./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe026_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2965c7b7-bb9d-4722-b51d-3e0dc8c6d78f/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2965c7b7-bb9d-4722-b51d-3e0dc8c6d78f/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2965c7b7-bb9d-4722-b51d-3e0dc8c6d78f/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2965c7b7-bb9d-4722-b51d-3e0dc8c6d78f/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe026_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2965c7b7-bb9d-4722-b51d-3e0dc8c6d78f/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2965c7b7-bb9d-4722-b51d-3e0dc8c6d78f/bin/uautomizer-GMMbpWq8iD --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 80799f6c8fd7356eb24d2cdce2b9813d505d1c320a66d664e71d3261c3c21a3d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:44:41,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:44:41,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:44:41,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:44:41,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:44:41,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:44:41,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:44:41,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:44:41,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:44:41,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:44:41,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:44:41,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:44:41,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:44:41,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:44:41,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:44:41,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:44:41,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:44:41,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:44:41,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:44:41,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:44:41,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:44:41,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:44:41,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:44:41,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:44:41,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:44:41,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:44:41,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:44:41,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:44:41,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:44:41,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:44:41,922 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:44:41,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:44:41,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:44:41,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:44:41,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:44:41,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:44:41,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:44:41,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:44:41,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:44:41,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:44:41,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:44:41,935 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2965c7b7-bb9d-4722-b51d-3e0dc8c6d78f/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:44:41,977 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:44:41,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:44:41,979 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:44:41,979 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:44:41,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:44:41,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:44:41,982 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:44:41,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:44:41,983 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:44:41,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:44:41,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:44:41,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:44:41,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:44:41,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:44:41,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:44:41,985 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:44:41,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:44:41,986 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:44:41,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:44:41,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:44:41,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:44:41,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:44:41,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:44:41,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:44:41,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:44:41,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:44:41,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:44:41,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:44:41,989 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:44:41,989 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:44:41,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:44:41,990 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:44:41,990 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2965c7b7-bb9d-4722-b51d-3e0dc8c6d78f/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2965c7b7-bb9d-4722-b51d-3e0dc8c6d78f/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80799f6c8fd7356eb24d2cdce2b9813d505d1c320a66d664e71d3261c3c21a3d [2021-10-28 23:44:42,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:44:42,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:44:42,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:44:42,374 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:44:42,374 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:44:42,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2965c7b7-bb9d-4722-b51d-3e0dc8c6d78f/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/pthread-wmm/safe026_tso.i [2021-10-28 23:44:42,448 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2965c7b7-bb9d-4722-b51d-3e0dc8c6d78f/bin/uautomizer-GMMbpWq8iD/data/9e871003f/f156d171253d4f36aef73e4fb0f5b8fb/FLAGb401fd6ae [2021-10-28 23:44:43,124 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:44:43,124 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2965c7b7-bb9d-4722-b51d-3e0dc8c6d78f/sv-benchmarks/c/pthread-wmm/safe026_tso.i [2021-10-28 23:44:43,151 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2965c7b7-bb9d-4722-b51d-3e0dc8c6d78f/bin/uautomizer-GMMbpWq8iD/data/9e871003f/f156d171253d4f36aef73e4fb0f5b8fb/FLAGb401fd6ae [2021-10-28 23:44:43,373 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2965c7b7-bb9d-4722-b51d-3e0dc8c6d78f/bin/uautomizer-GMMbpWq8iD/data/9e871003f/f156d171253d4f36aef73e4fb0f5b8fb [2021-10-28 23:44:43,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:44:43,378 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:44:43,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:44:43,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:44:43,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:44:43,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:44:43" (1/1) ... [2021-10-28 23:44:43,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16ca9ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:43, skipping insertion in model container [2021-10-28 23:44:43,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:44:43" (1/1) ... [2021-10-28 23:44:43,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:44:43,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:44:43,638 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2965c7b7-bb9d-4722-b51d-3e0dc8c6d78f/sv-benchmarks/c/pthread-wmm/safe026_tso.i[945,958] [2021-10-28 23:44:43,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:44:43,816 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:44:43,828 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2965c7b7-bb9d-4722-b51d-3e0dc8c6d78f/sv-benchmarks/c/pthread-wmm/safe026_tso.i[945,958] [2021-10-28 23:44:43,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:44:43,894 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:44:43,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:43 WrapperNode [2021-10-28 23:44:43,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:44:43,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:44:43,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:44:43,897 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:44:43,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:43" (1/1) ... [2021-10-28 23:44:43,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:43" (1/1) ... [2021-10-28 23:44:43,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:44:43,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:44:43,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:44:43,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:44:43,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:43" (1/1) ... [2021-10-28 23:44:43,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:43" (1/1) ... [2021-10-28 23:44:43,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:43" (1/1) ... [2021-10-28 23:44:43,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:43" (1/1) ... [2021-10-28 23:44:43,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:43" (1/1) ... [2021-10-28 23:44:43,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:43" (1/1) ... [2021-10-28 23:44:43,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:43" (1/1) ... [2021-10-28 23:44:44,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:44:44,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:44:44,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:44:44,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:44:44,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:43" (1/1) ... [2021-10-28 23:44:44,018 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:44:44,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2965c7b7-bb9d-4722-b51d-3e0dc8c6d78f/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:44:44,046 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2965c7b7-bb9d-4722-b51d-3e0dc8c6d78f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:44:44,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2965c7b7-bb9d-4722-b51d-3e0dc8c6d78f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:44:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:44:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 23:44:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:44:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:44:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-28 23:44:44,106 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-28 23:44:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-28 23:44:44,106 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-28 23:44:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-28 23:44:44,106 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-28 23:44:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:44:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 23:44:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:44:44,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:44:44,109 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 23:44:44,477 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:44:44,481 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-28 23:44:44,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:44:44 BoogieIcfgContainer [2021-10-28 23:44:44,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:44:44,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:44:44,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:44:44,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:44:44,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:44:43" (1/3) ... [2021-10-28 23:44:44,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bf4cc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:44:44, skipping insertion in model container [2021-10-28 23:44:44,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:43" (2/3) ... [2021-10-28 23:44:44,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bf4cc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:44:44, skipping insertion in model container [2021-10-28 23:44:44,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:44:44" (3/3) ... [2021-10-28 23:44:44,495 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.i [2021-10-28 23:44:44,502 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 23:44:44,502 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:44:44,502 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:44:44,503 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 23:44:44,551 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,552 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,552 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,552 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,554 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,555 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,555 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,555 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,555 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,556 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,556 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,556 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,557 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,558 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,558 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,558 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,558 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,559 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,560 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,560 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,562 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,562 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,563 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,563 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,564 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,564 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,565 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,565 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,566 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,566 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,566 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,566 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,572 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,572 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,572 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,573 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,576 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,577 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,577 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,577 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,585 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,586 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,586 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,587 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,591 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,592 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,592 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,594 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:44:44,600 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-28 23:44:44,663 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:44:44,672 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 [2021-10-28 23:44:44,673 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-28 23:44:44,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 82 transitions, 179 flow [2021-10-28 23:44:44,809 INFO L129 PetriNetUnfolder]: 2/79 cut-off events. [2021-10-28 23:44:44,810 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 23:44:44,817 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 79 events. 2/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-10-28 23:44:44,817 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 82 transitions, 179 flow [2021-10-28 23:44:44,823 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 67 transitions, 143 flow [2021-10-28 23:44:44,871 INFO L129 PetriNetUnfolder]: 1/66 cut-off events. [2021-10-28 23:44:44,871 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 23:44:44,872 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:44:44,873 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] [2021-10-28 23:44:44,873 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 23:44:44,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:44,880 INFO L85 PathProgramCache]: Analyzing trace with hash 895196563, now seen corresponding path program 1 times [2021-10-28 23:44:44,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:44,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586840291] [2021-10-28 23:44:44,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:44,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:45,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:45,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:45,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586840291] [2021-10-28 23:44:45,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586840291] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:44:45,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:44:45,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:44:45,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956321277] [2021-10-28 23:44:45,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:44:45,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:45,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:44:45,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:44:45,505 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 82 [2021-10-28 23:44:45,510 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 143 flow. Second operand has 7 states, 7 states have (on average 66.28571428571429) internal successors, (464), 7 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:45,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:44:45,511 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 82 [2021-10-28 23:44:45,512 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:44:45,819 INFO L129 PetriNetUnfolder]: 173/508 cut-off events. [2021-10-28 23:44:45,819 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 23:44:45,823 INFO L84 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 508 events. 173/508 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2854 event pairs, 21 based on Foata normal form. 21/513 useless extension candidates. Maximal degree in co-relation 803. Up to 117 conditions per place. [2021-10-28 23:44:45,836 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 16 selfloop transitions, 5 changer transitions 35/109 dead transitions. [2021-10-28 23:44:45,836 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 109 transitions, 339 flow [2021-10-28 23:44:45,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:44:45,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 23:44:45,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 907 transitions. [2021-10-28 23:44:45,855 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.850844277673546 [2021-10-28 23:44:45,856 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 907 transitions. [2021-10-28 23:44:45,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 907 transitions. [2021-10-28 23:44:45,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:44:45,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 907 transitions. [2021-10-28 23:44:45,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.76923076923077) internal successors, (907), 13 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:45,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:45,880 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:45,883 INFO L186 Difference]: Start difference. First operand has 76 places, 67 transitions, 143 flow. Second operand 13 states and 907 transitions. [2021-10-28 23:44:45,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 109 transitions, 339 flow [2021-10-28 23:44:45,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 109 transitions, 336 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-28 23:44:45,892 INFO L242 Difference]: Finished difference. Result has 97 places, 69 transitions, 210 flow [2021-10-28 23:44:45,894 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=210, PETRI_PLACES=97, PETRI_TRANSITIONS=69} [2021-10-28 23:44:45,895 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 21 predicate places. [2021-10-28 23:44:45,896 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 69 transitions, 210 flow [2021-10-28 23:44:45,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.28571428571429) internal successors, (464), 7 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:45,897 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:44:45,897 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] [2021-10-28 23:44:45,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:44:45,897 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 23:44:45,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:45,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1942883596, now seen corresponding path program 1 times [2021-10-28 23:44:45,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:45,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734858867] [2021-10-28 23:44:45,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:45,899 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:46,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:46,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:46,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734858867] [2021-10-28 23:44:46,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734858867] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:44:46,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:44:46,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:44:46,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878891026] [2021-10-28 23:44:46,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:44:46,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:46,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:44:46,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:44:46,102 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 82 [2021-10-28 23:44:46,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 69 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 66.42857142857143) internal successors, (465), 7 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:46,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:44:46,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 82 [2021-10-28 23:44:46,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:44:46,413 INFO L129 PetriNetUnfolder]: 94/373 cut-off events. [2021-10-28 23:44:46,413 INFO L130 PetriNetUnfolder]: For 741/873 co-relation queries the response was YES. [2021-10-28 23:44:46,418 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1111 conditions, 373 events. 94/373 cut-off events. For 741/873 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1989 event pairs, 10 based on Foata normal form. 12/377 useless extension candidates. Maximal degree in co-relation 1068. Up to 93 conditions per place. [2021-10-28 23:44:46,421 INFO L132 encePairwiseOnDemand]: 71/82 looper letters, 15 selfloop transitions, 12 changer transitions 34/114 dead transitions. [2021-10-28 23:44:46,421 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 114 transitions, 668 flow [2021-10-28 23:44:46,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:44:46,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 23:44:46,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 906 transitions. [2021-10-28 23:44:46,426 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.849906191369606 [2021-10-28 23:44:46,426 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 906 transitions. [2021-10-28 23:44:46,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 906 transitions. [2021-10-28 23:44:46,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:44:46,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 906 transitions. [2021-10-28 23:44:46,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.6923076923077) internal successors, (906), 13 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:46,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:46,436 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:46,436 INFO L186 Difference]: Start difference. First operand has 97 places, 69 transitions, 210 flow. Second operand 13 states and 906 transitions. [2021-10-28 23:44:46,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 114 transitions, 668 flow [2021-10-28 23:44:46,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 114 transitions, 616 flow, removed 24 selfloop flow, removed 4 redundant places. [2021-10-28 23:44:46,454 INFO L242 Difference]: Finished difference. Result has 107 places, 74 transitions, 299 flow [2021-10-28 23:44:46,455 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=299, PETRI_PLACES=107, PETRI_TRANSITIONS=74} [2021-10-28 23:44:46,456 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 31 predicate places. [2021-10-28 23:44:46,456 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 74 transitions, 299 flow [2021-10-28 23:44:46,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.42857142857143) internal successors, (465), 7 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:46,460 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:44:46,461 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] [2021-10-28 23:44:46,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:44:46,461 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 23:44:46,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:46,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1723974385, now seen corresponding path program 1 times [2021-10-28 23:44:46,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:46,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674536304] [2021-10-28 23:44:46,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:46,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:46,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:46,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:46,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:46,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674536304] [2021-10-28 23:44:46,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674536304] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:44:46,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:44:46,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:44:46,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035362944] [2021-10-28 23:44:46,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:44:46,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:46,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:44:46,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:44:46,692 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 82 [2021-10-28 23:44:46,693 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 74 transitions, 299 flow. Second operand has 7 states, 7 states have (on average 68.42857142857143) internal successors, (479), 7 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:46,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:44:46,693 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 82 [2021-10-28 23:44:46,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:44:46,856 INFO L129 PetriNetUnfolder]: 56/283 cut-off events. [2021-10-28 23:44:46,857 INFO L130 PetriNetUnfolder]: For 1029/1310 co-relation queries the response was YES. [2021-10-28 23:44:46,859 INFO L84 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 283 events. 56/283 cut-off events. For 1029/1310 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1463 event pairs, 24 based on Foata normal form. 11/284 useless extension candidates. Maximal degree in co-relation 904. Up to 67 conditions per place. [2021-10-28 23:44:46,861 INFO L132 encePairwiseOnDemand]: 73/82 looper letters, 10 selfloop transitions, 6 changer transitions 15/87 dead transitions. [2021-10-28 23:44:46,861 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 87 transitions, 482 flow [2021-10-28 23:44:46,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:44:46,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 23:44:46,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 496 transitions. [2021-10-28 23:44:46,864 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8641114982578397 [2021-10-28 23:44:46,864 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 496 transitions. [2021-10-28 23:44:46,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 496 transitions. [2021-10-28 23:44:46,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:44:46,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 496 transitions. [2021-10-28 23:44:46,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 70.85714285714286) internal successors, (496), 7 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:46,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:46,869 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:46,869 INFO L186 Difference]: Start difference. First operand has 107 places, 74 transitions, 299 flow. Second operand 7 states and 496 transitions. [2021-10-28 23:44:46,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 87 transitions, 482 flow [2021-10-28 23:44:46,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 87 transitions, 440 flow, removed 21 selfloop flow, removed 12 redundant places. [2021-10-28 23:44:46,877 INFO L242 Difference]: Finished difference. Result has 96 places, 72 transitions, 276 flow [2021-10-28 23:44:46,877 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=276, PETRI_PLACES=96, PETRI_TRANSITIONS=72} [2021-10-28 23:44:46,878 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 20 predicate places. [2021-10-28 23:44:46,878 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 72 transitions, 276 flow [2021-10-28 23:44:46,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.42857142857143) internal successors, (479), 7 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:46,878 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:44:46,879 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] [2021-10-28 23:44:46,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:44:46,879 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 23:44:46,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:46,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1609269557, now seen corresponding path program 2 times [2021-10-28 23:44:46,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:46,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166038942] [2021-10-28 23:44:46,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:46,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:46,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:46,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166038942] [2021-10-28 23:44:47,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166038942] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:44:47,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:44:47,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:44:47,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625937368] [2021-10-28 23:44:47,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:44:47,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:47,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:44:47,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:44:47,004 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-10-28 23:44:47,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 72 transitions, 276 flow. Second operand has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:47,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:44:47,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-10-28 23:44:47,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:44:47,234 INFO L129 PetriNetUnfolder]: 350/864 cut-off events. [2021-10-28 23:44:47,234 INFO L130 PetriNetUnfolder]: For 573/595 co-relation queries the response was YES. [2021-10-28 23:44:47,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1883 conditions, 864 events. 350/864 cut-off events. For 573/595 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6045 event pairs, 24 based on Foata normal form. 0/775 useless extension candidates. Maximal degree in co-relation 1834. Up to 232 conditions per place. [2021-10-28 23:44:47,249 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 24 selfloop transitions, 17 changer transitions 0/102 dead transitions. [2021-10-28 23:44:47,249 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 102 transitions, 418 flow [2021-10-28 23:44:47,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:44:47,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 23:44:47,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 723 transitions. [2021-10-28 23:44:47,253 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8817073170731707 [2021-10-28 23:44:47,253 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 723 transitions. [2021-10-28 23:44:47,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 723 transitions. [2021-10-28 23:44:47,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:44:47,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 723 transitions. [2021-10-28 23:44:47,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.3) internal successors, (723), 10 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:47,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:47,259 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:47,259 INFO L186 Difference]: Start difference. First operand has 96 places, 72 transitions, 276 flow. Second operand 10 states and 723 transitions. [2021-10-28 23:44:47,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 102 transitions, 418 flow [2021-10-28 23:44:47,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 102 transitions, 383 flow, removed 10 selfloop flow, removed 7 redundant places. [2021-10-28 23:44:47,268 INFO L242 Difference]: Finished difference. Result has 101 places, 87 transitions, 361 flow [2021-10-28 23:44:47,269 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=361, PETRI_PLACES=101, PETRI_TRANSITIONS=87} [2021-10-28 23:44:47,269 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 25 predicate places. [2021-10-28 23:44:47,269 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 87 transitions, 361 flow [2021-10-28 23:44:47,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:47,270 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:44:47,270 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] [2021-10-28 23:44:47,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:44:47,271 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 23:44:47,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:47,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1503586747, now seen corresponding path program 1 times [2021-10-28 23:44:47,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:47,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493175511] [2021-10-28 23:44:47,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:47,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:47,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:47,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:47,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493175511] [2021-10-28 23:44:47,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493175511] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:44:47,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:44:47,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:44:47,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791030368] [2021-10-28 23:44:47,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:44:47,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:47,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:44:47,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:44:47,467 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-10-28 23:44:47,468 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 87 transitions, 361 flow. Second operand has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:47,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:44:47,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-10-28 23:44:47,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:44:47,762 INFO L129 PetriNetUnfolder]: 316/820 cut-off events. [2021-10-28 23:44:47,763 INFO L130 PetriNetUnfolder]: For 2007/2450 co-relation queries the response was YES. [2021-10-28 23:44:47,769 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2867 conditions, 820 events. 316/820 cut-off events. For 2007/2450 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 5920 event pairs, 4 based on Foata normal form. 87/846 useless extension candidates. Maximal degree in co-relation 2817. Up to 332 conditions per place. [2021-10-28 23:44:47,774 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 20 selfloop transitions, 32 changer transitions 9/122 dead transitions. [2021-10-28 23:44:47,775 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 122 transitions, 707 flow [2021-10-28 23:44:47,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:44:47,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 23:44:47,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 941 transitions. [2021-10-28 23:44:47,779 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8827392120075047 [2021-10-28 23:44:47,779 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 941 transitions. [2021-10-28 23:44:47,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 941 transitions. [2021-10-28 23:44:47,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:44:47,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 941 transitions. [2021-10-28 23:44:47,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.38461538461539) internal successors, (941), 13 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:47,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:47,789 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:47,789 INFO L186 Difference]: Start difference. First operand has 101 places, 87 transitions, 361 flow. Second operand 13 states and 941 transitions. [2021-10-28 23:44:47,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 122 transitions, 707 flow [2021-10-28 23:44:47,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 122 transitions, 705 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-28 23:44:47,801 INFO L242 Difference]: Finished difference. Result has 116 places, 107 transitions, 602 flow [2021-10-28 23:44:47,802 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=602, PETRI_PLACES=116, PETRI_TRANSITIONS=107} [2021-10-28 23:44:47,802 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 40 predicate places. [2021-10-28 23:44:47,802 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 107 transitions, 602 flow [2021-10-28 23:44:47,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:47,803 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:44:47,804 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] [2021-10-28 23:44:47,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:44:47,804 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 23:44:47,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:47,805 INFO L85 PathProgramCache]: Analyzing trace with hash -2118190118, now seen corresponding path program 1 times [2021-10-28 23:44:47,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:47,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872972615] [2021-10-28 23:44:47,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:47,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:47,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:47,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:47,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872972615] [2021-10-28 23:44:47,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872972615] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:44:47,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:44:47,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:44:47,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218811574] [2021-10-28 23:44:47,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:44:47,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:47,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:44:47,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:44:47,985 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-10-28 23:44:47,986 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 107 transitions, 602 flow. Second operand has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:47,986 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:44:47,987 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-10-28 23:44:47,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:44:48,332 INFO L129 PetriNetUnfolder]: 245/722 cut-off events. [2021-10-28 23:44:48,332 INFO L130 PetriNetUnfolder]: For 3089/3901 co-relation queries the response was YES. [2021-10-28 23:44:48,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3024 conditions, 722 events. 245/722 cut-off events. For 3089/3901 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 5464 event pairs, 0 based on Foata normal form. 105/767 useless extension candidates. Maximal degree in co-relation 2968. Up to 261 conditions per place. [2021-10-28 23:44:48,345 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 16 selfloop transitions, 36 changer transitions 20/133 dead transitions. [2021-10-28 23:44:48,345 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 133 transitions, 920 flow [2021-10-28 23:44:48,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 23:44:48,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-28 23:44:48,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1144 transitions. [2021-10-28 23:44:48,351 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8719512195121951 [2021-10-28 23:44:48,352 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1144 transitions. [2021-10-28 23:44:48,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1144 transitions. [2021-10-28 23:44:48,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:44:48,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1144 transitions. [2021-10-28 23:44:48,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 71.5) internal successors, (1144), 16 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:48,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 82.0) internal successors, (1394), 17 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:48,365 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 82.0) internal successors, (1394), 17 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:48,366 INFO L186 Difference]: Start difference. First operand has 116 places, 107 transitions, 602 flow. Second operand 16 states and 1144 transitions. [2021-10-28 23:44:48,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 133 transitions, 920 flow [2021-10-28 23:44:48,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 133 transitions, 757 flow, removed 67 selfloop flow, removed 7 redundant places. [2021-10-28 23:44:48,396 INFO L242 Difference]: Finished difference. Result has 131 places, 107 transitions, 589 flow [2021-10-28 23:44:48,396 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=589, PETRI_PLACES=131, PETRI_TRANSITIONS=107} [2021-10-28 23:44:48,397 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 55 predicate places. [2021-10-28 23:44:48,397 INFO L470 AbstractCegarLoop]: Abstraction has has 131 places, 107 transitions, 589 flow [2021-10-28 23:44:48,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:48,398 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:44:48,398 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] [2021-10-28 23:44:48,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:44:48,398 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 23:44:48,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:48,399 INFO L85 PathProgramCache]: Analyzing trace with hash -598373660, now seen corresponding path program 1 times [2021-10-28 23:44:48,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:48,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320830240] [2021-10-28 23:44:48,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:48,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:48,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:48,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:48,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:48,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320830240] [2021-10-28 23:44:48,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320830240] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:44:48,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:44:48,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:44:48,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467483113] [2021-10-28 23:44:48,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:44:48,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:48,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:44:48,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:44:48,547 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 82 [2021-10-28 23:44:48,548 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 107 transitions, 589 flow. Second operand has 7 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:48,548 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:44:48,549 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 82 [2021-10-28 23:44:48,549 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:44:48,783 INFO L129 PetriNetUnfolder]: 180/743 cut-off events. [2021-10-28 23:44:48,784 INFO L130 PetriNetUnfolder]: For 1675/1776 co-relation queries the response was YES. [2021-10-28 23:44:48,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2276 conditions, 743 events. 180/743 cut-off events. For 1675/1776 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6179 event pairs, 0 based on Foata normal form. 7/701 useless extension candidates. Maximal degree in co-relation 2212. Up to 99 conditions per place. [2021-10-28 23:44:48,790 INFO L132 encePairwiseOnDemand]: 70/82 looper letters, 8 selfloop transitions, 7 changer transitions 46/117 dead transitions. [2021-10-28 23:44:48,791 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 117 transitions, 706 flow [2021-10-28 23:44:48,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:44:48,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 23:44:48,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 532 transitions. [2021-10-28 23:44:48,793 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8109756097560976 [2021-10-28 23:44:48,794 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 532 transitions. [2021-10-28 23:44:48,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 532 transitions. [2021-10-28 23:44:48,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:44:48,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 532 transitions. [2021-10-28 23:44:48,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 66.5) internal successors, (532), 8 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:48,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:48,799 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:48,799 INFO L186 Difference]: Start difference. First operand has 131 places, 107 transitions, 589 flow. Second operand 8 states and 532 transitions. [2021-10-28 23:44:48,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 117 transitions, 706 flow [2021-10-28 23:44:48,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 117 transitions, 625 flow, removed 16 selfloop flow, removed 14 redundant places. [2021-10-28 23:44:48,823 INFO L242 Difference]: Finished difference. Result has 125 places, 71 transitions, 282 flow [2021-10-28 23:44:48,823 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=282, PETRI_PLACES=125, PETRI_TRANSITIONS=71} [2021-10-28 23:44:48,823 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 49 predicate places. [2021-10-28 23:44:48,824 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 71 transitions, 282 flow [2021-10-28 23:44:48,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:48,824 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:44:48,825 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] [2021-10-28 23:44:48,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:44:48,825 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 23:44:48,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:48,826 INFO L85 PathProgramCache]: Analyzing trace with hash 118950330, now seen corresponding path program 2 times [2021-10-28 23:44:48,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:48,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712453416] [2021-10-28 23:44:48,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:48,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:48,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:48,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:48,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712453416] [2021-10-28 23:44:48,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712453416] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:44:48,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:44:48,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:44:48,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158132592] [2021-10-28 23:44:48,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:44:48,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:48,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:44:48,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:44:48,945 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 82 [2021-10-28 23:44:48,946 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 71 transitions, 282 flow. Second operand has 8 states, 8 states have (on average 64.875) internal successors, (519), 8 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:48,946 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:44:48,946 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 82 [2021-10-28 23:44:48,946 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:44:49,027 INFO L129 PetriNetUnfolder]: 5/80 cut-off events. [2021-10-28 23:44:49,027 INFO L130 PetriNetUnfolder]: For 75/77 co-relation queries the response was YES. [2021-10-28 23:44:49,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 80 events. 5/80 cut-off events. For 75/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 80 event pairs, 0 based on Foata normal form. 2/81 useless extension candidates. Maximal degree in co-relation 171. Up to 9 conditions per place. [2021-10-28 23:44:49,028 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2021-10-28 23:44:49,029 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 69 transitions, 304 flow [2021-10-28 23:44:49,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:44:49,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 23:44:49,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 582 transitions. [2021-10-28 23:44:49,031 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7886178861788617 [2021-10-28 23:44:49,032 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 582 transitions. [2021-10-28 23:44:49,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 582 transitions. [2021-10-28 23:44:49,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:44:49,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 582 transitions. [2021-10-28 23:44:49,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 64.66666666666667) internal successors, (582), 9 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:49,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:49,037 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:49,038 INFO L186 Difference]: Start difference. First operand has 125 places, 71 transitions, 282 flow. Second operand 9 states and 582 transitions. [2021-10-28 23:44:49,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 69 transitions, 304 flow [2021-10-28 23:44:49,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 69 transitions, 206 flow, removed 17 selfloop flow, removed 28 redundant places. [2021-10-28 23:44:49,041 INFO L242 Difference]: Finished difference. Result has 86 places, 0 transitions, 0 flow [2021-10-28 23:44:49,041 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=86, PETRI_TRANSITIONS=0} [2021-10-28 23:44:49,041 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 10 predicate places. [2021-10-28 23:44:49,042 INFO L470 AbstractCegarLoop]: Abstraction has has 86 places, 0 transitions, 0 flow [2021-10-28 23:44:49,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 64.875) internal successors, (519), 8 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:44:49,045 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:44:49,045 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 23:44:49,046 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 23:44:49,046 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-28 23:44:49,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:44:49,049 INFO L731 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2021-10-28 23:44:49,052 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 23:44:49,052 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:44:49,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:44:49 BasicIcfg [2021-10-28 23:44:49,055 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:44:49,055 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:44:49,055 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:44:49,056 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:44:49,056 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:44:44" (3/4) ... [2021-10-28 23:44:49,059 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:44:49,066 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-28 23:44:49,066 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-28 23:44:49,067 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-28 23:44:49,071 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-28 23:44:49,072 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:44:49,072 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:44:49,072 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:44:49,108 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2965c7b7-bb9d-4722-b51d-3e0dc8c6d78f/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:44:49,113 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:44:49,115 INFO L168 Benchmark]: Toolchain (without parser) took 5736.58 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 87.7 MB in the beginning and 68.2 MB in the end (delta: 19.5 MB). Peak memory consumption was 43.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:44:49,116 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 119.5 MB. Free memory was 75.5 MB in the beginning and 75.4 MB in the end (delta: 55.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:44:49,116 INFO L168 Benchmark]: CACSL2BoogieTranslator took 516.52 ms. Allocated memory is still 119.5 MB. Free memory was 87.4 MB in the beginning and 83.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:44:49,116 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.08 ms. Allocated memory is still 119.5 MB. Free memory was 83.8 MB in the beginning and 81.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:44:49,117 INFO L168 Benchmark]: Boogie Preprocessor took 55.22 ms. Allocated memory is still 119.5 MB. Free memory was 81.7 MB in the beginning and 80.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:44:49,117 INFO L168 Benchmark]: RCFGBuilder took 479.62 ms. Allocated memory is still 119.5 MB. Free memory was 80.6 MB in the beginning and 68.2 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:44:49,118 INFO L168 Benchmark]: TraceAbstraction took 4568.62 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 68.0 MB in the beginning and 71.4 MB in the end (delta: -3.4 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:44:49,118 INFO L168 Benchmark]: Witness Printer took 58.27 ms. Allocated memory is still 144.7 MB. Free memory was 71.4 MB in the beginning and 68.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:44:49,121 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 119.5 MB. Free memory was 75.5 MB in the beginning and 75.4 MB in the end (delta: 55.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 516.52 ms. Allocated memory is still 119.5 MB. Free memory was 87.4 MB in the beginning and 83.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.08 ms. Allocated memory is still 119.5 MB. Free memory was 83.8 MB in the beginning and 81.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.22 ms. Allocated memory is still 119.5 MB. Free memory was 81.7 MB in the beginning and 80.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 479.62 ms. Allocated memory is still 119.5 MB. Free memory was 80.6 MB in the beginning and 68.2 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4568.62 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 68.0 MB in the beginning and 71.4 MB in the end (delta: -3.4 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. * Witness Printer took 58.27 ms. Allocated memory is still 144.7 MB. Free memory was 71.4 MB in the beginning and 68.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 104 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.3s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 95 SDtfs, 274 SDslu, 299 SDs, 0 SdLazy, 356 SolverSat, 95 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=602occurred in iteration=5, InterpolantAutomatonStates: 89, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 428 NumberOfCodeBlocks, 428 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 420 ConstructedInterpolants, 0 QuantifiedInterpolants, 1704 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 23:44:49,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2965c7b7-bb9d-4722-b51d-3e0dc8c6d78f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...