./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe012_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065814f0-05c4-4be3-9405-d97519aee341/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065814f0-05c4-4be3-9405-d97519aee341/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065814f0-05c4-4be3-9405-d97519aee341/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065814f0-05c4-4be3-9405-d97519aee341/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe012_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065814f0-05c4-4be3-9405-d97519aee341/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065814f0-05c4-4be3-9405-d97519aee341/bin/uautomizer-UnR33cPsHg --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 8ab6224550afdc7bd147a853b67470808fdf25e83f86b697677572dc7a8a62dd .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:19:39,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:19:39,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:19:39,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:19:39,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:19:39,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:19:39,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:19:39,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:19:39,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:19:40,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:19:40,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:19:40,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:19:40,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:19:40,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:19:40,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:19:40,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:19:40,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:19:40,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:19:40,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:19:40,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:19:40,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:19:40,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:19:40,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:19:40,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:19:40,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:19:40,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:19:40,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:19:40,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:19:40,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:19:40,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:19:40,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:19:40,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:19:40,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:19:40,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:19:40,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:19:40,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:19:40,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:19:40,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:19:40,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:19:40,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:19:40,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:19:40,070 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065814f0-05c4-4be3-9405-d97519aee341/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:19:40,118 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:19:40,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:19:40,122 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:19:40,122 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:19:40,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:19:40,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:19:40,131 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:19:40,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:19:40,132 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:19:40,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:19:40,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:19:40,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:19:40,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:19:40,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:19:40,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:19:40,135 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:19:40,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:19:40,136 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:19:40,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:19:40,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:19:40,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:19:40,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:19:40,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:19:40,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:19:40,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:19:40,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:19:40,139 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:19:40,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:19:40,139 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:19:40,141 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:19:40,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:19:40,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:19:40,142 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_065814f0-05c4-4be3-9405-d97519aee341/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065814f0-05c4-4be3-9405-d97519aee341/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ab6224550afdc7bd147a853b67470808fdf25e83f86b697677572dc7a8a62dd [2021-10-28 09:19:40,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:19:40,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:19:40,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:19:40,455 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:19:40,456 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:19:40,457 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065814f0-05c4-4be3-9405-d97519aee341/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/pthread-wmm/safe012_tso.i [2021-10-28 09:19:40,550 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065814f0-05c4-4be3-9405-d97519aee341/bin/uautomizer-UnR33cPsHg/data/1c7113375/df32ea8c103d40948d99aeb00ff2eb47/FLAG921375f37 [2021-10-28 09:19:41,227 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:19:41,227 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065814f0-05c4-4be3-9405-d97519aee341/sv-benchmarks/c/pthread-wmm/safe012_tso.i [2021-10-28 09:19:41,275 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065814f0-05c4-4be3-9405-d97519aee341/bin/uautomizer-UnR33cPsHg/data/1c7113375/df32ea8c103d40948d99aeb00ff2eb47/FLAG921375f37 [2021-10-28 09:19:41,497 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065814f0-05c4-4be3-9405-d97519aee341/bin/uautomizer-UnR33cPsHg/data/1c7113375/df32ea8c103d40948d99aeb00ff2eb47 [2021-10-28 09:19:41,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:19:41,501 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:19:41,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:19:41,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:19:41,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:19:41,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:19:41" (1/1) ... [2021-10-28 09:19:41,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c64d00a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:41, skipping insertion in model container [2021-10-28 09:19:41,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:19:41" (1/1) ... [2021-10-28 09:19:41,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:19:41,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:19:41,802 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_065814f0-05c4-4be3-9405-d97519aee341/sv-benchmarks/c/pthread-wmm/safe012_tso.i[945,958] [2021-10-28 09:19:42,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:19:42,048 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:19:42,073 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_065814f0-05c4-4be3-9405-d97519aee341/sv-benchmarks/c/pthread-wmm/safe012_tso.i[945,958] [2021-10-28 09:19:42,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:19:42,185 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:19:42,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:42 WrapperNode [2021-10-28 09:19:42,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:19:42,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:19:42,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:19:42,189 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:19:42,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:42" (1/1) ... [2021-10-28 09:19:42,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:42" (1/1) ... [2021-10-28 09:19:42,272 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:19:42,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:19:42,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:19:42,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:19:42,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:42" (1/1) ... [2021-10-28 09:19:42,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:42" (1/1) ... [2021-10-28 09:19:42,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:42" (1/1) ... [2021-10-28 09:19:42,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:42" (1/1) ... [2021-10-28 09:19:42,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:42" (1/1) ... [2021-10-28 09:19:42,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:42" (1/1) ... [2021-10-28 09:19:42,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:42" (1/1) ... [2021-10-28 09:19:42,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:19:42,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:19:42,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:19:42,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:19:42,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:42" (1/1) ... [2021-10-28 09:19:42,351 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:19:42,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065814f0-05c4-4be3-9405-d97519aee341/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:19:42,382 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065814f0-05c4-4be3-9405-d97519aee341/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:19:42,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065814f0-05c4-4be3-9405-d97519aee341/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:19:42,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:19:42,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 09:19:42,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:19:42,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:19:42,443 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-28 09:19:42,443 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-28 09:19:42,443 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-28 09:19:42,444 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-28 09:19:42,444 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-28 09:19:42,444 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-28 09:19:42,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:19:42,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 09:19:42,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:19:42,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:19:42,447 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 09:19:42,834 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:19:42,834 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-28 09:19:42,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:19:42 BoogieIcfgContainer [2021-10-28 09:19:42,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:19:42,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:19:42,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:19:42,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:19:42,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:19:41" (1/3) ... [2021-10-28 09:19:42,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c6e457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:19:42, skipping insertion in model container [2021-10-28 09:19:42,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:42" (2/3) ... [2021-10-28 09:19:42,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c6e457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:19:42, skipping insertion in model container [2021-10-28 09:19:42,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:19:42" (3/3) ... [2021-10-28 09:19:42,848 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.i [2021-10-28 09:19:42,854 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 09:19:42,864 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:19:42,864 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:19:42,865 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 09:19:42,917 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,917 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,918 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,918 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,918 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,919 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,919 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,919 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,920 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,920 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,921 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,921 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,922 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,922 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,922 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,923 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,925 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,926 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,926 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,926 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,933 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,933 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,934 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,934 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,935 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,936 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,936 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,937 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,938 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,938 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,938 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,938 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,940 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,940 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,940 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,941 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,945 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,945 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,946 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,946 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,956 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,957 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,957 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,958 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,968 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,968 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,968 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,969 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:19:42,971 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-28 09:19:43,037 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:19:43,046 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:19:43,047 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-28 09:19:43,066 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2021-10-28 09:19:43,151 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2021-10-28 09:19:43,151 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:19:43,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-10-28 09:19:43,156 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2021-10-28 09:19:43,162 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2021-10-28 09:19:43,198 INFO L129 PetriNetUnfolder]: 1/69 cut-off events. [2021-10-28 09:19:43,198 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:19:43,199 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:19:43,199 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:43,200 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:19:43,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:43,206 INFO L85 PathProgramCache]: Analyzing trace with hash -194702042, now seen corresponding path program 1 times [2021-10-28 09:19:43,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:19:43,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314030421] [2021-10-28 09:19:43,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:43,218 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:19:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:43,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:43,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:19:43,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314030421] [2021-10-28 09:19:43,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314030421] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:43,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:43,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:19:43,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597423] [2021-10-28 09:19:43,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:19:43,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:19:43,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:19:43,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:19:43,893 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 85 [2021-10-28 09:19:43,904 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:43,905 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:19:43,905 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 85 [2021-10-28 09:19:43,906 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:19:44,123 INFO L129 PetriNetUnfolder]: 3/84 cut-off events. [2021-10-28 09:19:44,123 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:19:44,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 84 events. 3/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 88 event pairs, 0 based on Foata normal form. 4/87 useless extension candidates. Maximal degree in co-relation 82. Up to 7 conditions per place. [2021-10-28 09:19:44,126 INFO L132 encePairwiseOnDemand]: 78/85 looper letters, 6 selfloop transitions, 2 changer transitions 11/79 dead transitions. [2021-10-28 09:19:44,126 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 79 transitions, 203 flow [2021-10-28 09:19:44,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:19:44,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 09:19:44,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 679 transitions. [2021-10-28 09:19:44,164 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8875816993464052 [2021-10-28 09:19:44,165 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 679 transitions. [2021-10-28 09:19:44,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 679 transitions. [2021-10-28 09:19:44,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:19:44,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 679 transitions. [2021-10-28 09:19:44,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 75.44444444444444) internal successors, (679), 9 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:44,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:44,194 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:44,197 INFO L186 Difference]: Start difference. First operand has 79 places, 70 transitions, 149 flow. Second operand 9 states and 679 transitions. [2021-10-28 09:19:44,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 79 transitions, 203 flow [2021-10-28 09:19:44,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 79 transitions, 200 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-28 09:19:44,207 INFO L242 Difference]: Finished difference. Result has 91 places, 68 transitions, 162 flow [2021-10-28 09:19:44,210 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=162, PETRI_PLACES=91, PETRI_TRANSITIONS=68} [2021-10-28 09:19:44,212 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 12 predicate places. [2021-10-28 09:19:44,212 INFO L470 AbstractCegarLoop]: Abstraction has has 91 places, 68 transitions, 162 flow [2021-10-28 09:19:44,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:44,213 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:19:44,213 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:44,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:19:44,214 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:19:44,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:44,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1835865733, now seen corresponding path program 1 times [2021-10-28 09:19:44,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:19:44,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673983874] [2021-10-28 09:19:44,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:44,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:19:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:44,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:44,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:19:44,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673983874] [2021-10-28 09:19:44,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673983874] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:44,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:44,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:19:44,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134877268] [2021-10-28 09:19:44,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:19:44,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:19:44,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:19:44,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:19:44,597 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2021-10-28 09:19:44,598 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 68 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:44,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:19:44,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2021-10-28 09:19:44,599 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:19:45,147 INFO L129 PetriNetUnfolder]: 65/234 cut-off events. [2021-10-28 09:19:45,147 INFO L130 PetriNetUnfolder]: For 71/85 co-relation queries the response was YES. [2021-10-28 09:19:45,153 INFO L84 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 234 events. 65/234 cut-off events. For 71/85 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 845 event pairs, 5 based on Foata normal form. 8/237 useless extension candidates. Maximal degree in co-relation 423. Up to 35 conditions per place. [2021-10-28 09:19:45,157 INFO L132 encePairwiseOnDemand]: 73/85 looper letters, 16 selfloop transitions, 10 changer transitions 38/118 dead transitions. [2021-10-28 09:19:45,157 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 118 transitions, 446 flow [2021-10-28 09:19:45,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 09:19:45,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-28 09:19:45,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1207 transitions. [2021-10-28 09:19:45,171 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8352941176470589 [2021-10-28 09:19:45,172 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1207 transitions. [2021-10-28 09:19:45,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1207 transitions. [2021-10-28 09:19:45,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:19:45,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1207 transitions. [2021-10-28 09:19:45,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 71.0) internal successors, (1207), 17 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:45,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 85.0) internal successors, (1530), 18 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:45,190 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 85.0) internal successors, (1530), 18 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:45,191 INFO L186 Difference]: Start difference. First operand has 91 places, 68 transitions, 162 flow. Second operand 17 states and 1207 transitions. [2021-10-28 09:19:45,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 118 transitions, 446 flow [2021-10-28 09:19:45,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 118 transitions, 382 flow, removed 28 selfloop flow, removed 8 redundant places. [2021-10-28 09:19:45,206 INFO L242 Difference]: Finished difference. Result has 107 places, 73 transitions, 246 flow [2021-10-28 09:19:45,206 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=246, PETRI_PLACES=107, PETRI_TRANSITIONS=73} [2021-10-28 09:19:45,207 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 28 predicate places. [2021-10-28 09:19:45,208 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 73 transitions, 246 flow [2021-10-28 09:19:45,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:45,212 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:19:45,212 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:45,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:19:45,213 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:19:45,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:45,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1035925963, now seen corresponding path program 1 times [2021-10-28 09:19:45,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:19:45,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915509876] [2021-10-28 09:19:45,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:45,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:19:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:45,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:45,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:19:45,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915509876] [2021-10-28 09:19:45,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915509876] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:45,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:45,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:19:45,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461525133] [2021-10-28 09:19:45,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:19:45,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:19:45,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:19:45,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:19:45,515 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 85 [2021-10-28 09:19:45,516 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 73 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 70.57142857142857) internal successors, (494), 7 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:45,516 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:19:45,517 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 85 [2021-10-28 09:19:45,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:19:45,700 INFO L129 PetriNetUnfolder]: 12/121 cut-off events. [2021-10-28 09:19:45,700 INFO L130 PetriNetUnfolder]: For 307/344 co-relation queries the response was YES. [2021-10-28 09:19:45,704 INFO L84 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 121 events. 12/121 cut-off events. For 307/344 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 250 event pairs, 0 based on Foata normal form. 2/121 useless extension candidates. Maximal degree in co-relation 297. Up to 25 conditions per place. [2021-10-28 09:19:45,705 INFO L132 encePairwiseOnDemand]: 77/85 looper letters, 13 selfloop transitions, 5 changer transitions 10/85 dead transitions. [2021-10-28 09:19:45,706 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 85 transitions, 395 flow [2021-10-28 09:19:45,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:19:45,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 09:19:45,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 716 transitions. [2021-10-28 09:19:45,711 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8423529411764706 [2021-10-28 09:19:45,711 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 716 transitions. [2021-10-28 09:19:45,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 716 transitions. [2021-10-28 09:19:45,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:19:45,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 716 transitions. [2021-10-28 09:19:45,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 71.6) internal successors, (716), 10 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:45,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:45,721 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:45,721 INFO L186 Difference]: Start difference. First operand has 107 places, 73 transitions, 246 flow. Second operand 10 states and 716 transitions. [2021-10-28 09:19:45,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 85 transitions, 395 flow [2021-10-28 09:19:45,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 85 transitions, 334 flow, removed 28 selfloop flow, removed 10 redundant places. [2021-10-28 09:19:45,736 INFO L242 Difference]: Finished difference. Result has 101 places, 73 transitions, 242 flow [2021-10-28 09:19:45,737 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=242, PETRI_PLACES=101, PETRI_TRANSITIONS=73} [2021-10-28 09:19:45,737 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 22 predicate places. [2021-10-28 09:19:45,738 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 73 transitions, 242 flow [2021-10-28 09:19:45,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.57142857142857) internal successors, (494), 7 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:45,739 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:19:45,739 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] [2021-10-28 09:19:45,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:19:45,744 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:19:45,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:45,746 INFO L85 PathProgramCache]: Analyzing trace with hash 399519110, now seen corresponding path program 1 times [2021-10-28 09:19:45,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:19:45,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600001319] [2021-10-28 09:19:45,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:45,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:19:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:46,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:46,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:19:46,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600001319] [2021-10-28 09:19:46,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600001319] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:46,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:46,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:19:46,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27445375] [2021-10-28 09:19:46,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:19:46,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:19:46,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:19:46,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:19:46,053 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2021-10-28 09:19:46,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 73 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 68.71428571428571) internal successors, (481), 7 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:46,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:19:46,054 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2021-10-28 09:19:46,055 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:19:46,465 INFO L129 PetriNetUnfolder]: 63/291 cut-off events. [2021-10-28 09:19:46,465 INFO L130 PetriNetUnfolder]: For 669/879 co-relation queries the response was YES. [2021-10-28 09:19:46,468 INFO L84 FinitePrefix]: Finished finitePrefix Result has 810 conditions, 291 events. 63/291 cut-off events. For 669/879 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1337 event pairs, 5 based on Foata normal form. 9/296 useless extension candidates. Maximal degree in co-relation 755. Up to 66 conditions per place. [2021-10-28 09:19:46,471 INFO L132 encePairwiseOnDemand]: 73/85 looper letters, 22 selfloop transitions, 14 changer transitions 27/118 dead transitions. [2021-10-28 09:19:46,471 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 118 transitions, 690 flow [2021-10-28 09:19:46,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 09:19:46,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-28 09:19:46,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1197 transitions. [2021-10-28 09:19:46,477 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8283737024221454 [2021-10-28 09:19:46,478 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1197 transitions. [2021-10-28 09:19:46,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1197 transitions. [2021-10-28 09:19:46,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:19:46,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1197 transitions. [2021-10-28 09:19:46,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 70.41176470588235) internal successors, (1197), 17 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:46,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 85.0) internal successors, (1530), 18 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:46,491 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 85.0) internal successors, (1530), 18 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:46,491 INFO L186 Difference]: Start difference. First operand has 101 places, 73 transitions, 242 flow. Second operand 17 states and 1197 transitions. [2021-10-28 09:19:46,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 118 transitions, 690 flow [2021-10-28 09:19:46,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 118 transitions, 608 flow, removed 32 selfloop flow, removed 9 redundant places. [2021-10-28 09:19:46,500 INFO L242 Difference]: Finished difference. Result has 117 places, 82 transitions, 382 flow [2021-10-28 09:19:46,501 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=382, PETRI_PLACES=117, PETRI_TRANSITIONS=82} [2021-10-28 09:19:46,501 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2021-10-28 09:19:46,502 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 82 transitions, 382 flow [2021-10-28 09:19:46,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.71428571428571) internal successors, (481), 7 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:46,502 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:19:46,503 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:46,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:19:46,503 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:19:46,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:46,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1934545734, now seen corresponding path program 1 times [2021-10-28 09:19:46,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:19:46,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312213503] [2021-10-28 09:19:46,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:46,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:19:46,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:46,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:46,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:19:46,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312213503] [2021-10-28 09:19:46,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312213503] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:46,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:46,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:19:46,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983435823] [2021-10-28 09:19:46,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:19:46,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:19:46,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:19:46,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:19:46,683 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2021-10-28 09:19:46,685 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 82 transitions, 382 flow. Second operand has 8 states, 8 states have (on average 68.625) internal successors, (549), 8 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:46,685 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:19:46,685 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2021-10-28 09:19:46,685 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:19:46,919 INFO L129 PetriNetUnfolder]: 39/209 cut-off events. [2021-10-28 09:19:46,919 INFO L130 PetriNetUnfolder]: For 1628/1983 co-relation queries the response was YES. [2021-10-28 09:19:46,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 209 events. 39/209 cut-off events. For 1628/1983 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 835 event pairs, 0 based on Foata normal form. 10/216 useless extension candidates. Maximal degree in co-relation 776. Up to 40 conditions per place. [2021-10-28 09:19:46,923 INFO L132 encePairwiseOnDemand]: 75/85 looper letters, 15 selfloop transitions, 9 changer transitions 27/106 dead transitions. [2021-10-28 09:19:46,924 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 106 transitions, 834 flow [2021-10-28 09:19:46,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:19:46,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 09:19:46,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 775 transitions. [2021-10-28 09:19:46,929 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8288770053475936 [2021-10-28 09:19:46,929 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 775 transitions. [2021-10-28 09:19:46,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 775 transitions. [2021-10-28 09:19:46,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:19:46,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 775 transitions. [2021-10-28 09:19:46,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 70.45454545454545) internal successors, (775), 11 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:46,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:46,940 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:46,940 INFO L186 Difference]: Start difference. First operand has 117 places, 82 transitions, 382 flow. Second operand 11 states and 775 transitions. [2021-10-28 09:19:46,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 106 transitions, 834 flow [2021-10-28 09:19:46,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 106 transitions, 658 flow, removed 88 selfloop flow, removed 12 redundant places. [2021-10-28 09:19:46,953 INFO L242 Difference]: Finished difference. Result has 111 places, 77 transitions, 327 flow [2021-10-28 09:19:46,953 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=327, PETRI_PLACES=111, PETRI_TRANSITIONS=77} [2021-10-28 09:19:46,954 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 32 predicate places. [2021-10-28 09:19:46,954 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 77 transitions, 327 flow [2021-10-28 09:19:46,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 68.625) internal successors, (549), 8 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:46,955 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:19:46,955 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:46,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:19:46,956 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:19:46,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:46,957 INFO L85 PathProgramCache]: Analyzing trace with hash 890490647, now seen corresponding path program 1 times [2021-10-28 09:19:46,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:19:46,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601149929] [2021-10-28 09:19:46,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:46,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:19:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:47,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:47,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:19:47,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601149929] [2021-10-28 09:19:47,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601149929] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:47,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:47,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:19:47,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232642507] [2021-10-28 09:19:47,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:19:47,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:19:47,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:19:47,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:19:47,100 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 85 [2021-10-28 09:19:47,101 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 77 transitions, 327 flow. Second operand has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:47,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:19:47,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 85 [2021-10-28 09:19:47,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:19:47,286 INFO L129 PetriNetUnfolder]: 22/139 cut-off events. [2021-10-28 09:19:47,286 INFO L130 PetriNetUnfolder]: For 576/625 co-relation queries the response was YES. [2021-10-28 09:19:47,288 INFO L84 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 139 events. 22/139 cut-off events. For 576/625 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 340 event pairs, 4 based on Foata normal form. 5/144 useless extension candidates. Maximal degree in co-relation 420. Up to 25 conditions per place. [2021-10-28 09:19:47,289 INFO L132 encePairwiseOnDemand]: 77/85 looper letters, 6 selfloop transitions, 4 changer transitions 20/88 dead transitions. [2021-10-28 09:19:47,289 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 88 transitions, 461 flow [2021-10-28 09:19:47,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:19:47,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 09:19:47,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 734 transitions. [2021-10-28 09:19:47,293 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8635294117647059 [2021-10-28 09:19:47,293 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 734 transitions. [2021-10-28 09:19:47,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 734 transitions. [2021-10-28 09:19:47,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:19:47,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 734 transitions. [2021-10-28 09:19:47,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.4) internal successors, (734), 10 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:47,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:47,302 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:47,302 INFO L186 Difference]: Start difference. First operand has 111 places, 77 transitions, 327 flow. Second operand 10 states and 734 transitions. [2021-10-28 09:19:47,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 88 transitions, 461 flow [2021-10-28 09:19:47,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 88 transitions, 390 flow, removed 24 selfloop flow, removed 12 redundant places. [2021-10-28 09:19:47,309 INFO L242 Difference]: Finished difference. Result has 110 places, 68 transitions, 252 flow [2021-10-28 09:19:47,309 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=252, PETRI_PLACES=110, PETRI_TRANSITIONS=68} [2021-10-28 09:19:47,309 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 31 predicate places. [2021-10-28 09:19:47,310 INFO L470 AbstractCegarLoop]: Abstraction has has 110 places, 68 transitions, 252 flow [2021-10-28 09:19:47,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:47,310 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:19:47,311 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:47,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:19:47,311 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:19:47,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:47,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1826053157, now seen corresponding path program 1 times [2021-10-28 09:19:47,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:19:47,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364710425] [2021-10-28 09:19:47,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:47,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:19:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:47,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:47,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:19:47,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364710425] [2021-10-28 09:19:47,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364710425] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:47,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:47,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:19:47,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066371193] [2021-10-28 09:19:47,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:19:47,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:19:47,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:19:47,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:19:47,418 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 85 [2021-10-28 09:19:47,419 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 68 transitions, 252 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 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) [2021-10-28 09:19:47,419 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:19:47,419 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 85 [2021-10-28 09:19:47,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:19:47,584 INFO L129 PetriNetUnfolder]: 106/334 cut-off events. [2021-10-28 09:19:47,585 INFO L130 PetriNetUnfolder]: For 673/694 co-relation queries the response was YES. [2021-10-28 09:19:47,588 INFO L84 FinitePrefix]: Finished finitePrefix Result has 824 conditions, 334 events. 106/334 cut-off events. For 673/694 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1603 event pairs, 14 based on Foata normal form. 8/331 useless extension candidates. Maximal degree in co-relation 760. Up to 84 conditions per place. [2021-10-28 09:19:47,590 INFO L132 encePairwiseOnDemand]: 76/85 looper letters, 10 selfloop transitions, 6 changer transitions 19/93 dead transitions. [2021-10-28 09:19:47,591 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 93 transitions, 372 flow [2021-10-28 09:19:47,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:19:47,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 09:19:47,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 676 transitions. [2021-10-28 09:19:47,594 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8836601307189542 [2021-10-28 09:19:47,595 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 676 transitions. [2021-10-28 09:19:47,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 676 transitions. [2021-10-28 09:19:47,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:19:47,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 676 transitions. [2021-10-28 09:19:47,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 75.11111111111111) internal successors, (676), 9 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:47,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:47,602 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:47,602 INFO L186 Difference]: Start difference. First operand has 110 places, 68 transitions, 252 flow. Second operand 9 states and 676 transitions. [2021-10-28 09:19:47,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 93 transitions, 372 flow [2021-10-28 09:19:47,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 93 transitions, 322 flow, removed 10 selfloop flow, removed 17 redundant places. [2021-10-28 09:19:47,609 INFO L242 Difference]: Finished difference. Result has 100 places, 71 transitions, 258 flow [2021-10-28 09:19:47,609 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=258, PETRI_PLACES=100, PETRI_TRANSITIONS=71} [2021-10-28 09:19:47,609 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 21 predicate places. [2021-10-28 09:19:47,610 INFO L470 AbstractCegarLoop]: Abstraction has has 100 places, 71 transitions, 258 flow [2021-10-28 09:19:47,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 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) [2021-10-28 09:19:47,610 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:19:47,611 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:47,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:19:47,611 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:19:47,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:47,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1631286102, now seen corresponding path program 1 times [2021-10-28 09:19:47,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:19:47,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696326632] [2021-10-28 09:19:47,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:47,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:19:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:47,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:47,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:19:47,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696326632] [2021-10-28 09:19:47,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696326632] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:47,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:47,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:19:47,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141335735] [2021-10-28 09:19:47,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:19:47,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:19:47,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:19:47,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:19:47,734 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 85 [2021-10-28 09:19:47,735 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 71 transitions, 258 flow. Second operand has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:47,735 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:19:47,735 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 85 [2021-10-28 09:19:47,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:19:47,913 INFO L129 PetriNetUnfolder]: 57/216 cut-off events. [2021-10-28 09:19:47,914 INFO L130 PetriNetUnfolder]: For 435/481 co-relation queries the response was YES. [2021-10-28 09:19:47,915 INFO L84 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 216 events. 57/216 cut-off events. For 435/481 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 805 event pairs, 4 based on Foata normal form. 14/227 useless extension candidates. Maximal degree in co-relation 643. Up to 76 conditions per place. [2021-10-28 09:19:47,917 INFO L132 encePairwiseOnDemand]: 76/85 looper letters, 10 selfloop transitions, 9 changer transitions 19/96 dead transitions. [2021-10-28 09:19:47,917 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 96 transitions, 511 flow [2021-10-28 09:19:47,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:19:47,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 09:19:47,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 750 transitions. [2021-10-28 09:19:47,920 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8823529411764706 [2021-10-28 09:19:47,921 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 750 transitions. [2021-10-28 09:19:47,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 750 transitions. [2021-10-28 09:19:47,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:19:47,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 750 transitions. [2021-10-28 09:19:47,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:47,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:47,928 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:47,929 INFO L186 Difference]: Start difference. First operand has 100 places, 71 transitions, 258 flow. Second operand 10 states and 750 transitions. [2021-10-28 09:19:47,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 96 transitions, 511 flow [2021-10-28 09:19:47,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 96 transitions, 487 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-10-28 09:19:47,934 INFO L242 Difference]: Finished difference. Result has 106 places, 74 transitions, 326 flow [2021-10-28 09:19:47,935 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=326, PETRI_PLACES=106, PETRI_TRANSITIONS=74} [2021-10-28 09:19:47,935 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 27 predicate places. [2021-10-28 09:19:47,935 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 74 transitions, 326 flow [2021-10-28 09:19:47,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:47,936 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:19:47,936 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:47,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:19:47,937 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:19:47,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:47,937 INFO L85 PathProgramCache]: Analyzing trace with hash 623859333, now seen corresponding path program 1 times [2021-10-28 09:19:47,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:19:47,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477099781] [2021-10-28 09:19:47,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:47,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:19:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:48,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:48,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:19:48,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477099781] [2021-10-28 09:19:48,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477099781] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:48,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:48,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:19:48,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548547695] [2021-10-28 09:19:48,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:19:48,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:19:48,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:19:48,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:19:48,073 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 85 [2021-10-28 09:19:48,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 74 transitions, 326 flow. Second operand has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:48,075 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:19:48,075 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 85 [2021-10-28 09:19:48,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:19:48,235 INFO L129 PetriNetUnfolder]: 16/114 cut-off events. [2021-10-28 09:19:48,236 INFO L130 PetriNetUnfolder]: For 405/445 co-relation queries the response was YES. [2021-10-28 09:19:48,237 INFO L84 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 114 events. 16/114 cut-off events. For 405/445 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 216 event pairs, 0 based on Foata normal form. 14/127 useless extension candidates. Maximal degree in co-relation 350. Up to 30 conditions per place. [2021-10-28 09:19:48,238 INFO L132 encePairwiseOnDemand]: 76/85 looper letters, 4 selfloop transitions, 12 changer transitions 13/87 dead transitions. [2021-10-28 09:19:48,238 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 87 transitions, 510 flow [2021-10-28 09:19:48,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:19:48,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 09:19:48,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 812 transitions. [2021-10-28 09:19:48,242 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8684491978609625 [2021-10-28 09:19:48,242 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 812 transitions. [2021-10-28 09:19:48,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 812 transitions. [2021-10-28 09:19:48,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:19:48,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 812 transitions. [2021-10-28 09:19:48,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 73.81818181818181) internal successors, (812), 11 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:48,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:48,252 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:48,252 INFO L186 Difference]: Start difference. First operand has 106 places, 74 transitions, 326 flow. Second operand 11 states and 812 transitions. [2021-10-28 09:19:48,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 87 transitions, 510 flow [2021-10-28 09:19:48,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 87 transitions, 369 flow, removed 53 selfloop flow, removed 17 redundant places. [2021-10-28 09:19:48,257 INFO L242 Difference]: Finished difference. Result has 101 places, 74 transitions, 270 flow [2021-10-28 09:19:48,257 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=270, PETRI_PLACES=101, PETRI_TRANSITIONS=74} [2021-10-28 09:19:48,257 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 22 predicate places. [2021-10-28 09:19:48,258 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 74 transitions, 270 flow [2021-10-28 09:19:48,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:48,258 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:19:48,258 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:48,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 09:19:48,259 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:19:48,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:48,260 INFO L85 PathProgramCache]: Analyzing trace with hash 135323022, now seen corresponding path program 1 times [2021-10-28 09:19:48,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:19:48,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175656963] [2021-10-28 09:19:48,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:48,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:19:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:48,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:48,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:19:48,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175656963] [2021-10-28 09:19:48,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175656963] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:48,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:48,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:19:48,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062261201] [2021-10-28 09:19:48,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:19:48,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:19:48,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:19:48,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:19:48,410 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2021-10-28 09:19:48,411 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 74 transitions, 270 flow. Second operand has 7 states, 7 states have (on average 69.0) internal successors, (483), 7 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:48,411 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:19:48,412 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2021-10-28 09:19:48,412 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:19:48,497 INFO L129 PetriNetUnfolder]: 5/83 cut-off events. [2021-10-28 09:19:48,497 INFO L130 PetriNetUnfolder]: For 77/83 co-relation queries the response was YES. [2021-10-28 09:19:48,498 INFO L84 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 83 events. 5/83 cut-off events. For 77/83 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 85 event pairs, 0 based on Foata normal form. 2/84 useless extension candidates. Maximal degree in co-relation 157. Up to 11 conditions per place. [2021-10-28 09:19:48,498 INFO L132 encePairwiseOnDemand]: 75/85 looper letters, 0 selfloop transitions, 0 changer transitions 72/72 dead transitions. [2021-10-28 09:19:48,498 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 72 transitions, 292 flow [2021-10-28 09:19:48,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:19:48,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 09:19:48,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 550 transitions. [2021-10-28 09:19:48,502 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8088235294117647 [2021-10-28 09:19:48,502 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 550 transitions. [2021-10-28 09:19:48,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 550 transitions. [2021-10-28 09:19:48,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:19:48,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 550 transitions. [2021-10-28 09:19:48,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 68.75) internal successors, (550), 8 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:48,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 85.0) internal successors, (765), 9 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:48,509 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 85.0) internal successors, (765), 9 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:48,510 INFO L186 Difference]: Start difference. First operand has 101 places, 74 transitions, 270 flow. Second operand 8 states and 550 transitions. [2021-10-28 09:19:48,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 72 transitions, 292 flow [2021-10-28 09:19:48,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 72 transitions, 210 flow, removed 22 selfloop flow, removed 15 redundant places. [2021-10-28 09:19:48,513 INFO L242 Difference]: Finished difference. Result has 87 places, 0 transitions, 0 flow [2021-10-28 09:19:48,514 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=87, PETRI_TRANSITIONS=0} [2021-10-28 09:19:48,515 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 8 predicate places. [2021-10-28 09:19:48,515 INFO L470 AbstractCegarLoop]: Abstraction has has 87 places, 0 transitions, 0 flow [2021-10-28 09:19:48,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.0) internal successors, (483), 7 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:48,518 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:19:48,519 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 09:19:48,519 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 09:19:48,520 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-28 09:19:48,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 09:19:48,524 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:48,529 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 09:19:48,529 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:19:48,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:19:48 BasicIcfg [2021-10-28 09:19:48,532 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:19:48,534 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:19:48,534 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:19:48,534 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:19:48,535 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:19:42" (3/4) ... [2021-10-28 09:19:48,538 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:19:48,545 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-28 09:19:48,545 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-28 09:19:48,545 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-28 09:19:48,552 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-28 09:19:48,553 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:19:48,553 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:19:48,553 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:19:48,618 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065814f0-05c4-4be3-9405-d97519aee341/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:19:48,618 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:19:48,620 INFO L168 Benchmark]: Toolchain (without parser) took 7117.32 ms. Allocated memory was 100.7 MB in the beginning and 163.6 MB in the end (delta: 62.9 MB). Free memory was 70.5 MB in the beginning and 56.9 MB in the end (delta: 13.6 MB). Peak memory consumption was 75.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:19:48,620 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 100.7 MB. Free memory is still 53.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:19:48,622 INFO L168 Benchmark]: CACSL2BoogieTranslator took 683.97 ms. Allocated memory was 100.7 MB in the beginning and 136.3 MB in the end (delta: 35.7 MB). Free memory was 70.5 MB in the beginning and 100.5 MB in the end (delta: -30.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:19:48,622 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.28 ms. Allocated memory is still 136.3 MB. Free memory was 100.5 MB in the beginning and 99.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:19:48,622 INFO L168 Benchmark]: Boogie Preprocessor took 56.31 ms. Allocated memory is still 136.3 MB. Free memory was 99.0 MB in the beginning and 97.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:19:48,623 INFO L168 Benchmark]: RCFGBuilder took 507.24 ms. Allocated memory is still 136.3 MB. Free memory was 97.3 MB in the beginning and 85.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:19:48,623 INFO L168 Benchmark]: TraceAbstraction took 5692.54 ms. Allocated memory was 136.3 MB in the beginning and 163.6 MB in the end (delta: 27.3 MB). Free memory was 84.7 MB in the beginning and 60.0 MB in the end (delta: 24.7 MB). Peak memory consumption was 54.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:19:48,624 INFO L168 Benchmark]: Witness Printer took 84.48 ms. Allocated memory is still 163.6 MB. Free memory was 60.0 MB in the beginning and 56.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:19:48,626 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 100.7 MB. Free memory is still 53.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 683.97 ms. Allocated memory was 100.7 MB in the beginning and 136.3 MB in the end (delta: 35.7 MB). Free memory was 70.5 MB in the beginning and 100.5 MB in the end (delta: -30.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.28 ms. Allocated memory is still 136.3 MB. Free memory was 100.5 MB in the beginning and 99.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.31 ms. Allocated memory is still 136.3 MB. Free memory was 99.0 MB in the beginning and 97.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 507.24 ms. Allocated memory is still 136.3 MB. Free memory was 97.3 MB in the beginning and 85.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5692.54 ms. Allocated memory was 136.3 MB in the beginning and 163.6 MB in the end (delta: 27.3 MB). Free memory was 84.7 MB in the beginning and 60.0 MB in the end (delta: 24.7 MB). Peak memory consumption was 54.7 MB. Max. memory is 16.1 GB. * Witness Printer took 84.48 ms. Allocated memory is still 163.6 MB. Free memory was 60.0 MB in the beginning and 56.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.4s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 115 SDtfs, 285 SDslu, 364 SDs, 0 SdLazy, 362 SolverSat, 63 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=382occurred in iteration=4, InterpolantAutomatonStates: 112, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 560 NumberOfCodeBlocks, 560 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 550 ConstructedInterpolants, 0 QuantifiedInterpolants, 2180 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 09:19:48,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065814f0-05c4-4be3-9405-d97519aee341/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...