./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8 --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 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 --- 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-2329fc7 [2022-12-13 18:45:45,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:45:45,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:45:45,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:45:45,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:45:45,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:45:45,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:45:45,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:45:45,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:45:45,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:45:45,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:45:45,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:45:45,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:45:45,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:45:45,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:45:45,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:45:45,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:45:45,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:45:45,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:45:45,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:45:45,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:45:45,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:45:45,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:45:45,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:45:45,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:45:45,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:45:45,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:45:45,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:45:45,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:45:45,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:45:45,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:45:45,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:45:45,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:45:45,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:45:45,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:45:45,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:45:45,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:45:45,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:45:45,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:45:45,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:45:45,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:45:45,121 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 18:45:45,141 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:45:45,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:45:45,141 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:45:45,141 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:45:45,142 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:45:45,142 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:45:45,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:45:45,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:45:45,143 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:45:45,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:45:45,144 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:45:45,144 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 18:45:45,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:45:45,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:45:45,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:45:45,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:45:45,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:45:45,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:45:45,145 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 18:45:45,145 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:45:45,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:45:45,146 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:45:45,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:45:45,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:45:45,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:45:45,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:45:45,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:45:45,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:45:45,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:45:45,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:45:45,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:45:45,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:45:45,147 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:45:45,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:45:45,148 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:45:45,148 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:45:45,148 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:45:45,148 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_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 [2022-12-13 18:45:45,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:45:45,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:45:45,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:45:45,370 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:45:45,371 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:45:45,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2022-12-13 18:45:47,947 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:45:48,168 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:45:48,168 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2022-12-13 18:45:48,179 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/data/0184e0c37/5e5bb13efe1241d39b1c6489ab103a2e/FLAG48618c91f [2022-12-13 18:45:48,502 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/data/0184e0c37/5e5bb13efe1241d39b1c6489ab103a2e [2022-12-13 18:45:48,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:45:48,506 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:45:48,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:45:48,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:45:48,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:45:48,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:45:48" (1/1) ... [2022-12-13 18:45:48,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34ca156f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:48, skipping insertion in model container [2022-12-13 18:45:48,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:45:48" (1/1) ... [2022-12-13 18:45:48,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:45:48,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:45:48,759 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_5c0217d6-f307-4817-a6d9-cb7f121e2403/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i[30176,30189] [2022-12-13 18:45:48,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:45:48,783 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:45:48,808 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_5c0217d6-f307-4817-a6d9-cb7f121e2403/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i[30176,30189] [2022-12-13 18:45:48,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:45:48,836 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:45:48,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:48 WrapperNode [2022-12-13 18:45:48,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:45:48,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:45:48,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:45:48,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:45:48,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:48" (1/1) ... [2022-12-13 18:45:48,852 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:48" (1/1) ... [2022-12-13 18:45:48,866 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-12-13 18:45:48,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:45:48,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:45:48,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:45:48,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:45:48,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:48" (1/1) ... [2022-12-13 18:45:48,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:48" (1/1) ... [2022-12-13 18:45:48,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:48" (1/1) ... [2022-12-13 18:45:48,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:48" (1/1) ... [2022-12-13 18:45:48,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:48" (1/1) ... [2022-12-13 18:45:48,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:48" (1/1) ... [2022-12-13 18:45:48,883 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:48" (1/1) ... [2022-12-13 18:45:48,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:48" (1/1) ... [2022-12-13 18:45:48,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:45:48,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:45:48,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:45:48,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:45:48,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:48" (1/1) ... [2022-12-13 18:45:48,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:45:48,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:45:48,908 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:45:48,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:45:48,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 18:45:48,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:45:48,941 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 18:45:48,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:45:48,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:45:48,941 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 18:45:48,942 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 18:45:48,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:45:48,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:45:48,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:45:48,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:45:48,943 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 18:45:49,040 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:45:49,042 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:45:49,207 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:45:49,213 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:45:49,213 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-12-13 18:45:49,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:45:49 BoogieIcfgContainer [2022-12-13 18:45:49,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:45:49,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:45:49,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:45:49,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:45:49,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:45:48" (1/3) ... [2022-12-13 18:45:49,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a141fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:45:49, skipping insertion in model container [2022-12-13 18:45:49,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:48" (2/3) ... [2022-12-13 18:45:49,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a141fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:45:49, skipping insertion in model container [2022-12-13 18:45:49,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:45:49" (3/3) ... [2022-12-13 18:45:49,222 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_22-deref_read_racefree.i [2022-12-13 18:45:49,228 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 18:45:49,236 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:45:49,236 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-13 18:45:49,236 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 18:45:49,277 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 18:45:49,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 117 transitions, 239 flow [2022-12-13 18:45:49,357 INFO L130 PetriNetUnfolder]: 14/150 cut-off events. [2022-12-13 18:45:49,357 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:45:49,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 150 events. 14/150 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 355 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 82. Up to 4 conditions per place. [2022-12-13 18:45:49,363 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 117 transitions, 239 flow [2022-12-13 18:45:49,367 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 117 transitions, 239 flow [2022-12-13 18:45:49,370 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:45:49,379 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 117 transitions, 239 flow [2022-12-13 18:45:49,382 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 117 transitions, 239 flow [2022-12-13 18:45:49,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 117 transitions, 239 flow [2022-12-13 18:45:49,413 INFO L130 PetriNetUnfolder]: 14/150 cut-off events. [2022-12-13 18:45:49,413 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:45:49,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 150 events. 14/150 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 355 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 82. Up to 4 conditions per place. [2022-12-13 18:45:49,416 INFO L119 LiptonReduction]: Number of co-enabled transitions 3440 [2022-12-13 18:45:51,756 INFO L134 LiptonReduction]: Checked pairs total: 6553 [2022-12-13 18:45:51,757 INFO L136 LiptonReduction]: Total number of compositions: 109 [2022-12-13 18:45:51,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:45:51,776 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;@27afa2f6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:45:51,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-13 18:45:51,779 INFO L130 PetriNetUnfolder]: 2/9 cut-off events. [2022-12-13 18:45:51,779 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:45:51,779 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:45:51,780 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 18:45:51,780 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-12-13 18:45:51,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:51,785 INFO L85 PathProgramCache]: Analyzing trace with hash 14042774, now seen corresponding path program 1 times [2022-12-13 18:45:51,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:51,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53301381] [2022-12-13 18:45:51,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:51,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:45:51,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:51,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53301381] [2022-12-13 18:45:51,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53301381] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:45:51,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:45:51,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:45:51,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909490245] [2022-12-13 18:45:51,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:45:51,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:45:51,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:51,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:45:51,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:45:51,986 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 226 [2022-12-13 18:45:51,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 36 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 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) [2022-12-13 18:45:51,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:45:51,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 226 [2022-12-13 18:45:51,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:45:52,066 INFO L130 PetriNetUnfolder]: 91/216 cut-off events. [2022-12-13 18:45:52,066 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:45:52,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 216 events. 91/216 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 773 event pairs, 72 based on Foata normal form. 16/186 useless extension candidates. Maximal degree in co-relation 413. Up to 190 conditions per place. [2022-12-13 18:45:52,067 INFO L137 encePairwiseOnDemand]: 212/226 looper letters, 34 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2022-12-13 18:45:52,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 39 transitions, 155 flow [2022-12-13 18:45:52,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:45:52,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:45:52,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2022-12-13 18:45:52,077 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5265486725663717 [2022-12-13 18:45:52,078 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2022-12-13 18:45:52,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2022-12-13 18:45:52,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:45:52,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2022-12-13 18:45:52,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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) [2022-12-13 18:45:52,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 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) [2022-12-13 18:45:52,088 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 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) [2022-12-13 18:45:52,089 INFO L175 Difference]: Start difference. First operand has 30 places, 36 transitions, 77 flow. Second operand 3 states and 357 transitions. [2022-12-13 18:45:52,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 39 transitions, 155 flow [2022-12-13 18:45:52,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 39 transitions, 155 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:45:52,093 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 63 flow [2022-12-13 18:45:52,094 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2022-12-13 18:45:52,096 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2022-12-13 18:45:52,097 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 63 flow [2022-12-13 18:45:52,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 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) [2022-12-13 18:45:52,097 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:45:52,097 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 18:45:52,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:45:52,097 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-12-13 18:45:52,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:52,098 INFO L85 PathProgramCache]: Analyzing trace with hash 610243675, now seen corresponding path program 1 times [2022-12-13 18:45:52,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:52,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131377010] [2022-12-13 18:45:52,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:52,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:45:52,122 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:45:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:45:52,149 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:45:52,149 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:45:52,151 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-12-13 18:45:52,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2022-12-13 18:45:52,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2022-12-13 18:45:52,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2022-12-13 18:45:52,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2022-12-13 18:45:52,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2022-12-13 18:45:52,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2022-12-13 18:45:52,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2022-12-13 18:45:52,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2022-12-13 18:45:52,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2022-12-13 18:45:52,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2022-12-13 18:45:52,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:45:52,154 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 18:45:52,156 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 18:45:52,156 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 18:45:52,171 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 18:45:52,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 158 transitions, 328 flow [2022-12-13 18:45:52,197 INFO L130 PetriNetUnfolder]: 24/233 cut-off events. [2022-12-13 18:45:52,197 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 18:45:52,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 233 events. 24/233 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 697 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 151. Up to 6 conditions per place. [2022-12-13 18:45:52,198 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 158 transitions, 328 flow [2022-12-13 18:45:52,199 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 158 transitions, 328 flow [2022-12-13 18:45:52,199 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:45:52,199 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 158 transitions, 328 flow [2022-12-13 18:45:52,200 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 158 transitions, 328 flow [2022-12-13 18:45:52,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 158 transitions, 328 flow [2022-12-13 18:45:52,218 INFO L130 PetriNetUnfolder]: 24/233 cut-off events. [2022-12-13 18:45:52,218 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 18:45:52,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 233 events. 24/233 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 697 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 151. Up to 6 conditions per place. [2022-12-13 18:45:52,223 INFO L119 LiptonReduction]: Number of co-enabled transitions 10160 [2022-12-13 18:45:54,465 INFO L134 LiptonReduction]: Checked pairs total: 21471 [2022-12-13 18:45:54,465 INFO L136 LiptonReduction]: Total number of compositions: 142 [2022-12-13 18:45:54,467 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:45:54,468 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;@27afa2f6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:45:54,468 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-12-13 18:45:54,469 INFO L130 PetriNetUnfolder]: 3/13 cut-off events. [2022-12-13 18:45:54,469 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:45:54,469 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:45:54,469 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 18:45:54,470 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-13 18:45:54,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:54,470 INFO L85 PathProgramCache]: Analyzing trace with hash 759572418, now seen corresponding path program 1 times [2022-12-13 18:45:54,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:54,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323072260] [2022-12-13 18:45:54,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:54,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:54,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:45:54,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:54,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323072260] [2022-12-13 18:45:54,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323072260] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:45:54,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:45:54,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:45:54,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734917900] [2022-12-13 18:45:54,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:45:54,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:45:54,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:54,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:45:54,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:45:54,529 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 300 [2022-12-13 18:45:54,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 59 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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) [2022-12-13 18:45:54,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:45:54,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 300 [2022-12-13 18:45:54,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:45:54,953 INFO L130 PetriNetUnfolder]: 3522/5712 cut-off events. [2022-12-13 18:45:54,953 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-12-13 18:45:54,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11361 conditions, 5712 events. 3522/5712 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 38336 event pairs, 1638 based on Foata normal form. 604/4552 useless extension candidates. Maximal degree in co-relation 1461. Up to 5564 conditions per place. [2022-12-13 18:45:54,984 INFO L137 encePairwiseOnDemand]: 280/300 looper letters, 50 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2022-12-13 18:45:54,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 58 transitions, 232 flow [2022-12-13 18:45:54,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:45:54,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:45:54,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 481 transitions. [2022-12-13 18:45:54,987 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5344444444444445 [2022-12-13 18:45:54,987 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 481 transitions. [2022-12-13 18:45:54,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 481 transitions. [2022-12-13 18:45:54,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:45:54,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 481 transitions. [2022-12-13 18:45:54,990 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) [2022-12-13 18:45:54,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 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) [2022-12-13 18:45:54,993 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 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) [2022-12-13 18:45:54,993 INFO L175 Difference]: Start difference. First operand has 49 places, 59 transitions, 130 flow. Second operand 3 states and 481 transitions. [2022-12-13 18:45:54,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 58 transitions, 232 flow [2022-12-13 18:45:54,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 230 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-12-13 18:45:54,995 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 114 flow [2022-12-13 18:45:54,996 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2022-12-13 18:45:54,996 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 3 predicate places. [2022-12-13 18:45:54,996 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 114 flow [2022-12-13 18:45:54,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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) [2022-12-13 18:45:54,997 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:45:54,997 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:54,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:45:54,997 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-13 18:45:54,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:54,998 INFO L85 PathProgramCache]: Analyzing trace with hash -188756528, now seen corresponding path program 1 times [2022-12-13 18:45:54,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:54,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368849758] [2022-12-13 18:45:54,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:54,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:55,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:45:55,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:55,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368849758] [2022-12-13 18:45:55,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368849758] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:45:55,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:45:55,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:45:55,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384598606] [2022-12-13 18:45:55,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:45:55,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:45:55,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:55,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:45:55,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:45:55,160 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 300 [2022-12-13 18:45:55,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 131.25) internal successors, (525), 4 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) [2022-12-13 18:45:55,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:45:55,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 300 [2022-12-13 18:45:55,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:45:55,615 INFO L130 PetriNetUnfolder]: 3164/5101 cut-off events. [2022-12-13 18:45:55,615 INFO L131 PetriNetUnfolder]: For 403/403 co-relation queries the response was YES. [2022-12-13 18:45:55,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10911 conditions, 5101 events. 3164/5101 cut-off events. For 403/403 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 32321 event pairs, 1209 based on Foata normal form. 0/3825 useless extension candidates. Maximal degree in co-relation 10828. Up to 4704 conditions per place. [2022-12-13 18:45:55,641 INFO L137 encePairwiseOnDemand]: 292/300 looper letters, 58 selfloop transitions, 6 changer transitions 0/70 dead transitions. [2022-12-13 18:45:55,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 308 flow [2022-12-13 18:45:55,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:45:55,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:45:55,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 590 transitions. [2022-12-13 18:45:55,643 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2022-12-13 18:45:55,643 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 590 transitions. [2022-12-13 18:45:55,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 590 transitions. [2022-12-13 18:45:55,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:45:55,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 590 transitions. [2022-12-13 18:45:55,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 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) [2022-12-13 18:45:55,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 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) [2022-12-13 18:45:55,646 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 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) [2022-12-13 18:45:55,646 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 114 flow. Second operand 4 states and 590 transitions. [2022-12-13 18:45:55,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 308 flow [2022-12-13 18:45:55,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:45:55,648 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 163 flow [2022-12-13 18:45:55,648 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2022-12-13 18:45:55,649 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 7 predicate places. [2022-12-13 18:45:55,649 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 163 flow [2022-12-13 18:45:55,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.25) internal successors, (525), 4 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) [2022-12-13 18:45:55,649 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:45:55,649 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 18:45:55,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:45:55,650 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-13 18:45:55,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:55,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1318313463, now seen corresponding path program 1 times [2022-12-13 18:45:55,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:55,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502085549] [2022-12-13 18:45:55,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:55,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:55,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:45:55,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:55,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502085549] [2022-12-13 18:45:55,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502085549] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:45:55,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:45:55,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:45:55,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450244201] [2022-12-13 18:45:55,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:45:55,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:45:55,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:55,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:45:55,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:45:55,688 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 300 [2022-12-13 18:45:55,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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) [2022-12-13 18:45:55,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:45:55,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 300 [2022-12-13 18:45:55,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:45:56,080 INFO L130 PetriNetUnfolder]: 2838/4560 cut-off events. [2022-12-13 18:45:56,081 INFO L131 PetriNetUnfolder]: For 850/850 co-relation queries the response was YES. [2022-12-13 18:45:56,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10792 conditions, 4560 events. 2838/4560 cut-off events. For 850/850 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 29288 event pairs, 885 based on Foata normal form. 0/3705 useless extension candidates. Maximal degree in co-relation 8099. Up to 3145 conditions per place. [2022-12-13 18:45:56,124 INFO L137 encePairwiseOnDemand]: 296/300 looper letters, 68 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2022-12-13 18:45:56,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 78 transitions, 387 flow [2022-12-13 18:45:56,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:45:56,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:45:56,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2022-12-13 18:45:56,127 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5188888888888888 [2022-12-13 18:45:56,127 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2022-12-13 18:45:56,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2022-12-13 18:45:56,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:45:56,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2022-12-13 18:45:56,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 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) [2022-12-13 18:45:56,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 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) [2022-12-13 18:45:56,133 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 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) [2022-12-13 18:45:56,133 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 163 flow. Second operand 3 states and 467 transitions. [2022-12-13 18:45:56,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 78 transitions, 387 flow [2022-12-13 18:45:56,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 78 transitions, 387 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:45:56,139 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 175 flow [2022-12-13 18:45:56,139 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2022-12-13 18:45:56,140 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2022-12-13 18:45:56,140 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 175 flow [2022-12-13 18:45:56,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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) [2022-12-13 18:45:56,140 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:45:56,140 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 18:45:56,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:45:56,141 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-13 18:45:56,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:56,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1318313432, now seen corresponding path program 1 times [2022-12-13 18:45:56,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:56,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166963663] [2022-12-13 18:45:56,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:56,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:56,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:45:56,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:56,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166963663] [2022-12-13 18:45:56,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166963663] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:45:56,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852829871] [2022-12-13 18:45:56,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:56,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:56,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:45:56,200 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:45:56,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:45:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:56,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:45:56,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:45:56,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:45:56,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:45:56,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852829871] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:45:56,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:45:56,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 18:45:56,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198849322] [2022-12-13 18:45:56,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:45:56,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:45:56,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:56,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:45:56,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:45:56,318 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 300 [2022-12-13 18:45:56,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 175 flow. Second operand has 4 states, 4 states have (on average 136.75) internal successors, (547), 4 states have internal predecessors, (547), 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) [2022-12-13 18:45:56,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:45:56,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 300 [2022-12-13 18:45:56,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:45:56,688 INFO L130 PetriNetUnfolder]: 2512/4070 cut-off events. [2022-12-13 18:45:56,689 INFO L131 PetriNetUnfolder]: For 2360/2360 co-relation queries the response was YES. [2022-12-13 18:45:56,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10091 conditions, 4070 events. 2512/4070 cut-off events. For 2360/2360 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 24377 event pairs, 2270 based on Foata normal form. 177/3643 useless extension candidates. Maximal degree in co-relation 7593. Up to 4005 conditions per place. [2022-12-13 18:45:56,703 INFO L137 encePairwiseOnDemand]: 297/300 looper letters, 51 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2022-12-13 18:45:56,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 300 flow [2022-12-13 18:45:56,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:45:56,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:45:56,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 589 transitions. [2022-12-13 18:45:56,705 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49083333333333334 [2022-12-13 18:45:56,705 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 589 transitions. [2022-12-13 18:45:56,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 589 transitions. [2022-12-13 18:45:56,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:45:56,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 589 transitions. [2022-12-13 18:45:56,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 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) [2022-12-13 18:45:56,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 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) [2022-12-13 18:45:56,711 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 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) [2022-12-13 18:45:56,711 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 175 flow. Second operand 4 states and 589 transitions. [2022-12-13 18:45:56,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 300 flow [2022-12-13 18:45:56,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 59 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:45:56,714 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 171 flow [2022-12-13 18:45:56,715 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=171, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2022-12-13 18:45:56,715 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 10 predicate places. [2022-12-13 18:45:56,715 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 171 flow [2022-12-13 18:45:56,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.75) internal successors, (547), 4 states have internal predecessors, (547), 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) [2022-12-13 18:45:56,716 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:45:56,716 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:56,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:45:56,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 18:45:56,917 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-13 18:45:56,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:56,917 INFO L85 PathProgramCache]: Analyzing trace with hash -743813242, now seen corresponding path program 1 times [2022-12-13 18:45:56,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:56,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488586209] [2022-12-13 18:45:56,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:56,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:57,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:45:57,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:57,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488586209] [2022-12-13 18:45:57,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488586209] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:45:57,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:45:57,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:45:57,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860401234] [2022-12-13 18:45:57,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:45:57,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:45:57,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:57,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:45:57,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:45:57,037 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 300 [2022-12-13 18:45:57,039 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 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) [2022-12-13 18:45:57,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:45:57,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 300 [2022-12-13 18:45:57,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:45:57,581 INFO L130 PetriNetUnfolder]: 3232/5496 cut-off events. [2022-12-13 18:45:57,581 INFO L131 PetriNetUnfolder]: For 2075/2075 co-relation queries the response was YES. [2022-12-13 18:45:57,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13332 conditions, 5496 events. 3232/5496 cut-off events. For 2075/2075 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 36086 event pairs, 805 based on Foata normal form. 0/4900 useless extension candidates. Maximal degree in co-relation 13235. Up to 2465 conditions per place. [2022-12-13 18:45:57,599 INFO L137 encePairwiseOnDemand]: 286/300 looper letters, 101 selfloop transitions, 27 changer transitions 0/134 dead transitions. [2022-12-13 18:45:57,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 134 transitions, 720 flow [2022-12-13 18:45:57,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:45:57,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:45:57,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 754 transitions. [2022-12-13 18:45:57,601 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5026666666666667 [2022-12-13 18:45:57,601 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 754 transitions. [2022-12-13 18:45:57,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 754 transitions. [2022-12-13 18:45:57,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:45:57,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 754 transitions. [2022-12-13 18:45:57,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.8) internal successors, (754), 5 states have internal predecessors, (754), 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) [2022-12-13 18:45:57,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 300.0) internal successors, (1800), 6 states have internal predecessors, (1800), 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) [2022-12-13 18:45:57,604 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 300.0) internal successors, (1800), 6 states have internal predecessors, (1800), 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) [2022-12-13 18:45:57,604 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 171 flow. Second operand 5 states and 754 transitions. [2022-12-13 18:45:57,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 134 transitions, 720 flow [2022-12-13 18:45:57,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 134 transitions, 715 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:45:57,607 INFO L231 Difference]: Finished difference. Result has 65 places, 71 transitions, 400 flow [2022-12-13 18:45:57,608 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=400, PETRI_PLACES=65, PETRI_TRANSITIONS=71} [2022-12-13 18:45:57,608 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 16 predicate places. [2022-12-13 18:45:57,608 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 71 transitions, 400 flow [2022-12-13 18:45:57,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 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) [2022-12-13 18:45:57,608 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:45:57,608 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:57,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:45:57,609 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-13 18:45:57,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:57,609 INFO L85 PathProgramCache]: Analyzing trace with hash -743813280, now seen corresponding path program 1 times [2022-12-13 18:45:57,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:57,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097335860] [2022-12-13 18:45:57,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:57,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:57,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:45:57,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:57,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097335860] [2022-12-13 18:45:57,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097335860] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:45:57,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:45:57,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:45:57,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946550584] [2022-12-13 18:45:57,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:45:57,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:45:57,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:57,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:45:57,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:45:57,811 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 300 [2022-12-13 18:45:57,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 71 transitions, 400 flow. Second operand has 6 states, 6 states have (on average 127.33333333333333) internal successors, (764), 6 states have internal predecessors, (764), 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) [2022-12-13 18:45:57,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:45:57,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 300 [2022-12-13 18:45:57,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:45:58,429 INFO L130 PetriNetUnfolder]: 3679/6391 cut-off events. [2022-12-13 18:45:58,429 INFO L131 PetriNetUnfolder]: For 7567/7570 co-relation queries the response was YES. [2022-12-13 18:45:58,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18842 conditions, 6391 events. 3679/6391 cut-off events. For 7567/7570 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 43870 event pairs, 845 based on Foata normal form. 189/6575 useless extension candidates. Maximal degree in co-relation 18740. Up to 3965 conditions per place. [2022-12-13 18:45:58,450 INFO L137 encePairwiseOnDemand]: 283/300 looper letters, 146 selfloop transitions, 45 changer transitions 0/197 dead transitions. [2022-12-13 18:45:58,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 197 transitions, 1331 flow [2022-12-13 18:45:58,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:45:58,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 18:45:58,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1290 transitions. [2022-12-13 18:45:58,453 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2022-12-13 18:45:58,453 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1290 transitions. [2022-12-13 18:45:58,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1290 transitions. [2022-12-13 18:45:58,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:45:58,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1290 transitions. [2022-12-13 18:45:58,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 143.33333333333334) internal successors, (1290), 9 states have internal predecessors, (1290), 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) [2022-12-13 18:45:58,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 300.0) internal successors, (3000), 10 states have internal predecessors, (3000), 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) [2022-12-13 18:45:58,458 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 300.0) internal successors, (3000), 10 states have internal predecessors, (3000), 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) [2022-12-13 18:45:58,458 INFO L175 Difference]: Start difference. First operand has 65 places, 71 transitions, 400 flow. Second operand 9 states and 1290 transitions. [2022-12-13 18:45:58,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 197 transitions, 1331 flow [2022-12-13 18:45:58,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 197 transitions, 1331 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:45:58,471 INFO L231 Difference]: Finished difference. Result has 77 places, 103 transitions, 837 flow [2022-12-13 18:45:58,471 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=837, PETRI_PLACES=77, PETRI_TRANSITIONS=103} [2022-12-13 18:45:58,472 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 28 predicate places. [2022-12-13 18:45:58,472 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 103 transitions, 837 flow [2022-12-13 18:45:58,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.33333333333333) internal successors, (764), 6 states have internal predecessors, (764), 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) [2022-12-13 18:45:58,472 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:45:58,473 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 18:45:58,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 18:45:58,473 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-13 18:45:58,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:58,473 INFO L85 PathProgramCache]: Analyzing trace with hash -116073577, now seen corresponding path program 1 times [2022-12-13 18:45:58,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:58,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340142849] [2022-12-13 18:45:58,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:58,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:45:58,484 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:45:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:45:58,496 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:45:58,496 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:45:58,497 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-12-13 18:45:58,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2022-12-13 18:45:58,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2022-12-13 18:45:58,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2022-12-13 18:45:58,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2022-12-13 18:45:58,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2022-12-13 18:45:58,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2022-12-13 18:45:58,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2022-12-13 18:45:58,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2022-12-13 18:45:58,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2022-12-13 18:45:58,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2022-12-13 18:45:58,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2022-12-13 18:45:58,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2022-12-13 18:45:58,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2022-12-13 18:45:58,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2022-12-13 18:45:58,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:45:58,499 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:58,500 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 18:45:58,500 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 18:45:58,519 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 18:45:58,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 199 transitions, 419 flow [2022-12-13 18:45:58,555 INFO L130 PetriNetUnfolder]: 34/316 cut-off events. [2022-12-13 18:45:58,555 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 18:45:58,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 316 events. 34/316 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1030 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 237. Up to 8 conditions per place. [2022-12-13 18:45:58,557 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 199 transitions, 419 flow [2022-12-13 18:45:58,560 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 199 transitions, 419 flow [2022-12-13 18:45:58,560 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:45:58,560 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 184 places, 199 transitions, 419 flow [2022-12-13 18:45:58,560 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 184 places, 199 transitions, 419 flow [2022-12-13 18:45:58,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 199 transitions, 419 flow [2022-12-13 18:45:58,592 INFO L130 PetriNetUnfolder]: 34/316 cut-off events. [2022-12-13 18:45:58,592 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 18:45:58,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 316 events. 34/316 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1030 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 237. Up to 8 conditions per place. [2022-12-13 18:45:58,606 INFO L119 LiptonReduction]: Number of co-enabled transitions 20160 [2022-12-13 18:46:01,323 INFO L134 LiptonReduction]: Checked pairs total: 50763 [2022-12-13 18:46:01,323 INFO L136 LiptonReduction]: Total number of compositions: 168 [2022-12-13 18:46:01,324 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:46:01,324 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;@27afa2f6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:46:01,324 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-12-13 18:46:01,325 INFO L130 PetriNetUnfolder]: 3/13 cut-off events. [2022-12-13 18:46:01,326 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:46:01,326 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:46:01,326 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 18:46:01,326 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 18:46:01,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:46:01,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1149794555, now seen corresponding path program 1 times [2022-12-13 18:46:01,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:46:01,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65399628] [2022-12-13 18:46:01,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:46:01,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:46:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:46:01,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:46:01,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:46:01,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65399628] [2022-12-13 18:46:01,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65399628] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:46:01,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:46:01,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:46:01,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331648434] [2022-12-13 18:46:01,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:46:01,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:46:01,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:46:01,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:46:01,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:46:01,354 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 367 [2022-12-13 18:46:01,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 81 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 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) [2022-12-13 18:46:01,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:46:01,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 367 [2022-12-13 18:46:01,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:46:07,373 INFO L130 PetriNetUnfolder]: 77017/108132 cut-off events. [2022-12-13 18:46:07,373 INFO L131 PetriNetUnfolder]: For 1261/1261 co-relation queries the response was YES. [2022-12-13 18:46:07,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215448 conditions, 108132 events. 77017/108132 cut-off events. For 1261/1261 co-relation queries the response was YES. Maximal size of possible extension queue 3870. Compared 806884 event pairs, 49933 based on Foata normal form. 12494/86933 useless extension candidates. Maximal degree in co-relation 21019. Up to 106359 conditions per place. [2022-12-13 18:46:07,824 INFO L137 encePairwiseOnDemand]: 341/367 looper letters, 64 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2022-12-13 18:46:07,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 74 transitions, 301 flow [2022-12-13 18:46:07,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:46:07,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:46:07,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 603 transitions. [2022-12-13 18:46:07,826 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.547683923705722 [2022-12-13 18:46:07,826 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 603 transitions. [2022-12-13 18:46:07,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 603 transitions. [2022-12-13 18:46:07,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:46:07,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 603 transitions. [2022-12-13 18:46:07,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 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) [2022-12-13 18:46:07,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 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) [2022-12-13 18:46:07,830 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 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) [2022-12-13 18:46:07,830 INFO L175 Difference]: Start difference. First operand has 67 places, 81 transitions, 183 flow. Second operand 3 states and 603 transitions. [2022-12-13 18:46:07,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 74 transitions, 301 flow [2022-12-13 18:46:07,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 74 transitions, 295 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-12-13 18:46:07,833 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 151 flow [2022-12-13 18:46:07,833 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2022-12-13 18:46:07,834 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 3 predicate places. [2022-12-13 18:46:07,834 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 151 flow [2022-12-13 18:46:07,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 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) [2022-12-13 18:46:07,835 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:46:07,835 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:46:07,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 18:46:07,835 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 18:46:07,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:46:07,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1154563169, now seen corresponding path program 1 times [2022-12-13 18:46:07,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:46:07,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002653098] [2022-12-13 18:46:07,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:46:07,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:46:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:46:07,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:46:07,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:46:07,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002653098] [2022-12-13 18:46:07,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002653098] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:46:07,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:46:07,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:46:07,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819215766] [2022-12-13 18:46:07,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:46:07,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:46:07,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:46:07,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:46:07,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:46:07,980 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 367 [2022-12-13 18:46:07,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 163.25) internal successors, (653), 4 states have internal predecessors, (653), 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) [2022-12-13 18:46:07,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:46:07,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 367 [2022-12-13 18:46:07,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:46:14,485 INFO L130 PetriNetUnfolder]: 73335/101843 cut-off events. [2022-12-13 18:46:14,486 INFO L131 PetriNetUnfolder]: For 6151/6151 co-relation queries the response was YES. [2022-12-13 18:46:14,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214986 conditions, 101843 events. 73335/101843 cut-off events. For 6151/6151 co-relation queries the response was YES. Maximal size of possible extension queue 4020. Compared 741967 event pairs, 35728 based on Foata normal form. 0/73450 useless extension candidates. Maximal degree in co-relation 214902. Up to 99949 conditions per place. [2022-12-13 18:46:14,859 INFO L137 encePairwiseOnDemand]: 356/367 looper letters, 77 selfloop transitions, 8 changer transitions 0/93 dead transitions. [2022-12-13 18:46:14,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 93 transitions, 406 flow [2022-12-13 18:46:14,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:46:14,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:46:14,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 743 transitions. [2022-12-13 18:46:14,861 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5061307901907357 [2022-12-13 18:46:14,861 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 743 transitions. [2022-12-13 18:46:14,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 743 transitions. [2022-12-13 18:46:14,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:46:14,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 743 transitions. [2022-12-13 18:46:14,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 185.75) internal successors, (743), 4 states have internal predecessors, (743), 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) [2022-12-13 18:46:14,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 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) [2022-12-13 18:46:14,865 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 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) [2022-12-13 18:46:14,865 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 151 flow. Second operand 4 states and 743 transitions. [2022-12-13 18:46:14,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 93 transitions, 406 flow [2022-12-13 18:46:14,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 93 transitions, 403 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:46:14,872 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 220 flow [2022-12-13 18:46:14,872 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2022-12-13 18:46:14,872 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 7 predicate places. [2022-12-13 18:46:14,872 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 220 flow [2022-12-13 18:46:14,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.25) internal successors, (653), 4 states have internal predecessors, (653), 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) [2022-12-13 18:46:14,873 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:46:14,873 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 18:46:14,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 18:46:14,873 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 18:46:14,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:46:14,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1855482553, now seen corresponding path program 1 times [2022-12-13 18:46:14,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:46:14,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086351786] [2022-12-13 18:46:14,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:46:14,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:46:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:46:14,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:46:14,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:46:14,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086351786] [2022-12-13 18:46:14,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086351786] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:46:14,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983570801] [2022-12-13 18:46:14,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:46:14,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:46:14,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:46:14,904 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:46:14,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 18:46:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:46:14,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:46:14,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:46:14,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:46:14,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:46:14,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983570801] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:46:14,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:46:14,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 18:46:14,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920504987] [2022-12-13 18:46:14,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:46:14,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:46:14,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:46:14,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:46:14,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:46:14,991 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 367 [2022-12-13 18:46:14,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 170.75) internal successors, (683), 4 states have internal predecessors, (683), 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) [2022-12-13 18:46:14,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:46:14,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 367 [2022-12-13 18:46:14,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:46:20,549 INFO L130 PetriNetUnfolder]: 65748/91850 cut-off events. [2022-12-13 18:46:20,549 INFO L131 PetriNetUnfolder]: For 25735/26650 co-relation queries the response was YES. [2022-12-13 18:46:20,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218782 conditions, 91850 events. 65748/91850 cut-off events. For 25735/26650 co-relation queries the response was YES. Maximal size of possible extension queue 3471. Compared 664379 event pairs, 44618 based on Foata normal form. 0/72766 useless extension candidates. Maximal degree in co-relation 130028. Up to 90962 conditions per place. [2022-12-13 18:46:21,025 INFO L137 encePairwiseOnDemand]: 364/367 looper letters, 68 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2022-12-13 18:46:21,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 78 transitions, 381 flow [2022-12-13 18:46:21,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:46:21,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:46:21,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 740 transitions. [2022-12-13 18:46:21,030 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5040871934604905 [2022-12-13 18:46:21,030 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 740 transitions. [2022-12-13 18:46:21,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 740 transitions. [2022-12-13 18:46:21,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:46:21,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 740 transitions. [2022-12-13 18:46:21,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 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) [2022-12-13 18:46:21,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 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) [2022-12-13 18:46:21,039 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 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) [2022-12-13 18:46:21,039 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 220 flow. Second operand 4 states and 740 transitions. [2022-12-13 18:46:21,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 78 transitions, 381 flow [2022-12-13 18:46:21,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 78 transitions, 381 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:46:21,073 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 220 flow [2022-12-13 18:46:21,073 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2022-12-13 18:46:21,073 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 9 predicate places. [2022-12-13 18:46:21,073 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 220 flow [2022-12-13 18:46:21,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.75) internal successors, (683), 4 states have internal predecessors, (683), 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) [2022-12-13 18:46:21,074 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:46:21,074 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 18:46:21,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 18:46:21,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 18:46:21,275 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 18:46:21,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:46:21,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1855482594, now seen corresponding path program 1 times [2022-12-13 18:46:21,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:46:21,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275446305] [2022-12-13 18:46:21,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:46:21,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:46:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:46:21,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:46:21,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:46:21,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275446305] [2022-12-13 18:46:21,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275446305] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:46:21,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:46:21,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:46:21,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239463180] [2022-12-13 18:46:21,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:46:21,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:46:21,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:46:21,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:46:21,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:46:21,349 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 367 [2022-12-13 18:46:21,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 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) [2022-12-13 18:46:21,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:46:21,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 367 [2022-12-13 18:46:21,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:46:26,410 INFO L130 PetriNetUnfolder]: 58161/80793 cut-off events. [2022-12-13 18:46:26,410 INFO L131 PetriNetUnfolder]: For 19373/19614 co-relation queries the response was YES. [2022-12-13 18:46:26,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191881 conditions, 80793 events. 58161/80793 cut-off events. For 19373/19614 co-relation queries the response was YES. Maximal size of possible extension queue 3075. Compared 591182 event pairs, 12993 based on Foata normal form. 3/66663 useless extension candidates. Maximal degree in co-relation 191528. Up to 62407 conditions per place. [2022-12-13 18:46:26,755 INFO L137 encePairwiseOnDemand]: 363/367 looper letters, 97 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2022-12-13 18:46:26,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 109 transitions, 543 flow [2022-12-13 18:46:26,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:46:26,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:46:26,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2022-12-13 18:46:26,757 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5404178019981835 [2022-12-13 18:46:26,757 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2022-12-13 18:46:26,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2022-12-13 18:46:26,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:46:26,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2022-12-13 18:46:26,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 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) [2022-12-13 18:46:26,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 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) [2022-12-13 18:46:26,760 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 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) [2022-12-13 18:46:26,760 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 220 flow. Second operand 3 states and 595 transitions. [2022-12-13 18:46:26,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 109 transitions, 543 flow [2022-12-13 18:46:26,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 109 transitions, 540 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:46:26,791 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 229 flow [2022-12-13 18:46:26,791 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2022-12-13 18:46:26,791 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 9 predicate places. [2022-12-13 18:46:26,791 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 229 flow [2022-12-13 18:46:26,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 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) [2022-12-13 18:46:26,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:46:26,792 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:46:26,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 18:46:26,792 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 18:46:26,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:46:26,792 INFO L85 PathProgramCache]: Analyzing trace with hash -920667037, now seen corresponding path program 1 times [2022-12-13 18:46:26,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:46:26,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246626833] [2022-12-13 18:46:26,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:46:26,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:46:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:46:26,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:46:26,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:46:26,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246626833] [2022-12-13 18:46:26,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246626833] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:46:26,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:46:26,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:46:26,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833828401] [2022-12-13 18:46:26,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:46:26,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:46:26,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:46:26,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:46:26,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:46:27,017 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 367 [2022-12-13 18:46:27,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 229 flow. Second operand has 6 states, 6 states have (on average 159.33333333333334) internal successors, (956), 6 states have internal predecessors, (956), 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) [2022-12-13 18:46:27,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:46:27,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 367 [2022-12-13 18:46:27,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:46:35,031 INFO L130 PetriNetUnfolder]: 88520/127312 cut-off events. [2022-12-13 18:46:35,031 INFO L131 PetriNetUnfolder]: For 63082/63220 co-relation queries the response was YES. [2022-12-13 18:46:35,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308974 conditions, 127312 events. 88520/127312 cut-off events. For 63082/63220 co-relation queries the response was YES. Maximal size of possible extension queue 4810. Compared 982907 event pairs, 19718 based on Foata normal form. 28/109303 useless extension candidates. Maximal degree in co-relation 308877. Up to 73619 conditions per place. [2022-12-13 18:46:35,607 INFO L137 encePairwiseOnDemand]: 344/367 looper letters, 182 selfloop transitions, 40 changer transitions 0/230 dead transitions. [2022-12-13 18:46:35,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 230 transitions, 1199 flow [2022-12-13 18:46:35,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:46:35,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 18:46:35,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1648 transitions. [2022-12-13 18:46:35,611 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49894035725098396 [2022-12-13 18:46:35,611 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1648 transitions. [2022-12-13 18:46:35,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1648 transitions. [2022-12-13 18:46:35,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:46:35,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1648 transitions. [2022-12-13 18:46:35,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 183.11111111111111) internal successors, (1648), 9 states have internal predecessors, (1648), 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) [2022-12-13 18:46:35,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 367.0) internal successors, (3670), 10 states have internal predecessors, (3670), 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) [2022-12-13 18:46:35,617 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 367.0) internal successors, (3670), 10 states have internal predecessors, (3670), 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) [2022-12-13 18:46:35,617 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 229 flow. Second operand 9 states and 1648 transitions. [2022-12-13 18:46:35,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 230 transitions, 1199 flow [2022-12-13 18:46:35,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 230 transitions, 1181 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:46:35,650 INFO L231 Difference]: Finished difference. Result has 89 places, 99 transitions, 565 flow [2022-12-13 18:46:35,650 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=565, PETRI_PLACES=89, PETRI_TRANSITIONS=99} [2022-12-13 18:46:35,651 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 22 predicate places. [2022-12-13 18:46:35,651 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 99 transitions, 565 flow [2022-12-13 18:46:35,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.33333333333334) internal successors, (956), 6 states have internal predecessors, (956), 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) [2022-12-13 18:46:35,651 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:46:35,652 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:46:35,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 18:46:35,652 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 18:46:35,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:46:35,652 INFO L85 PathProgramCache]: Analyzing trace with hash -920667012, now seen corresponding path program 1 times [2022-12-13 18:46:35,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:46:35,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984654553] [2022-12-13 18:46:35,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:46:35,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:46:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:46:35,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:46:35,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:46:35,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984654553] [2022-12-13 18:46:35,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984654553] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:46:35,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:46:35,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:46:35,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406254256] [2022-12-13 18:46:35,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:46:35,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:46:35,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:46:35,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:46:35,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:46:35,730 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 367 [2022-12-13 18:46:35,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 99 transitions, 565 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 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) [2022-12-13 18:46:35,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:46:35,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 367 [2022-12-13 18:46:35,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:46:48,309 INFO L130 PetriNetUnfolder]: 116431/171367 cut-off events. [2022-12-13 18:46:48,309 INFO L131 PetriNetUnfolder]: For 251318/254424 co-relation queries the response was YES. [2022-12-13 18:46:48,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528474 conditions, 171367 events. 116431/171367 cut-off events. For 251318/254424 co-relation queries the response was YES. Maximal size of possible extension queue 6369. Compared 1426617 event pairs, 38187 based on Foata normal form. 7428/177939 useless extension candidates. Maximal degree in co-relation 528370. Up to 88866 conditions per place. [2022-12-13 18:46:49,237 INFO L137 encePairwiseOnDemand]: 349/367 looper letters, 132 selfloop transitions, 39 changer transitions 0/179 dead transitions. [2022-12-13 18:46:49,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 179 transitions, 1386 flow [2022-12-13 18:46:49,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:46:49,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:46:49,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 593 transitions. [2022-12-13 18:46:49,239 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5386012715712988 [2022-12-13 18:46:49,239 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 593 transitions. [2022-12-13 18:46:49,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 593 transitions. [2022-12-13 18:46:49,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:46:49,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 593 transitions. [2022-12-13 18:46:49,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 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) [2022-12-13 18:46:49,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 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) [2022-12-13 18:46:49,242 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 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) [2022-12-13 18:46:49,242 INFO L175 Difference]: Start difference. First operand has 89 places, 99 transitions, 565 flow. Second operand 3 states and 593 transitions. [2022-12-13 18:46:49,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 179 transitions, 1386 flow [2022-12-13 18:46:49,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 179 transitions, 1345 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-12-13 18:46:49,732 INFO L231 Difference]: Finished difference. Result has 91 places, 136 transitions, 1046 flow [2022-12-13 18:46:49,732 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1046, PETRI_PLACES=91, PETRI_TRANSITIONS=136} [2022-12-13 18:46:49,733 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 24 predicate places. [2022-12-13 18:46:49,733 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 136 transitions, 1046 flow [2022-12-13 18:46:49,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 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) [2022-12-13 18:46:49,733 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:46:49,733 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:46:49,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 18:46:49,733 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 18:46:49,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:46:49,733 INFO L85 PathProgramCache]: Analyzing trace with hash -760994794, now seen corresponding path program 1 times [2022-12-13 18:46:49,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:46:49,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15314905] [2022-12-13 18:46:49,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:46:49,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:46:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:46:49,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:46:49,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:46:49,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15314905] [2022-12-13 18:46:49,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15314905] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:46:49,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008653033] [2022-12-13 18:46:49,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:46:49,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:46:49,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:46:49,832 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:46:49,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 18:46:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:46:49,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 18:46:49,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:46:49,938 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 18:46:49,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 18:46:49,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 18:46:50,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-13 18:46:50,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 18:46:50,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:46:50,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:46:50,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008653033] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:46:50,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:46:50,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2022-12-13 18:46:50,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046099843] [2022-12-13 18:46:50,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:46:50,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:46:50,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:46:50,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:46:50,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:46:50,191 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 367 [2022-12-13 18:46:50,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 136 transitions, 1046 flow. Second operand has 6 states, 6 states have (on average 160.66666666666666) internal successors, (964), 6 states have internal predecessors, (964), 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) [2022-12-13 18:46:50,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:46:50,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 367 [2022-12-13 18:46:50,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:47:03,337 INFO L130 PetriNetUnfolder]: 113613/166342 cut-off events. [2022-12-13 18:47:03,337 INFO L131 PetriNetUnfolder]: For 403217/403839 co-relation queries the response was YES. [2022-12-13 18:47:03,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581478 conditions, 166342 events. 113613/166342 cut-off events. For 403217/403839 co-relation queries the response was YES. Maximal size of possible extension queue 6299. Compared 1360790 event pairs, 36524 based on Foata normal form. 638/166696 useless extension candidates. Maximal degree in co-relation 581366. Up to 156128 conditions per place. [2022-12-13 18:47:04,283 INFO L137 encePairwiseOnDemand]: 357/367 looper letters, 193 selfloop transitions, 47 changer transitions 0/248 dead transitions. [2022-12-13 18:47:04,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 248 transitions, 2305 flow [2022-12-13 18:47:04,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:47:04,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:47:04,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1080 transitions. [2022-12-13 18:47:04,286 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4904632152588556 [2022-12-13 18:47:04,286 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1080 transitions. [2022-12-13 18:47:04,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1080 transitions. [2022-12-13 18:47:04,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:47:04,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1080 transitions. [2022-12-13 18:47:04,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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) [2022-12-13 18:47:04,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 367.0) internal successors, (2569), 7 states have internal predecessors, (2569), 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) [2022-12-13 18:47:04,291 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 367.0) internal successors, (2569), 7 states have internal predecessors, (2569), 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) [2022-12-13 18:47:04,291 INFO L175 Difference]: Start difference. First operand has 91 places, 136 transitions, 1046 flow. Second operand 6 states and 1080 transitions. [2022-12-13 18:47:04,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 248 transitions, 2305 flow [2022-12-13 18:47:05,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 248 transitions, 2177 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:47:05,169 INFO L231 Difference]: Finished difference. Result has 96 places, 169 transitions, 1436 flow [2022-12-13 18:47:05,169 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=968, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1436, PETRI_PLACES=96, PETRI_TRANSITIONS=169} [2022-12-13 18:47:05,169 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 29 predicate places. [2022-12-13 18:47:05,169 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 169 transitions, 1436 flow [2022-12-13 18:47:05,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.66666666666666) internal successors, (964), 6 states have internal predecessors, (964), 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) [2022-12-13 18:47:05,169 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:47:05,169 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:47:05,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 18:47:05,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 18:47:05,371 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 18:47:05,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:47:05,372 INFO L85 PathProgramCache]: Analyzing trace with hash -760994769, now seen corresponding path program 1 times [2022-12-13 18:47:05,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:47:05,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583784611] [2022-12-13 18:47:05,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:47:05,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:47:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:47:05,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:47:05,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:47:05,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583784611] [2022-12-13 18:47:05,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583784611] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:47:05,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112344689] [2022-12-13 18:47:05,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:47:05,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:47:05,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:47:05,478 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:47:05,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 18:47:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:47:05,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 18:47:05,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:47:05,555 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 18:47:05,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 18:47:05,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 18:47:05,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 18:47:05,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:47:05,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:47:05,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112344689] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:47:05,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:47:05,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2022-12-13 18:47:05,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224626891] [2022-12-13 18:47:05,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:47:05,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:47:05,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:47:05,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:47:05,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:47:05,691 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 367 [2022-12-13 18:47:05,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 169 transitions, 1436 flow. Second operand has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:47:05,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:47:05,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 367 [2022-12-13 18:47:05,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:47:21,782 INFO L130 PetriNetUnfolder]: 120792/179823 cut-off events. [2022-12-13 18:47:21,782 INFO L131 PetriNetUnfolder]: For 450669/454377 co-relation queries the response was YES. [2022-12-13 18:47:22,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 629763 conditions, 179823 events. 120792/179823 cut-off events. For 450669/454377 co-relation queries the response was YES. Maximal size of possible extension queue 6912. Compared 1535405 event pairs, 40999 based on Foata normal form. 1589/180778 useless extension candidates. Maximal degree in co-relation 629647. Up to 92789 conditions per place. [2022-12-13 18:47:22,931 INFO L137 encePairwiseOnDemand]: 349/367 looper letters, 307 selfloop transitions, 72 changer transitions 0/387 dead transitions. [2022-12-13 18:47:22,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 387 transitions, 3787 flow [2022-12-13 18:47:22,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:47:22,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:47:22,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 984 transitions. [2022-12-13 18:47:22,933 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5362397820163488 [2022-12-13 18:47:22,934 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 984 transitions. [2022-12-13 18:47:22,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 984 transitions. [2022-12-13 18:47:22,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:47:22,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 984 transitions. [2022-12-13 18:47:22,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 196.8) internal successors, (984), 5 states have internal predecessors, (984), 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) [2022-12-13 18:47:22,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 367.0) internal successors, (2202), 6 states have internal predecessors, (2202), 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) [2022-12-13 18:47:22,938 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 367.0) internal successors, (2202), 6 states have internal predecessors, (2202), 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) [2022-12-13 18:47:22,938 INFO L175 Difference]: Start difference. First operand has 96 places, 169 transitions, 1436 flow. Second operand 5 states and 984 transitions. [2022-12-13 18:47:22,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 387 transitions, 3787 flow [2022-12-13 18:47:24,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 387 transitions, 3740 flow, removed 16 selfloop flow, removed 2 redundant places. [2022-12-13 18:47:24,177 INFO L231 Difference]: Finished difference. Result has 101 places, 215 transitions, 2177 flow [2022-12-13 18:47:24,177 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=1377, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2177, PETRI_PLACES=101, PETRI_TRANSITIONS=215} [2022-12-13 18:47:24,177 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 34 predicate places. [2022-12-13 18:47:24,177 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 215 transitions, 2177 flow [2022-12-13 18:47:24,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:47:24,178 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:47:24,178 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 18:47:24,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 18:47:24,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0217d6-f307-4817-a6d9-cb7f121e2403/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 18:47:24,379 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 18:47:24,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:47:24,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1303332805, now seen corresponding path program 1 times [2022-12-13 18:47:24,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:47:24,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584981995] [2022-12-13 18:47:24,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:47:24,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:47:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:47:24,412 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:47:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:47:24,428 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:47:24,428 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:47:24,428 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-12-13 18:47:24,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2022-12-13 18:47:24,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2022-12-13 18:47:24,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2022-12-13 18:47:24,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2022-12-13 18:47:24,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2022-12-13 18:47:24,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2022-12-13 18:47:24,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2022-12-13 18:47:24,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2022-12-13 18:47:24,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2022-12-13 18:47:24,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2022-12-13 18:47:24,430 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2022-12-13 18:47:24,430 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2022-12-13 18:47:24,430 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2022-12-13 18:47:24,430 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2022-12-13 18:47:24,430 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2022-12-13 18:47:24,430 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2022-12-13 18:47:24,430 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2022-12-13 18:47:24,430 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2022-12-13 18:47:24,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 18:47:24,430 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:47:24,431 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 18:47:24,431 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 18:47:24,452 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 18:47:24,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 240 transitions, 512 flow [2022-12-13 18:47:24,495 INFO L130 PetriNetUnfolder]: 44/399 cut-off events. [2022-12-13 18:47:24,495 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 18:47:24,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 399 events. 44/399 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1361 event pairs, 0 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 324. Up to 10 conditions per place. [2022-12-13 18:47:24,498 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 240 transitions, 512 flow [2022-12-13 18:47:24,502 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 221 places, 240 transitions, 512 flow [2022-12-13 18:47:24,502 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:47:24,502 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 221 places, 240 transitions, 512 flow [2022-12-13 18:47:24,502 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 221 places, 240 transitions, 512 flow [2022-12-13 18:47:24,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 240 transitions, 512 flow [2022-12-13 18:47:24,549 INFO L130 PetriNetUnfolder]: 44/399 cut-off events. [2022-12-13 18:47:24,549 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 18:47:24,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 399 events. 44/399 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1361 event pairs, 0 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 324. Up to 10 conditions per place. [2022-12-13 18:47:24,572 INFO L119 LiptonReduction]: Number of co-enabled transitions 33440 [2022-12-13 18:47:27,220 INFO L134 LiptonReduction]: Checked pairs total: 77751 [2022-12-13 18:47:27,220 INFO L136 LiptonReduction]: Total number of compositions: 199 [2022-12-13 18:47:27,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:47:27,222 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;@27afa2f6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:47:27,222 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-12-13 18:47:27,224 INFO L130 PetriNetUnfolder]: 3/13 cut-off events. [2022-12-13 18:47:27,224 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:47:27,224 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:47:27,224 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 18:47:27,224 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2022-12-13 18:47:27,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:47:27,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1607678986, now seen corresponding path program 1 times [2022-12-13 18:47:27,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:47:27,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477073286] [2022-12-13 18:47:27,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:47:27,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:47:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:47:27,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:47:27,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:47:27,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477073286] [2022-12-13 18:47:27,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477073286] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:47:27,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:47:27,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:47:27,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690690726] [2022-12-13 18:47:27,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:47:27,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:47:27,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:47:27,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:47:27,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:47:27,254 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 439 [2022-12-13 18:47:27,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 103 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 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) [2022-12-13 18:47:27,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:47:27,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 439 [2022-12-13 18:47:27,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:49:13,186 INFO L130 PetriNetUnfolder]: 1306042/1683720 cut-off events. [2022-12-13 18:49:13,186 INFO L131 PetriNetUnfolder]: For 29266/29266 co-relation queries the response was YES. [2022-12-13 18:49:15,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3373840 conditions, 1683720 events. 1306042/1683720 cut-off events. For 29266/29266 co-relation queries the response was YES. Maximal size of possible extension queue 49971. Compared 13383947 event pairs, 1277675 based on Foata normal form. 253942/1397325 useless extension candidates. Maximal degree in co-relation 207228. Up to 1674671 conditions per place. [2022-12-13 18:49:21,309 INFO L137 encePairwiseOnDemand]: 407/439 looper letters, 77 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2022-12-13 18:49:21,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 90 transitions, 370 flow [2022-12-13 18:49:21,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:49:21,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:49:21,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 724 transitions. [2022-12-13 18:49:21,311 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5497342444950646 [2022-12-13 18:49:21,311 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 724 transitions. [2022-12-13 18:49:21,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 724 transitions. [2022-12-13 18:49:21,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:49:21,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 724 transitions. [2022-12-13 18:49:21,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.33333333333334) internal successors, (724), 3 states have internal predecessors, (724), 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) [2022-12-13 18:49:21,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 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) [2022-12-13 18:49:21,316 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 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) [2022-12-13 18:49:21,316 INFO L175 Difference]: Start difference. First operand has 85 places, 103 transitions, 238 flow. Second operand 3 states and 724 transitions. [2022-12-13 18:49:21,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 90 transitions, 370 flow [2022-12-13 18:49:21,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 90 transitions, 358 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-12-13 18:49:21,330 INFO L231 Difference]: Finished difference. Result has 88 places, 77 transitions, 188 flow [2022-12-13 18:49:21,330 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=88, PETRI_TRANSITIONS=77} [2022-12-13 18:49:21,331 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, 3 predicate places. [2022-12-13 18:49:21,331 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 77 transitions, 188 flow [2022-12-13 18:49:21,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 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) [2022-12-13 18:49:21,331 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:49:21,331 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:49:21,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 18:49:21,331 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2022-12-13 18:49:21,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:49:21,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1198628154, now seen corresponding path program 1 times [2022-12-13 18:49:21,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:49:21,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360886528] [2022-12-13 18:49:21,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:49:21,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:49:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:49:21,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:49:21,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:49:21,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360886528] [2022-12-13 18:49:21,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360886528] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:49:21,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:49:21,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:49:21,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736541299] [2022-12-13 18:49:21,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:49:21,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:49:21,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:49:21,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:49:21,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:49:21,460 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 439 [2022-12-13 18:49:21,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 77 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 195.25) internal successors, (781), 4 states have internal predecessors, (781), 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) [2022-12-13 18:49:21,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:49:21,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 439 [2022-12-13 18:49:21,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand