./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68208164-a08a-4a42-aa35-4ab52b7a094c/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68208164-a08a-4a42-aa35-4ab52b7a094c/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68208164-a08a-4a42-aa35-4ab52b7a094c/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68208164-a08a-4a42-aa35-4ab52b7a094c/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/queue_longest.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68208164-a08a-4a42-aa35-4ab52b7a094c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68208164-a08a-4a42-aa35-4ab52b7a094c/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:12:54,975 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:12:55,155 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68208164-a08a-4a42-aa35-4ab52b7a094c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 05:12:55,162 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:12:55,166 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:12:55,214 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:12:55,214 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:12:55,215 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:12:55,216 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:12:55,223 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:12:55,223 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:12:55,224 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:12:55,225 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:12:55,227 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:12:55,228 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:12:55,228 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:12:55,229 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:12:55,229 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:12:55,230 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:12:55,230 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:12:55,231 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:12:55,231 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:12:55,235 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:12:55,235 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:12:55,236 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:12:55,236 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:12:55,237 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:12:55,237 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:12:55,238 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:12:55,238 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:12:55,240 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:12:55,240 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:12:55,241 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:12:55,241 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:12:55,241 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:12:55,241 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:12:55,242 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:12:55,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:12:55,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:12:55,243 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:12:55,243 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:12:55,244 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:12:55,244 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:12:55,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:12:55,245 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:12:55,245 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:12:55,245 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:12:55,247 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_68208164-a08a-4a42-aa35-4ab52b7a094c/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68208164-a08a-4a42-aa35-4ab52b7a094c/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 [2023-11-19 05:12:55,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:12:55,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:12:55,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:12:55,645 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:12:55,646 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:12:55,647 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68208164-a08a-4a42-aa35-4ab52b7a094c/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/pthread/queue_longest.i [2023-11-19 05:12:58,931 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:12:59,240 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:12:59,241 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68208164-a08a-4a42-aa35-4ab52b7a094c/sv-benchmarks/c/pthread/queue_longest.i [2023-11-19 05:12:59,262 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68208164-a08a-4a42-aa35-4ab52b7a094c/bin/utaipan-verify-t7M7D8N6sZ/data/5bcb9a057/11a3f46f512a481cabd0d9c95fdc635a/FLAG80a7dbe97 [2023-11-19 05:12:59,279 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68208164-a08a-4a42-aa35-4ab52b7a094c/bin/utaipan-verify-t7M7D8N6sZ/data/5bcb9a057/11a3f46f512a481cabd0d9c95fdc635a [2023-11-19 05:12:59,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:12:59,284 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:12:59,286 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:12:59,286 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:12:59,292 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:12:59,293 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:12:59" (1/1) ... [2023-11-19 05:12:59,294 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@111cf5fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:59, skipping insertion in model container [2023-11-19 05:12:59,295 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:12:59" (1/1) ... [2023-11-19 05:12:59,371 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:12:59,950 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:12:59,967 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:13:00,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:13:00,120 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:13:00,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:00 WrapperNode [2023-11-19 05:13:00,120 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:13:00,122 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:13:00,122 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:13:00,122 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:13:00,129 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:00" (1/1) ... [2023-11-19 05:13:00,151 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:00" (1/1) ... [2023-11-19 05:13:00,193 INFO L138 Inliner]: procedures = 274, calls = 63, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 269 [2023-11-19 05:13:00,194 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:13:00,195 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:13:00,195 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:13:00,195 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:13:00,217 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:00" (1/1) ... [2023-11-19 05:13:00,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:00" (1/1) ... [2023-11-19 05:13:00,234 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:00" (1/1) ... [2023-11-19 05:13:00,250 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:00" (1/1) ... [2023-11-19 05:13:00,276 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:00" (1/1) ... [2023-11-19 05:13:00,280 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:00" (1/1) ... [2023-11-19 05:13:00,285 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:00" (1/1) ... [2023-11-19 05:13:00,287 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:00" (1/1) ... [2023-11-19 05:13:00,294 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:13:00,295 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:13:00,295 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:13:00,295 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:13:00,296 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:00" (1/1) ... [2023-11-19 05:13:00,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:13:00,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68208164-a08a-4a42-aa35-4ab52b7a094c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:13:00,339 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68208164-a08a-4a42-aa35-4ab52b7a094c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:13:00,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68208164-a08a-4a42-aa35-4ab52b7a094c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:13:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-19 05:13:00,457 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-19 05:13:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-19 05:13:00,458 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-19 05:13:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:13:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:13:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:13:00,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:13:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 05:13:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:13:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:13:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:13:00,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:13:00,465 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 05:13:00,730 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:13:00,733 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:13:01,217 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:13:01,240 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:13:01,241 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 05:13:01,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:13:01 BoogieIcfgContainer [2023-11-19 05:13:01,249 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:13:01,251 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:13:01,252 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:13:01,257 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:13:01,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:12:59" (1/3) ... [2023-11-19 05:13:01,259 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1689592b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:13:01, skipping insertion in model container [2023-11-19 05:13:01,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:00" (2/3) ... [2023-11-19 05:13:01,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1689592b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:13:01, skipping insertion in model container [2023-11-19 05:13:01,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:13:01" (3/3) ... [2023-11-19 05:13:01,263 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2023-11-19 05:13:01,272 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 05:13:01,283 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:13:01,283 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-19 05:13:01,284 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 05:13:01,435 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 05:13:01,476 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:13:01,493 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 307 places, 318 transitions, 650 flow [2023-11-19 05:13:01,497 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 307 places, 318 transitions, 650 flow [2023-11-19 05:13:01,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 318 transitions, 650 flow [2023-11-19 05:13:01,765 INFO L124 PetriNetUnfolderBase]: 18/316 cut-off events. [2023-11-19 05:13:01,765 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 05:13:01,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 316 events. 18/316 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 520 event pairs, 0 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 235. Up to 2 conditions per place. [2023-11-19 05:13:01,805 INFO L119 LiptonReduction]: Number of co-enabled transitions 25932 [2023-11-19 05:13:12,594 INFO L134 LiptonReduction]: Checked pairs total: 52886 [2023-11-19 05:13:12,595 INFO L136 LiptonReduction]: Total number of compositions: 315 [2023-11-19 05:13:12,603 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 80 transitions, 174 flow [2023-11-19 05:13:12,728 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1882 states, 1792 states have (on average 2.8286830357142856) internal successors, (5069), 1881 states have internal predecessors, (5069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:12,747 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:13:12,753 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@767159b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:13:12,754 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-19 05:13:12,762 INFO L276 IsEmpty]: Start isEmpty. Operand has 1882 states, 1792 states have (on average 2.8286830357142856) internal successors, (5069), 1881 states have internal predecessors, (5069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:12,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:13:12,768 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:12,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:13:12,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 05:13:12,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:12,774 INFO L85 PathProgramCache]: Analyzing trace with hash -906183935, now seen corresponding path program 1 times [2023-11-19 05:13:12,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:12,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396555242] [2023-11-19 05:13:12,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:12,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:13,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:13,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:13,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396555242] [2023-11-19 05:13:13,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396555242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:13,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:13,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:13:13,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150651222] [2023-11-19 05:13:13,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:13,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:13:13,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:13,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:13:13,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:13:13,824 INFO L87 Difference]: Start difference. First operand has 1882 states, 1792 states have (on average 2.8286830357142856) internal successors, (5069), 1881 states have internal predecessors, (5069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:14,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:14,208 INFO L93 Difference]: Finished difference Result 1880 states and 4939 transitions. [2023-11-19 05:13:14,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:13:14,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 05:13:14,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:14,243 INFO L225 Difference]: With dead ends: 1880 [2023-11-19 05:13:14,243 INFO L226 Difference]: Without dead ends: 1880 [2023-11-19 05:13:14,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:13:14,248 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:14,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:13:14,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2023-11-19 05:13:14,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1880. [2023-11-19 05:13:14,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1790 states have (on average 2.7592178770949722) internal successors, (4939), 1879 states have internal predecessors, (4939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:14,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 4939 transitions. [2023-11-19 05:13:14,399 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 4939 transitions. Word has length 6 [2023-11-19 05:13:14,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:14,399 INFO L495 AbstractCegarLoop]: Abstraction has 1880 states and 4939 transitions. [2023-11-19 05:13:14,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:14,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 4939 transitions. [2023-11-19 05:13:14,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:13:14,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:14,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:14,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:13:14,404 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 05:13:14,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:14,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1973516272, now seen corresponding path program 1 times [2023-11-19 05:13:14,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:14,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526426475] [2023-11-19 05:13:14,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:14,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:14,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:14,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:14,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526426475] [2023-11-19 05:13:14,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526426475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:14,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:14,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:13:14,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674001749] [2023-11-19 05:13:14,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:14,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:13:14,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:14,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:13:14,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:13:14,958 INFO L87 Difference]: Start difference. First operand 1880 states and 4939 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:15,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:15,427 INFO L93 Difference]: Finished difference Result 2021 states and 5304 transitions. [2023-11-19 05:13:15,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:13:15,428 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 05:13:15,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:15,447 INFO L225 Difference]: With dead ends: 2021 [2023-11-19 05:13:15,447 INFO L226 Difference]: Without dead ends: 2021 [2023-11-19 05:13:15,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:13:15,449 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 63 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:15,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 23 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:13:15,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2023-11-19 05:13:15,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 1970. [2023-11-19 05:13:15,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1970 states, 1880 states have (on average 2.751595744680851) internal successors, (5173), 1969 states have internal predecessors, (5173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:15,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 5173 transitions. [2023-11-19 05:13:15,534 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 5173 transitions. Word has length 7 [2023-11-19 05:13:15,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:15,535 INFO L495 AbstractCegarLoop]: Abstraction has 1970 states and 5173 transitions. [2023-11-19 05:13:15,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:15,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 5173 transitions. [2023-11-19 05:13:15,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:13:15,537 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:15,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:15,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:13:15,538 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 05:13:15,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:15,539 INFO L85 PathProgramCache]: Analyzing trace with hash 432808760, now seen corresponding path program 1 times [2023-11-19 05:13:15,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:15,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628597203] [2023-11-19 05:13:15,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:15,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:15,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:15,592 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:15,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628597203] [2023-11-19 05:13:15,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628597203] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:15,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:15,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:13:15,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28086559] [2023-11-19 05:13:15,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:15,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:13:15,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:15,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:13:15,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:15,596 INFO L87 Difference]: Start difference. First operand 1970 states and 5173 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:15,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:15,840 INFO L93 Difference]: Finished difference Result 3434 states and 9083 transitions. [2023-11-19 05:13:15,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:13:15,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 05:13:15,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:15,874 INFO L225 Difference]: With dead ends: 3434 [2023-11-19 05:13:15,875 INFO L226 Difference]: Without dead ends: 3434 [2023-11-19 05:13:15,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:15,877 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 63 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:15,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 19 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:13:15,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2023-11-19 05:13:15,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 3114. [2023-11-19 05:13:15,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3114 states, 3024 states have (on average 2.8382936507936507) internal successors, (8583), 3113 states have internal predecessors, (8583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:16,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3114 states to 3114 states and 8583 transitions. [2023-11-19 05:13:16,014 INFO L78 Accepts]: Start accepts. Automaton has 3114 states and 8583 transitions. Word has length 8 [2023-11-19 05:13:16,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:16,015 INFO L495 AbstractCegarLoop]: Abstraction has 3114 states and 8583 transitions. [2023-11-19 05:13:16,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:16,015 INFO L276 IsEmpty]: Start isEmpty. Operand 3114 states and 8583 transitions. [2023-11-19 05:13:16,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:13:16,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:16,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:16,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:13:16,017 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 05:13:16,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:16,018 INFO L85 PathProgramCache]: Analyzing trace with hash 2040757740, now seen corresponding path program 1 times [2023-11-19 05:13:16,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:16,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638477150] [2023-11-19 05:13:16,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:16,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:16,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:16,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:16,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638477150] [2023-11-19 05:13:16,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638477150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:16,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:16,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:13:16,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045654628] [2023-11-19 05:13:16,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:16,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:13:16,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:16,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:13:16,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:13:16,531 INFO L87 Difference]: Start difference. First operand 3114 states and 8583 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:16,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:16,882 INFO L93 Difference]: Finished difference Result 3377 states and 9159 transitions. [2023-11-19 05:13:16,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:13:16,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 05:13:16,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:16,912 INFO L225 Difference]: With dead ends: 3377 [2023-11-19 05:13:16,912 INFO L226 Difference]: Without dead ends: 3377 [2023-11-19 05:13:16,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:13:16,914 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 26 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:16,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 27 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:13:16,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3377 states. [2023-11-19 05:13:17,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3377 to 3111. [2023-11-19 05:13:17,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3111 states, 3021 states have (on average 2.8387951009599472) internal successors, (8576), 3110 states have internal predecessors, (8576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:17,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 8576 transitions. [2023-11-19 05:13:17,042 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 8576 transitions. Word has length 9 [2023-11-19 05:13:17,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:17,042 INFO L495 AbstractCegarLoop]: Abstraction has 3111 states and 8576 transitions. [2023-11-19 05:13:17,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:17,043 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 8576 transitions. [2023-11-19 05:13:17,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:13:17,044 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:17,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:17,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:13:17,045 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 05:13:17,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:17,045 INFO L85 PathProgramCache]: Analyzing trace with hash 529093977, now seen corresponding path program 1 times [2023-11-19 05:13:17,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:17,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864561323] [2023-11-19 05:13:17,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:17,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:17,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:17,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:17,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864561323] [2023-11-19 05:13:17,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864561323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:17,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:17,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:13:17,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853631285] [2023-11-19 05:13:17,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:17,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:13:17,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:17,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:13:17,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:17,149 INFO L87 Difference]: Start difference. First operand 3111 states and 8576 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:17,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:17,315 INFO L93 Difference]: Finished difference Result 2873 states and 7689 transitions. [2023-11-19 05:13:17,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:13:17,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 05:13:17,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:17,342 INFO L225 Difference]: With dead ends: 2873 [2023-11-19 05:13:17,342 INFO L226 Difference]: Without dead ends: 2865 [2023-11-19 05:13:17,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:17,344 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 50 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:17,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 12 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:13:17,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2023-11-19 05:13:17,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2705. [2023-11-19 05:13:17,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 2627 states have (on average 2.832508564902931) internal successors, (7441), 2704 states have internal predecessors, (7441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:17,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 7441 transitions. [2023-11-19 05:13:17,497 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 7441 transitions. Word has length 9 [2023-11-19 05:13:17,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:17,497 INFO L495 AbstractCegarLoop]: Abstraction has 2705 states and 7441 transitions. [2023-11-19 05:13:17,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:17,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 7441 transitions. [2023-11-19 05:13:17,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 05:13:17,503 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:17,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:17,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:13:17,504 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 05:13:17,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:17,508 INFO L85 PathProgramCache]: Analyzing trace with hash -782113123, now seen corresponding path program 1 times [2023-11-19 05:13:17,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:17,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782016552] [2023-11-19 05:13:17,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:17,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:17,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:17,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:17,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782016552] [2023-11-19 05:13:17,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782016552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:17,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:17,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 05:13:17,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858660571] [2023-11-19 05:13:17,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:17,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:13:17,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:17,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:13:17,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:13:17,980 INFO L87 Difference]: Start difference. First operand 2705 states and 7441 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:18,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:18,307 INFO L93 Difference]: Finished difference Result 2805 states and 7689 transitions. [2023-11-19 05:13:18,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:13:18,308 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-19 05:13:18,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:18,337 INFO L225 Difference]: With dead ends: 2805 [2023-11-19 05:13:18,337 INFO L226 Difference]: Without dead ends: 2805 [2023-11-19 05:13:18,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:13:18,338 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 83 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:18,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 23 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:13:18,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2805 states. [2023-11-19 05:13:18,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2805 to 2780. [2023-11-19 05:13:18,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2780 states, 2702 states have (on average 2.8227239082161364) internal successors, (7627), 2779 states have internal predecessors, (7627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:18,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 7627 transitions. [2023-11-19 05:13:18,444 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 7627 transitions. Word has length 10 [2023-11-19 05:13:18,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:18,445 INFO L495 AbstractCegarLoop]: Abstraction has 2780 states and 7627 transitions. [2023-11-19 05:13:18,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:18,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 7627 transitions. [2023-11-19 05:13:18,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 05:13:18,447 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:18,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:18,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:13:18,448 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 05:13:18,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:18,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1161018175, now seen corresponding path program 2 times [2023-11-19 05:13:18,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:18,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086463413] [2023-11-19 05:13:18,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:18,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:18,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:18,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086463413] [2023-11-19 05:13:18,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086463413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:18,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:18,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:13:18,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761820253] [2023-11-19 05:13:18,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:18,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:13:18,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:18,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:13:18,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:13:18,830 INFO L87 Difference]: Start difference. First operand 2780 states and 7627 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:19,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:19,068 INFO L93 Difference]: Finished difference Result 2709 states and 7418 transitions. [2023-11-19 05:13:19,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:13:19,068 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-19 05:13:19,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:19,109 INFO L225 Difference]: With dead ends: 2709 [2023-11-19 05:13:19,109 INFO L226 Difference]: Without dead ends: 2709 [2023-11-19 05:13:19,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:13:19,111 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 73 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:19,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 18 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:13:19,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2709 states. [2023-11-19 05:13:19,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2709 to 2634. [2023-11-19 05:13:19,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2634 states, 2564 states have (on average 2.8205928237129485) internal successors, (7232), 2633 states have internal predecessors, (7232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:19,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2634 states to 2634 states and 7232 transitions. [2023-11-19 05:13:19,252 INFO L78 Accepts]: Start accepts. Automaton has 2634 states and 7232 transitions. Word has length 10 [2023-11-19 05:13:19,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:19,252 INFO L495 AbstractCegarLoop]: Abstraction has 2634 states and 7232 transitions. [2023-11-19 05:13:19,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:19,252 INFO L276 IsEmpty]: Start isEmpty. Operand 2634 states and 7232 transitions. [2023-11-19 05:13:19,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:13:19,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:19,253 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:19,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 05:13:19,254 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 05:13:19,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:19,255 INFO L85 PathProgramCache]: Analyzing trace with hash 318723039, now seen corresponding path program 1 times [2023-11-19 05:13:19,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:19,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686214147] [2023-11-19 05:13:19,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:19,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:19,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:19,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:19,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686214147] [2023-11-19 05:13:19,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686214147] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:13:19,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703744705] [2023-11-19 05:13:19,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:19,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:13:19,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68208164-a08a-4a42-aa35-4ab52b7a094c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:13:19,319 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68208164-a08a-4a42-aa35-4ab52b7a094c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:13:19,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68208164-a08a-4a42-aa35-4ab52b7a094c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:13:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:19,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:13:19,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:13:19,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:19,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:13:19,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703744705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:19,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:13:19,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 05:13:19,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258977647] [2023-11-19 05:13:19,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:19,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:13:19,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:19,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:13:19,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:13:19,521 INFO L87 Difference]: Start difference. First operand 2634 states and 7232 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:19,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:19,813 INFO L93 Difference]: Finished difference Result 2770 states and 7309 transitions. [2023-11-19 05:13:19,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:13:19,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-19 05:13:19,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:19,827 INFO L225 Difference]: With dead ends: 2770 [2023-11-19 05:13:19,827 INFO L226 Difference]: Without dead ends: 2770 [2023-11-19 05:13:19,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:13:19,828 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 118 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:19,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 31 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:13:19,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2770 states. [2023-11-19 05:13:19,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2770 to 2562. [2023-11-19 05:13:19,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2562 states, 2501 states have (on average 2.799280287884846) internal successors, (7001), 2561 states have internal predecessors, (7001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:19,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 7001 transitions. [2023-11-19 05:13:19,925 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 7001 transitions. Word has length 11 [2023-11-19 05:13:19,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:19,926 INFO L495 AbstractCegarLoop]: Abstraction has 2562 states and 7001 transitions. [2023-11-19 05:13:19,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:19,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 7001 transitions. [2023-11-19 05:13:19,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:13:19,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:19,927 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:19,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68208164-a08a-4a42-aa35-4ab52b7a094c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:13:20,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68208164-a08a-4a42-aa35-4ab52b7a094c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:13:20,149 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 05:13:20,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:20,149 INFO L85 PathProgramCache]: Analyzing trace with hash 318723129, now seen corresponding path program 1 times [2023-11-19 05:13:20,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:20,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091312368] [2023-11-19 05:13:20,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:20,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:20,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:13:20,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:20,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091312368] [2023-11-19 05:13:20,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091312368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:20,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:20,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:13:20,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851404216] [2023-11-19 05:13:20,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:20,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:13:20,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:20,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:13:20,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:20,201 INFO L87 Difference]: Start difference. First operand 2562 states and 7001 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:20,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:20,378 INFO L93 Difference]: Finished difference Result 2490 states and 6770 transitions. [2023-11-19 05:13:20,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:13:20,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-19 05:13:20,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:20,390 INFO L225 Difference]: With dead ends: 2490 [2023-11-19 05:13:20,390 INFO L226 Difference]: Without dead ends: 2420 [2023-11-19 05:13:20,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:20,392 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 57 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:20,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 17 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:13:20,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2023-11-19 05:13:20,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 1576. [2023-11-19 05:13:20,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1524 states have (on average 2.776246719160105) internal successors, (4231), 1575 states have internal predecessors, (4231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:20,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 4231 transitions. [2023-11-19 05:13:20,455 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 4231 transitions. Word has length 11 [2023-11-19 05:13:20,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:20,456 INFO L495 AbstractCegarLoop]: Abstraction has 1576 states and 4231 transitions. [2023-11-19 05:13:20,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:20,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 4231 transitions. [2023-11-19 05:13:20,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 05:13:20,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:20,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:20,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 05:13:20,458 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 05:13:20,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:20,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1363611885, now seen corresponding path program 1 times [2023-11-19 05:13:20,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:20,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141576790] [2023-11-19 05:13:20,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:20,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:20,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:20,521 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:20,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141576790] [2023-11-19 05:13:20,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141576790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:20,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:20,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:13:20,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936634947] [2023-11-19 05:13:20,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:20,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:13:20,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:20,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:13:20,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:20,523 INFO L87 Difference]: Start difference. First operand 1576 states and 4231 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:20,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:20,712 INFO L93 Difference]: Finished difference Result 1948 states and 5225 transitions. [2023-11-19 05:13:20,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:13:20,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-19 05:13:20,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:20,721 INFO L225 Difference]: With dead ends: 1948 [2023-11-19 05:13:20,722 INFO L226 Difference]: Without dead ends: 1948 [2023-11-19 05:13:20,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:20,723 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 42 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:20,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 15 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:13:20,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2023-11-19 05:13:20,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1884. [2023-11-19 05:13:20,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1884 states, 1832 states have (on average 2.7974890829694323) internal successors, (5125), 1883 states have internal predecessors, (5125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:20,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 5125 transitions. [2023-11-19 05:13:20,785 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 5125 transitions. Word has length 17 [2023-11-19 05:13:20,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:20,786 INFO L495 AbstractCegarLoop]: Abstraction has 1884 states and 5125 transitions. [2023-11-19 05:13:20,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:20,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 5125 transitions. [2023-11-19 05:13:20,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 05:13:20,787 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:20,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:20,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 05:13:20,788 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 05:13:20,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:20,789 INFO L85 PathProgramCache]: Analyzing trace with hash 675039878, now seen corresponding path program 1 times [2023-11-19 05:13:20,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:20,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103749211] [2023-11-19 05:13:20,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:20,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:21,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:21,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:21,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103749211] [2023-11-19 05:13:21,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103749211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:21,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:21,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 05:13:21,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448338357] [2023-11-19 05:13:21,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:21,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 05:13:21,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:21,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 05:13:21,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-19 05:13:21,490 INFO L87 Difference]: Start difference. First operand 1884 states and 5125 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:22,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:22,612 INFO L93 Difference]: Finished difference Result 3534 states and 9663 transitions. [2023-11-19 05:13:22,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 05:13:22,613 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-19 05:13:22,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:22,628 INFO L225 Difference]: With dead ends: 3534 [2023-11-19 05:13:22,629 INFO L226 Difference]: Without dead ends: 3534 [2023-11-19 05:13:22,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-11-19 05:13:22,630 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 277 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:22,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 109 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 05:13:22,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3534 states. [2023-11-19 05:13:22,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3534 to 3004. [2023-11-19 05:13:22,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3004 states, 2952 states have (on average 2.9495257452574526) internal successors, (8707), 3003 states have internal predecessors, (8707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:22,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3004 states to 3004 states and 8707 transitions. [2023-11-19 05:13:22,747 INFO L78 Accepts]: Start accepts. Automaton has 3004 states and 8707 transitions. Word has length 18 [2023-11-19 05:13:22,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:22,747 INFO L495 AbstractCegarLoop]: Abstraction has 3004 states and 8707 transitions. [2023-11-19 05:13:22,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:22,748 INFO L276 IsEmpty]: Start isEmpty. Operand 3004 states and 8707 transitions. [2023-11-19 05:13:22,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 05:13:22,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:22,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:22,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 05:13:22,750 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 05:13:22,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:22,751 INFO L85 PathProgramCache]: Analyzing trace with hash 675039923, now seen corresponding path program 1 times [2023-11-19 05:13:22,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:22,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468260274] [2023-11-19 05:13:22,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:22,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:22,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:23,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:23,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:23,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468260274] [2023-11-19 05:13:23,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468260274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:23,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:23,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-19 05:13:23,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609483980] [2023-11-19 05:13:23,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:23,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 05:13:23,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:23,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 05:13:23,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:13:23,968 INFO L87 Difference]: Start difference. First operand 3004 states and 8707 transitions. Second operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:24,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:24,775 INFO L93 Difference]: Finished difference Result 3003 states and 8704 transitions. [2023-11-19 05:13:24,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 05:13:24,776 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-19 05:13:24,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:24,790 INFO L225 Difference]: With dead ends: 3003 [2023-11-19 05:13:24,790 INFO L226 Difference]: Without dead ends: 3003 [2023-11-19 05:13:24,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2023-11-19 05:13:24,791 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 23 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:24,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 55 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:13:24,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3003 states. [2023-11-19 05:13:24,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3003 to 3003. [2023-11-19 05:13:24,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 2951 states have (on average 2.949508641138597) internal successors, (8704), 3002 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:24,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 8704 transitions. [2023-11-19 05:13:24,896 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 8704 transitions. Word has length 18 [2023-11-19 05:13:24,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:24,898 INFO L495 AbstractCegarLoop]: Abstraction has 3003 states and 8704 transitions. [2023-11-19 05:13:24,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:24,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 8704 transitions. [2023-11-19 05:13:24,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 05:13:24,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:24,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:24,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 05:13:24,902 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 05:13:24,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:24,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1660557602, now seen corresponding path program 1 times [2023-11-19 05:13:24,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:24,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354776776] [2023-11-19 05:13:24,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:24,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:26,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:26,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:26,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354776776] [2023-11-19 05:13:26,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354776776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:26,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:26,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-19 05:13:26,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287462060] [2023-11-19 05:13:26,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:26,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 05:13:26,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:26,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 05:13:26,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-11-19 05:13:26,394 INFO L87 Difference]: Start difference. First operand 3003 states and 8704 transitions. Second operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:27,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:27,481 INFO L93 Difference]: Finished difference Result 3363 states and 9670 transitions. [2023-11-19 05:13:27,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 05:13:27,482 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-19 05:13:27,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:27,498 INFO L225 Difference]: With dead ends: 3363 [2023-11-19 05:13:27,498 INFO L226 Difference]: Without dead ends: 3363 [2023-11-19 05:13:27,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2023-11-19 05:13:27,499 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 203 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:27,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 98 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 05:13:27,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3363 states. [2023-11-19 05:13:27,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3363 to 3303. [2023-11-19 05:13:27,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3251 states have (on average 2.9357120885881267) internal successors, (9544), 3302 states have internal predecessors, (9544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:27,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9544 transitions. [2023-11-19 05:13:27,627 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9544 transitions. Word has length 19 [2023-11-19 05:13:27,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:27,628 INFO L495 AbstractCegarLoop]: Abstraction has 3303 states and 9544 transitions. [2023-11-19 05:13:27,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:27,628 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9544 transitions. [2023-11-19 05:13:27,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 05:13:27,630 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:27,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:27,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 05:13:27,631 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 05:13:27,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:27,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1520859021, now seen corresponding path program 1 times [2023-11-19 05:13:27,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:27,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428782604] [2023-11-19 05:13:27,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:27,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:28,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:28,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:28,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428782604] [2023-11-19 05:13:28,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428782604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:28,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:28,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 05:13:28,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778725012] [2023-11-19 05:13:28,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:28,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 05:13:28,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:28,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 05:13:28,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-19 05:13:28,320 INFO L87 Difference]: Start difference. First operand 3303 states and 9544 transitions. Second operand has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:29,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:29,231 INFO L93 Difference]: Finished difference Result 4005 states and 11417 transitions. [2023-11-19 05:13:29,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 05:13:29,238 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-19 05:13:29,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:29,257 INFO L225 Difference]: With dead ends: 4005 [2023-11-19 05:13:29,257 INFO L226 Difference]: Without dead ends: 4005 [2023-11-19 05:13:29,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2023-11-19 05:13:29,259 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 357 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:29,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 89 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 05:13:29,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4005 states. [2023-11-19 05:13:29,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4005 to 2603. [2023-11-19 05:13:29,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2603 states, 2551 states have (on average 2.8733829870638967) internal successors, (7330), 2602 states have internal predecessors, (7330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:29,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7330 transitions. [2023-11-19 05:13:29,349 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7330 transitions. Word has length 19 [2023-11-19 05:13:29,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:29,349 INFO L495 AbstractCegarLoop]: Abstraction has 2603 states and 7330 transitions. [2023-11-19 05:13:29,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:29,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7330 transitions. [2023-11-19 05:13:29,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 05:13:29,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:29,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:29,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 05:13:29,352 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 05:13:29,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:29,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1520859066, now seen corresponding path program 2 times [2023-11-19 05:13:29,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:29,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130927955] [2023-11-19 05:13:29,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:29,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:30,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:30,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:30,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130927955] [2023-11-19 05:13:30,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130927955] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:30,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:30,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-19 05:13:30,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167093188] [2023-11-19 05:13:30,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:30,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 05:13:30,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:30,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 05:13:30,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-11-19 05:13:30,585 INFO L87 Difference]: Start difference. First operand 2603 states and 7330 transitions. Second operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:31,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:31,657 INFO L93 Difference]: Finished difference Result 2931 states and 8184 transitions. [2023-11-19 05:13:31,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 05:13:31,658 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-19 05:13:31,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:31,671 INFO L225 Difference]: With dead ends: 2931 [2023-11-19 05:13:31,672 INFO L226 Difference]: Without dead ends: 2931 [2023-11-19 05:13:31,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2023-11-19 05:13:31,675 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 209 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:31,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 89 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 05:13:31,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2023-11-19 05:13:31,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 2543. [2023-11-19 05:13:31,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2543 states, 2491 states have (on average 2.8799678843837815) internal successors, (7174), 2542 states have internal predecessors, (7174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:31,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 7174 transitions. [2023-11-19 05:13:31,763 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 7174 transitions. Word has length 19 [2023-11-19 05:13:31,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:31,764 INFO L495 AbstractCegarLoop]: Abstraction has 2543 states and 7174 transitions. [2023-11-19 05:13:31,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:31,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 7174 transitions. [2023-11-19 05:13:31,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 05:13:31,766 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:31,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:31,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 05:13:31,767 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 05:13:31,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:31,767 INFO L85 PathProgramCache]: Analyzing trace with hash -289051484, now seen corresponding path program 3 times [2023-11-19 05:13:31,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:31,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236266748] [2023-11-19 05:13:31,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:31,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:33,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:33,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:33,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236266748] [2023-11-19 05:13:33,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236266748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:33,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:33,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-19 05:13:33,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786521576] [2023-11-19 05:13:33,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:33,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 05:13:33,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:33,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 05:13:33,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-11-19 05:13:33,309 INFO L87 Difference]: Start difference. First operand 2543 states and 7174 transitions. Second operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:34,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:34,196 INFO L93 Difference]: Finished difference Result 2723 states and 7643 transitions. [2023-11-19 05:13:34,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 05:13:34,197 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-19 05:13:34,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:34,209 INFO L225 Difference]: With dead ends: 2723 [2023-11-19 05:13:34,209 INFO L226 Difference]: Without dead ends: 2723 [2023-11-19 05:13:34,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2023-11-19 05:13:34,210 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 185 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:34,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 77 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:13:34,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2023-11-19 05:13:34,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 2423. [2023-11-19 05:13:34,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2371 states have (on average 2.878954027836356) internal successors, (6826), 2422 states have internal predecessors, (6826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:34,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 6826 transitions. [2023-11-19 05:13:34,282 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 6826 transitions. Word has length 19 [2023-11-19 05:13:34,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:34,283 INFO L495 AbstractCegarLoop]: Abstraction has 2423 states and 6826 transitions. [2023-11-19 05:13:34,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:34,283 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 6826 transitions. [2023-11-19 05:13:34,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 05:13:34,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:34,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:34,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 05:13:34,285 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 05:13:34,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:34,286 INFO L85 PathProgramCache]: Analyzing trace with hash -548240752, now seen corresponding path program 4 times [2023-11-19 05:13:34,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:34,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591154930] [2023-11-19 05:13:34,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:34,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:35,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:35,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:35,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591154930] [2023-11-19 05:13:35,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591154930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:35,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:35,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-19 05:13:35,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575678894] [2023-11-19 05:13:35,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:35,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 05:13:35,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:35,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 05:13:35,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:13:35,483 INFO L87 Difference]: Start difference. First operand 2423 states and 6826 transitions. Second operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:36,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:36,352 INFO L93 Difference]: Finished difference Result 2488 states and 6955 transitions. [2023-11-19 05:13:36,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 05:13:36,352 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-19 05:13:36,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:36,363 INFO L225 Difference]: With dead ends: 2488 [2023-11-19 05:13:36,363 INFO L226 Difference]: Without dead ends: 2488 [2023-11-19 05:13:36,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2023-11-19 05:13:36,364 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 235 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:36,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 71 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:13:36,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2488 states. [2023-11-19 05:13:36,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2488 to 2378. [2023-11-19 05:13:36,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2378 states, 2326 states have (on average 2.8766122098022358) internal successors, (6691), 2377 states have internal predecessors, (6691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:36,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2378 states to 2378 states and 6691 transitions. [2023-11-19 05:13:36,428 INFO L78 Accepts]: Start accepts. Automaton has 2378 states and 6691 transitions. Word has length 19 [2023-11-19 05:13:36,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:36,428 INFO L495 AbstractCegarLoop]: Abstraction has 2378 states and 6691 transitions. [2023-11-19 05:13:36,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:36,428 INFO L276 IsEmpty]: Start isEmpty. Operand 2378 states and 6691 transitions. [2023-11-19 05:13:36,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 05:13:36,431 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:36,431 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:36,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 05:13:36,431 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 05:13:36,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:36,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1555963009, now seen corresponding path program 1 times [2023-11-19 05:13:36,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:36,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611995244] [2023-11-19 05:13:36,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:36,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:36,509 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:36,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611995244] [2023-11-19 05:13:36,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611995244] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:13:36,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534631005] [2023-11-19 05:13:36,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:36,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:13:36,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68208164-a08a-4a42-aa35-4ab52b7a094c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:13:36,511 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68208164-a08a-4a42-aa35-4ab52b7a094c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:13:36,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68208164-a08a-4a42-aa35-4ab52b7a094c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:13:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:36,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:13:36,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:13:36,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:36,693 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:13:36,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534631005] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:36,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:13:36,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 05:13:36,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197629517] [2023-11-19 05:13:36,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:36,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:13:36,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:36,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:13:36,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:13:36,695 INFO L87 Difference]: Start difference. First operand 2378 states and 6691 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:36,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:36,865 INFO L93 Difference]: Finished difference Result 2290 states and 6351 transitions. [2023-11-19 05:13:36,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:13:36,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-19 05:13:36,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:36,876 INFO L225 Difference]: With dead ends: 2290 [2023-11-19 05:13:36,876 INFO L226 Difference]: Without dead ends: 2290 [2023-11-19 05:13:36,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:13:36,877 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 94 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:36,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 22 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:13:36,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2023-11-19 05:13:36,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 2258. [2023-11-19 05:13:36,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2258 states, 2218 states have (on average 2.840847610459874) internal successors, (6301), 2257 states have internal predecessors, (6301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:36,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2258 states to 2258 states and 6301 transitions. [2023-11-19 05:13:36,938 INFO L78 Accepts]: Start accepts. Automaton has 2258 states and 6301 transitions. Word has length 20 [2023-11-19 05:13:36,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:36,939 INFO L495 AbstractCegarLoop]: Abstraction has 2258 states and 6301 transitions. [2023-11-19 05:13:36,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:36,939 INFO L276 IsEmpty]: Start isEmpty. Operand 2258 states and 6301 transitions. [2023-11-19 05:13:36,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 05:13:36,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:36,942 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:36,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68208164-a08a-4a42-aa35-4ab52b7a094c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:13:37,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68208164-a08a-4a42-aa35-4ab52b7a094c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 05:13:37,163 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 05:13:37,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:37,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1555962960, now seen corresponding path program 1 times [2023-11-19 05:13:37,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:37,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781791092] [2023-11-19 05:13:37,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:37,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:37,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:13:37,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:37,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781791092] [2023-11-19 05:13:37,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781791092] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:37,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:37,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:13:37,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395963942] [2023-11-19 05:13:37,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:37,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:13:37,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:37,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:13:37,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:37,222 INFO L87 Difference]: Start difference. First operand 2258 states and 6301 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:37,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:37,343 INFO L93 Difference]: Finished difference Result 2138 states and 5911 transitions. [2023-11-19 05:13:37,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:13:37,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-19 05:13:37,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:37,351 INFO L225 Difference]: With dead ends: 2138 [2023-11-19 05:13:37,351 INFO L226 Difference]: Without dead ends: 2138 [2023-11-19 05:13:37,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:37,352 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 42 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:37,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 11 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:13:37,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2023-11-19 05:13:37,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 1778. [2023-11-19 05:13:37,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1750 states have (on average 2.810857142857143) internal successors, (4919), 1777 states have internal predecessors, (4919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:37,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 4919 transitions. [2023-11-19 05:13:37,398 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 4919 transitions. Word has length 20 [2023-11-19 05:13:37,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:37,399 INFO L495 AbstractCegarLoop]: Abstraction has 1778 states and 4919 transitions. [2023-11-19 05:13:37,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:37,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 4919 transitions. [2023-11-19 05:13:37,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 05:13:37,400 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:37,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:37,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-19 05:13:37,401 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 05:13:37,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:37,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1078392536, now seen corresponding path program 1 times [2023-11-19 05:13:37,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:37,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124633849] [2023-11-19 05:13:37,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:37,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:37,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:37,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:37,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124633849] [2023-11-19 05:13:37,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124633849] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:37,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:37,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 05:13:37,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146079517] [2023-11-19 05:13:37,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:37,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 05:13:37,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:37,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 05:13:37,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-19 05:13:37,881 INFO L87 Difference]: Start difference. First operand 1778 states and 4919 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:38,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:38,848 INFO L93 Difference]: Finished difference Result 3342 states and 9268 transitions. [2023-11-19 05:13:38,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 05:13:38,848 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-19 05:13:38,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:38,862 INFO L225 Difference]: With dead ends: 3342 [2023-11-19 05:13:38,862 INFO L226 Difference]: Without dead ends: 3342 [2023-11-19 05:13:38,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-19 05:13:38,864 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 300 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:38,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 103 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 05:13:38,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3342 states. [2023-11-19 05:13:38,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3342 to 2922. [2023-11-19 05:13:38,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2922 states, 2894 states have (on average 2.8928818244644092) internal successors, (8372), 2921 states have internal predecessors, (8372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:38,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 8372 transitions. [2023-11-19 05:13:38,958 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 8372 transitions. Word has length 21 [2023-11-19 05:13:38,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:38,958 INFO L495 AbstractCegarLoop]: Abstraction has 2922 states and 8372 transitions. [2023-11-19 05:13:38,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:38,959 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 8372 transitions. [2023-11-19 05:13:38,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 05:13:38,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:38,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:38,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-19 05:13:38,961 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 05:13:38,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:38,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1078392537, now seen corresponding path program 1 times [2023-11-19 05:13:38,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:38,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451254933] [2023-11-19 05:13:38,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:38,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:39,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:13:39,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:39,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451254933] [2023-11-19 05:13:39,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451254933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:39,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:39,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 05:13:39,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501127153] [2023-11-19 05:13:39,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:39,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 05:13:39,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:39,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 05:13:39,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-11-19 05:13:39,708 INFO L87 Difference]: Start difference. First operand 2922 states and 8372 transitions. Second operand has 13 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)