./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf32370-66f8-40cb-a2bd-e128a819096f/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf32370-66f8-40cb-a2bd-e128a819096f/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf32370-66f8-40cb-a2bd-e128a819096f/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf32370-66f8-40cb-a2bd-e128a819096f/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf32370-66f8-40cb-a2bd-e128a819096f/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf32370-66f8-40cb-a2bd-e128a819096f/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 02:49:39,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:49:39,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:49:39,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:49:39,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:49:39,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:49:39,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:49:39,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:49:39,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:49:39,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:49:39,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:49:39,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:49:39,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:49:39,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:49:39,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:49:39,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:49:39,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:49:39,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:49:39,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:49:39,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:49:39,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:49:39,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:49:39,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:49:39,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:49:39,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:49:39,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:49:39,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:49:39,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:49:39,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:49:39,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:49:39,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:49:39,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:49:39,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:49:39,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:49:39,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:49:39,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:49:39,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:49:39,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:49:39,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:49:39,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:49:39,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:49:39,700 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf32370-66f8-40cb-a2bd-e128a819096f/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-23 02:49:39,737 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:49:39,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:49:39,738 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:49:39,739 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:49:39,740 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:49:39,740 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:49:39,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:49:39,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:49:39,742 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:49:39,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:49:39,754 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:49:39,755 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 02:49:39,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:49:39,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:49:39,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:49:39,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:49:39,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:49:39,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:49:39,757 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 02:49:39,757 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:49:39,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:49:39,757 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:49:39,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:49:39,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:49:39,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:49:39,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:49:39,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:49:39,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:49:39,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:49:39,760 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:49:39,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:49:39,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:49:39,761 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:49:39,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:49:39,762 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:49:39,762 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:49:39,762 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8cf32370-66f8-40cb-a2bd-e128a819096f/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf32370-66f8-40cb-a2bd-e128a819096f/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 [2022-11-23 02:49:40,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:49:40,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:49:40,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:49:40,143 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:49:40,143 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:49:40,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf32370-66f8-40cb-a2bd-e128a819096f/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i [2022-11-23 02:49:43,110 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:49:43,358 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:49:43,364 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf32370-66f8-40cb-a2bd-e128a819096f/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i [2022-11-23 02:49:43,377 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf32370-66f8-40cb-a2bd-e128a819096f/bin/uautomizer-QkZJyEgLgS/data/fbc8002d2/110cd311803342fca3b78837bd57c560/FLAG9449ab47f [2022-11-23 02:49:43,394 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf32370-66f8-40cb-a2bd-e128a819096f/bin/uautomizer-QkZJyEgLgS/data/fbc8002d2/110cd311803342fca3b78837bd57c560 [2022-11-23 02:49:43,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:49:43,398 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:49:43,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:49:43,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:49:43,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:49:43,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:49:43" (1/1) ... [2022-11-23 02:49:43,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bc70a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:43, skipping insertion in model container [2022-11-23 02:49:43,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:49:43" (1/1) ... [2022-11-23 02:49:43,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:49:43,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:49:43,830 WARN L237 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_8cf32370-66f8-40cb-a2bd-e128a819096f/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i[30176,30189] [2022-11-23 02:49:43,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:49:43,888 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:49:43,952 WARN L237 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_8cf32370-66f8-40cb-a2bd-e128a819096f/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i[30176,30189] [2022-11-23 02:49:43,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:49:44,010 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:49:44,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:44 WrapperNode [2022-11-23 02:49:44,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:49:44,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:49:44,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:49:44,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:49:44,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:44" (1/1) ... [2022-11-23 02:49:44,038 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:44" (1/1) ... [2022-11-23 02:49:44,083 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 89 [2022-11-23 02:49:44,083 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:49:44,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:49:44,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:49:44,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:49:44,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:44" (1/1) ... [2022-11-23 02:49:44,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:44" (1/1) ... [2022-11-23 02:49:44,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:44" (1/1) ... [2022-11-23 02:49:44,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:44" (1/1) ... [2022-11-23 02:49:44,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:44" (1/1) ... [2022-11-23 02:49:44,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:44" (1/1) ... [2022-11-23 02:49:44,118 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:44" (1/1) ... [2022-11-23 02:49:44,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:44" (1/1) ... [2022-11-23 02:49:44,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:49:44,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:49:44,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:49:44,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:49:44,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:44" (1/1) ... [2022-11-23 02:49:44,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:49:44,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf32370-66f8-40cb-a2bd-e128a819096f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:49:44,171 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf32370-66f8-40cb-a2bd-e128a819096f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:49:44,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf32370-66f8-40cb-a2bd-e128a819096f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:49:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 02:49:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 02:49:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-23 02:49:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:49:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:49:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-23 02:49:44,219 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-23 02:49:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:49:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:49:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:49:44,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:49:44,221 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 02:49:44,406 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:49:44,408 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:49:44,757 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:49:44,765 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:49:44,765 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-23 02:49:44,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:49:44 BoogieIcfgContainer [2022-11-23 02:49:44,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:49:44,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:49:44,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:49:44,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:49:44,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:49:43" (1/3) ... [2022-11-23 02:49:44,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@415b83d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:49:44, skipping insertion in model container [2022-11-23 02:49:44,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:44" (2/3) ... [2022-11-23 02:49:44,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@415b83d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:49:44, skipping insertion in model container [2022-11-23 02:49:44,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:49:44" (3/3) ... [2022-11-23 02:49:44,779 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_24-sound_lock_racing.i [2022-11-23 02:49:44,789 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 02:49:44,801 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:49:44,802 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-23 02:49:44,802 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 02:49:44,902 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-23 02:49:44,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 134 transitions, 276 flow [2022-11-23 02:49:45,048 INFO L130 PetriNetUnfolder]: 18/169 cut-off events. [2022-11-23 02:49:45,048 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 02:49:45,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 169 events. 18/169 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 373 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 80. Up to 4 conditions per place. [2022-11-23 02:49:45,056 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 134 transitions, 276 flow [2022-11-23 02:49:45,062 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 131 transitions, 270 flow [2022-11-23 02:49:45,066 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:49:45,084 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 131 transitions, 270 flow [2022-11-23 02:49:45,087 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 131 transitions, 270 flow [2022-11-23 02:49:45,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 131 transitions, 270 flow [2022-11-23 02:49:45,139 INFO L130 PetriNetUnfolder]: 17/166 cut-off events. [2022-11-23 02:49:45,139 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 02:49:45,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 166 events. 17/166 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 371 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 80. Up to 4 conditions per place. [2022-11-23 02:49:45,144 INFO L119 LiptonReduction]: Number of co-enabled transitions 3240 [2022-11-23 02:49:50,681 INFO L134 LiptonReduction]: Checked pairs total: 5190 [2022-11-23 02:49:50,682 INFO L136 LiptonReduction]: Total number of compositions: 129 [2022-11-23 02:49:50,701 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:49:50,708 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7c2f50f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:49:50,708 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-23 02:49:50,713 INFO L130 PetriNetUnfolder]: 1/9 cut-off events. [2022-11-23 02:49:50,713 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:49:50,713 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:49:50,714 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-23 02:49:50,715 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-23 02:49:50,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:49:50,721 INFO L85 PathProgramCache]: Analyzing trace with hash 15992131, now seen corresponding path program 1 times [2022-11-23 02:49:50,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:49:50,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389461780] [2022-11-23 02:49:50,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:49:50,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:49:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:49:51,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:49:51,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:49:51,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389461780] [2022-11-23 02:49:51,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389461780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:49:51,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:49:51,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:49:51,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382114270] [2022-11-23 02:49:51,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:49:51,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:49:51,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:49:51,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:49:51,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:49:51,130 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 263 [2022-11-23 02:49:51,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 38 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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) [2022-11-23 02:49:51,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:49:51,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 263 [2022-11-23 02:49:51,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:49:51,312 INFO L130 PetriNetUnfolder]: 96/237 cut-off events. [2022-11-23 02:49:51,312 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 02:49:51,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 237 events. 96/237 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1085 event pairs, 24 based on Foata normal form. 9/182 useless extension candidates. Maximal degree in co-relation 438. Up to 154 conditions per place. [2022-11-23 02:49:51,320 INFO L137 encePairwiseOnDemand]: 249/263 looper letters, 35 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2022-11-23 02:49:51,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 41 transitions, 166 flow [2022-11-23 02:49:51,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:49:51,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:49:51,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2022-11-23 02:49:51,347 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5069708491761724 [2022-11-23 02:49:51,348 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2022-11-23 02:49:51,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2022-11-23 02:49:51,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:49:51,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2022-11-23 02:49:51,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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) [2022-11-23 02:49:51,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 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) [2022-11-23 02:49:51,373 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 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) [2022-11-23 02:49:51,374 INFO L175 Difference]: Start difference. First operand has 33 places, 38 transitions, 84 flow. Second operand 3 states and 400 transitions. [2022-11-23 02:49:51,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 41 transitions, 166 flow [2022-11-23 02:49:51,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 166 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:49:51,381 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 82 flow [2022-11-23 02:49:51,383 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2022-11-23 02:49:51,387 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2022-11-23 02:49:51,387 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 82 flow [2022-11-23 02:49:51,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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) [2022-11-23 02:49:51,388 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:49:51,389 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-23 02:49:51,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:49:51,389 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-23 02:49:51,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:49:51,390 INFO L85 PathProgramCache]: Analyzing trace with hash 15992132, now seen corresponding path program 1 times [2022-11-23 02:49:51,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:49:51,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733564279] [2022-11-23 02:49:51,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:49:51,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:49:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:49:51,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:49:51,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:49:51,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733564279] [2022-11-23 02:49:51,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733564279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:49:51,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:49:51,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:49:51,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448511170] [2022-11-23 02:49:51,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:49:51,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:49:51,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:49:51,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:49:51,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:49:51,607 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 263 [2022-11-23 02:49:51,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 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) [2022-11-23 02:49:51,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:49:51,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 263 [2022-11-23 02:49:51,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:49:51,722 INFO L130 PetriNetUnfolder]: 84/220 cut-off events. [2022-11-23 02:49:51,723 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-11-23 02:49:51,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 220 events. 84/220 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1034 event pairs, 0 based on Foata normal form. 13/200 useless extension candidates. Maximal degree in co-relation 453. Up to 179 conditions per place. [2022-11-23 02:49:51,729 INFO L137 encePairwiseOnDemand]: 260/263 looper letters, 35 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2022-11-23 02:49:51,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 178 flow [2022-11-23 02:49:51,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:49:51,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:49:51,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2022-11-23 02:49:51,732 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4892268694550063 [2022-11-23 02:49:51,732 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2022-11-23 02:49:51,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2022-11-23 02:49:51,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:49:51,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2022-11-23 02:49:51,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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) [2022-11-23 02:49:51,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 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) [2022-11-23 02:49:51,740 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 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) [2022-11-23 02:49:51,741 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 82 flow. Second operand 3 states and 386 transitions. [2022-11-23 02:49:51,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 178 flow [2022-11-23 02:49:51,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:49:51,747 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 78 flow [2022-11-23 02:49:51,747 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2022-11-23 02:49:51,751 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2022-11-23 02:49:51,752 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 78 flow [2022-11-23 02:49:51,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 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) [2022-11-23 02:49:51,752 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:49:51,753 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 02:49:51,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:49:51,754 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-23 02:49:51,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:49:51,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1811450492, now seen corresponding path program 1 times [2022-11-23 02:49:51,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:49:51,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401453744] [2022-11-23 02:49:51,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:49:51,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:49:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:49:51,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:49:51,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:49:51,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401453744] [2022-11-23 02:49:51,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401453744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:49:51,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:49:51,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:49:51,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289976622] [2022-11-23 02:49:51,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:49:51,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:49:51,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:49:51,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:49:51,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:49:51,865 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 263 [2022-11-23 02:49:51,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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) [2022-11-23 02:49:51,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:49:51,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 263 [2022-11-23 02:49:51,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:49:51,952 INFO L130 PetriNetUnfolder]: 77/212 cut-off events. [2022-11-23 02:49:51,952 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2022-11-23 02:49:51,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 212 events. 77/212 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 884 event pairs, 14 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 432. Up to 119 conditions per place. [2022-11-23 02:49:51,954 INFO L137 encePairwiseOnDemand]: 255/263 looper letters, 34 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2022-11-23 02:49:51,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 41 transitions, 191 flow [2022-11-23 02:49:51,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:49:51,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:49:51,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2022-11-23 02:49:51,957 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4968314321926489 [2022-11-23 02:49:51,957 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2022-11-23 02:49:51,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2022-11-23 02:49:51,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:49:51,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2022-11-23 02:49:51,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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) [2022-11-23 02:49:51,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 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) [2022-11-23 02:49:51,961 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 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) [2022-11-23 02:49:51,961 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 78 flow. Second operand 3 states and 392 transitions. [2022-11-23 02:49:51,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 41 transitions, 191 flow [2022-11-23 02:49:51,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 41 transitions, 185 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:49:51,964 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 98 flow [2022-11-23 02:49:51,964 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2022-11-23 02:49:51,965 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2022-11-23 02:49:51,965 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 98 flow [2022-11-23 02:49:51,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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) [2022-11-23 02:49:51,966 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:49:51,966 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-11-23 02:49:51,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 02:49:51,966 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-23 02:49:51,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:49:51,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1811415154, now seen corresponding path program 1 times [2022-11-23 02:49:51,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:49:51,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370428079] [2022-11-23 02:49:51,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:49:51,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:49:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:49:51,986 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 02:49:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:49:52,027 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 02:49:52,028 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 02:49:52,029 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-23 02:49:52,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-23 02:49:52,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-23 02:49:52,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-23 02:49:52,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-23 02:49:52,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-23 02:49:52,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-23 02:49:52,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-23 02:49:52,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-23 02:49:52,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-23 02:49:52,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-23 02:49:52,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-23 02:49:52,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-23 02:49:52,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 02:49:52,037 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-23 02:49:52,042 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 02:49:52,043 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-23 02:49:52,086 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-23 02:49:52,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 172 transitions, 362 flow [2022-11-23 02:49:52,163 INFO L130 PetriNetUnfolder]: 32/279 cut-off events. [2022-11-23 02:49:52,163 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-23 02:49:52,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 279 events. 32/279 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 793 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 171. Up to 8 conditions per place. [2022-11-23 02:49:52,165 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 172 transitions, 362 flow [2022-11-23 02:49:52,169 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 172 transitions, 362 flow [2022-11-23 02:49:52,169 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:49:52,169 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 172 transitions, 362 flow [2022-11-23 02:49:52,174 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 172 transitions, 362 flow [2022-11-23 02:49:52,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 172 transitions, 362 flow [2022-11-23 02:49:52,216 INFO L130 PetriNetUnfolder]: 32/279 cut-off events. [2022-11-23 02:49:52,216 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-23 02:49:52,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 279 events. 32/279 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 793 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 171. Up to 8 conditions per place. [2022-11-23 02:49:52,226 INFO L119 LiptonReduction]: Number of co-enabled transitions 10440 [2022-11-23 02:49:59,515 INFO L134 LiptonReduction]: Checked pairs total: 24976 [2022-11-23 02:49:59,516 INFO L136 LiptonReduction]: Total number of compositions: 161 [2022-11-23 02:49:59,518 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:49:59,520 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7c2f50f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:49:59,520 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-23 02:49:59,523 INFO L130 PetriNetUnfolder]: 1/12 cut-off events. [2022-11-23 02:49:59,523 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:49:59,523 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:49:59,524 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 02:49:59,524 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 02:49:59,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:49:59,525 INFO L85 PathProgramCache]: Analyzing trace with hash 849791391, now seen corresponding path program 1 times [2022-11-23 02:49:59,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:49:59,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805811218] [2022-11-23 02:49:59,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:49:59,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:49:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:49:59,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:49:59,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:49:59,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805811218] [2022-11-23 02:49:59,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805811218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:49:59,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:49:59,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:49:59,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692527887] [2022-11-23 02:49:59,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:49:59,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:49:59,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:49:59,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:49:59,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:49:59,577 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 333 [2022-11-23 02:49:59,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 66 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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) [2022-11-23 02:49:59,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:49:59,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 333 [2022-11-23 02:49:59,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:50:00,290 INFO L130 PetriNetUnfolder]: 3707/6254 cut-off events. [2022-11-23 02:50:00,291 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2022-11-23 02:50:00,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12283 conditions, 6254 events. 3707/6254 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 42564 event pairs, 936 based on Foata normal form. 452/4945 useless extension candidates. Maximal degree in co-relation 8166. Up to 4374 conditions per place. [2022-11-23 02:50:00,331 INFO L137 encePairwiseOnDemand]: 314/333 looper letters, 67 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2022-11-23 02:50:00,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 78 transitions, 314 flow [2022-11-23 02:50:00,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:50:00,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:50:00,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 533 transitions. [2022-11-23 02:50:00,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5335335335335335 [2022-11-23 02:50:00,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 533 transitions. [2022-11-23 02:50:00,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 533 transitions. [2022-11-23 02:50:00,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:50:00,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 533 transitions. [2022-11-23 02:50:00,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 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) [2022-11-23 02:50:00,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-11-23 02:50:00,342 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-11-23 02:50:00,342 INFO L175 Difference]: Start difference. First operand has 55 places, 66 transitions, 150 flow. Second operand 3 states and 533 transitions. [2022-11-23 02:50:00,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 78 transitions, 314 flow [2022-11-23 02:50:00,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 78 transitions, 314 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:50:00,348 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 138 flow [2022-11-23 02:50:00,348 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2022-11-23 02:50:00,351 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2022-11-23 02:50:00,351 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 138 flow [2022-11-23 02:50:00,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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) [2022-11-23 02:50:00,352 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:50:00,352 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 02:50:00,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 02:50:00,353 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 02:50:00,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:50:00,353 INFO L85 PathProgramCache]: Analyzing trace with hash 849791390, now seen corresponding path program 1 times [2022-11-23 02:50:00,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:50:00,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548012670] [2022-11-23 02:50:00,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:50:00,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:50:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:50:00,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:50:00,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:50:00,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548012670] [2022-11-23 02:50:00,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548012670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:50:00,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:50:00,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:50:00,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626686309] [2022-11-23 02:50:00,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:50:00,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:50:00,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:50:00,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:50:00,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:50:00,488 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 333 [2022-11-23 02:50:00,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 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) [2022-11-23 02:50:00,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:50:00,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 333 [2022-11-23 02:50:00,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:50:01,314 INFO L130 PetriNetUnfolder]: 3694/6254 cut-off events. [2022-11-23 02:50:01,315 INFO L131 PetriNetUnfolder]: For 1432/1432 co-relation queries the response was YES. [2022-11-23 02:50:01,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13329 conditions, 6254 events. 3694/6254 cut-off events. For 1432/1432 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 41513 event pairs, 1716 based on Foata normal form. 13/4923 useless extension candidates. Maximal degree in co-relation 1472. Up to 5899 conditions per place. [2022-11-23 02:50:01,357 INFO L137 encePairwiseOnDemand]: 330/333 looper letters, 56 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2022-11-23 02:50:01,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 66 transitions, 286 flow [2022-11-23 02:50:01,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:50:01,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:50:01,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2022-11-23 02:50:01,360 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4974974974974975 [2022-11-23 02:50:01,360 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2022-11-23 02:50:01,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2022-11-23 02:50:01,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:50:01,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2022-11-23 02:50:01,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 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) [2022-11-23 02:50:01,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-11-23 02:50:01,365 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-11-23 02:50:01,365 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 138 flow. Second operand 3 states and 497 transitions. [2022-11-23 02:50:01,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 66 transitions, 286 flow [2022-11-23 02:50:01,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 278 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:50:01,369 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 146 flow [2022-11-23 02:50:01,369 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2022-11-23 02:50:01,370 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 4 predicate places. [2022-11-23 02:50:01,370 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 146 flow [2022-11-23 02:50:01,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 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) [2022-11-23 02:50:01,371 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:50:01,371 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:50:01,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 02:50:01,372 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 02:50:01,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:50:01,372 INFO L85 PathProgramCache]: Analyzing trace with hash 613200917, now seen corresponding path program 1 times [2022-11-23 02:50:01,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:50:01,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518774095] [2022-11-23 02:50:01,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:50:01,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:50:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:50:01,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:50:01,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:50:01,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518774095] [2022-11-23 02:50:01,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518774095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:50:01,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:50:01,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:50:01,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946922387] [2022-11-23 02:50:01,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:50:01,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:50:01,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:50:01,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:50:01,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:50:01,465 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 333 [2022-11-23 02:50:01,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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) [2022-11-23 02:50:01,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:50:01,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 333 [2022-11-23 02:50:01,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:50:02,331 INFO L130 PetriNetUnfolder]: 4143/7403 cut-off events. [2022-11-23 02:50:02,331 INFO L131 PetriNetUnfolder]: For 1047/1047 co-relation queries the response was YES. [2022-11-23 02:50:02,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15485 conditions, 7403 events. 4143/7403 cut-off events. For 1047/1047 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 53170 event pairs, 1409 based on Foata normal form. 62/5928 useless extension candidates. Maximal degree in co-relation 15382. Up to 5083 conditions per place. [2022-11-23 02:50:02,424 INFO L137 encePairwiseOnDemand]: 319/333 looper letters, 73 selfloop transitions, 6 changer transitions 0/87 dead transitions. [2022-11-23 02:50:02,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 87 transitions, 398 flow [2022-11-23 02:50:02,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:50:02,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:50:02,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 519 transitions. [2022-11-23 02:50:02,427 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5195195195195195 [2022-11-23 02:50:02,427 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 519 transitions. [2022-11-23 02:50:02,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 519 transitions. [2022-11-23 02:50:02,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:50:02,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 519 transitions. [2022-11-23 02:50:02,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:50:02,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-11-23 02:50:02,432 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-11-23 02:50:02,432 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 146 flow. Second operand 3 states and 519 transitions. [2022-11-23 02:50:02,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 87 transitions, 398 flow [2022-11-23 02:50:02,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 87 transitions, 395 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:50:02,436 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 204 flow [2022-11-23 02:50:02,436 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2022-11-23 02:50:02,437 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2022-11-23 02:50:02,437 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 204 flow [2022-11-23 02:50:02,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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) [2022-11-23 02:50:02,438 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:50:02,438 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-23 02:50:02,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 02:50:02,438 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 02:50:02,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:50:02,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1967368440, now seen corresponding path program 1 times [2022-11-23 02:50:02,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:50:02,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294880770] [2022-11-23 02:50:02,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:50:02,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:50:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:50:02,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:50:02,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:50:02,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294880770] [2022-11-23 02:50:02,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294880770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:50:02,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:50:02,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:50:02,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604791974] [2022-11-23 02:50:02,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:50:02,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:50:02,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:50:02,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:50:02,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:50:02,493 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 333 [2022-11-23 02:50:02,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 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) [2022-11-23 02:50:02,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:50:02,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 333 [2022-11-23 02:50:02,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:50:03,422 INFO L130 PetriNetUnfolder]: 3815/6882 cut-off events. [2022-11-23 02:50:03,423 INFO L131 PetriNetUnfolder]: For 2413/2413 co-relation queries the response was YES. [2022-11-23 02:50:03,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16489 conditions, 6882 events. 3815/6882 cut-off events. For 2413/2413 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 48281 event pairs, 3512 based on Foata normal form. 178/6034 useless extension candidates. Maximal degree in co-relation 12123. Up to 6512 conditions per place. [2022-11-23 02:50:03,469 INFO L137 encePairwiseOnDemand]: 331/333 looper letters, 48 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2022-11-23 02:50:03,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 298 flow [2022-11-23 02:50:03,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:50:03,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:50:03,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 481 transitions. [2022-11-23 02:50:03,472 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2022-11-23 02:50:03,473 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 481 transitions. [2022-11-23 02:50:03,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 481 transitions. [2022-11-23 02:50:03,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:50:03,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 481 transitions. [2022-11-23 02:50:03,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 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) [2022-11-23 02:50:03,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-11-23 02:50:03,478 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-11-23 02:50:03,478 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 204 flow. Second operand 3 states and 481 transitions. [2022-11-23 02:50:03,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 298 flow [2022-11-23 02:50:03,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 57 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:50:03,488 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 190 flow [2022-11-23 02:50:03,489 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2022-11-23 02:50:03,489 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2022-11-23 02:50:03,489 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 190 flow [2022-11-23 02:50:03,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 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) [2022-11-23 02:50:03,490 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:50:03,490 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:50:03,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 02:50:03,491 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 02:50:03,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:50:03,491 INFO L85 PathProgramCache]: Analyzing trace with hash -442783611, now seen corresponding path program 1 times [2022-11-23 02:50:03,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:50:03,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770363223] [2022-11-23 02:50:03,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:50:03,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:50:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:50:03,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:50:03,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:50:03,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770363223] [2022-11-23 02:50:03,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770363223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:50:03,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:50:03,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:50:03,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971703306] [2022-11-23 02:50:03,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:50:03,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:50:03,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:50:03,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:50:03,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:50:03,584 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 333 [2022-11-23 02:50:03,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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) [2022-11-23 02:50:03,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:50:03,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 333 [2022-11-23 02:50:03,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:50:04,584 INFO L130 PetriNetUnfolder]: 4589/8203 cut-off events. [2022-11-23 02:50:04,584 INFO L131 PetriNetUnfolder]: For 2014/2014 co-relation queries the response was YES. [2022-11-23 02:50:04,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19143 conditions, 8203 events. 4589/8203 cut-off events. For 2014/2014 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 59566 event pairs, 2193 based on Foata normal form. 87/7185 useless extension candidates. Maximal degree in co-relation 19129. Up to 5374 conditions per place. [2022-11-23 02:50:04,633 INFO L137 encePairwiseOnDemand]: 322/333 looper letters, 69 selfloop transitions, 11 changer transitions 0/88 dead transitions. [2022-11-23 02:50:04,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 88 transitions, 442 flow [2022-11-23 02:50:04,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:50:04,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:50:04,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2022-11-23 02:50:04,636 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5105105105105106 [2022-11-23 02:50:04,636 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 510 transitions. [2022-11-23 02:50:04,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 510 transitions. [2022-11-23 02:50:04,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:50:04,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 510 transitions. [2022-11-23 02:50:04,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 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) [2022-11-23 02:50:04,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-11-23 02:50:04,641 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-11-23 02:50:04,641 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 190 flow. Second operand 3 states and 510 transitions. [2022-11-23 02:50:04,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 88 transitions, 442 flow [2022-11-23 02:50:04,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 88 transitions, 441 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:50:04,646 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 279 flow [2022-11-23 02:50:04,646 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=279, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2022-11-23 02:50:04,649 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2022-11-23 02:50:04,649 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 279 flow [2022-11-23 02:50:04,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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) [2022-11-23 02:50:04,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:50:04,650 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:50:04,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 02:50:04,650 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 02:50:04,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:50:04,651 INFO L85 PathProgramCache]: Analyzing trace with hash -442783686, now seen corresponding path program 1 times [2022-11-23 02:50:04,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:50:04,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208730366] [2022-11-23 02:50:04,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:50:04,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:50:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:50:04,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:50:04,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:50:04,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208730366] [2022-11-23 02:50:04,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208730366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:50:04,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:50:04,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:50:04,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575515532] [2022-11-23 02:50:04,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:50:04,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:50:04,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:50:04,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:50:04,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:50:04,834 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 333 [2022-11-23 02:50:04,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 279 flow. Second operand has 5 states, 5 states have (on average 142.8) internal successors, (714), 5 states have internal predecessors, (714), 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) [2022-11-23 02:50:04,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:50:04,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 333 [2022-11-23 02:50:04,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:50:06,276 INFO L130 PetriNetUnfolder]: 4868/8698 cut-off events. [2022-11-23 02:50:06,277 INFO L131 PetriNetUnfolder]: For 6482/6482 co-relation queries the response was YES. [2022-11-23 02:50:06,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22733 conditions, 8698 events. 4868/8698 cut-off events. For 6482/6482 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 63798 event pairs, 863 based on Foata normal form. 286/8009 useless extension candidates. Maximal degree in co-relation 22716. Up to 4502 conditions per place. [2022-11-23 02:50:06,330 INFO L137 encePairwiseOnDemand]: 317/333 looper letters, 163 selfloop transitions, 31 changer transitions 0/202 dead transitions. [2022-11-23 02:50:06,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 202 transitions, 1154 flow [2022-11-23 02:50:06,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:50:06,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 02:50:06,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1172 transitions. [2022-11-23 02:50:06,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5027885027885027 [2022-11-23 02:50:06,335 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1172 transitions. [2022-11-23 02:50:06,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1172 transitions. [2022-11-23 02:50:06,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:50:06,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1172 transitions. [2022-11-23 02:50:06,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 167.42857142857142) internal successors, (1172), 7 states have internal predecessors, (1172), 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) [2022-11-23 02:50:06,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 333.0) internal successors, (2664), 8 states have internal predecessors, (2664), 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) [2022-11-23 02:50:06,345 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 333.0) internal successors, (2664), 8 states have internal predecessors, (2664), 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) [2022-11-23 02:50:06,345 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 279 flow. Second operand 7 states and 1172 transitions. [2022-11-23 02:50:06,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 202 transitions, 1154 flow [2022-11-23 02:50:06,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 202 transitions, 1108 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:50:06,363 INFO L231 Difference]: Finished difference. Result has 73 places, 89 transitions, 544 flow [2022-11-23 02:50:06,363 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=544, PETRI_PLACES=73, PETRI_TRANSITIONS=89} [2022-11-23 02:50:06,364 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2022-11-23 02:50:06,364 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 89 transitions, 544 flow [2022-11-23 02:50:06,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.8) internal successors, (714), 5 states have internal predecessors, (714), 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) [2022-11-23 02:50:06,365 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:50:06,365 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-23 02:50:06,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 02:50:06,365 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-23 02:50:06,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:50:06,366 INFO L85 PathProgramCache]: Analyzing trace with hash -855426826, now seen corresponding path program 1 times [2022-11-23 02:50:06,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:50:06,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004329623] [2022-11-23 02:50:06,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:50:06,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:50:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:50:06,389 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 02:50:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:50:06,419 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 02:50:06,419 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 02:50:06,420 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-23 02:50:06,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-23 02:50:06,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-23 02:50:06,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-23 02:50:06,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-23 02:50:06,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-23 02:50:06,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-23 02:50:06,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-23 02:50:06,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-23 02:50:06,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-23 02:50:06,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-23 02:50:06,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-23 02:50:06,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-23 02:50:06,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-23 02:50:06,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-23 02:50:06,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-23 02:50:06,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-23 02:50:06,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 02:50:06,426 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:50:06,427 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 02:50:06,427 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-23 02:50:06,468 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-23 02:50:06,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 210 transitions, 450 flow [2022-11-23 02:50:06,536 INFO L130 PetriNetUnfolder]: 51/430 cut-off events. [2022-11-23 02:50:06,537 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-23 02:50:06,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 430 events. 51/430 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1399 event pairs, 1 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 287. Up to 16 conditions per place. [2022-11-23 02:50:06,541 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 210 transitions, 450 flow [2022-11-23 02:50:06,546 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 190 places, 210 transitions, 450 flow [2022-11-23 02:50:06,546 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:50:06,547 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 190 places, 210 transitions, 450 flow [2022-11-23 02:50:06,547 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 190 places, 210 transitions, 450 flow [2022-11-23 02:50:06,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 210 transitions, 450 flow [2022-11-23 02:50:06,602 INFO L130 PetriNetUnfolder]: 51/430 cut-off events. [2022-11-23 02:50:06,602 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-23 02:50:06,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 430 events. 51/430 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1399 event pairs, 1 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 287. Up to 16 conditions per place. [2022-11-23 02:50:06,623 INFO L119 LiptonReduction]: Number of co-enabled transitions 19872 [2022-11-23 02:50:14,145 INFO L134 LiptonReduction]: Checked pairs total: 52971 [2022-11-23 02:50:14,145 INFO L136 LiptonReduction]: Total number of compositions: 191 [2022-11-23 02:50:14,147 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:50:14,148 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7c2f50f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:50:14,148 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-23 02:50:14,150 INFO L130 PetriNetUnfolder]: 1/12 cut-off events. [2022-11-23 02:50:14,150 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:50:14,151 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:50:14,151 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 02:50:14,151 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-23 02:50:14,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:50:14,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1268162177, now seen corresponding path program 1 times [2022-11-23 02:50:14,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:50:14,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570748330] [2022-11-23 02:50:14,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:50:14,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:50:14,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:50:14,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:50:14,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:50:14,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570748330] [2022-11-23 02:50:14,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570748330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:50:14,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:50:14,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:50:14,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890473741] [2022-11-23 02:50:14,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:50:14,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:50:14,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:50:14,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:50:14,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:50:14,209 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 401 [2022-11-23 02:50:14,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 89 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:50:14,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:50:14,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 401 [2022-11-23 02:50:14,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:50:24,163 INFO L130 PetriNetUnfolder]: 91371/131311 cut-off events. [2022-11-23 02:50:24,163 INFO L131 PetriNetUnfolder]: For 2441/2441 co-relation queries the response was YES. [2022-11-23 02:50:24,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259940 conditions, 131311 events. 91371/131311 cut-off events. For 2441/2441 co-relation queries the response was YES. Maximal size of possible extension queue 3518. Compared 986135 event pairs, 59320 based on Foata normal form. 11992/100629 useless extension candidates. Maximal degree in co-relation 22718. Up to 126980 conditions per place. [2022-11-23 02:50:25,143 INFO L137 encePairwiseOnDemand]: 376/401 looper letters, 72 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2022-11-23 02:50:25,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 84 transitions, 346 flow [2022-11-23 02:50:25,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:50:25,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:50:25,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 631 transitions. [2022-11-23 02:50:25,146 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5245220282626767 [2022-11-23 02:50:25,147 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 631 transitions. [2022-11-23 02:50:25,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 631 transitions. [2022-11-23 02:50:25,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:50:25,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 631 transitions. [2022-11-23 02:50:25,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 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) [2022-11-23 02:50:25,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 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) [2022-11-23 02:50:25,152 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 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) [2022-11-23 02:50:25,152 INFO L175 Difference]: Start difference. First operand has 73 places, 89 transitions, 208 flow. Second operand 3 states and 631 transitions. [2022-11-23 02:50:25,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 84 transitions, 346 flow [2022-11-23 02:50:25,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 84 transitions, 346 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:50:25,159 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 184 flow [2022-11-23 02:50:25,160 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=76, PETRI_TRANSITIONS=70} [2022-11-23 02:50:25,162 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2022-11-23 02:50:25,162 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 184 flow [2022-11-23 02:50:25,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:50:25,162 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:50:25,162 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:50:25,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 02:50:25,163 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-23 02:50:25,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:50:25,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1057073324, now seen corresponding path program 1 times [2022-11-23 02:50:25,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:50:25,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171705190] [2022-11-23 02:50:25,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:50:25,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:50:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:50:25,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:50:25,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:50:25,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171705190] [2022-11-23 02:50:25,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171705190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:50:25,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:50:25,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:50:25,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789242] [2022-11-23 02:50:25,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:50:25,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:50:25,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:50:25,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:50:25,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:50:25,243 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 401 [2022-11-23 02:50:25,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 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) [2022-11-23 02:50:25,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:50:25,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 401 [2022-11-23 02:50:25,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:50:38,026 INFO L130 PetriNetUnfolder]: 116451/175293 cut-off events. [2022-11-23 02:50:38,026 INFO L131 PetriNetUnfolder]: For 9410/9410 co-relation queries the response was YES. [2022-11-23 02:50:38,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357217 conditions, 175293 events. 116451/175293 cut-off events. For 9410/9410 co-relation queries the response was YES. Maximal size of possible extension queue 4962. Compared 1482329 event pairs, 49670 based on Foata normal form. 0/132237 useless extension candidates. Maximal degree in co-relation 357123. Up to 129009 conditions per place. [2022-11-23 02:50:38,963 INFO L137 encePairwiseOnDemand]: 381/401 looper letters, 100 selfloop transitions, 8 changer transitions 0/117 dead transitions. [2022-11-23 02:50:38,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 117 transitions, 526 flow [2022-11-23 02:50:38,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:50:38,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:50:38,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 637 transitions. [2022-11-23 02:50:38,966 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5295095594347464 [2022-11-23 02:50:38,967 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 637 transitions. [2022-11-23 02:50:38,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 637 transitions. [2022-11-23 02:50:38,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:50:38,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 637 transitions. [2022-11-23 02:50:38,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 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) [2022-11-23 02:50:38,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 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) [2022-11-23 02:50:38,972 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 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) [2022-11-23 02:50:38,972 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 184 flow. Second operand 3 states and 637 transitions. [2022-11-23 02:50:38,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 117 transitions, 526 flow [2022-11-23 02:50:38,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 117 transitions, 523 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:50:38,995 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 266 flow [2022-11-23 02:50:38,995 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2022-11-23 02:50:38,996 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 6 predicate places. [2022-11-23 02:50:38,996 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 266 flow [2022-11-23 02:50:38,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 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) [2022-11-23 02:50:38,996 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:50:38,996 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-23 02:50:38,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 02:50:38,997 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-23 02:50:38,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:50:38,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1292947354, now seen corresponding path program 1 times [2022-11-23 02:50:38,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:50:38,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217283281] [2022-11-23 02:50:38,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:50:38,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:50:39,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:50:39,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:50:39,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:50:39,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217283281] [2022-11-23 02:50:39,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217283281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:50:39,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:50:39,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:50:39,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100226841] [2022-11-23 02:50:39,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:50:39,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:50:39,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:50:39,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:50:39,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:50:39,067 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 401 [2022-11-23 02:50:39,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 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) [2022-11-23 02:50:39,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:50:39,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 401 [2022-11-23 02:50:39,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand