./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 792abe541332f7dc398bc25a6deb152789a85df6c33026f5ef70dc244a881f99 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:02:53,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:02:53,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:02:53,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:02:53,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:02:53,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:02:53,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:02:53,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:02:53,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:02:53,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:02:53,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:02:53,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:02:53,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:02:53,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:02:53,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:02:53,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:02:53,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:02:53,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:02:53,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:02:53,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:02:53,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:02:53,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:02:53,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:02:53,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:02:53,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:02:53,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:02:53,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:02:53,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:02:53,874 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:02:53,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:02:53,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:02:53,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:02:53,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:02:53,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:02:53,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:02:53,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:02:53,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:02:53,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:02:53,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:02:53,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:02:53,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:02:53,881 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 03:02:53,895 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:02:53,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:02:53,895 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:02:53,896 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:02:53,896 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:02:53,896 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:02:53,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:02:53,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:02:53,897 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:02:53,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:02:53,898 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 03:02:53,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:02:53,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 03:02:53,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:02:53,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:02:53,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:02:53,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:02:53,899 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 03:02:53,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:02:53,899 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:02:53,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:02:53,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:02:53,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:02:53,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:02:53,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:02:53,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:02:53,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:02:53,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:02:53,901 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:02:53,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:02:53,901 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:02:53,902 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:02:53,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:02:53,902 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:02:53,902 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 792abe541332f7dc398bc25a6deb152789a85df6c33026f5ef70dc244a881f99 [2021-12-16 03:02:54,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:02:54,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:02:54,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:02:54,113 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:02:54,114 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:02:54,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c [2021-12-16 03:02:54,213 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8a1e2a79/a371cb3dab2246aaab45f47a19997ef1/FLAG35b82aa7c [2021-12-16 03:02:54,547 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:02:54,547 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c [2021-12-16 03:02:54,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8a1e2a79/a371cb3dab2246aaab45f47a19997ef1/FLAG35b82aa7c [2021-12-16 03:02:54,564 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8a1e2a79/a371cb3dab2246aaab45f47a19997ef1 [2021-12-16 03:02:54,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:02:54,567 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:02:54,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:02:54,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:02:54,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:02:54,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:02:54" (1/1) ... [2021-12-16 03:02:54,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@309d5ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:54, skipping insertion in model container [2021-12-16 03:02:54,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:02:54" (1/1) ... [2021-12-16 03:02:54,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:02:54,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:02:54,754 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c[3512,3525] [2021-12-16 03:02:54,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:02:54,771 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:02:54,801 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c[3512,3525] [2021-12-16 03:02:54,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:02:54,811 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:02:54,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:54 WrapperNode [2021-12-16 03:02:54,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:02:54,829 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:02:54,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:02:54,829 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:02:54,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:54" (1/1) ... [2021-12-16 03:02:54,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:54" (1/1) ... [2021-12-16 03:02:54,861 INFO L137 Inliner]: procedures = 21, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 156 [2021-12-16 03:02:54,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:02:54,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:02:54,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:02:54,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:02:54,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:54" (1/1) ... [2021-12-16 03:02:54,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:54" (1/1) ... [2021-12-16 03:02:54,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:54" (1/1) ... [2021-12-16 03:02:54,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:54" (1/1) ... [2021-12-16 03:02:54,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:54" (1/1) ... [2021-12-16 03:02:54,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:54" (1/1) ... [2021-12-16 03:02:54,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:54" (1/1) ... [2021-12-16 03:02:54,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:02:54,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:02:54,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:02:54,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:02:54,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:54" (1/1) ... [2021-12-16 03:02:54,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:02:54,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:02:54,956 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) [2021-12-16 03:02:54,958 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 [2021-12-16 03:02:54,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:02:54,988 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-16 03:02:54,988 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-16 03:02:54,988 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-16 03:02:54,988 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-16 03:02:54,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:02:54,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:02:54,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:02:54,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-16 03:02:54,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-16 03:02:54,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:02:54,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:02:54,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:02:54,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:02:54,991 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-16 03:02:55,046 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:02:55,047 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:02:55,198 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:02:55,257 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:02:55,258 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 03:02:55,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:02:55 BoogieIcfgContainer [2021-12-16 03:02:55,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:02:55,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:02:55,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:02:55,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:02:55,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:02:54" (1/3) ... [2021-12-16 03:02:55,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7f07d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:02:55, skipping insertion in model container [2021-12-16 03:02:55,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:54" (2/3) ... [2021-12-16 03:02:55,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7f07d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:02:55, skipping insertion in model container [2021-12-16 03:02:55,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:02:55" (3/3) ... [2021-12-16 03:02:55,281 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-bakery-2.wvr.c [2021-12-16 03:02:55,285 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-16 03:02:55,285 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:02:55,285 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:02:55,285 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-16 03:02:55,324 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,325 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,325 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,325 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,325 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,325 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,325 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,325 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,326 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,326 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,326 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,326 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,326 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,326 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,327 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,327 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,327 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,327 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,327 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,327 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,328 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,328 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,328 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,328 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,328 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,328 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,328 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,328 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,329 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,329 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,329 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,329 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,331 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,332 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,332 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,332 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,332 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,332 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,333 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,333 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,355 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,355 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,356 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,356 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:55,358 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-16 03:02:55,393 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:02:55,398 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 [2021-12-16 03:02:55,398 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-16 03:02:55,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 113 places, 108 transitions, 232 flow [2021-12-16 03:02:55,470 INFO L129 PetriNetUnfolder]: 2/106 cut-off events. [2021-12-16 03:02:55,471 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-16 03:02:55,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 106 events. 2/106 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2021-12-16 03:02:55,474 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 108 transitions, 232 flow [2021-12-16 03:02:55,479 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 97 transitions, 206 flow [2021-12-16 03:02:55,506 INFO L129 PetriNetUnfolder]: 2/96 cut-off events. [2021-12-16 03:02:55,506 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-16 03:02:55,506 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:55,507 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:55,508 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:02:55,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:55,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1987416869, now seen corresponding path program 1 times [2021-12-16 03:02:55,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:55,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609340295] [2021-12-16 03:02:55,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:55,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:56,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:56,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:56,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609340295] [2021-12-16 03:02:56,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609340295] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:56,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:56,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:02:56,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064930663] [2021-12-16 03:02:56,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:56,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:02:56,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:56,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:02:56,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:02:56,073 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 108 [2021-12-16 03:02:56,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 97 transitions, 206 flow. Second operand has 11 states, 11 states have (on average 75.72727272727273) internal successors, (833), 11 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:56,083 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:56,085 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 108 [2021-12-16 03:02:56,086 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:56,490 INFO L129 PetriNetUnfolder]: 46/296 cut-off events. [2021-12-16 03:02:56,490 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2021-12-16 03:02:56,493 INFO L84 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 296 events. 46/296 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1094 event pairs, 27 based on Foata normal form. 5/293 useless extension candidates. Maximal degree in co-relation 301. Up to 64 conditions per place. [2021-12-16 03:02:56,497 INFO L132 encePairwiseOnDemand]: 90/108 looper letters, 44 selfloop transitions, 13 changer transitions 16/136 dead transitions. [2021-12-16 03:02:56,497 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 136 transitions, 451 flow [2021-12-16 03:02:56,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-16 03:02:56,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-16 03:02:56,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1247 transitions. [2021-12-16 03:02:56,517 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7216435185185185 [2021-12-16 03:02:56,518 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1247 transitions. [2021-12-16 03:02:56,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1247 transitions. [2021-12-16 03:02:56,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:56,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1247 transitions. [2021-12-16 03:02:56,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 77.9375) internal successors, (1247), 16 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:56,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 108.0) internal successors, (1836), 17 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:56,547 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 108.0) internal successors, (1836), 17 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:56,549 INFO L186 Difference]: Start difference. First operand has 102 places, 97 transitions, 206 flow. Second operand 16 states and 1247 transitions. [2021-12-16 03:02:56,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 136 transitions, 451 flow [2021-12-16 03:02:56,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 136 transitions, 429 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-16 03:02:56,573 INFO L242 Difference]: Finished difference. Result has 118 places, 98 transitions, 246 flow [2021-12-16 03:02:56,575 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=246, PETRI_PLACES=118, PETRI_TRANSITIONS=98} [2021-12-16 03:02:56,578 INFO L334 CegarLoopForPetriNet]: 102 programPoint places, 16 predicate places. [2021-12-16 03:02:56,578 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 98 transitions, 246 flow [2021-12-16 03:02:56,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 75.72727272727273) internal successors, (833), 11 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:56,579 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:56,579 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:56,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:02:56,580 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:02:56,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:56,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1559964915, now seen corresponding path program 2 times [2021-12-16 03:02:56,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:56,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569153340] [2021-12-16 03:02:56,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:56,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:56,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:56,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:56,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569153340] [2021-12-16 03:02:56,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569153340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:56,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:56,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:02:56,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613942505] [2021-12-16 03:02:56,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:56,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:02:56,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:56,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:02:56,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:02:56,684 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 108 [2021-12-16 03:02:56,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 98 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:56,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:56,685 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 108 [2021-12-16 03:02:56,685 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:56,725 INFO L129 PetriNetUnfolder]: 31/234 cut-off events. [2021-12-16 03:02:56,725 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-12-16 03:02:56,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 234 events. 31/234 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 715 event pairs, 19 based on Foata normal form. 3/230 useless extension candidates. Maximal degree in co-relation 361. Up to 57 conditions per place. [2021-12-16 03:02:56,726 INFO L132 encePairwiseOnDemand]: 105/108 looper letters, 19 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2021-12-16 03:02:56,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 102 transitions, 297 flow [2021-12-16 03:02:56,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:02:56,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-16 03:02:56,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2021-12-16 03:02:56,728 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8827160493827161 [2021-12-16 03:02:56,728 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2021-12-16 03:02:56,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2021-12-16 03:02:56,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:56,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2021-12-16 03:02:56,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:56,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:56,730 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:56,730 INFO L186 Difference]: Start difference. First operand has 118 places, 98 transitions, 246 flow. Second operand 3 states and 286 transitions. [2021-12-16 03:02:56,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 102 transitions, 297 flow [2021-12-16 03:02:56,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 102 transitions, 287 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-12-16 03:02:56,733 INFO L242 Difference]: Finished difference. Result has 106 places, 98 transitions, 244 flow [2021-12-16 03:02:56,734 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=106, PETRI_TRANSITIONS=98} [2021-12-16 03:02:56,734 INFO L334 CegarLoopForPetriNet]: 102 programPoint places, 4 predicate places. [2021-12-16 03:02:56,734 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 98 transitions, 244 flow [2021-12-16 03:02:56,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:56,735 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:56,735 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:56,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 03:02:56,735 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:02:56,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:56,736 INFO L85 PathProgramCache]: Analyzing trace with hash 787868635, now seen corresponding path program 3 times [2021-12-16 03:02:56,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:56,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688487189] [2021-12-16 03:02:56,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:56,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:56,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:56,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:56,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688487189] [2021-12-16 03:02:56,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688487189] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:56,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:56,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:02:56,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054810755] [2021-12-16 03:02:56,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:56,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:02:56,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:56,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:02:56,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:02:56,925 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 108 [2021-12-16 03:02:56,927 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 98 transitions, 244 flow. Second operand has 11 states, 11 states have (on average 75.72727272727273) internal successors, (833), 11 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:56,928 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:56,928 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 108 [2021-12-16 03:02:56,928 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:57,187 INFO L129 PetriNetUnfolder]: 45/274 cut-off events. [2021-12-16 03:02:57,188 INFO L130 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2021-12-16 03:02:57,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 274 events. 45/274 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 958 event pairs, 23 based on Foata normal form. 1/272 useless extension candidates. Maximal degree in co-relation 279. Up to 60 conditions per place. [2021-12-16 03:02:57,191 INFO L132 encePairwiseOnDemand]: 94/108 looper letters, 32 selfloop transitions, 12 changer transitions 19/126 dead transitions. [2021-12-16 03:02:57,191 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 126 transitions, 441 flow [2021-12-16 03:02:57,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 03:02:57,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-16 03:02:57,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 939 transitions. [2021-12-16 03:02:57,193 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7245370370370371 [2021-12-16 03:02:57,193 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 939 transitions. [2021-12-16 03:02:57,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 939 transitions. [2021-12-16 03:02:57,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:57,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 939 transitions. [2021-12-16 03:02:57,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 78.25) internal successors, (939), 12 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:57,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 108.0) internal successors, (1404), 13 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:57,199 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 108.0) internal successors, (1404), 13 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:57,199 INFO L186 Difference]: Start difference. First operand has 106 places, 98 transitions, 244 flow. Second operand 12 states and 939 transitions. [2021-12-16 03:02:57,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 126 transitions, 441 flow [2021-12-16 03:02:57,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 126 transitions, 437 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-16 03:02:57,206 INFO L242 Difference]: Finished difference. Result has 118 places, 95 transitions, 257 flow [2021-12-16 03:02:57,207 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=257, PETRI_PLACES=118, PETRI_TRANSITIONS=95} [2021-12-16 03:02:57,211 INFO L334 CegarLoopForPetriNet]: 102 programPoint places, 16 predicate places. [2021-12-16 03:02:57,211 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 95 transitions, 257 flow [2021-12-16 03:02:57,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 75.72727272727273) internal successors, (833), 11 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:57,212 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:57,212 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:57,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 03:02:57,213 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:02:57,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:57,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1468726647, now seen corresponding path program 4 times [2021-12-16 03:02:57,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:57,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566074763] [2021-12-16 03:02:57,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:57,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:57,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:57,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:57,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566074763] [2021-12-16 03:02:57,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566074763] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:57,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:57,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 03:02:57,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835836143] [2021-12-16 03:02:57,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:57,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 03:02:57,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:57,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 03:02:57,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:02:57,377 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2021-12-16 03:02:57,378 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 95 transitions, 257 flow. Second operand has 8 states, 8 states have (on average 80.25) internal successors, (642), 8 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:57,378 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:57,378 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2021-12-16 03:02:57,378 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:57,497 INFO L129 PetriNetUnfolder]: 31/227 cut-off events. [2021-12-16 03:02:57,497 INFO L130 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2021-12-16 03:02:57,498 INFO L84 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 227 events. 31/227 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 624 event pairs, 14 based on Foata normal form. 3/227 useless extension candidates. Maximal degree in co-relation 411. Up to 57 conditions per place. [2021-12-16 03:02:57,498 INFO L132 encePairwiseOnDemand]: 100/108 looper letters, 28 selfloop transitions, 7 changer transitions 9/113 dead transitions. [2021-12-16 03:02:57,498 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 113 transitions, 388 flow [2021-12-16 03:02:57,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 03:02:57,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-16 03:02:57,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 661 transitions. [2021-12-16 03:02:57,500 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7650462962962963 [2021-12-16 03:02:57,500 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 661 transitions. [2021-12-16 03:02:57,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 661 transitions. [2021-12-16 03:02:57,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:57,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 661 transitions. [2021-12-16 03:02:57,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 82.625) internal successors, (661), 8 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:57,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:57,503 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:57,503 INFO L186 Difference]: Start difference. First operand has 118 places, 95 transitions, 257 flow. Second operand 8 states and 661 transitions. [2021-12-16 03:02:57,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 113 transitions, 388 flow [2021-12-16 03:02:57,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 113 transitions, 345 flow, removed 4 selfloop flow, removed 13 redundant places. [2021-12-16 03:02:57,506 INFO L242 Difference]: Finished difference. Result has 111 places, 98 transitions, 249 flow [2021-12-16 03:02:57,506 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=249, PETRI_PLACES=111, PETRI_TRANSITIONS=98} [2021-12-16 03:02:57,506 INFO L334 CegarLoopForPetriNet]: 102 programPoint places, 9 predicate places. [2021-12-16 03:02:57,507 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 98 transitions, 249 flow [2021-12-16 03:02:57,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 80.25) internal successors, (642), 8 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:57,507 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:57,507 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:57,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 03:02:57,507 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:02:57,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:57,508 INFO L85 PathProgramCache]: Analyzing trace with hash -385348485, now seen corresponding path program 5 times [2021-12-16 03:02:57,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:57,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805619051] [2021-12-16 03:02:57,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:57,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:57,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:57,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:57,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805619051] [2021-12-16 03:02:57,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805619051] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:57,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:57,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:02:57,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887811747] [2021-12-16 03:02:57,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:57,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:02:57,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:57,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:02:57,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:02:57,566 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 108 [2021-12-16 03:02:57,566 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 98 transitions, 249 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:57,566 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:57,567 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 108 [2021-12-16 03:02:57,567 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:57,605 INFO L129 PetriNetUnfolder]: 26/199 cut-off events. [2021-12-16 03:02:57,606 INFO L130 PetriNetUnfolder]: For 29/30 co-relation queries the response was YES. [2021-12-16 03:02:57,606 INFO L84 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 199 events. 26/199 cut-off events. For 29/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 486 event pairs, 13 based on Foata normal form. 5/201 useless extension candidates. Maximal degree in co-relation 228. Up to 53 conditions per place. [2021-12-16 03:02:57,607 INFO L132 encePairwiseOnDemand]: 105/108 looper letters, 22 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2021-12-16 03:02:57,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 103 transitions, 319 flow [2021-12-16 03:02:57,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:02:57,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-16 03:02:57,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2021-12-16 03:02:57,608 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8827160493827161 [2021-12-16 03:02:57,608 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2021-12-16 03:02:57,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2021-12-16 03:02:57,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:57,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2021-12-16 03:02:57,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:57,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:57,611 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:57,611 INFO L186 Difference]: Start difference. First operand has 111 places, 98 transitions, 249 flow. Second operand 3 states and 286 transitions. [2021-12-16 03:02:57,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 103 transitions, 319 flow [2021-12-16 03:02:57,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 103 transitions, 307 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-12-16 03:02:57,615 INFO L242 Difference]: Finished difference. Result has 108 places, 98 transitions, 248 flow [2021-12-16 03:02:57,616 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=108, PETRI_TRANSITIONS=98} [2021-12-16 03:02:57,617 INFO L334 CegarLoopForPetriNet]: 102 programPoint places, 6 predicate places. [2021-12-16 03:02:57,618 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 98 transitions, 248 flow [2021-12-16 03:02:57,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:57,618 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:57,618 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:57,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 03:02:57,619 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:02:57,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:57,620 INFO L85 PathProgramCache]: Analyzing trace with hash 2021957923, now seen corresponding path program 6 times [2021-12-16 03:02:57,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:57,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167839025] [2021-12-16 03:02:57,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:57,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:57,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:57,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:57,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167839025] [2021-12-16 03:02:57,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167839025] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:57,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:57,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 03:02:57,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443816225] [2021-12-16 03:02:57,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:57,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:02:57,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:57,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:02:57,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:02:57,767 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2021-12-16 03:02:57,767 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 98 transitions, 248 flow. Second operand has 7 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:57,768 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:57,768 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2021-12-16 03:02:57,768 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:57,869 INFO L129 PetriNetUnfolder]: 19/186 cut-off events. [2021-12-16 03:02:57,869 INFO L130 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2021-12-16 03:02:57,870 INFO L84 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 186 events. 19/186 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 403 event pairs, 14 based on Foata normal form. 3/186 useless extension candidates. Maximal degree in co-relation 190. Up to 53 conditions per place. [2021-12-16 03:02:57,871 INFO L132 encePairwiseOnDemand]: 102/108 looper letters, 23 selfloop transitions, 4 changer transitions 8/104 dead transitions. [2021-12-16 03:02:57,871 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 104 transitions, 335 flow [2021-12-16 03:02:57,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:02:57,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-16 03:02:57,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 575 transitions. [2021-12-16 03:02:57,873 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7605820105820106 [2021-12-16 03:02:57,873 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 575 transitions. [2021-12-16 03:02:57,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 575 transitions. [2021-12-16 03:02:57,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:57,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 575 transitions. [2021-12-16 03:02:57,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.14285714285714) internal successors, (575), 7 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:57,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:57,877 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:57,877 INFO L186 Difference]: Start difference. First operand has 108 places, 98 transitions, 248 flow. Second operand 7 states and 575 transitions. [2021-12-16 03:02:57,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 104 transitions, 335 flow [2021-12-16 03:02:57,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 104 transitions, 329 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-12-16 03:02:57,881 INFO L242 Difference]: Finished difference. Result has 113 places, 95 transitions, 236 flow [2021-12-16 03:02:57,882 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=113, PETRI_TRANSITIONS=95} [2021-12-16 03:02:57,884 INFO L334 CegarLoopForPetriNet]: 102 programPoint places, 11 predicate places. [2021-12-16 03:02:57,884 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 95 transitions, 236 flow [2021-12-16 03:02:57,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:57,884 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:57,885 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:57,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 03:02:57,885 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:02:57,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:57,886 INFO L85 PathProgramCache]: Analyzing trace with hash 381697775, now seen corresponding path program 7 times [2021-12-16 03:02:57,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:57,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056426726] [2021-12-16 03:02:57,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:57,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:58,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:58,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:58,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056426726] [2021-12-16 03:02:58,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056426726] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:58,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:58,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 03:02:58,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879457072] [2021-12-16 03:02:58,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:58,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:02:58,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:58,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:02:58,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:02:58,067 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2021-12-16 03:02:58,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 95 transitions, 236 flow. Second operand has 7 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:58,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:58,067 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2021-12-16 03:02:58,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:58,158 INFO L129 PetriNetUnfolder]: 14/166 cut-off events. [2021-12-16 03:02:58,158 INFO L130 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2021-12-16 03:02:58,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 166 events. 14/166 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 286 event pairs, 8 based on Foata normal form. 4/167 useless extension candidates. Maximal degree in co-relation 199. Up to 44 conditions per place. [2021-12-16 03:02:58,159 INFO L132 encePairwiseOnDemand]: 101/108 looper letters, 22 selfloop transitions, 6 changer transitions 5/102 dead transitions. [2021-12-16 03:02:58,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 102 transitions, 326 flow [2021-12-16 03:02:58,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:02:58,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-16 03:02:58,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 573 transitions. [2021-12-16 03:02:58,161 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7579365079365079 [2021-12-16 03:02:58,161 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 573 transitions. [2021-12-16 03:02:58,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 573 transitions. [2021-12-16 03:02:58,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:58,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 573 transitions. [2021-12-16 03:02:58,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:58,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:58,165 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:58,165 INFO L186 Difference]: Start difference. First operand has 113 places, 95 transitions, 236 flow. Second operand 7 states and 573 transitions. [2021-12-16 03:02:58,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 102 transitions, 326 flow [2021-12-16 03:02:58,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 102 transitions, 310 flow, removed 3 selfloop flow, removed 7 redundant places. [2021-12-16 03:02:58,167 INFO L242 Difference]: Finished difference. Result has 110 places, 95 transitions, 238 flow [2021-12-16 03:02:58,167 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=238, PETRI_PLACES=110, PETRI_TRANSITIONS=95} [2021-12-16 03:02:58,168 INFO L334 CegarLoopForPetriNet]: 102 programPoint places, 8 predicate places. [2021-12-16 03:02:58,168 INFO L470 AbstractCegarLoop]: Abstraction has has 110 places, 95 transitions, 238 flow [2021-12-16 03:02:58,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:58,168 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:58,169 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:58,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 03:02:58,169 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:02:58,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:58,169 INFO L85 PathProgramCache]: Analyzing trace with hash -141031697, now seen corresponding path program 8 times [2021-12-16 03:02:58,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:58,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050733220] [2021-12-16 03:02:58,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:58,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:58,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:58,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:58,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050733220] [2021-12-16 03:02:58,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050733220] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:58,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:58,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 03:02:58,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714368480] [2021-12-16 03:02:58,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:58,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 03:02:58,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:58,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 03:02:58,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:02:58,296 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2021-12-16 03:02:58,297 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 95 transitions, 238 flow. Second operand has 8 states, 8 states have (on average 80.25) internal successors, (642), 8 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:58,297 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:58,297 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2021-12-16 03:02:58,297 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:58,332 INFO L129 PetriNetUnfolder]: 4/84 cut-off events. [2021-12-16 03:02:58,332 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2021-12-16 03:02:58,332 INFO L84 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 84 events. 4/84 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 0 based on Foata normal form. 3/87 useless extension candidates. Maximal degree in co-relation 70. Up to 10 conditions per place. [2021-12-16 03:02:58,332 INFO L132 encePairwiseOnDemand]: 99/108 looper letters, 0 selfloop transitions, 0 changer transitions 73/73 dead transitions. [2021-12-16 03:02:58,332 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 73 transitions, 223 flow [2021-12-16 03:02:58,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 03:02:58,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-16 03:02:58,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 636 transitions. [2021-12-16 03:02:58,334 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7361111111111112 [2021-12-16 03:02:58,334 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 636 transitions. [2021-12-16 03:02:58,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 636 transitions. [2021-12-16 03:02:58,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:58,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 636 transitions. [2021-12-16 03:02:58,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 79.5) internal successors, (636), 8 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:58,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:58,337 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:58,337 INFO L186 Difference]: Start difference. First operand has 110 places, 95 transitions, 238 flow. Second operand 8 states and 636 transitions. [2021-12-16 03:02:58,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 73 transitions, 223 flow [2021-12-16 03:02:58,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 73 transitions, 204 flow, removed 1 selfloop flow, removed 8 redundant places. [2021-12-16 03:02:58,338 INFO L242 Difference]: Finished difference. Result has 85 places, 0 transitions, 0 flow [2021-12-16 03:02:58,338 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=85, PETRI_TRANSITIONS=0} [2021-12-16 03:02:58,338 INFO L334 CegarLoopForPetriNet]: 102 programPoint places, -17 predicate places. [2021-12-16 03:02:58,339 INFO L470 AbstractCegarLoop]: Abstraction has has 85 places, 0 transitions, 0 flow [2021-12-16 03:02:58,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 80.25) internal successors, (642), 8 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:58,342 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-12-16 03:02:58,342 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2021-12-16 03:02:58,342 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2021-12-16 03:02:58,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 03:02:58,345 INFO L732 BasicCegarLoop]: Path program histogram: [8] [2021-12-16 03:02:58,350 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-16 03:02:58,350 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 03:02:58,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 03:02:58 BasicIcfg [2021-12-16 03:02:58,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 03:02:58,372 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 03:02:58,372 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 03:02:58,373 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 03:02:58,373 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:02:55" (3/4) ... [2021-12-16 03:02:58,375 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-16 03:02:58,379 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-12-16 03:02:58,379 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-12-16 03:02:58,383 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-12-16 03:02:58,383 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-16 03:02:58,383 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-16 03:02:58,383 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-16 03:02:58,429 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-16 03:02:58,430 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 03:02:58,431 INFO L158 Benchmark]: Toolchain (without parser) took 3863.68ms. Allocated memory was 92.3MB in the beginning and 199.2MB in the end (delta: 107.0MB). Free memory was 59.1MB in the beginning and 69.3MB in the end (delta: -10.2MB). Peak memory consumption was 96.2MB. Max. memory is 16.1GB. [2021-12-16 03:02:58,431 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 92.3MB. Free memory was 49.1MB in the beginning and 49.1MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 03:02:58,431 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.30ms. Allocated memory was 92.3MB in the beginning and 138.4MB in the end (delta: 46.1MB). Free memory was 58.9MB in the beginning and 112.6MB in the end (delta: -53.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-16 03:02:58,431 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.96ms. Allocated memory is still 138.4MB. Free memory was 112.6MB in the beginning and 111.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 03:02:58,432 INFO L158 Benchmark]: Boogie Preprocessor took 43.79ms. Allocated memory is still 138.4MB. Free memory was 111.0MB in the beginning and 109.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 03:02:58,432 INFO L158 Benchmark]: RCFGBuilder took 352.90ms. Allocated memory is still 138.4MB. Free memory was 109.5MB in the beginning and 92.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-16 03:02:58,432 INFO L158 Benchmark]: TraceAbstraction took 3095.57ms. Allocated memory was 138.4MB in the beginning and 199.2MB in the end (delta: 60.8MB). Free memory was 92.2MB in the beginning and 72.4MB in the end (delta: 19.7MB). Peak memory consumption was 82.1MB. Max. memory is 16.1GB. [2021-12-16 03:02:58,432 INFO L158 Benchmark]: Witness Printer took 57.55ms. Allocated memory is still 199.2MB. Free memory was 72.4MB in the beginning and 69.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 03:02:58,434 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 92.3MB. Free memory was 49.1MB in the beginning and 49.1MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 260.30ms. Allocated memory was 92.3MB in the beginning and 138.4MB in the end (delta: 46.1MB). Free memory was 58.9MB in the beginning and 112.6MB in the end (delta: -53.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.96ms. Allocated memory is still 138.4MB. Free memory was 112.6MB in the beginning and 111.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.79ms. Allocated memory is still 138.4MB. Free memory was 111.0MB in the beginning and 109.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 352.90ms. Allocated memory is still 138.4MB. Free memory was 109.5MB in the beginning and 92.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3095.57ms. Allocated memory was 138.4MB in the beginning and 199.2MB in the end (delta: 60.8MB). Free memory was 92.2MB in the beginning and 72.4MB in the end (delta: 19.7MB). Peak memory consumption was 82.1MB. Max. memory is 16.1GB. * Witness Printer took 57.55ms. Allocated memory is still 199.2MB. Free memory was 72.4MB in the beginning and 69.3MB 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: 130]: 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 5 procedures, 133 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.0s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 236 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 236 mSDsluCounter, 287 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 581 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1008 IncrementalHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 92 mSDtfsCounter, 1008 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=257occurred in iteration=3, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 744 NumberOfCodeBlocks, 744 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 736 ConstructedInterpolants, 0 QuantifiedInterpolants, 2132 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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! [2021-12-16 03:02:58,488 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