./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/test-easy10.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/test-easy10.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:09:05,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:09:05,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:09:05,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:09:05,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:09:05,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:09:05,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:09:05,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:09:05,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:09:05,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:09:05,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:09:05,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:09:05,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:09:05,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:09:05,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:09:05,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:09:05,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:09:05,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:09:05,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:09:05,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:09:05,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:09:05,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:09:05,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:09:05,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:09:05,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:09:05,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:09:05,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:09:05,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:09:05,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:09:05,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:09:05,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:09:05,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:09:05,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:09:05,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:09:05,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:09:05,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:09:05,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:09:05,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:09:05,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:09:05,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:09:05,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:09:05,906 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 03:09:05,934 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:09:05,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:09:05,935 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:09:05,935 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:09:05,936 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:09:05,936 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:09:05,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:09:05,937 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:09:05,937 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:09:05,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:09:05,938 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 03:09:05,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:09:05,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 03:09:05,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:09:05,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:09:05,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:09:05,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:09:05,939 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 03:09:05,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:09:05,939 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:09:05,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:09:05,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:09:05,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:09:05,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:09:05,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:09:05,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:09:05,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:09:05,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:09:05,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:09:05,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:09:05,941 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:09:05,941 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:09:05,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:09:05,942 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b [2021-12-28 03:09:06,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:09:06,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:09:06,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:09:06,205 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:09:06,205 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:09:06,206 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy10.wvr.c [2021-12-28 03:09:06,256 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08f1037c2/76aba811eb89466699b657c765fd33c1/FLAGda0d9166f [2021-12-28 03:09:06,623 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:09:06,624 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c [2021-12-28 03:09:06,628 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08f1037c2/76aba811eb89466699b657c765fd33c1/FLAGda0d9166f [2021-12-28 03:09:06,636 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08f1037c2/76aba811eb89466699b657c765fd33c1 [2021-12-28 03:09:06,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:09:06,639 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:09:06,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:09:06,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:09:06,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:09:06,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:09:06" (1/1) ... [2021-12-28 03:09:06,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30e74cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:09:06, skipping insertion in model container [2021-12-28 03:09:06,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:09:06" (1/1) ... [2021-12-28 03:09:06,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:09:06,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:09:06,822 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c[3907,3920] [2021-12-28 03:09:06,827 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:09:06,859 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:09:06,877 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c[3907,3920] [2021-12-28 03:09:06,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:09:06,893 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:09:06,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:09:06 WrapperNode [2021-12-28 03:09:06,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:09:06,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:09:06,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:09:06,895 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:09:06,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:09:06" (1/1) ... [2021-12-28 03:09:06,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:09:06" (1/1) ... [2021-12-28 03:09:06,939 INFO L137 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 188 [2021-12-28 03:09:06,939 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:09:06,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:09:06,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:09:06,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:09:06,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:09:06" (1/1) ... [2021-12-28 03:09:06,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:09:06" (1/1) ... [2021-12-28 03:09:06,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:09:06" (1/1) ... [2021-12-28 03:09:06,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:09:06" (1/1) ... [2021-12-28 03:09:06,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:09:06" (1/1) ... [2021-12-28 03:09:06,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:09:06" (1/1) ... [2021-12-28 03:09:06,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:09:06" (1/1) ... [2021-12-28 03:09:06,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:09:06,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:09:06,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:09:06,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:09:06,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:09:06" (1/1) ... [2021-12-28 03:09:06,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:09:06,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:09:07,012 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) [2021-12-28 03:09:07,034 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 [2021-12-28 03:09:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:09:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-28 03:09:07,046 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-28 03:09:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-28 03:09:07,046 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-28 03:09:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-28 03:09:07,046 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-28 03:09:07,047 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-12-28 03:09:07,047 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-12-28 03:09:07,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:09:07,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:09:07,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:09:07,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-28 03:09:07,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-28 03:09:07,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:09:07,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:09:07,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:09:07,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:09:07,049 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-28 03:09:07,118 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:09:07,119 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:09:07,343 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:09:07,375 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:09:07,375 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 03:09:07,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:09:07 BoogieIcfgContainer [2021-12-28 03:09:07,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:09:07,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:09:07,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:09:07,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:09:07,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:09:06" (1/3) ... [2021-12-28 03:09:07,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@250dc3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:09:07, skipping insertion in model container [2021-12-28 03:09:07,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:09:06" (2/3) ... [2021-12-28 03:09:07,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@250dc3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:09:07, skipping insertion in model container [2021-12-28 03:09:07,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:09:07" (3/3) ... [2021-12-28 03:09:07,382 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2021-12-28 03:09:07,386 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-28 03:09:07,386 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:09:07,386 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:09:07,386 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-28 03:09:07,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,420 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,420 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,422 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,422 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,422 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,422 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,423 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,423 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,423 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,424 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,424 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,424 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,424 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,425 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,425 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,425 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,426 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,426 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,426 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,426 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,427 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,427 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,429 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,429 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,429 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,429 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,430 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,430 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,430 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,431 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,432 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,432 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,432 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,432 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,433 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:09:07,436 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-12-28 03:09:07,465 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:09:07,470 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 [2021-12-28 03:09:07,470 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-12-28 03:09:07,478 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 138 transitions, 308 flow [2021-12-28 03:09:07,545 INFO L129 PetriNetUnfolder]: 2/134 cut-off events. [2021-12-28 03:09:07,545 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-12-28 03:09:07,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 134 events. 2/134 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2021-12-28 03:09:07,549 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 138 transitions, 308 flow [2021-12-28 03:09:07,555 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 121 transitions, 266 flow [2021-12-28 03:09:07,582 INFO L129 PetriNetUnfolder]: 2/120 cut-off events. [2021-12-28 03:09:07,586 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-12-28 03:09:07,586 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:09:07,587 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:09:07,587 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-28 03:09:07,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:09:07,591 INFO L85 PathProgramCache]: Analyzing trace with hash -936094455, now seen corresponding path program 1 times [2021-12-28 03:09:07,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:09:07,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086195183] [2021-12-28 03:09:07,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:09:07,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:09:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:09:07,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:09:07,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:09:07,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086195183] [2021-12-28 03:09:07,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086195183] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:09:07,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:09:07,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:09:07,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967361521] [2021-12-28 03:09:07,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:09:07,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:09:07,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:09:08,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:09:08,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:09:08,029 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2021-12-28 03:09:08,032 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 121 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:08,032 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:09:08,032 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2021-12-28 03:09:08,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:09:08,136 INFO L129 PetriNetUnfolder]: 58/329 cut-off events. [2021-12-28 03:09:08,136 INFO L130 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2021-12-28 03:09:08,139 INFO L84 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 329 events. 58/329 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1238 event pairs, 13 based on Foata normal form. 10/330 useless extension candidates. Maximal degree in co-relation 376. Up to 100 conditions per place. [2021-12-28 03:09:08,142 INFO L132 encePairwiseOnDemand]: 133/138 looper letters, 16 selfloop transitions, 2 changer transitions 2/123 dead transitions. [2021-12-28 03:09:08,143 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 123 transitions, 312 flow [2021-12-28 03:09:08,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:09:08,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-28 03:09:08,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2021-12-28 03:09:08,157 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.927536231884058 [2021-12-28 03:09:08,158 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2021-12-28 03:09:08,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2021-12-28 03:09:08,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:09:08,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2021-12-28 03:09:08,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:08,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:08,174 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:08,175 INFO L186 Difference]: Start difference. First operand has 132 places, 121 transitions, 266 flow. Second operand 3 states and 384 transitions. [2021-12-28 03:09:08,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 123 transitions, 312 flow [2021-12-28 03:09:08,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 123 transitions, 292 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-12-28 03:09:08,184 INFO L242 Difference]: Finished difference. Result has 127 places, 117 transitions, 250 flow [2021-12-28 03:09:08,186 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=127, PETRI_TRANSITIONS=117} [2021-12-28 03:09:08,190 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, -5 predicate places. [2021-12-28 03:09:08,190 INFO L470 AbstractCegarLoop]: Abstraction has has 127 places, 117 transitions, 250 flow [2021-12-28 03:09:08,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:08,190 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:09:08,190 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:09:08,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:09:08,191 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-28 03:09:08,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:09:08,191 INFO L85 PathProgramCache]: Analyzing trace with hash 767252375, now seen corresponding path program 2 times [2021-12-28 03:09:08,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:09:08,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562407419] [2021-12-28 03:09:08,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:09:08,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:09:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:09:09,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:09:09,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:09:09,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562407419] [2021-12-28 03:09:09,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562407419] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:09:09,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:09:09,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-28 03:09:09,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097129036] [2021-12-28 03:09:09,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:09:09,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-28 03:09:09,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:09:09,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-28 03:09:09,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:09:09,616 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-12-28 03:09:09,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 117 transitions, 250 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:09,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:09:09,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-12-28 03:09:09,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:09:12,414 INFO L129 PetriNetUnfolder]: 7174/14147 cut-off events. [2021-12-28 03:09:12,414 INFO L130 PetriNetUnfolder]: For 1060/1060 co-relation queries the response was YES. [2021-12-28 03:09:12,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25835 conditions, 14147 events. 7174/14147 cut-off events. For 1060/1060 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 124289 event pairs, 973 based on Foata normal form. 1/14098 useless extension candidates. Maximal degree in co-relation 18193. Up to 3730 conditions per place. [2021-12-28 03:09:12,487 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 202 selfloop transitions, 16 changer transitions 13/300 dead transitions. [2021-12-28 03:09:12,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 300 transitions, 1129 flow [2021-12-28 03:09:12,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-28 03:09:12,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-28 03:09:12,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1592 transitions. [2021-12-28 03:09:12,491 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7210144927536232 [2021-12-28 03:09:12,491 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1592 transitions. [2021-12-28 03:09:12,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1592 transitions. [2021-12-28 03:09:12,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:09:12,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1592 transitions. [2021-12-28 03:09:12,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.5) internal successors, (1592), 16 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:12,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:12,499 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:12,499 INFO L186 Difference]: Start difference. First operand has 127 places, 117 transitions, 250 flow. Second operand 16 states and 1592 transitions. [2021-12-28 03:09:12,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 300 transitions, 1129 flow [2021-12-28 03:09:12,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 300 transitions, 1125 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-28 03:09:12,509 INFO L242 Difference]: Finished difference. Result has 152 places, 130 transitions, 369 flow [2021-12-28 03:09:12,509 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=369, PETRI_PLACES=152, PETRI_TRANSITIONS=130} [2021-12-28 03:09:12,510 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 20 predicate places. [2021-12-28 03:09:12,510 INFO L470 AbstractCegarLoop]: Abstraction has has 152 places, 130 transitions, 369 flow [2021-12-28 03:09:12,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:12,511 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:09:12,511 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:09:12,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:09:12,511 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-28 03:09:12,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:09:12,512 INFO L85 PathProgramCache]: Analyzing trace with hash 924146363, now seen corresponding path program 3 times [2021-12-28 03:09:12,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:09:12,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668608159] [2021-12-28 03:09:12,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:09:12,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:09:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:09:12,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:09:12,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:09:12,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668608159] [2021-12-28 03:09:12,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668608159] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:09:12,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:09:12,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:09:12,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200594432] [2021-12-28 03:09:12,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:09:12,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:09:12,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:09:12,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:09:12,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:09:12,601 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2021-12-28 03:09:12,601 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 130 transitions, 369 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:12,602 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:09:12,602 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2021-12-28 03:09:12,602 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:09:12,744 INFO L129 PetriNetUnfolder]: 283/1649 cut-off events. [2021-12-28 03:09:12,745 INFO L130 PetriNetUnfolder]: For 382/390 co-relation queries the response was YES. [2021-12-28 03:09:12,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2930 conditions, 1649 events. 283/1649 cut-off events. For 382/390 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 14043 event pairs, 199 based on Foata normal form. 17/1556 useless extension candidates. Maximal degree in co-relation 2884. Up to 461 conditions per place. [2021-12-28 03:09:12,755 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 17 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2021-12-28 03:09:12,755 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 134 transitions, 414 flow [2021-12-28 03:09:12,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:09:12,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-28 03:09:12,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2021-12-28 03:09:12,757 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9251207729468599 [2021-12-28 03:09:12,757 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2021-12-28 03:09:12,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2021-12-28 03:09:12,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:09:12,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2021-12-28 03:09:12,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:12,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:12,762 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:12,763 INFO L186 Difference]: Start difference. First operand has 152 places, 130 transitions, 369 flow. Second operand 3 states and 383 transitions. [2021-12-28 03:09:12,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 134 transitions, 414 flow [2021-12-28 03:09:12,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 134 transitions, 401 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-12-28 03:09:12,774 INFO L242 Difference]: Finished difference. Result has 146 places, 129 transitions, 358 flow [2021-12-28 03:09:12,775 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=146, PETRI_TRANSITIONS=129} [2021-12-28 03:09:12,776 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 14 predicate places. [2021-12-28 03:09:12,777 INFO L470 AbstractCegarLoop]: Abstraction has has 146 places, 129 transitions, 358 flow [2021-12-28 03:09:12,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:12,781 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:09:12,782 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:09:12,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:09:12,782 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-28 03:09:12,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:09:12,783 INFO L85 PathProgramCache]: Analyzing trace with hash 770515071, now seen corresponding path program 4 times [2021-12-28 03:09:12,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:09:12,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384961446] [2021-12-28 03:09:12,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:09:12,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:09:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:09:13,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:09:13,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:09:13,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384961446] [2021-12-28 03:09:13,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384961446] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:09:13,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:09:13,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-28 03:09:13,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886308581] [2021-12-28 03:09:13,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:09:13,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-28 03:09:13,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:09:13,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-28 03:09:13,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:09:13,726 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-12-28 03:09:13,727 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 129 transitions, 358 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:13,727 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:09:13,727 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-12-28 03:09:13,727 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:09:17,371 INFO L129 PetriNetUnfolder]: 11554/25502 cut-off events. [2021-12-28 03:09:17,372 INFO L130 PetriNetUnfolder]: For 16969/16969 co-relation queries the response was YES. [2021-12-28 03:09:17,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60082 conditions, 25502 events. 11554/25502 cut-off events. For 16969/16969 co-relation queries the response was YES. Maximal size of possible extension queue 1357. Compared 270963 event pairs, 2799 based on Foata normal form. 1/25279 useless extension candidates. Maximal degree in co-relation 48006. Up to 6826 conditions per place. [2021-12-28 03:09:17,524 INFO L132 encePairwiseOnDemand]: 119/138 looper letters, 233 selfloop transitions, 30 changer transitions 13/345 dead transitions. [2021-12-28 03:09:17,524 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 345 transitions, 1724 flow [2021-12-28 03:09:17,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-28 03:09:17,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-28 03:09:17,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1588 transitions. [2021-12-28 03:09:17,529 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7192028985507246 [2021-12-28 03:09:17,529 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1588 transitions. [2021-12-28 03:09:17,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1588 transitions. [2021-12-28 03:09:17,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:09:17,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1588 transitions. [2021-12-28 03:09:17,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.25) internal successors, (1588), 16 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:17,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:17,537 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:17,538 INFO L186 Difference]: Start difference. First operand has 146 places, 129 transitions, 358 flow. Second operand 16 states and 1588 transitions. [2021-12-28 03:09:17,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 345 transitions, 1724 flow [2021-12-28 03:09:17,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 345 transitions, 1720 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-28 03:09:17,735 INFO L242 Difference]: Finished difference. Result has 173 places, 153 transitions, 654 flow [2021-12-28 03:09:17,735 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=654, PETRI_PLACES=173, PETRI_TRANSITIONS=153} [2021-12-28 03:09:17,736 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 41 predicate places. [2021-12-28 03:09:17,736 INFO L470 AbstractCegarLoop]: Abstraction has has 173 places, 153 transitions, 654 flow [2021-12-28 03:09:17,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:17,737 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:09:17,737 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:09:17,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:09:17,738 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-28 03:09:17,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:09:17,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1917193115, now seen corresponding path program 5 times [2021-12-28 03:09:17,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:09:17,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711679602] [2021-12-28 03:09:17,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:09:17,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:09:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:09:17,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:09:17,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:09:17,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711679602] [2021-12-28 03:09:17,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711679602] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:09:17,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:09:17,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:09:17,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612341265] [2021-12-28 03:09:17,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:09:17,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:09:17,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:09:17,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:09:17,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:09:17,827 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2021-12-28 03:09:17,827 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 153 transitions, 654 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:17,827 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:09:17,828 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2021-12-28 03:09:17,828 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:09:18,269 INFO L129 PetriNetUnfolder]: 799/4372 cut-off events. [2021-12-28 03:09:18,270 INFO L130 PetriNetUnfolder]: For 4154/4255 co-relation queries the response was YES. [2021-12-28 03:09:18,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9688 conditions, 4372 events. 799/4372 cut-off events. For 4154/4255 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 48895 event pairs, 244 based on Foata normal form. 107/4262 useless extension candidates. Maximal degree in co-relation 9507. Up to 1240 conditions per place. [2021-12-28 03:09:18,296 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 16 selfloop transitions, 2 changer transitions 0/157 dead transitions. [2021-12-28 03:09:18,299 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 157 transitions, 704 flow [2021-12-28 03:09:18,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:09:18,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-28 03:09:18,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2021-12-28 03:09:18,300 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9227053140096618 [2021-12-28 03:09:18,301 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2021-12-28 03:09:18,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2021-12-28 03:09:18,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:09:18,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2021-12-28 03:09:18,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:18,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:18,303 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:18,303 INFO L186 Difference]: Start difference. First operand has 173 places, 153 transitions, 654 flow. Second operand 3 states and 382 transitions. [2021-12-28 03:09:18,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 157 transitions, 704 flow [2021-12-28 03:09:18,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 157 transitions, 688 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-12-28 03:09:18,336 INFO L242 Difference]: Finished difference. Result has 167 places, 153 transitions, 646 flow [2021-12-28 03:09:18,336 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=646, PETRI_PLACES=167, PETRI_TRANSITIONS=153} [2021-12-28 03:09:18,338 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 35 predicate places. [2021-12-28 03:09:18,338 INFO L470 AbstractCegarLoop]: Abstraction has has 167 places, 153 transitions, 646 flow [2021-12-28 03:09:18,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:18,339 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:09:18,339 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:09:18,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 03:09:18,339 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-28 03:09:18,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:09:18,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1090793799, now seen corresponding path program 6 times [2021-12-28 03:09:18,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:09:18,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760981442] [2021-12-28 03:09:18,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:09:18,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:09:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:09:19,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:09:19,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:09:19,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760981442] [2021-12-28 03:09:19,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760981442] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:09:19,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:09:19,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-28 03:09:19,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885616289] [2021-12-28 03:09:19,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:09:19,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-28 03:09:19,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:09:19,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-28 03:09:19,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:09:19,180 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-12-28 03:09:19,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 153 transitions, 646 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:19,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:09:19,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-12-28 03:09:19,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:09:23,556 INFO L129 PetriNetUnfolder]: 12674/31422 cut-off events. [2021-12-28 03:09:23,557 INFO L130 PetriNetUnfolder]: For 57738/57738 co-relation queries the response was YES. [2021-12-28 03:09:23,696 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88458 conditions, 31422 events. 12674/31422 cut-off events. For 57738/57738 co-relation queries the response was YES. Maximal size of possible extension queue 1904. Compared 367661 event pairs, 4382 based on Foata normal form. 1/31183 useless extension candidates. Maximal degree in co-relation 64247. Up to 6339 conditions per place. [2021-12-28 03:09:23,797 INFO L132 encePairwiseOnDemand]: 121/138 looper letters, 251 selfloop transitions, 52 changer transitions 13/385 dead transitions. [2021-12-28 03:09:23,797 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 385 transitions, 2624 flow [2021-12-28 03:09:23,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-28 03:09:23,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-28 03:09:23,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1574 transitions. [2021-12-28 03:09:23,801 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7128623188405797 [2021-12-28 03:09:23,801 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1574 transitions. [2021-12-28 03:09:23,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1574 transitions. [2021-12-28 03:09:23,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:09:23,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1574 transitions. [2021-12-28 03:09:23,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 98.375) internal successors, (1574), 16 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:23,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:23,809 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:23,809 INFO L186 Difference]: Start difference. First operand has 167 places, 153 transitions, 646 flow. Second operand 16 states and 1574 transitions. [2021-12-28 03:09:23,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 385 transitions, 2624 flow [2021-12-28 03:09:24,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 385 transitions, 2620 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-28 03:09:24,441 INFO L242 Difference]: Finished difference. Result has 195 places, 198 transitions, 1322 flow [2021-12-28 03:09:24,441 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1322, PETRI_PLACES=195, PETRI_TRANSITIONS=198} [2021-12-28 03:09:24,442 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 63 predicate places. [2021-12-28 03:09:24,442 INFO L470 AbstractCegarLoop]: Abstraction has has 195 places, 198 transitions, 1322 flow [2021-12-28 03:09:24,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:24,442 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:09:24,443 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:09:24,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 03:09:24,443 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-28 03:09:24,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:09:24,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1317266137, now seen corresponding path program 7 times [2021-12-28 03:09:24,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:09:24,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058411641] [2021-12-28 03:09:24,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:09:24,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:09:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:09:25,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:09:25,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:09:25,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058411641] [2021-12-28 03:09:25,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058411641] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:09:25,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:09:25,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-28 03:09:25,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789448164] [2021-12-28 03:09:25,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:09:25,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-28 03:09:25,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:09:25,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-28 03:09:25,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:09:25,201 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-12-28 03:09:25,202 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 198 transitions, 1322 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:25,202 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:09:25,202 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-12-28 03:09:25,202 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:09:33,241 INFO L129 PetriNetUnfolder]: 22659/59467 cut-off events. [2021-12-28 03:09:33,241 INFO L130 PetriNetUnfolder]: For 220057/220079 co-relation queries the response was YES. [2021-12-28 03:09:33,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193145 conditions, 59467 events. 22659/59467 cut-off events. For 220057/220079 co-relation queries the response was YES. Maximal size of possible extension queue 3796. Compared 795204 event pairs, 7423 based on Foata normal form. 5/58566 useless extension candidates. Maximal degree in co-relation 191830. Up to 11532 conditions per place. [2021-12-28 03:09:34,015 INFO L132 encePairwiseOnDemand]: 120/138 looper letters, 379 selfloop transitions, 60 changer transitions 8/516 dead transitions. [2021-12-28 03:09:34,015 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 516 transitions, 4816 flow [2021-12-28 03:09:34,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-28 03:09:34,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-28 03:09:34,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1599 transitions. [2021-12-28 03:09:34,021 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7241847826086957 [2021-12-28 03:09:34,021 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1599 transitions. [2021-12-28 03:09:34,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1599 transitions. [2021-12-28 03:09:34,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:09:34,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1599 transitions. [2021-12-28 03:09:34,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.9375) internal successors, (1599), 16 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:34,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:34,027 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:34,027 INFO L186 Difference]: Start difference. First operand has 195 places, 198 transitions, 1322 flow. Second operand 16 states and 1599 transitions. [2021-12-28 03:09:34,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 516 transitions, 4816 flow [2021-12-28 03:09:38,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 516 transitions, 4708 flow, removed 54 selfloop flow, removed 4 redundant places. [2021-12-28 03:09:38,575 INFO L242 Difference]: Finished difference. Result has 216 places, 240 transitions, 2097 flow [2021-12-28 03:09:38,575 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1296, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2097, PETRI_PLACES=216, PETRI_TRANSITIONS=240} [2021-12-28 03:09:38,576 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 84 predicate places. [2021-12-28 03:09:38,576 INFO L470 AbstractCegarLoop]: Abstraction has has 216 places, 240 transitions, 2097 flow [2021-12-28 03:09:38,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:38,576 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:09:38,577 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:09:38,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 03:09:38,577 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-28 03:09:38,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:09:38,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1815647873, now seen corresponding path program 8 times [2021-12-28 03:09:38,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:09:38,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437914803] [2021-12-28 03:09:38,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:09:38,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:09:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:09:38,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:09:38,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:09:38,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437914803] [2021-12-28 03:09:38,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437914803] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:09:38,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:09:38,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:09:38,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623838150] [2021-12-28 03:09:38,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:09:38,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:09:38,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:09:38,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:09:38,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:09:38,636 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2021-12-28 03:09:38,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 240 transitions, 2097 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:38,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:09:38,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2021-12-28 03:09:38,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:09:40,594 INFO L129 PetriNetUnfolder]: 2447/16994 cut-off events. [2021-12-28 03:09:40,594 INFO L130 PetriNetUnfolder]: For 58216/59990 co-relation queries the response was YES. [2021-12-28 03:09:40,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46613 conditions, 16994 events. 2447/16994 cut-off events. For 58216/59990 co-relation queries the response was YES. Maximal size of possible extension queue 1184. Compared 256301 event pairs, 735 based on Foata normal form. 408/16665 useless extension candidates. Maximal degree in co-relation 45542. Up to 4358 conditions per place. [2021-12-28 03:09:40,694 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 17 selfloop transitions, 2 changer transitions 0/233 dead transitions. [2021-12-28 03:09:40,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 233 transitions, 1996 flow [2021-12-28 03:09:40,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:09:40,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-28 03:09:40,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2021-12-28 03:09:40,696 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9251207729468599 [2021-12-28 03:09:40,696 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2021-12-28 03:09:40,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2021-12-28 03:09:40,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:09:40,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2021-12-28 03:09:40,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:40,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:40,698 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:40,698 INFO L186 Difference]: Start difference. First operand has 216 places, 240 transitions, 2097 flow. Second operand 3 states and 383 transitions. [2021-12-28 03:09:40,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 233 transitions, 1996 flow [2021-12-28 03:09:41,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 233 transitions, 1875 flow, removed 51 selfloop flow, removed 6 redundant places. [2021-12-28 03:09:41,668 INFO L242 Difference]: Finished difference. Result has 210 places, 228 transitions, 1828 flow [2021-12-28 03:09:41,668 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1828, PETRI_PLACES=210, PETRI_TRANSITIONS=228} [2021-12-28 03:09:41,668 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 78 predicate places. [2021-12-28 03:09:41,669 INFO L470 AbstractCegarLoop]: Abstraction has has 210 places, 228 transitions, 1828 flow [2021-12-28 03:09:41,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:41,669 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:09:41,669 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:09:41,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 03:09:41,669 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-28 03:09:41,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:09:41,670 INFO L85 PathProgramCache]: Analyzing trace with hash -451167609, now seen corresponding path program 9 times [2021-12-28 03:09:41,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:09:41,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39425917] [2021-12-28 03:09:41,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:09:41,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:09:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:09:42,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:09:42,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:09:42,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39425917] [2021-12-28 03:09:42,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39425917] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:09:42,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:09:42,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-28 03:09:42,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800004662] [2021-12-28 03:09:42,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:09:42,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-28 03:09:42,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:09:42,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-28 03:09:42,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:09:42,445 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-12-28 03:09:42,446 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 228 transitions, 1828 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:42,446 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:09:42,446 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-12-28 03:09:42,446 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:09:52,712 INFO L129 PetriNetUnfolder]: 25946/71278 cut-off events. [2021-12-28 03:09:52,712 INFO L130 PetriNetUnfolder]: For 329115/329115 co-relation queries the response was YES. [2021-12-28 03:09:53,412 INFO L84 FinitePrefix]: Finished finitePrefix Result has 247096 conditions, 71278 events. 25946/71278 cut-off events. For 329115/329115 co-relation queries the response was YES. Maximal size of possible extension queue 4924. Compared 1002546 event pairs, 8578 based on Foata normal form. 1/70461 useless extension candidates. Maximal degree in co-relation 228804. Up to 14224 conditions per place. [2021-12-28 03:09:53,641 INFO L132 encePairwiseOnDemand]: 121/138 looper letters, 332 selfloop transitions, 93 changer transitions 12/506 dead transitions. [2021-12-28 03:09:53,642 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 506 transitions, 5319 flow [2021-12-28 03:09:53,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-28 03:09:53,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-28 03:09:53,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1562 transitions. [2021-12-28 03:09:53,645 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.707427536231884 [2021-12-28 03:09:53,645 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1562 transitions. [2021-12-28 03:09:53,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1562 transitions. [2021-12-28 03:09:53,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:09:53,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1562 transitions. [2021-12-28 03:09:53,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 97.625) internal successors, (1562), 16 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:53,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:53,651 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:53,651 INFO L186 Difference]: Start difference. First operand has 210 places, 228 transitions, 1828 flow. Second operand 16 states and 1562 transitions. [2021-12-28 03:09:53,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 506 transitions, 5319 flow [2021-12-28 03:09:59,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 506 transitions, 5315 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-28 03:09:59,138 INFO L242 Difference]: Finished difference. Result has 237 places, 284 transitions, 3029 flow [2021-12-28 03:09:59,138 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1824, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3029, PETRI_PLACES=237, PETRI_TRANSITIONS=284} [2021-12-28 03:09:59,139 INFO L334 CegarLoopForPetriNet]: 132 programPoint places, 105 predicate places. [2021-12-28 03:09:59,139 INFO L470 AbstractCegarLoop]: Abstraction has has 237 places, 284 transitions, 3029 flow [2021-12-28 03:09:59,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:59,140 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:09:59,140 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:09:59,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 03:09:59,140 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-28 03:09:59,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:09:59,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1989242891, now seen corresponding path program 10 times [2021-12-28 03:09:59,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:09:59,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253234565] [2021-12-28 03:09:59,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:09:59,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:09:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:09:59,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:09:59,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:09:59,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253234565] [2021-12-28 03:09:59,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253234565] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:09:59,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:09:59,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-28 03:09:59,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807761182] [2021-12-28 03:09:59,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:09:59,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-28 03:09:59,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:09:59,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-28 03:09:59,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:09:59,828 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2021-12-28 03:09:59,828 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 284 transitions, 3029 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:09:59,828 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:09:59,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2021-12-28 03:09:59,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand