./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/lamport.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c758ff2-6026-4ecc-bbe4-a423174befda/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c758ff2-6026-4ecc-bbe4-a423174befda/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c758ff2-6026-4ecc-bbe4-a423174befda/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c758ff2-6026-4ecc-bbe4-a423174befda/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/lamport.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c758ff2-6026-4ecc-bbe4-a423174befda/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c758ff2-6026-4ecc-bbe4-a423174befda/bin/uautomizer-IVEQpCNsaX --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 c35b909c90b92e30d40b0275e3d226db26dbebaf39dc73a31d7e72eee871d214 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:42:10,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:42:10,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:42:10,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:42:10,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:42:10,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:42:10,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:42:10,861 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:42:10,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:42:10,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:42:10,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:42:10,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:42:10,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:42:10,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:42:10,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:42:10,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:42:10,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:42:10,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:42:10,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:42:10,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:42:10,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:42:10,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:42:10,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:42:10,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:42:10,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:42:10,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:42:10,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:42:10,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:42:10,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:42:10,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:42:10,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:42:10,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:42:10,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:42:10,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:42:10,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:42:10,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:42:10,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:42:10,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:42:10,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:42:10,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:42:10,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:42:10,915 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c758ff2-6026-4ecc-bbe4-a423174befda/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 08:42:10,951 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:42:10,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:42:10,952 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:42:10,952 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:42:10,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:42:10,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:42:10,954 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:42:10,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:42:10,954 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:42:10,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:42:10,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:42:10,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:42:10,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:42:10,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:42:10,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:42:10,956 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:42:10,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:42:10,956 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:42:10,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:42:10,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:42:10,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:42:10,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:42:10,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:42:10,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:42:10,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:42:10,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:42:10,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:42:10,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:42:10,959 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:42:10,959 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:42:10,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:42:10,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:42:10,959 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_6c758ff2-6026-4ecc-bbe4-a423174befda/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c758ff2-6026-4ecc-bbe4-a423174befda/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c35b909c90b92e30d40b0275e3d226db26dbebaf39dc73a31d7e72eee871d214 [2021-11-09 08:42:11,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:42:11,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:42:11,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:42:11,304 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:42:11,305 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:42:11,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c758ff2-6026-4ecc-bbe4-a423174befda/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/pthread-atomic/lamport.i [2021-11-09 08:42:11,394 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c758ff2-6026-4ecc-bbe4-a423174befda/bin/uautomizer-IVEQpCNsaX/data/0ae4b6ce4/da37588b5bd14eb4822a86ee07678b89/FLAGaa36ee278 [2021-11-09 08:42:12,096 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:42:12,097 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c758ff2-6026-4ecc-bbe4-a423174befda/sv-benchmarks/c/pthread-atomic/lamport.i [2021-11-09 08:42:12,120 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c758ff2-6026-4ecc-bbe4-a423174befda/bin/uautomizer-IVEQpCNsaX/data/0ae4b6ce4/da37588b5bd14eb4822a86ee07678b89/FLAGaa36ee278 [2021-11-09 08:42:12,349 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c758ff2-6026-4ecc-bbe4-a423174befda/bin/uautomizer-IVEQpCNsaX/data/0ae4b6ce4/da37588b5bd14eb4822a86ee07678b89 [2021-11-09 08:42:12,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:42:12,357 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:42:12,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:42:12,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:42:12,365 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:42:12,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:42:12" (1/1) ... [2021-11-09 08:42:12,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68cb94bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:42:12, skipping insertion in model container [2021-11-09 08:42:12,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:42:12" (1/1) ... [2021-11-09 08:42:12,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:42:12,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:42:12,637 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-09 08:42:12,785 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_6c758ff2-6026-4ecc-bbe4-a423174befda/sv-benchmarks/c/pthread-atomic/lamport.i[32156,32169] [2021-11-09 08:42:12,793 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_6c758ff2-6026-4ecc-bbe4-a423174befda/sv-benchmarks/c/pthread-atomic/lamport.i[34083,34096] [2021-11-09 08:42:12,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:42:12,807 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:42:12,822 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-09 08:42:12,846 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_6c758ff2-6026-4ecc-bbe4-a423174befda/sv-benchmarks/c/pthread-atomic/lamport.i[32156,32169] [2021-11-09 08:42:12,851 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_6c758ff2-6026-4ecc-bbe4-a423174befda/sv-benchmarks/c/pthread-atomic/lamport.i[34083,34096] [2021-11-09 08:42:12,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:42:12,919 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:42:12,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:42:12 WrapperNode [2021-11-09 08:42:12,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:42:12,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:42:12,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:42:12,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:42:12,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:42:12" (1/1) ... [2021-11-09 08:42:12,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:42:12" (1/1) ... [2021-11-09 08:42:12,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:42:12,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:42:12,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:42:12,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:42:13,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:42:12" (1/1) ... [2021-11-09 08:42:13,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:42:12" (1/1) ... [2021-11-09 08:42:13,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:42:12" (1/1) ... [2021-11-09 08:42:13,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:42:12" (1/1) ... [2021-11-09 08:42:13,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:42:12" (1/1) ... [2021-11-09 08:42:13,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:42:12" (1/1) ... [2021-11-09 08:42:13,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:42:12" (1/1) ... [2021-11-09 08:42:13,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:42:13,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:42:13,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:42:13,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:42:13,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:42:12" (1/1) ... [2021-11-09 08:42:13,078 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:42:13,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c758ff2-6026-4ecc-bbe4-a423174befda/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:42:13,103 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c758ff2-6026-4ecc-bbe4-a423174befda/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:42:13,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c758ff2-6026-4ecc-bbe4-a423174befda/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:42:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 08:42:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-11-09 08:42:13,149 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-11-09 08:42:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-11-09 08:42:13,149 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-11-09 08:42:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 08:42:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-09 08:42:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:42:13,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 08:42:13,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:42:13,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-09 08:42:13,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:42:13,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:42:13,152 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-09 08:42:13,569 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:42:13,569 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-09 08:42:13,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:42:13 BoogieIcfgContainer [2021-11-09 08:42:13,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:42:13,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:42:13,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:42:13,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:42:13,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:42:12" (1/3) ... [2021-11-09 08:42:13,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f0659a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:42:13, skipping insertion in model container [2021-11-09 08:42:13,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:42:12" (2/3) ... [2021-11-09 08:42:13,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f0659a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:42:13, skipping insertion in model container [2021-11-09 08:42:13,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:42:13" (3/3) ... [2021-11-09 08:42:13,580 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.i [2021-11-09 08:42:13,586 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-09 08:42:13,586 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:42:13,586 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-09 08:42:13,586 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-09 08:42:13,625 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,626 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,626 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,626 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,626 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,626 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,627 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,627 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,628 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,628 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,628 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,629 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,629 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,629 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,629 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,629 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,630 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,630 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,630 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,631 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,631 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,631 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,631 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,631 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,632 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,632 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,632 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,632 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,633 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,633 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,633 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,633 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,634 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,634 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,634 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,634 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,635 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,635 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,638 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,639 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,639 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,639 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,639 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,640 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,640 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,640 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,640 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,641 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,641 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,641 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,642 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,642 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,643 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,643 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,645 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,645 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,646 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,646 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,646 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,646 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,646 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,647 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,649 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,650 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,650 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,650 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,650 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,651 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,651 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,651 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,652 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,652 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,653 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,653 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,654 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,654 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,657 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,657 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,657 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,658 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,660 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,664 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,665 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,666 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,669 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,669 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,669 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,670 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,670 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,670 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,670 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,671 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,671 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,671 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,671 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,671 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,672 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,672 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,672 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,672 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,672 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,673 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,673 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,673 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,673 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,674 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,674 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,674 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,677 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,677 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,678 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,681 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,681 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,681 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,681 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,688 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,689 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,689 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,689 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,690 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,690 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,690 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:42:13,708 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-09 08:42:13,771 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:42:13,779 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 [2021-11-09 08:42:13,779 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-09 08:42:13,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 112 places, 129 transitions, 274 flow [2021-11-09 08:42:13,883 INFO L129 PetriNetUnfolder]: 24/127 cut-off events. [2021-11-09 08:42:13,883 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-09 08:42:13,890 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 127 events. 24/127 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 257 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 97. Up to 5 conditions per place. [2021-11-09 08:42:13,891 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 129 transitions, 274 flow [2021-11-09 08:42:13,899 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 118 transitions, 245 flow [2021-11-09 08:42:13,915 INFO L129 PetriNetUnfolder]: 2/37 cut-off events. [2021-11-09 08:42:13,915 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-09 08:42:13,916 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:42:13,916 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] [2021-11-09 08:42:13,917 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-09 08:42:13,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:42:13,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1608657040, now seen corresponding path program 1 times [2021-11-09 08:42:13,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:42:13,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227086338] [2021-11-09 08:42:13,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:42:13,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:42:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:42:14,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:42:14,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:42:14,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227086338] [2021-11-09 08:42:14,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227086338] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:42:14,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:42:14,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 08:42:14,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890466199] [2021-11-09 08:42:14,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 08:42:14,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:42:14,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 08:42:14,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:42:14,216 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 129 [2021-11-09 08:42:14,221 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 118 transitions, 245 flow. Second operand has 2 states, 2 states have (on average 117.5) internal successors, (235), 2 states have internal predecessors, (235), 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) [2021-11-09 08:42:14,221 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:42:14,221 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 129 [2021-11-09 08:42:14,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:42:14,276 INFO L129 PetriNetUnfolder]: 12/106 cut-off events. [2021-11-09 08:42:14,276 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-11-09 08:42:14,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 106 events. 12/106 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 204 event pairs, 0 based on Foata normal form. 12/104 useless extension candidates. Maximal degree in co-relation 111. Up to 3 conditions per place. [2021-11-09 08:42:14,281 INFO L132 encePairwiseOnDemand]: 117/129 looper letters, 0 selfloop transitions, 0 changer transitions 0/106 dead transitions. [2021-11-09 08:42:14,281 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 106 transitions, 221 flow [2021-11-09 08:42:14,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 08:42:14,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-11-09 08:42:14,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 246 transitions. [2021-11-09 08:42:14,296 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9534883720930233 [2021-11-09 08:42:14,297 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 246 transitions. [2021-11-09 08:42:14,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 246 transitions. [2021-11-09 08:42:14,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:42:14,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 246 transitions. [2021-11-09 08:42:14,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 123.0) internal successors, (246), 2 states have internal predecessors, (246), 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) [2021-11-09 08:42:14,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 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) [2021-11-09 08:42:14,317 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 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) [2021-11-09 08:42:14,319 INFO L186 Difference]: Start difference. First operand has 101 places, 118 transitions, 245 flow. Second operand 2 states and 246 transitions. [2021-11-09 08:42:14,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 106 transitions, 221 flow [2021-11-09 08:42:14,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 106 transitions, 216 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-11-09 08:42:14,329 INFO L242 Difference]: Finished difference. Result has 99 places, 106 transitions, 216 flow [2021-11-09 08:42:14,331 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=216, PETRI_PLACES=99, PETRI_TRANSITIONS=106} [2021-11-09 08:42:14,332 INFO L334 CegarLoopForPetriNet]: 101 programPoint places, -2 predicate places. [2021-11-09 08:42:14,332 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 106 transitions, 216 flow [2021-11-09 08:42:14,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 117.5) internal successors, (235), 2 states have internal predecessors, (235), 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) [2021-11-09 08:42:14,333 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:42:14,333 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] [2021-11-09 08:42:14,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:42:14,333 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-09 08:42:14,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:42:14,334 INFO L85 PathProgramCache]: Analyzing trace with hash 905942179, now seen corresponding path program 1 times [2021-11-09 08:42:14,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:42:14,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118170261] [2021-11-09 08:42:14,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:42:14,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:42:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:42:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:42:14,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:42:14,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118170261] [2021-11-09 08:42:14,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118170261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:42:14,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:42:14,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:42:14,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430410475] [2021-11-09 08:42:14,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:42:14,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:42:14,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:42:14,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:42:14,488 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 129 [2021-11-09 08:42:14,489 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 106 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 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) [2021-11-09 08:42:14,489 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:42:14,489 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 129 [2021-11-09 08:42:14,490 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:42:14,569 INFO L129 PetriNetUnfolder]: 19/160 cut-off events. [2021-11-09 08:42:14,569 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-09 08:42:14,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 160 events. 19/160 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 466 event pairs, 2 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 191. Up to 18 conditions per place. [2021-11-09 08:42:14,575 INFO L132 encePairwiseOnDemand]: 124/129 looper letters, 7 selfloop transitions, 3 changer transitions 0/109 dead transitions. [2021-11-09 08:42:14,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 109 transitions, 242 flow [2021-11-09 08:42:14,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:42:14,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-09 08:42:14,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 342 transitions. [2021-11-09 08:42:14,582 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8837209302325582 [2021-11-09 08:42:14,582 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 342 transitions. [2021-11-09 08:42:14,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 342 transitions. [2021-11-09 08:42:14,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:42:14,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 342 transitions. [2021-11-09 08:42:14,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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) [2021-11-09 08:42:14,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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) [2021-11-09 08:42:14,596 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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) [2021-11-09 08:42:14,596 INFO L186 Difference]: Start difference. First operand has 99 places, 106 transitions, 216 flow. Second operand 3 states and 342 transitions. [2021-11-09 08:42:14,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 109 transitions, 242 flow [2021-11-09 08:42:14,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 109 transitions, 242 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-09 08:42:14,602 INFO L242 Difference]: Finished difference. Result has 103 places, 107 transitions, 236 flow [2021-11-09 08:42:14,602 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=103, PETRI_TRANSITIONS=107} [2021-11-09 08:42:14,603 INFO L334 CegarLoopForPetriNet]: 101 programPoint places, 2 predicate places. [2021-11-09 08:42:14,603 INFO L470 AbstractCegarLoop]: Abstraction has has 103 places, 107 transitions, 236 flow [2021-11-09 08:42:14,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 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) [2021-11-09 08:42:14,604 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:42:14,604 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] [2021-11-09 08:42:14,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:42:14,604 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-09 08:42:14,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:42:14,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1527108856, now seen corresponding path program 1 times [2021-11-09 08:42:14,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:42:14,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601135101] [2021-11-09 08:42:14,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:42:14,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:42:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:42:14,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:42:14,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:42:14,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601135101] [2021-11-09 08:42:14,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601135101] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:42:14,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:42:14,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:42:14,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288357384] [2021-11-09 08:42:14,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:42:14,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:42:14,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:42:14,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:42:14,714 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 129 [2021-11-09 08:42:14,714 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 107 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 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) [2021-11-09 08:42:14,715 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:42:14,715 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 129 [2021-11-09 08:42:14,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:42:14,774 INFO L129 PetriNetUnfolder]: 14/142 cut-off events. [2021-11-09 08:42:14,775 INFO L130 PetriNetUnfolder]: For 14/17 co-relation queries the response was YES. [2021-11-09 08:42:14,775 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 142 events. 14/142 cut-off events. For 14/17 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 368 event pairs, 2 based on Foata normal form. 6/134 useless extension candidates. Maximal degree in co-relation 183. Up to 11 conditions per place. [2021-11-09 08:42:14,777 INFO L132 encePairwiseOnDemand]: 125/129 looper letters, 6 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2021-11-09 08:42:14,777 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 107 transitions, 252 flow [2021-11-09 08:42:14,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:42:14,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-09 08:42:14,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2021-11-09 08:42:14,779 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8785529715762274 [2021-11-09 08:42:14,779 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2021-11-09 08:42:14,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2021-11-09 08:42:14,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:42:14,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2021-11-09 08:42:14,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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) [2021-11-09 08:42:14,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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) [2021-11-09 08:42:14,784 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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) [2021-11-09 08:42:14,785 INFO L186 Difference]: Start difference. First operand has 103 places, 107 transitions, 236 flow. Second operand 3 states and 340 transitions. [2021-11-09 08:42:14,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 107 transitions, 252 flow [2021-11-09 08:42:14,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 107 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-09 08:42:14,794 INFO L242 Difference]: Finished difference. Result has 104 places, 107 transitions, 240 flow [2021-11-09 08:42:14,794 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=104, PETRI_TRANSITIONS=107} [2021-11-09 08:42:14,795 INFO L334 CegarLoopForPetriNet]: 101 programPoint places, 3 predicate places. [2021-11-09 08:42:14,795 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 107 transitions, 240 flow [2021-11-09 08:42:14,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 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) [2021-11-09 08:42:14,796 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:42:14,797 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] [2021-11-09 08:42:14,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 08:42:14,797 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-09 08:42:14,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:42:14,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1188193557, now seen corresponding path program 1 times [2021-11-09 08:42:14,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:42:14,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497111183] [2021-11-09 08:42:14,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:42:14,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:42:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:42:14,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:42:14,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:42:14,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497111183] [2021-11-09 08:42:14,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497111183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:42:14,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:42:14,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:42:14,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39653313] [2021-11-09 08:42:14,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:42:14,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:42:14,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:42:14,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:42:14,899 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 129 [2021-11-09 08:42:14,900 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 107 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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) [2021-11-09 08:42:14,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:42:14,900 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 129 [2021-11-09 08:42:14,900 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:42:15,289 INFO L129 PetriNetUnfolder]: 396/1120 cut-off events. [2021-11-09 08:42:15,289 INFO L130 PetriNetUnfolder]: For 60/61 co-relation queries the response was YES. [2021-11-09 08:42:15,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1797 conditions, 1120 events. 396/1120 cut-off events. For 60/61 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 7224 event pairs, 43 based on Foata normal form. 0/959 useless extension candidates. Maximal degree in co-relation 1791. Up to 259 conditions per place. [2021-11-09 08:42:15,306 INFO L132 encePairwiseOnDemand]: 115/129 looper letters, 45 selfloop transitions, 5 changer transitions 24/155 dead transitions. [2021-11-09 08:42:15,306 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 155 transitions, 484 flow [2021-11-09 08:42:15,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:42:15,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-09 08:42:15,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 537 transitions. [2021-11-09 08:42:15,311 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8325581395348837 [2021-11-09 08:42:15,311 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 537 transitions. [2021-11-09 08:42:15,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 537 transitions. [2021-11-09 08:42:15,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:42:15,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 537 transitions. [2021-11-09 08:42:15,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 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) [2021-11-09 08:42:15,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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) [2021-11-09 08:42:15,318 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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) [2021-11-09 08:42:15,318 INFO L186 Difference]: Start difference. First operand has 104 places, 107 transitions, 240 flow. Second operand 5 states and 537 transitions. [2021-11-09 08:42:15,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 155 transitions, 484 flow [2021-11-09 08:42:15,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 155 transitions, 482 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-09 08:42:15,332 INFO L242 Difference]: Finished difference. Result has 111 places, 112 transitions, 314 flow [2021-11-09 08:42:15,332 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=314, PETRI_PLACES=111, PETRI_TRANSITIONS=112} [2021-11-09 08:42:15,333 INFO L334 CegarLoopForPetriNet]: 101 programPoint places, 10 predicate places. [2021-11-09 08:42:15,333 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 112 transitions, 314 flow [2021-11-09 08:42:15,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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) [2021-11-09 08:42:15,334 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:42:15,334 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] [2021-11-09 08:42:15,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 08:42:15,335 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-09 08:42:15,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:42:15,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1681214679, now seen corresponding path program 2 times [2021-11-09 08:42:15,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:42:15,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843400770] [2021-11-09 08:42:15,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:42:15,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:42:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:42:15,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:42:15,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:42:15,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843400770] [2021-11-09 08:42:15,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843400770] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:42:15,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:42:15,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:42:15,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550143315] [2021-11-09 08:42:15,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:42:15,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:42:15,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:42:15,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:42:15,455 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-11-09 08:42:15,457 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 112 transitions, 314 flow. Second operand has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 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) [2021-11-09 08:42:15,457 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:42:15,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-11-09 08:42:15,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:42:15,736 INFO L129 PetriNetUnfolder]: 306/1472 cut-off events. [2021-11-09 08:42:15,736 INFO L130 PetriNetUnfolder]: For 211/226 co-relation queries the response was YES. [2021-11-09 08:42:15,744 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2322 conditions, 1472 events. 306/1472 cut-off events. For 211/226 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 10955 event pairs, 27 based on Foata normal form. 1/1301 useless extension candidates. Maximal degree in co-relation 2313. Up to 183 conditions per place. [2021-11-09 08:42:15,752 INFO L132 encePairwiseOnDemand]: 125/129 looper letters, 18 selfloop transitions, 6 changer transitions 0/128 dead transitions. [2021-11-09 08:42:15,753 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 128 transitions, 396 flow [2021-11-09 08:42:15,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:42:15,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-09 08:42:15,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 570 transitions. [2021-11-09 08:42:15,755 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8837209302325582 [2021-11-09 08:42:15,755 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 570 transitions. [2021-11-09 08:42:15,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 570 transitions. [2021-11-09 08:42:15,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:42:15,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 570 transitions. [2021-11-09 08:42:15,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 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) [2021-11-09 08:42:15,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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) [2021-11-09 08:42:15,761 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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) [2021-11-09 08:42:15,761 INFO L186 Difference]: Start difference. First operand has 111 places, 112 transitions, 314 flow. Second operand 5 states and 570 transitions. [2021-11-09 08:42:15,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 128 transitions, 396 flow [2021-11-09 08:42:15,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 128 transitions, 380 flow, removed 8 selfloop flow, removed 1 redundant places. [2021-11-09 08:42:15,771 INFO L242 Difference]: Finished difference. Result has 117 places, 118 transitions, 348 flow [2021-11-09 08:42:15,772 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=348, PETRI_PLACES=117, PETRI_TRANSITIONS=118} [2021-11-09 08:42:15,772 INFO L334 CegarLoopForPetriNet]: 101 programPoint places, 16 predicate places. [2021-11-09 08:42:15,772 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 118 transitions, 348 flow [2021-11-09 08:42:15,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 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) [2021-11-09 08:42:15,773 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:42:15,773 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] [2021-11-09 08:42:15,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 08:42:15,774 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-09 08:42:15,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:42:15,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1414459315, now seen corresponding path program 3 times [2021-11-09 08:42:15,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:42:15,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918301514] [2021-11-09 08:42:15,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:42:15,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:42:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:42:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:42:15,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:42:15,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918301514] [2021-11-09 08:42:15,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918301514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:42:15,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:42:15,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:42:15,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952166342] [2021-11-09 08:42:15,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:42:15,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:42:15,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:42:15,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:42:15,846 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 129 [2021-11-09 08:42:15,851 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 118 transitions, 348 flow. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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) [2021-11-09 08:42:15,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:42:15,851 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 129 [2021-11-09 08:42:15,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:42:16,514 INFO L129 PetriNetUnfolder]: 1095/3679 cut-off events. [2021-11-09 08:42:16,514 INFO L130 PetriNetUnfolder]: For 1282/1321 co-relation queries the response was YES. [2021-11-09 08:42:16,531 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7128 conditions, 3679 events. 1095/3679 cut-off events. For 1282/1321 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 31523 event pairs, 132 based on Foata normal form. 18/3369 useless extension candidates. Maximal degree in co-relation 7116. Up to 831 conditions per place. [2021-11-09 08:42:16,550 INFO L132 encePairwiseOnDemand]: 115/129 looper letters, 61 selfloop transitions, 16 changer transitions 3/167 dead transitions. [2021-11-09 08:42:16,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 167 transitions, 648 flow [2021-11-09 08:42:16,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:42:16,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-09 08:42:16,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 538 transitions. [2021-11-09 08:42:16,553 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.834108527131783 [2021-11-09 08:42:16,553 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 538 transitions. [2021-11-09 08:42:16,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 538 transitions. [2021-11-09 08:42:16,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:42:16,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 538 transitions. [2021-11-09 08:42:16,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.6) internal successors, (538), 5 states have internal predecessors, (538), 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) [2021-11-09 08:42:16,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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) [2021-11-09 08:42:16,559 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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) [2021-11-09 08:42:16,559 INFO L186 Difference]: Start difference. First operand has 117 places, 118 transitions, 348 flow. Second operand 5 states and 538 transitions. [2021-11-09 08:42:16,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 167 transitions, 648 flow [2021-11-09 08:42:16,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 167 transitions, 648 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-09 08:42:16,570 INFO L242 Difference]: Finished difference. Result has 125 places, 131 transitions, 486 flow [2021-11-09 08:42:16,570 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=486, PETRI_PLACES=125, PETRI_TRANSITIONS=131} [2021-11-09 08:42:16,570 INFO L334 CegarLoopForPetriNet]: 101 programPoint places, 24 predicate places. [2021-11-09 08:42:16,570 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 131 transitions, 486 flow [2021-11-09 08:42:16,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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) [2021-11-09 08:42:16,571 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:42:16,571 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] [2021-11-09 08:42:16,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 08:42:16,572 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-09 08:42:16,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:42:16,572 INFO L85 PathProgramCache]: Analyzing trace with hash -982585657, now seen corresponding path program 4 times [2021-11-09 08:42:16,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:42:16,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154080947] [2021-11-09 08:42:16,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:42:16,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:42:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:42:16,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:42:16,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:42:16,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154080947] [2021-11-09 08:42:16,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154080947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:42:16,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:42:16,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:42:16,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824564226] [2021-11-09 08:42:16,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:42:16,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:42:16,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:42:16,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:42:16,651 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-11-09 08:42:16,652 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 131 transitions, 486 flow. Second operand has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 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) [2021-11-09 08:42:16,652 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:42:16,652 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-11-09 08:42:16,652 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:42:17,160 INFO L129 PetriNetUnfolder]: 635/3130 cut-off events. [2021-11-09 08:42:17,161 INFO L130 PetriNetUnfolder]: For 1814/1898 co-relation queries the response was YES. [2021-11-09 08:42:17,183 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6262 conditions, 3130 events. 635/3130 cut-off events. For 1814/1898 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 28250 event pairs, 44 based on Foata normal form. 35/3040 useless extension candidates. Maximal degree in co-relation 6246. Up to 425 conditions per place. [2021-11-09 08:42:17,199 INFO L132 encePairwiseOnDemand]: 125/129 looper letters, 22 selfloop transitions, 11 changer transitions 0/150 dead transitions. [2021-11-09 08:42:17,199 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 150 transitions, 642 flow [2021-11-09 08:42:17,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:42:17,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-09 08:42:17,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 569 transitions. [2021-11-09 08:42:17,202 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8821705426356589 [2021-11-09 08:42:17,202 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 569 transitions. [2021-11-09 08:42:17,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 569 transitions. [2021-11-09 08:42:17,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:42:17,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 569 transitions. [2021-11-09 08:42:17,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 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) [2021-11-09 08:42:17,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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) [2021-11-09 08:42:17,207 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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) [2021-11-09 08:42:17,207 INFO L186 Difference]: Start difference. First operand has 125 places, 131 transitions, 486 flow. Second operand 5 states and 569 transitions. [2021-11-09 08:42:17,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 150 transitions, 642 flow [2021-11-09 08:42:17,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 150 transitions, 642 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-09 08:42:17,219 INFO L242 Difference]: Finished difference. Result has 133 places, 139 transitions, 580 flow [2021-11-09 08:42:17,220 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=580, PETRI_PLACES=133, PETRI_TRANSITIONS=139} [2021-11-09 08:42:17,220 INFO L334 CegarLoopForPetriNet]: 101 programPoint places, 32 predicate places. [2021-11-09 08:42:17,220 INFO L470 AbstractCegarLoop]: Abstraction has has 133 places, 139 transitions, 580 flow [2021-11-09 08:42:17,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 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) [2021-11-09 08:42:17,221 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:42:17,221 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] [2021-11-09 08:42:17,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 08:42:17,222 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-09 08:42:17,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:42:17,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1499577979, now seen corresponding path program 1 times [2021-11-09 08:42:17,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:42:17,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052024980] [2021-11-09 08:42:17,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:42:17,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:42:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:42:17,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:42:17,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:42:17,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052024980] [2021-11-09 08:42:17,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052024980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:42:17,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:42:17,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:42:17,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020904358] [2021-11-09 08:42:17,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:42:17,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:42:17,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:42:17,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:42:17,270 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 129 [2021-11-09 08:42:17,271 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 139 transitions, 580 flow. Second operand has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 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) [2021-11-09 08:42:17,271 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:42:17,271 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 129 [2021-11-09 08:42:17,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:42:17,793 INFO L129 PetriNetUnfolder]: 685/3301 cut-off events. [2021-11-09 08:42:17,793 INFO L130 PetriNetUnfolder]: For 1533/1584 co-relation queries the response was YES. [2021-11-09 08:42:17,815 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6624 conditions, 3301 events. 685/3301 cut-off events. For 1533/1584 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 30857 event pairs, 59 based on Foata normal form. 3/3185 useless extension candidates. Maximal degree in co-relation 6604. Up to 463 conditions per place. [2021-11-09 08:42:17,825 INFO L132 encePairwiseOnDemand]: 122/129 looper letters, 12 selfloop transitions, 10 changer transitions 5/153 dead transitions. [2021-11-09 08:42:17,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 153 transitions, 656 flow [2021-11-09 08:42:17,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:42:17,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-09 08:42:17,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 561 transitions. [2021-11-09 08:42:17,828 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8697674418604651 [2021-11-09 08:42:17,828 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 561 transitions. [2021-11-09 08:42:17,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 561 transitions. [2021-11-09 08:42:17,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:42:17,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 561 transitions. [2021-11-09 08:42:17,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.2) internal successors, (561), 5 states have internal predecessors, (561), 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) [2021-11-09 08:42:17,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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) [2021-11-09 08:42:17,833 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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) [2021-11-09 08:42:17,833 INFO L186 Difference]: Start difference. First operand has 133 places, 139 transitions, 580 flow. Second operand 5 states and 561 transitions. [2021-11-09 08:42:17,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 153 transitions, 656 flow [2021-11-09 08:42:17,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 153 transitions, 656 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-09 08:42:17,846 INFO L242 Difference]: Finished difference. Result has 140 places, 143 transitions, 625 flow [2021-11-09 08:42:17,847 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=625, PETRI_PLACES=140, PETRI_TRANSITIONS=143} [2021-11-09 08:42:17,847 INFO L334 CegarLoopForPetriNet]: 101 programPoint places, 39 predicate places. [2021-11-09 08:42:17,847 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 143 transitions, 625 flow [2021-11-09 08:42:17,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 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) [2021-11-09 08:42:17,848 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:42:17,848 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] [2021-11-09 08:42:17,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 08:42:17,848 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-09 08:42:17,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:42:17,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1492161570, now seen corresponding path program 1 times [2021-11-09 08:42:17,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:42:17,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317797479] [2021-11-09 08:42:17,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:42:17,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:42:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:42:17,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:42:17,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:42:17,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317797479] [2021-11-09 08:42:17,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317797479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:42:17,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:42:17,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:42:17,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427852134] [2021-11-09 08:42:17,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:42:17,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:42:17,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:42:17,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:42:17,929 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 129 [2021-11-09 08:42:17,930 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 143 transitions, 625 flow. Second operand has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 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) [2021-11-09 08:42:17,930 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:42:17,930 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 129 [2021-11-09 08:42:17,930 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:42:18,422 INFO L129 PetriNetUnfolder]: 567/2769 cut-off events. [2021-11-09 08:42:18,423 INFO L130 PetriNetUnfolder]: For 1290/1325 co-relation queries the response was YES. [2021-11-09 08:42:18,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5977 conditions, 2769 events. 567/2769 cut-off events. For 1290/1325 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 24840 event pairs, 43 based on Foata normal form. 8/2690 useless extension candidates. Maximal degree in co-relation 5953. Up to 368 conditions per place. [2021-11-09 08:42:18,456 INFO L132 encePairwiseOnDemand]: 122/129 looper letters, 0 selfloop transitions, 0 changer transitions 150/150 dead transitions. [2021-11-09 08:42:18,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 150 transitions, 663 flow [2021-11-09 08:42:18,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:42:18,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-09 08:42:18,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 562 transitions. [2021-11-09 08:42:18,459 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8713178294573644 [2021-11-09 08:42:18,460 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 562 transitions. [2021-11-09 08:42:18,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 562 transitions. [2021-11-09 08:42:18,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:42:18,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 562 transitions. [2021-11-09 08:42:18,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.4) internal successors, (562), 5 states have internal predecessors, (562), 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) [2021-11-09 08:42:18,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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) [2021-11-09 08:42:18,466 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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) [2021-11-09 08:42:18,466 INFO L186 Difference]: Start difference. First operand has 140 places, 143 transitions, 625 flow. Second operand 5 states and 562 transitions. [2021-11-09 08:42:18,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 150 transitions, 663 flow [2021-11-09 08:42:18,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 150 transitions, 645 flow, removed 8 selfloop flow, removed 1 redundant places. [2021-11-09 08:42:18,489 INFO L242 Difference]: Finished difference. Result has 139 places, 0 transitions, 0 flow [2021-11-09 08:42:18,489 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=139, PETRI_TRANSITIONS=0} [2021-11-09 08:42:18,489 INFO L334 CegarLoopForPetriNet]: 101 programPoint places, 38 predicate places. [2021-11-09 08:42:18,490 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 0 transitions, 0 flow [2021-11-09 08:42:18,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 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) [2021-11-09 08:42:18,493 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 08:42:18,494 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 08:42:18,494 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-11-09 08:42:18,494 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-11-09 08:42:18,494 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 08:42:18,494 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 08:42:18,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 08:42:18,499 INFO L731 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1] [2021-11-09 08:42:18,505 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-09 08:42:18,505 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 08:42:18,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 08:42:18 BasicIcfg [2021-11-09 08:42:18,508 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 08:42:18,509 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 08:42:18,509 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 08:42:18,509 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 08:42:18,510 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:42:13" (3/4) ... [2021-11-09 08:42:18,523 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-09 08:42:18,530 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2021-11-09 08:42:18,530 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2021-11-09 08:42:18,539 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-09 08:42:18,540 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-09 08:42:18,540 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 08:42:18,540 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 08:42:18,574 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c758ff2-6026-4ecc-bbe4-a423174befda/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 08:42:18,574 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 08:42:18,577 INFO L168 Benchmark]: Toolchain (without parser) took 6218.50 ms. Allocated memory was 119.5 MB in the beginning and 216.0 MB in the end (delta: 96.5 MB). Free memory was 77.1 MB in the beginning and 70.4 MB in the end (delta: 6.7 MB). Peak memory consumption was 102.6 MB. Max. memory is 16.1 GB. [2021-11-09 08:42:18,577 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 119.5 MB. Free memory is still 94.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:42:18,578 INFO L168 Benchmark]: CACSL2BoogieTranslator took 558.85 ms. Allocated memory is still 119.5 MB. Free memory was 77.0 MB in the beginning and 84.4 MB in the end (delta: -7.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 08:42:18,578 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.40 ms. Allocated memory is still 119.5 MB. Free memory was 84.4 MB in the beginning and 82.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 08:42:18,579 INFO L168 Benchmark]: Boogie Preprocessor took 74.51 ms. Allocated memory is still 119.5 MB. Free memory was 82.8 MB in the beginning and 81.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 08:42:18,579 INFO L168 Benchmark]: RCFGBuilder took 503.86 ms. Allocated memory is still 119.5 MB. Free memory was 81.2 MB in the beginning and 67.1 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-09 08:42:18,580 INFO L168 Benchmark]: TraceAbstraction took 4934.92 ms. Allocated memory was 119.5 MB in the beginning and 216.0 MB in the end (delta: 96.5 MB). Free memory was 67.1 MB in the beginning and 72.5 MB in the end (delta: -5.4 MB). Peak memory consumption was 115.1 MB. Max. memory is 16.1 GB. [2021-11-09 08:42:18,580 INFO L168 Benchmark]: Witness Printer took 65.52 ms. Allocated memory is still 216.0 MB. Free memory was 72.5 MB in the beginning and 70.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 08:42:18,583 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 119.5 MB. Free memory is still 94.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 558.85 ms. Allocated memory is still 119.5 MB. Free memory was 77.0 MB in the beginning and 84.4 MB in the end (delta: -7.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.40 ms. Allocated memory is still 119.5 MB. Free memory was 84.4 MB in the beginning and 82.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.51 ms. Allocated memory is still 119.5 MB. Free memory was 82.8 MB in the beginning and 81.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 503.86 ms. Allocated memory is still 119.5 MB. Free memory was 81.2 MB in the beginning and 67.1 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4934.92 ms. Allocated memory was 119.5 MB in the beginning and 216.0 MB in the end (delta: 96.5 MB). Free memory was 67.1 MB in the beginning and 72.5 MB in the end (delta: -5.4 MB). Peak memory consumption was 115.1 MB. Max. memory is 16.1 GB. * Witness Printer took 65.52 ms. Allocated memory is still 216.0 MB. Free memory was 72.5 MB in the beginning and 70.4 MB in the end (delta: 2.1 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: 834]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 764]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 172 locations, 6 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: 4.7s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 144 SDtfs, 122 SDslu, 72 SDs, 0 SdLazy, 275 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=625occurred in iteration=8, InterpolantAutomatonStates: 38, 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, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 407 NumberOfCodeBlocks, 407 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 398 ConstructedInterpolants, 0 QuantifiedInterpolants, 538 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-09 08:42:18,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c758ff2-6026-4ecc-bbe4-a423174befda/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE