./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 16:37:41,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 16:37:41,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 16:37:41,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 16:37:41,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 16:37:41,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 16:37:41,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 16:37:41,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 16:37:41,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 16:37:41,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 16:37:41,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 16:37:41,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 16:37:41,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 16:37:41,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 16:37:41,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 16:37:41,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 16:37:41,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 16:37:41,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 16:37:41,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 16:37:41,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 16:37:41,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 16:37:41,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 16:37:41,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 16:37:41,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 16:37:41,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 16:37:41,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 16:37:41,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 16:37:41,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 16:37:41,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 16:37:41,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 16:37:41,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 16:37:41,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 16:37:41,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 16:37:41,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 16:37:41,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 16:37:41,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 16:37:41,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 16:37:41,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 16:37:41,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 16:37:41,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 16:37:41,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 16:37:41,991 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 16:37:42,011 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 16:37:42,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 16:37:42,013 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 16:37:42,013 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 16:37:42,015 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 16:37:42,015 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 16:37:42,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 16:37:42,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 16:37:42,016 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 16:37:42,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 16:37:42,017 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 16:37:42,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 16:37:42,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 16:37:42,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 16:37:42,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 16:37:42,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 16:37:42,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 16:37:42,019 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 16:37:42,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 16:37:42,019 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 16:37:42,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 16:37:42,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 16:37:42,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 16:37:42,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 16:37:42,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:37:42,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 16:37:42,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 16:37:42,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 16:37:42,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 16:37:42,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 16:37:42,022 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 16:37:42,022 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 16:37:42,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 16:37:42,022 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 16:37:42,022 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 [2021-12-14 16:37:42,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 16:37:42,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 16:37:42,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 16:37:42,293 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 16:37:42,293 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 16:37:42,295 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-12-14 16:37:42,366 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90b96ed63/6aa237d4102b489194a22084ee2d766d/FLAGdec74c0c7 [2021-12-14 16:37:42,835 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 16:37:42,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-12-14 16:37:42,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90b96ed63/6aa237d4102b489194a22084ee2d766d/FLAGdec74c0c7 [2021-12-14 16:37:43,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90b96ed63/6aa237d4102b489194a22084ee2d766d [2021-12-14 16:37:43,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 16:37:43,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 16:37:43,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 16:37:43,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 16:37:43,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 16:37:43,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:37:43" (1/1) ... [2021-12-14 16:37:43,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@161dda48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:37:43, skipping insertion in model container [2021-12-14 16:37:43,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:37:43" (1/1) ... [2021-12-14 16:37:43,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 16:37:43,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 16:37:43,400 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-12-14 16:37:43,514 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:37:43,521 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 16:37:43,532 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-12-14 16:37:43,560 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:37:43,586 INFO L208 MainTranslator]: Completed translation [2021-12-14 16:37:43,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:37:43 WrapperNode [2021-12-14 16:37:43,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 16:37:43,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 16:37:43,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 16:37:43,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 16:37:43,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:37:43" (1/1) ... [2021-12-14 16:37:43,607 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:37:43" (1/1) ... [2021-12-14 16:37:43,625 INFO L137 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2021-12-14 16:37:43,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 16:37:43,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 16:37:43,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 16:37:43,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 16:37:43,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:37:43" (1/1) ... [2021-12-14 16:37:43,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:37:43" (1/1) ... [2021-12-14 16:37:43,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:37:43" (1/1) ... [2021-12-14 16:37:43,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:37:43" (1/1) ... [2021-12-14 16:37:43,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:37:43" (1/1) ... [2021-12-14 16:37:43,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:37:43" (1/1) ... [2021-12-14 16:37:43,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:37:43" (1/1) ... [2021-12-14 16:37:43,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 16:37:43,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 16:37:43,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 16:37:43,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 16:37:43,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:37:43" (1/1) ... [2021-12-14 16:37:43,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:37:43,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:37:43,693 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 16:37:43,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 16:37:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 16:37:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-14 16:37:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 16:37:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 16:37:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 16:37:43,738 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-12-14 16:37:43,738 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-12-14 16:37:43,738 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-12-14 16:37:43,739 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-12-14 16:37:43,739 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-12-14 16:37:43,739 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-12-14 16:37:43,739 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-12-14 16:37:43,739 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-12-14 16:37:43,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 16:37:43,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-14 16:37:43,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 16:37:43,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 16:37:43,741 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-14 16:37:43,889 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 16:37:43,904 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 16:37:44,081 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 16:37:44,088 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 16:37:44,089 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 16:37:44,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:37:44 BoogieIcfgContainer [2021-12-14 16:37:44,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 16:37:44,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 16:37:44,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 16:37:44,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 16:37:44,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:37:43" (1/3) ... [2021-12-14 16:37:44,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e3402d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:37:44, skipping insertion in model container [2021-12-14 16:37:44,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:37:43" (2/3) ... [2021-12-14 16:37:44,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e3402d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:37:44, skipping insertion in model container [2021-12-14 16:37:44,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:37:44" (3/3) ... [2021-12-14 16:37:44,105 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-12-14 16:37:44,118 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-14 16:37:44,118 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 16:37:44,119 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 16:37:44,119 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-14 16:37:44,162 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,163 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,163 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,164 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,165 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,166 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,166 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,166 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,167 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,167 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,167 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,167 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,168 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,168 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,168 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,169 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,169 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,169 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,169 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,170 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,171 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,172 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,172 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,172 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,173 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,174 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,174 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,174 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,175 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,175 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,175 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,175 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,175 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,176 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,176 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,176 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,178 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,178 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,178 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,178 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,179 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,179 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,179 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,180 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,180 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,181 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,181 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,182 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,190 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,190 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,191 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,191 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,198 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,199 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,199 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,199 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,203 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,203 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,203 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,204 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,205 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,206 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,206 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,206 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:44,207 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-14 16:37:44,255 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 16:37:44,262 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 16:37:44,262 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-12-14 16:37:44,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 116 places, 105 transitions, 230 flow [2021-12-14 16:37:44,317 INFO L129 PetriNetUnfolder]: 2/101 cut-off events. [2021-12-14 16:37:44,323 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-14 16:37:44,327 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 101 events. 2/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2021-12-14 16:37:44,328 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 105 transitions, 230 flow [2021-12-14 16:37:44,332 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 85 transitions, 182 flow [2021-12-14 16:37:44,368 INFO L129 PetriNetUnfolder]: 1/84 cut-off events. [2021-12-14 16:37:44,374 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-14 16:37:44,375 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:37:44,376 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:37:44,377 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-14 16:37:44,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:37:44,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1881502097, now seen corresponding path program 1 times [2021-12-14 16:37:44,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:37:44,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784782735] [2021-12-14 16:37:44,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:37:44,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:37:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:37:44,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:37:44,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:37:44,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784782735] [2021-12-14 16:37:44,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784782735] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:37:44,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:37:44,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:37:44,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484773566] [2021-12-14 16:37:44,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:37:44,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:37:44,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:37:44,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:37:44,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:37:44,950 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2021-12-14 16:37:44,955 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 85 transitions, 182 flow. Second operand has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:44,955 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:37:44,955 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2021-12-14 16:37:44,956 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:37:45,518 INFO L129 PetriNetUnfolder]: 775/1868 cut-off events. [2021-12-14 16:37:45,518 INFO L130 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2021-12-14 16:37:45,528 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3178 conditions, 1868 events. 775/1868 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12614 event pairs, 68 based on Foata normal form. 63/1864 useless extension candidates. Maximal degree in co-relation 3140. Up to 401 conditions per place. [2021-12-14 16:37:45,541 INFO L132 encePairwiseOnDemand]: 92/105 looper letters, 31 selfloop transitions, 10 changer transitions 65/170 dead transitions. [2021-12-14 16:37:45,541 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 170 transitions, 579 flow [2021-12-14 16:37:45,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 16:37:45,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-14 16:37:45,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1165 transitions. [2021-12-14 16:37:45,565 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8534798534798534 [2021-12-14 16:37:45,566 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1165 transitions. [2021-12-14 16:37:45,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1165 transitions. [2021-12-14 16:37:45,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:37:45,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1165 transitions. [2021-12-14 16:37:45,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 89.61538461538461) internal successors, (1165), 13 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:45,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:45,590 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:45,591 INFO L186 Difference]: Start difference. First operand has 97 places, 85 transitions, 182 flow. Second operand 13 states and 1165 transitions. [2021-12-14 16:37:45,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 170 transitions, 579 flow [2021-12-14 16:37:45,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 170 transitions, 570 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-14 16:37:45,602 INFO L242 Difference]: Finished difference. Result has 117 places, 92 transitions, 290 flow [2021-12-14 16:37:45,604 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=290, PETRI_PLACES=117, PETRI_TRANSITIONS=92} [2021-12-14 16:37:45,608 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 20 predicate places. [2021-12-14 16:37:45,608 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 92 transitions, 290 flow [2021-12-14 16:37:45,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:45,609 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:37:45,609 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:37:45,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 16:37:45,610 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-14 16:37:45,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:37:45,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1961869134, now seen corresponding path program 1 times [2021-12-14 16:37:45,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:37:45,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017414634] [2021-12-14 16:37:45,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:37:45,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:37:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:37:45,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:37:45,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:37:45,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017414634] [2021-12-14 16:37:45,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017414634] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:37:45,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:37:45,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 16:37:45,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013355353] [2021-12-14 16:37:45,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:37:45,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 16:37:45,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:37:45,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 16:37:45,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 16:37:45,774 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 105 [2021-12-14 16:37:45,774 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 92 transitions, 290 flow. Second operand has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:45,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:37:45,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 105 [2021-12-14 16:37:45,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:37:45,975 INFO L129 PetriNetUnfolder]: 199/790 cut-off events. [2021-12-14 16:37:45,975 INFO L130 PetriNetUnfolder]: For 1383/1739 co-relation queries the response was YES. [2021-12-14 16:37:45,980 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2147 conditions, 790 events. 199/790 cut-off events. For 1383/1739 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5351 event pairs, 98 based on Foata normal form. 45/789 useless extension candidates. Maximal degree in co-relation 2100. Up to 222 conditions per place. [2021-12-14 16:37:45,983 INFO L132 encePairwiseOnDemand]: 99/105 looper letters, 13 selfloop transitions, 11 changer transitions 3/106 dead transitions. [2021-12-14 16:37:45,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 106 transitions, 438 flow [2021-12-14 16:37:45,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 16:37:45,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-14 16:37:45,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 826 transitions. [2021-12-14 16:37:45,987 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8740740740740741 [2021-12-14 16:37:45,987 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 826 transitions. [2021-12-14 16:37:45,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 826 transitions. [2021-12-14 16:37:45,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:37:45,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 826 transitions. [2021-12-14 16:37:45,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 91.77777777777777) internal successors, (826), 9 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:45,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:45,993 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:45,993 INFO L186 Difference]: Start difference. First operand has 117 places, 92 transitions, 290 flow. Second operand 9 states and 826 transitions. [2021-12-14 16:37:45,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 106 transitions, 438 flow [2021-12-14 16:37:46,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 106 transitions, 424 flow, removed 7 selfloop flow, removed 3 redundant places. [2021-12-14 16:37:46,005 INFO L242 Difference]: Finished difference. Result has 116 places, 100 transitions, 384 flow [2021-12-14 16:37:46,006 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=384, PETRI_PLACES=116, PETRI_TRANSITIONS=100} [2021-12-14 16:37:46,006 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 19 predicate places. [2021-12-14 16:37:46,007 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 100 transitions, 384 flow [2021-12-14 16:37:46,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:46,007 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:37:46,008 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:37:46,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 16:37:46,008 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-14 16:37:46,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:37:46,009 INFO L85 PathProgramCache]: Analyzing trace with hash 392357837, now seen corresponding path program 1 times [2021-12-14 16:37:46,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:37:46,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142994711] [2021-12-14 16:37:46,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:37:46,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:37:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:37:46,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:37:46,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:37:46,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142994711] [2021-12-14 16:37:46,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142994711] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:37:46,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:37:46,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:37:46,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859883123] [2021-12-14 16:37:46,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:37:46,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:37:46,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:37:46,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:37:46,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:37:46,207 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2021-12-14 16:37:46,208 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 100 transitions, 384 flow. Second operand has 7 states, 7 states have (on average 83.28571428571429) internal successors, (583), 7 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:46,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:37:46,209 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2021-12-14 16:37:46,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:37:46,640 INFO L129 PetriNetUnfolder]: 565/1582 cut-off events. [2021-12-14 16:37:46,641 INFO L130 PetriNetUnfolder]: For 3742/5722 co-relation queries the response was YES. [2021-12-14 16:37:46,647 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5206 conditions, 1582 events. 565/1582 cut-off events. For 3742/5722 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 11707 event pairs, 25 based on Foata normal form. 20/1562 useless extension candidates. Maximal degree in co-relation 5154. Up to 360 conditions per place. [2021-12-14 16:37:46,654 INFO L132 encePairwiseOnDemand]: 94/105 looper letters, 36 selfloop transitions, 12 changer transitions 74/186 dead transitions. [2021-12-14 16:37:46,655 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 186 transitions, 1286 flow [2021-12-14 16:37:46,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 16:37:46,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-14 16:37:46,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1138 transitions. [2021-12-14 16:37:46,663 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8336996336996337 [2021-12-14 16:37:46,664 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1138 transitions. [2021-12-14 16:37:46,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1138 transitions. [2021-12-14 16:37:46,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:37:46,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1138 transitions. [2021-12-14 16:37:46,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 87.53846153846153) internal successors, (1138), 13 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:46,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:46,671 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:46,671 INFO L186 Difference]: Start difference. First operand has 116 places, 100 transitions, 384 flow. Second operand 13 states and 1138 transitions. [2021-12-14 16:37:46,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 186 transitions, 1286 flow [2021-12-14 16:37:46,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 186 transitions, 1266 flow, removed 10 selfloop flow, removed 0 redundant places. [2021-12-14 16:37:46,686 INFO L242 Difference]: Finished difference. Result has 140 places, 98 transitions, 439 flow [2021-12-14 16:37:46,687 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=439, PETRI_PLACES=140, PETRI_TRANSITIONS=98} [2021-12-14 16:37:46,688 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 43 predicate places. [2021-12-14 16:37:46,689 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 98 transitions, 439 flow [2021-12-14 16:37:46,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.28571428571429) internal successors, (583), 7 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:46,689 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:37:46,690 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:37:46,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 16:37:46,690 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-14 16:37:46,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:37:46,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1879050399, now seen corresponding path program 1 times [2021-12-14 16:37:46,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:37:46,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690210755] [2021-12-14 16:37:46,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:37:46,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:37:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:37:46,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:37:46,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:37:46,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690210755] [2021-12-14 16:37:46,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690210755] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:37:46,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:37:46,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 16:37:46,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793456277] [2021-12-14 16:37:46,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:37:46,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 16:37:46,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:37:46,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 16:37:46,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-14 16:37:46,868 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2021-12-14 16:37:46,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 98 transitions, 439 flow. Second operand has 8 states, 8 states have (on average 83.125) internal successors, (665), 8 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:46,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:37:46,869 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2021-12-14 16:37:46,869 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:37:47,220 INFO L129 PetriNetUnfolder]: 291/1032 cut-off events. [2021-12-14 16:37:47,220 INFO L130 PetriNetUnfolder]: For 4585/5811 co-relation queries the response was YES. [2021-12-14 16:37:47,226 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3781 conditions, 1032 events. 291/1032 cut-off events. For 4585/5811 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 6919 event pairs, 44 based on Foata normal form. 24/1014 useless extension candidates. Maximal degree in co-relation 3715. Up to 180 conditions per place. [2021-12-14 16:37:47,231 INFO L132 encePairwiseOnDemand]: 93/105 looper letters, 34 selfloop transitions, 15 changer transitions 71/184 dead transitions. [2021-12-14 16:37:47,231 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 184 transitions, 1509 flow [2021-12-14 16:37:47,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 16:37:47,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-14 16:37:47,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 968 transitions. [2021-12-14 16:37:47,235 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8380952380952381 [2021-12-14 16:37:47,235 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 968 transitions. [2021-12-14 16:37:47,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 968 transitions. [2021-12-14 16:37:47,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:37:47,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 968 transitions. [2021-12-14 16:37:47,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 88.0) internal successors, (968), 11 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:47,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 105.0) internal successors, (1260), 12 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:47,243 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 105.0) internal successors, (1260), 12 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:47,244 INFO L186 Difference]: Start difference. First operand has 140 places, 98 transitions, 439 flow. Second operand 11 states and 968 transitions. [2021-12-14 16:37:47,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 184 transitions, 1509 flow [2021-12-14 16:37:47,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 184 transitions, 1407 flow, removed 42 selfloop flow, removed 8 redundant places. [2021-12-14 16:37:47,261 INFO L242 Difference]: Finished difference. Result has 135 places, 100 transitions, 503 flow [2021-12-14 16:37:47,262 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=503, PETRI_PLACES=135, PETRI_TRANSITIONS=100} [2021-12-14 16:37:47,263 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 38 predicate places. [2021-12-14 16:37:47,264 INFO L470 AbstractCegarLoop]: Abstraction has has 135 places, 100 transitions, 503 flow [2021-12-14 16:37:47,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 83.125) internal successors, (665), 8 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:47,264 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:37:47,264 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:37:47,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 16:37:47,265 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-14 16:37:47,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:37:47,266 INFO L85 PathProgramCache]: Analyzing trace with hash 174305271, now seen corresponding path program 1 times [2021-12-14 16:37:47,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:37:47,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083980739] [2021-12-14 16:37:47,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:37:47,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:37:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:37:47,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:37:47,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:37:47,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083980739] [2021-12-14 16:37:47,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083980739] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:37:47,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:37:47,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:37:47,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492668024] [2021-12-14 16:37:47,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:37:47,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:37:47,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:37:47,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:37:47,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:37:47,428 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2021-12-14 16:37:47,428 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 100 transitions, 503 flow. Second operand has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:47,429 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:37:47,429 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2021-12-14 16:37:47,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:37:47,681 INFO L129 PetriNetUnfolder]: 109/559 cut-off events. [2021-12-14 16:37:47,681 INFO L130 PetriNetUnfolder]: For 2726/3006 co-relation queries the response was YES. [2021-12-14 16:37:47,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2035 conditions, 559 events. 109/559 cut-off events. For 2726/3006 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3368 event pairs, 13 based on Foata normal form. 15/559 useless extension candidates. Maximal degree in co-relation 1984. Up to 93 conditions per place. [2021-12-14 16:37:47,688 INFO L132 encePairwiseOnDemand]: 95/105 looper letters, 36 selfloop transitions, 15 changer transitions 27/142 dead transitions. [2021-12-14 16:37:47,688 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 142 transitions, 1098 flow [2021-12-14 16:37:47,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 16:37:47,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-14 16:37:47,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1114 transitions. [2021-12-14 16:37:47,692 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8161172161172161 [2021-12-14 16:37:47,692 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1114 transitions. [2021-12-14 16:37:47,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1114 transitions. [2021-12-14 16:37:47,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:37:47,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1114 transitions. [2021-12-14 16:37:47,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 85.6923076923077) internal successors, (1114), 13 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:47,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:47,700 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:47,701 INFO L186 Difference]: Start difference. First operand has 135 places, 100 transitions, 503 flow. Second operand 13 states and 1114 transitions. [2021-12-14 16:37:47,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 142 transitions, 1098 flow [2021-12-14 16:37:47,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 142 transitions, 975 flow, removed 35 selfloop flow, removed 12 redundant places. [2021-12-14 16:37:47,710 INFO L242 Difference]: Finished difference. Result has 141 places, 102 transitions, 559 flow [2021-12-14 16:37:47,711 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=559, PETRI_PLACES=141, PETRI_TRANSITIONS=102} [2021-12-14 16:37:47,712 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 44 predicate places. [2021-12-14 16:37:47,712 INFO L470 AbstractCegarLoop]: Abstraction has has 141 places, 102 transitions, 559 flow [2021-12-14 16:37:47,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:47,712 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:37:47,712 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:37:47,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 16:37:47,713 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-14 16:37:47,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:37:47,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1444025040, now seen corresponding path program 1 times [2021-12-14 16:37:47,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:37:47,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506057596] [2021-12-14 16:37:47,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:37:47,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:37:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:37:47,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:37:47,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:37:47,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506057596] [2021-12-14 16:37:47,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506057596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:37:47,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:37:47,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:37:47,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307633468] [2021-12-14 16:37:47,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:37:47,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:37:47,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:37:47,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:37:47,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:37:47,836 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2021-12-14 16:37:47,836 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 102 transitions, 559 flow. Second operand has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:47,837 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:37:47,837 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2021-12-14 16:37:47,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:37:48,088 INFO L129 PetriNetUnfolder]: 81/526 cut-off events. [2021-12-14 16:37:48,089 INFO L130 PetriNetUnfolder]: For 2966/3393 co-relation queries the response was YES. [2021-12-14 16:37:48,092 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1903 conditions, 526 events. 81/526 cut-off events. For 2966/3393 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3295 event pairs, 7 based on Foata normal form. 16/529 useless extension candidates. Maximal degree in co-relation 1831. Up to 83 conditions per place. [2021-12-14 16:37:48,094 INFO L132 encePairwiseOnDemand]: 94/105 looper letters, 32 selfloop transitions, 19 changer transitions 24/139 dead transitions. [2021-12-14 16:37:48,094 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 139 transitions, 1105 flow [2021-12-14 16:37:48,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 16:37:48,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-14 16:37:48,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1115 transitions. [2021-12-14 16:37:48,098 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8168498168498168 [2021-12-14 16:37:48,098 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1115 transitions. [2021-12-14 16:37:48,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1115 transitions. [2021-12-14 16:37:48,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:37:48,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1115 transitions. [2021-12-14 16:37:48,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 85.76923076923077) internal successors, (1115), 13 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:48,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:48,105 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:48,105 INFO L186 Difference]: Start difference. First operand has 141 places, 102 transitions, 559 flow. Second operand 13 states and 1115 transitions. [2021-12-14 16:37:48,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 139 transitions, 1105 flow [2021-12-14 16:37:48,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 139 transitions, 933 flow, removed 86 selfloop flow, removed 9 redundant places. [2021-12-14 16:37:48,115 INFO L242 Difference]: Finished difference. Result has 146 places, 104 transitions, 619 flow [2021-12-14 16:37:48,115 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=619, PETRI_PLACES=146, PETRI_TRANSITIONS=104} [2021-12-14 16:37:48,118 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 49 predicate places. [2021-12-14 16:37:48,118 INFO L470 AbstractCegarLoop]: Abstraction has has 146 places, 104 transitions, 619 flow [2021-12-14 16:37:48,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:48,118 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:37:48,119 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:37:48,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 16:37:48,119 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-14 16:37:48,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:37:48,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1275871501, now seen corresponding path program 1 times [2021-12-14 16:37:48,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:37:48,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693524674] [2021-12-14 16:37:48,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:37:48,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:37:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:37:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:37:48,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:37:48,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693524674] [2021-12-14 16:37:48,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693524674] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:37:48,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:37:48,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 16:37:48,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40721701] [2021-12-14 16:37:48,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:37:48,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 16:37:48,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:37:48,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 16:37:48,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 16:37:48,226 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 105 [2021-12-14 16:37:48,226 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 104 transitions, 619 flow. Second operand has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:48,227 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:37:48,227 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 105 [2021-12-14 16:37:48,227 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:37:48,890 INFO L129 PetriNetUnfolder]: 2307/4679 cut-off events. [2021-12-14 16:37:48,890 INFO L130 PetriNetUnfolder]: For 3721/4240 co-relation queries the response was YES. [2021-12-14 16:37:48,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9854 conditions, 4679 events. 2307/4679 cut-off events. For 3721/4240 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 40348 event pairs, 97 based on Foata normal form. 7/4181 useless extension candidates. Maximal degree in co-relation 9820. Up to 1511 conditions per place. [2021-12-14 16:37:48,936 INFO L132 encePairwiseOnDemand]: 94/105 looper letters, 35 selfloop transitions, 20 changer transitions 0/143 dead transitions. [2021-12-14 16:37:48,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 143 transitions, 811 flow [2021-12-14 16:37:48,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 16:37:48,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-14 16:37:48,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 917 transitions. [2021-12-14 16:37:48,939 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8733333333333333 [2021-12-14 16:37:48,939 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 917 transitions. [2021-12-14 16:37:48,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 917 transitions. [2021-12-14 16:37:48,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:37:48,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 917 transitions. [2021-12-14 16:37:48,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 91.7) internal successors, (917), 10 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:48,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:48,945 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:48,945 INFO L186 Difference]: Start difference. First operand has 146 places, 104 transitions, 619 flow. Second operand 10 states and 917 transitions. [2021-12-14 16:37:48,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 143 transitions, 811 flow [2021-12-14 16:37:48,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 143 transitions, 733 flow, removed 33 selfloop flow, removed 13 redundant places. [2021-12-14 16:37:48,957 INFO L242 Difference]: Finished difference. Result has 139 places, 122 transitions, 684 flow [2021-12-14 16:37:48,957 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=684, PETRI_PLACES=139, PETRI_TRANSITIONS=122} [2021-12-14 16:37:48,958 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 42 predicate places. [2021-12-14 16:37:48,958 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 122 transitions, 684 flow [2021-12-14 16:37:48,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:48,959 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:37:48,959 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:37:48,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 16:37:48,959 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-14 16:37:48,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:37:48,961 INFO L85 PathProgramCache]: Analyzing trace with hash 766309125, now seen corresponding path program 1 times [2021-12-14 16:37:48,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:37:48,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705908373] [2021-12-14 16:37:48,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:37:48,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:37:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:37:49,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:37:49,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:37:49,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705908373] [2021-12-14 16:37:49,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705908373] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:37:49,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:37:49,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:37:49,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963060286] [2021-12-14 16:37:49,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:37:49,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:37:49,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:37:49,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:37:49,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:37:49,080 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 105 [2021-12-14 16:37:49,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 122 transitions, 684 flow. Second operand has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:49,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:37:49,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 105 [2021-12-14 16:37:49,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:37:50,022 INFO L129 PetriNetUnfolder]: 2605/5317 cut-off events. [2021-12-14 16:37:50,022 INFO L130 PetriNetUnfolder]: For 16237/18101 co-relation queries the response was YES. [2021-12-14 16:37:50,059 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20317 conditions, 5317 events. 2605/5317 cut-off events. For 16237/18101 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 47610 event pairs, 23 based on Foata normal form. 316/5234 useless extension candidates. Maximal degree in co-relation 20289. Up to 2821 conditions per place. [2021-12-14 16:37:50,084 INFO L132 encePairwiseOnDemand]: 94/105 looper letters, 41 selfloop transitions, 38 changer transitions 0/167 dead transitions. [2021-12-14 16:37:50,085 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 167 transitions, 1134 flow [2021-12-14 16:37:50,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 16:37:50,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-14 16:37:50,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1193 transitions. [2021-12-14 16:37:50,088 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.873992673992674 [2021-12-14 16:37:50,089 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1193 transitions. [2021-12-14 16:37:50,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1193 transitions. [2021-12-14 16:37:50,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:37:50,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1193 transitions. [2021-12-14 16:37:50,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 91.76923076923077) internal successors, (1193), 13 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:50,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:50,096 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:50,097 INFO L186 Difference]: Start difference. First operand has 139 places, 122 transitions, 684 flow. Second operand 13 states and 1193 transitions. [2021-12-14 16:37:50,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 167 transitions, 1134 flow [2021-12-14 16:37:50,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 167 transitions, 1132 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-14 16:37:50,121 INFO L242 Difference]: Finished difference. Result has 156 places, 142 transitions, 975 flow [2021-12-14 16:37:50,122 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=975, PETRI_PLACES=156, PETRI_TRANSITIONS=142} [2021-12-14 16:37:50,124 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 59 predicate places. [2021-12-14 16:37:50,125 INFO L470 AbstractCegarLoop]: Abstraction has has 156 places, 142 transitions, 975 flow [2021-12-14 16:37:50,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:50,125 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:37:50,125 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:37:50,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 16:37:50,126 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-14 16:37:50,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:37:50,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1178474348, now seen corresponding path program 1 times [2021-12-14 16:37:50,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:37:50,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39124438] [2021-12-14 16:37:50,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:37:50,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:37:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:37:50,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:37:50,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:37:50,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39124438] [2021-12-14 16:37:50,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39124438] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:37:50,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:37:50,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 16:37:50,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276565054] [2021-12-14 16:37:50,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:37:50,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 16:37:50,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:37:50,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 16:37:50,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-14 16:37:50,224 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 105 [2021-12-14 16:37:50,224 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 142 transitions, 975 flow. Second operand has 8 states, 8 states have (on average 87.625) internal successors, (701), 8 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:50,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:37:50,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 105 [2021-12-14 16:37:50,225 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:37:51,287 INFO L129 PetriNetUnfolder]: 2585/5289 cut-off events. [2021-12-14 16:37:51,287 INFO L130 PetriNetUnfolder]: For 46661/50826 co-relation queries the response was YES. [2021-12-14 16:37:51,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28932 conditions, 5289 events. 2585/5289 cut-off events. For 46661/50826 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 48227 event pairs, 4 based on Foata normal form. 478/5372 useless extension candidates. Maximal degree in co-relation 28898. Up to 2781 conditions per place. [2021-12-14 16:37:51,359 INFO L132 encePairwiseOnDemand]: 94/105 looper letters, 36 selfloop transitions, 58 changer transitions 12/194 dead transitions. [2021-12-14 16:37:51,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 194 transitions, 1709 flow [2021-12-14 16:37:51,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-14 16:37:51,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-14 16:37:51,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1469 transitions. [2021-12-14 16:37:51,364 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8744047619047619 [2021-12-14 16:37:51,365 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1469 transitions. [2021-12-14 16:37:51,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1469 transitions. [2021-12-14 16:37:51,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:37:51,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1469 transitions. [2021-12-14 16:37:51,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 91.8125) internal successors, (1469), 16 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:51,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 105.0) internal successors, (1785), 17 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:51,375 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 105.0) internal successors, (1785), 17 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:51,375 INFO L186 Difference]: Start difference. First operand has 156 places, 142 transitions, 975 flow. Second operand 16 states and 1469 transitions. [2021-12-14 16:37:51,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 194 transitions, 1709 flow [2021-12-14 16:37:51,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 194 transitions, 1592 flow, removed 46 selfloop flow, removed 5 redundant places. [2021-12-14 16:37:51,539 INFO L242 Difference]: Finished difference. Result has 170 places, 168 transitions, 1327 flow [2021-12-14 16:37:51,539 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1327, PETRI_PLACES=170, PETRI_TRANSITIONS=168} [2021-12-14 16:37:51,540 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 73 predicate places. [2021-12-14 16:37:51,541 INFO L470 AbstractCegarLoop]: Abstraction has has 170 places, 168 transitions, 1327 flow [2021-12-14 16:37:51,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 87.625) internal successors, (701), 8 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:51,541 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:37:51,541 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:37:51,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 16:37:51,542 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-14 16:37:51,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:37:51,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1944792499, now seen corresponding path program 1 times [2021-12-14 16:37:51,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:37:51,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105840739] [2021-12-14 16:37:51,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:37:51,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:37:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:37:51,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:37:51,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:37:51,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105840739] [2021-12-14 16:37:51,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105840739] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:37:51,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:37:51,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:37:51,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075611713] [2021-12-14 16:37:51,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:37:51,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:37:51,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:37:51,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:37:51,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:37:51,641 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 105 [2021-12-14 16:37:51,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 168 transitions, 1327 flow. Second operand has 7 states, 7 states have (on average 88.14285714285714) internal successors, (617), 7 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:51,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:37:51,642 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 105 [2021-12-14 16:37:51,642 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:37:52,334 INFO L129 PetriNetUnfolder]: 1736/4994 cut-off events. [2021-12-14 16:37:52,334 INFO L130 PetriNetUnfolder]: For 34300/34907 co-relation queries the response was YES. [2021-12-14 16:37:52,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21947 conditions, 4994 events. 1736/4994 cut-off events. For 34300/34907 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 54319 event pairs, 2 based on Foata normal form. 8/4720 useless extension candidates. Maximal degree in co-relation 21910. Up to 1613 conditions per place. [2021-12-14 16:37:52,398 INFO L132 encePairwiseOnDemand]: 98/105 looper letters, 21 selfloop transitions, 12 changer transitions 4/180 dead transitions. [2021-12-14 16:37:52,398 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 180 transitions, 1458 flow [2021-12-14 16:37:52,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 16:37:52,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-14 16:37:52,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 717 transitions. [2021-12-14 16:37:52,400 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8535714285714285 [2021-12-14 16:37:52,400 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 717 transitions. [2021-12-14 16:37:52,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 717 transitions. [2021-12-14 16:37:52,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:37:52,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 717 transitions. [2021-12-14 16:37:52,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 89.625) internal successors, (717), 8 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:52,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 105.0) internal successors, (945), 9 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:52,405 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 105.0) internal successors, (945), 9 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:52,405 INFO L186 Difference]: Start difference. First operand has 170 places, 168 transitions, 1327 flow. Second operand 8 states and 717 transitions. [2021-12-14 16:37:52,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 180 transitions, 1458 flow [2021-12-14 16:37:53,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 180 transitions, 1139 flow, removed 117 selfloop flow, removed 14 redundant places. [2021-12-14 16:37:53,020 INFO L242 Difference]: Finished difference. Result has 168 places, 170 transitions, 1075 flow [2021-12-14 16:37:53,020 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1008, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1075, PETRI_PLACES=168, PETRI_TRANSITIONS=170} [2021-12-14 16:37:53,021 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 71 predicate places. [2021-12-14 16:37:53,021 INFO L470 AbstractCegarLoop]: Abstraction has has 168 places, 170 transitions, 1075 flow [2021-12-14 16:37:53,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.14285714285714) internal successors, (617), 7 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:53,021 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:37:53,021 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:37:53,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 16:37:53,022 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-14 16:37:53,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:37:53,022 INFO L85 PathProgramCache]: Analyzing trace with hash -659268135, now seen corresponding path program 2 times [2021-12-14 16:37:53,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:37:53,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520069261] [2021-12-14 16:37:53,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:37:53,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:37:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:37:53,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:37:53,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:37:53,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520069261] [2021-12-14 16:37:53,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520069261] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:37:53,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:37:53,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 16:37:53,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364697460] [2021-12-14 16:37:53,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:37:53,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 16:37:53,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:37:53,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 16:37:53,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-14 16:37:53,123 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 105 [2021-12-14 16:37:53,124 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 170 transitions, 1075 flow. Second operand has 9 states, 9 states have (on average 87.55555555555556) internal successors, (788), 9 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:53,124 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:37:53,124 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 105 [2021-12-14 16:37:53,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:37:54,044 INFO L129 PetriNetUnfolder]: 2823/6034 cut-off events. [2021-12-14 16:37:54,045 INFO L130 PetriNetUnfolder]: For 12965/14790 co-relation queries the response was YES. [2021-12-14 16:37:54,097 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21613 conditions, 6034 events. 2823/6034 cut-off events. For 12965/14790 co-relation queries the response was YES. Maximal size of possible extension queue 867. Compared 59663 event pairs, 4 based on Foata normal form. 481/6055 useless extension candidates. Maximal degree in co-relation 21577. Up to 858 conditions per place. [2021-12-14 16:37:54,107 INFO L132 encePairwiseOnDemand]: 94/105 looper letters, 23 selfloop transitions, 51 changer transitions 57/209 dead transitions. [2021-12-14 16:37:54,107 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 209 transitions, 1568 flow [2021-12-14 16:37:54,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-14 16:37:54,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-14 16:37:54,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1724 transitions. [2021-12-14 16:37:54,110 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8641604010025062 [2021-12-14 16:37:54,110 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1724 transitions. [2021-12-14 16:37:54,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1724 transitions. [2021-12-14 16:37:54,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:37:54,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1724 transitions. [2021-12-14 16:37:54,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 90.73684210526316) internal successors, (1724), 19 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:54,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 105.0) internal successors, (2100), 20 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:54,119 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 105.0) internal successors, (2100), 20 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:54,119 INFO L186 Difference]: Start difference. First operand has 168 places, 170 transitions, 1075 flow. Second operand 19 states and 1724 transitions. [2021-12-14 16:37:54,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 209 transitions, 1568 flow [2021-12-14 16:37:54,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 209 transitions, 1531 flow, removed 6 selfloop flow, removed 7 redundant places. [2021-12-14 16:37:54,426 INFO L242 Difference]: Finished difference. Result has 182 places, 143 transitions, 905 flow [2021-12-14 16:37:54,426 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=905, PETRI_PLACES=182, PETRI_TRANSITIONS=143} [2021-12-14 16:37:54,427 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 85 predicate places. [2021-12-14 16:37:54,427 INFO L470 AbstractCegarLoop]: Abstraction has has 182 places, 143 transitions, 905 flow [2021-12-14 16:37:54,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 87.55555555555556) internal successors, (788), 9 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:54,428 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:37:54,428 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:37:54,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 16:37:54,428 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-14 16:37:54,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:37:54,429 INFO L85 PathProgramCache]: Analyzing trace with hash 259672476, now seen corresponding path program 1 times [2021-12-14 16:37:54,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:37:54,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916596303] [2021-12-14 16:37:54,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:37:54,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:37:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:37:54,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:37:54,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:37:54,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916596303] [2021-12-14 16:37:54,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916596303] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:37:54,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:37:54,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 16:37:54,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118864638] [2021-12-14 16:37:54,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:37:54,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 16:37:54,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:37:54,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 16:37:54,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-14 16:37:54,538 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2021-12-14 16:37:54,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 143 transitions, 905 flow. Second operand has 8 states, 8 states have (on average 83.5) internal successors, (668), 8 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:54,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:37:54,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2021-12-14 16:37:54,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:37:54,825 INFO L129 PetriNetUnfolder]: 522/1939 cut-off events. [2021-12-14 16:37:54,825 INFO L130 PetriNetUnfolder]: For 4506/4615 co-relation queries the response was YES. [2021-12-14 16:37:54,841 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5903 conditions, 1939 events. 522/1939 cut-off events. For 4506/4615 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 18979 event pairs, 4 based on Foata normal form. 1/1855 useless extension candidates. Maximal degree in co-relation 5866. Up to 236 conditions per place. [2021-12-14 16:37:54,844 INFO L132 encePairwiseOnDemand]: 96/105 looper letters, 0 selfloop transitions, 0 changer transitions 144/144 dead transitions. [2021-12-14 16:37:54,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 144 transitions, 993 flow [2021-12-14 16:37:54,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 16:37:54,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-14 16:37:54,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 672 transitions. [2021-12-14 16:37:54,846 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8 [2021-12-14 16:37:54,846 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 672 transitions. [2021-12-14 16:37:54,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 672 transitions. [2021-12-14 16:37:54,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:37:54,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 672 transitions. [2021-12-14 16:37:54,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:54,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 105.0) internal successors, (945), 9 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:54,849 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 105.0) internal successors, (945), 9 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:54,849 INFO L186 Difference]: Start difference. First operand has 182 places, 143 transitions, 905 flow. Second operand 8 states and 672 transitions. [2021-12-14 16:37:54,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 144 transitions, 993 flow [2021-12-14 16:37:54,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 144 transitions, 797 flow, removed 20 selfloop flow, removed 26 redundant places. [2021-12-14 16:37:54,890 INFO L242 Difference]: Finished difference. Result has 157 places, 0 transitions, 0 flow [2021-12-14 16:37:54,890 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=157, PETRI_TRANSITIONS=0} [2021-12-14 16:37:54,891 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 60 predicate places. [2021-12-14 16:37:54,891 INFO L470 AbstractCegarLoop]: Abstraction has has 157 places, 0 transitions, 0 flow [2021-12-14 16:37:54,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 83.5) internal successors, (668), 8 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:37:54,894 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2021-12-14 16:37:54,894 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2021-12-14 16:37:54,894 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 5 remaining) [2021-12-14 16:37:54,895 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 5 remaining) [2021-12-14 16:37:54,895 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION (0 of 5 remaining) [2021-12-14 16:37:54,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 16:37:54,899 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:37:54,901 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-14 16:37:54,901 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 16:37:54,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 04:37:54 BasicIcfg [2021-12-14 16:37:54,904 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 16:37:54,905 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 16:37:54,905 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 16:37:54,906 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 16:37:54,906 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:37:44" (3/4) ... [2021-12-14 16:37:54,908 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-14 16:37:54,914 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-12-14 16:37:54,914 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-12-14 16:37:54,914 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-12-14 16:37:54,914 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2021-12-14 16:37:54,919 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-12-14 16:37:54,920 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-14 16:37:54,920 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-14 16:37:54,920 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-14 16:37:54,952 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 16:37:54,952 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 16:37:54,953 INFO L158 Benchmark]: Toolchain (without parser) took 11747.44ms. Allocated memory was 100.7MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 71.1MB in the beginning and 983.9MB in the end (delta: -912.8MB). Peak memory consumption was 463.4MB. Max. memory is 16.1GB. [2021-12-14 16:37:54,953 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 100.7MB. Free memory was 58.1MB in the beginning and 58.1MB in the end (delta: 47.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 16:37:54,953 INFO L158 Benchmark]: CACSL2BoogieTranslator took 380.69ms. Allocated memory is still 100.7MB. Free memory was 71.1MB in the beginning and 66.3MB in the end (delta: 4.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-14 16:37:54,954 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.09ms. Allocated memory is still 100.7MB. Free memory was 66.3MB in the beginning and 64.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 16:37:54,954 INFO L158 Benchmark]: Boogie Preprocessor took 21.03ms. Allocated memory is still 100.7MB. Free memory was 64.2MB in the beginning and 62.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 16:37:54,954 INFO L158 Benchmark]: RCFGBuilder took 445.99ms. Allocated memory is still 100.7MB. Free memory was 62.8MB in the beginning and 50.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-14 16:37:54,955 INFO L158 Benchmark]: TraceAbstraction took 10809.53ms. Allocated memory was 100.7MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 49.5MB in the beginning and 987.0MB in the end (delta: -937.5MB). Peak memory consumption was 443.2MB. Max. memory is 16.1GB. [2021-12-14 16:37:54,955 INFO L158 Benchmark]: Witness Printer took 46.90ms. Allocated memory is still 1.5GB. Free memory was 987.0MB in the beginning and 983.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 16:37:54,957 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 100.7MB. Free memory was 58.1MB in the beginning and 58.1MB in the end (delta: 47.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 380.69ms. Allocated memory is still 100.7MB. Free memory was 71.1MB in the beginning and 66.3MB in the end (delta: 4.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.09ms. Allocated memory is still 100.7MB. Free memory was 66.3MB in the beginning and 64.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.03ms. Allocated memory is still 100.7MB. Free memory was 64.2MB in the beginning and 62.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 445.99ms. Allocated memory is still 100.7MB. Free memory was 62.8MB in the beginning and 50.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 10809.53ms. Allocated memory was 100.7MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 49.5MB in the beginning and 987.0MB in the end (delta: -937.5MB). Peak memory consumption was 443.2MB. Max. memory is 16.1GB. * Witness Printer took 46.90ms. Allocated memory is still 1.5GB. Free memory was 987.0MB in the beginning and 983.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 134 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.6s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 582 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 582 mSDsluCounter, 806 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 855 mSDsCounter, 194 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 959 IncrementalHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 194 mSolverCounterUnsat, 180 mSDtfsCounter, 959 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1327occurred in iteration=9, InterpolantAutomatonStates: 146, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 822 NumberOfCodeBlocks, 822 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 810 ConstructedInterpolants, 0 QuantifiedInterpolants, 3256 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-14 16:37:55,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE