33,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:13:33,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2022-07-21 09:13:33,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102309859] [2022-07-21 09:13:33,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:13:33,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:13:33,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:13:33,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:13:33,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:13:33,453 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 414 [2022-07-21 09:13:33,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 405 transitions, 1439 flow. Second operand has 9 states, 9 states have (on average 321.1111111111111) internal successors, (2890), 9 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:33,455 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:13:33,455 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 414 [2022-07-21 09:13:33,455 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:13:34,166 INFO L129 PetriNetUnfolder]: 954/3590 cut-off events. [2022-07-21 09:13:34,166 INFO L130 PetriNetUnfolder]: For 11086/11489 co-relation queries the response was YES. [2022-07-21 09:13:34,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10445 conditions, 3590 events. 954/3590 cut-off events. For 11086/11489 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 27350 event pairs, 431 based on Foata normal form. 65/3329 useless extension candidates. Maximal degree in co-relation 10413. Up to 1237 conditions per place. [2022-07-21 09:13:34,208 INFO L132 encePairwiseOnDemand]: 402/414 looper letters, 90 selfloop transitions, 11 changer transitions 0/407 dead transitions. [2022-07-21 09:13:34,208 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 407 transitions, 1645 flow [2022-07-21 09:13:34,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 09:13:34,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 09:13:34,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3529 transitions. [2022-07-21 09:13:34,214 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7749231444883619 [2022-07-21 09:13:34,214 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3529 transitions. [2022-07-21 09:13:34,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3529 transitions. [2022-07-21 09:13:34,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:13:34,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3529 transitions. [2022-07-21 09:13:34,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 320.8181818181818) internal successors, (3529), 11 states have internal predecessors, (3529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:34,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 414.0) internal successors, (4968), 12 states have internal predecessors, (4968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:34,225 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 414.0) internal successors, (4968), 12 states have internal predecessors, (4968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:34,225 INFO L186 Difference]: Start difference. First operand has 410 places, 405 transitions, 1439 flow. Second operand 11 states and 3529 transitions. [2022-07-21 09:13:34,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 407 transitions, 1645 flow [2022-07-21 09:13:34,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 407 transitions, 1617 flow, removed 6 selfloop flow, removed 9 redundant places. [2022-07-21 09:13:34,241 INFO L242 Difference]: Finished difference. Result has 409 places, 407 transitions, 1452 flow [2022-07-21 09:13:34,242 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1411, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1452, PETRI_PLACES=409, PETRI_TRANSITIONS=407} [2022-07-21 09:13:34,242 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, 36 predicate places. [2022-07-21 09:13:34,242 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 407 transitions, 1452 flow [2022-07-21 09:13:34,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 321.1111111111111) internal successors, (2890), 9 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:34,243 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:13:34,243 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:13:34,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 09:13:34,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:13:34,450 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)] === [2022-07-21 09:13:34,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:13:34,450 INFO L85 PathProgramCache]: Analyzing trace with hash 2022249475, now seen corresponding path program 1 times [2022-07-21 09:13:34,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:13:34,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131259901] [2022-07-21 09:13:34,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:13:34,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:13:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:13:34,691 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 09:13:34,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:13:34,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131259901] [2022-07-21 09:13:34,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131259901] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:13:34,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:13:34,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 09:13:34,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949978492] [2022-07-21 09:13:34,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:13:34,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 09:13:34,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:13:34,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 09:13:34,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:13:34,696 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 414 [2022-07-21 09:13:34,698 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 407 transitions, 1452 flow. Second operand has 13 states, 13 states have (on average 285.61538461538464) internal successors, (3713), 13 states have internal predecessors, (3713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:34,698 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:13:34,698 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 414 [2022-07-21 09:13:34,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:13:50,841 INFO L129 PetriNetUnfolder]: 43122/78179 cut-off events. [2022-07-21 09:13:50,841 INFO L130 PetriNetUnfolder]: For 385849/445362 co-relation queries the response was YES. [2022-07-21 09:13:51,555 INFO L84 FinitePrefix]: Finished finitePrefix Result has 272246 conditions, 78179 events. 43122/78179 cut-off events. For 385849/445362 co-relation queries the response was YES. Maximal size of possible extension queue 1084. Compared 745180 event pairs, 25990 based on Foata normal form. 17524/92321 useless extension candidates. Maximal degree in co-relation 272215. Up to 52871 conditions per place. [2022-07-21 09:13:51,873 INFO L132 encePairwiseOnDemand]: 397/414 looper letters, 128 selfloop transitions, 7 changer transitions 402/813 dead transitions. [2022-07-21 09:13:51,873 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 813 transitions, 6104 flow [2022-07-21 09:13:51,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-21 09:13:51,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-21 09:13:51,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 6683 transitions. [2022-07-21 09:13:51,882 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7018483511867255 [2022-07-21 09:13:51,882 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 6683 transitions. [2022-07-21 09:13:51,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 6683 transitions. [2022-07-21 09:13:51,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:13:51,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 6683 transitions. [2022-07-21 09:13:51,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 290.5652173913044) internal successors, (6683), 23 states have internal predecessors, (6683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:51,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 414.0) internal successors, (9936), 24 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:51,902 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 414.0) internal successors, (9936), 24 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:51,902 INFO L186 Difference]: Start difference. First operand has 409 places, 407 transitions, 1452 flow. Second operand 23 states and 6683 transitions. [2022-07-21 09:13:51,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 813 transitions, 6104 flow [2022-07-21 09:13:52,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 813 transitions, 6088 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-21 09:13:52,244 INFO L242 Difference]: Finished difference. Result has 440 places, 408 transitions, 1684 flow [2022-07-21 09:13:52,245 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1684, PETRI_PLACES=440, PETRI_TRANSITIONS=408} [2022-07-21 09:13:52,245 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, 67 predicate places. [2022-07-21 09:13:52,245 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 408 transitions, 1684 flow [2022-07-21 09:13:52,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 285.61538461538464) internal successors, (3713), 13 states have internal predecessors, (3713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:52,246 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:13:52,246 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:13:52,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 09:13:52,247 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)] === [2022-07-21 09:13:52,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:13:52,247 INFO L85 PathProgramCache]: Analyzing trace with hash -272035395, now seen corresponding path program 1 times [2022-07-21 09:13:52,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:13:52,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639716531] [2022-07-21 09:13:52,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:13:52,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:13:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:13:54,553 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 09:13:54,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:13:54,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639716531] [2022-07-21 09:13:54,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639716531] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:13:54,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56153070] [2022-07-21 09:13:54,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:13:54,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:13:54,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:13:54,555 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:13:54,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 09:13:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:13:54,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 94 conjunts are in the unsatisfiable core [2022-07-21 09:13:54,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:13:56,162 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:13:56,882 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-21 09:13:56,882 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-21 09:13:57,232 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-21 09:13:57,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-21 09:13:57,862 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:13:57,874 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-21 09:13:58,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:13:58,407 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2022-07-21 09:13:58,418 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:13:58,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:13:58,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:13:58,679 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2022-07-21 09:13:58,697 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:13:58,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:13:58,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:13:58,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-07-21 09:13:58,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:13:58,887 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:14:02,857 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:14:02,858 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2022-07-21 09:14:02,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:14:02,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:14:02,875 INFO L356 Elim1Store]: treesize reduction 3, result has 70.0 percent of original size [2022-07-21 09:14:02,876 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 33 [2022-07-21 09:14:03,091 INFO L356 Elim1Store]: treesize reduction 57, result has 38.7 percent of original size [2022-07-21 09:14:03,092 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 68 [2022-07-21 09:14:03,126 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 09:14:03,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:14:08,063 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:14:08,064 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 199 treesize of output 188 [2022-07-21 09:14:08,091 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:14:08,092 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2618 treesize of output 2626 [2022-07-21 09:14:08,109 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:14:08,110 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 2574 treesize of output 2202 [2022-07-21 09:14:08,141 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:14:08,142 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59394 treesize of output 58410 [2022-07-21 09:14:08,265 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:14:08,266 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58358 treesize of output 55302 [2022-07-21 09:14:08,348 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:14:08,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55286 treesize of output 54534 [2022-07-21 09:14:08,430 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:14:08,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54518 treesize of output 52998 [2022-07-21 09:14:08,513 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:14:08,513 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52982 treesize of output 51462 [2022-07-21 09:14:08,608 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:14:08,608 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51446 treesize of output 48390 [2022-07-21 09:14:08,721 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:14:08,722 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24570 treesize of output 23819