./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 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_8af4e178-5b1a-4be5-a69d-678e67ab754a/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8af4e178-5b1a-4be5-a69d-678e67ab754a/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_8af4e178-5b1a-4be5-a69d-678e67ab754a/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8af4e178-5b1a-4be5-a69d-678e67ab754a/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8af4e178-5b1a-4be5-a69d-678e67ab754a/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_8af4e178-5b1a-4be5-a69d-678e67ab754a/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 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:07:54,228 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:07:54,349 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8af4e178-5b1a-4be5-a69d-678e67ab754a/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 05:07:54,355 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:07:54,356 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:07:54,393 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:07:54,394 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:07:54,395 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:07:54,396 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:07:54,400 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:07:54,401 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:07:54,401 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:07:54,402 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:07:54,403 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:07:54,404 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:07:54,404 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:07:54,405 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:07:54,405 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:07:54,405 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:07:54,406 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:07:54,406 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:07:54,407 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:07:54,408 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:07:54,409 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:07:54,409 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:07:54,409 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:07:54,410 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:07:54,410 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:07:54,411 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:07:54,411 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:07:54,412 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:07:54,413 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:07:54,413 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:07:54,413 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:07:54,413 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:07:54,414 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:07:54,414 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:07:54,414 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:07:54,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:07:54,415 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:07:54,415 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:07:54,415 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:07:54,415 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:07:54,416 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:07:54,416 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:07:54,416 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:07:54,417 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:07:54,417 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_8af4e178-5b1a-4be5-a69d-678e67ab754a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8af4e178-5b1a-4be5-a69d-678e67ab754a/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 [2023-11-19 05:07:54,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:07:54,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:07:54,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:07:54,759 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:07:54,759 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:07:54,761 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8af4e178-5b1a-4be5-a69d-678e67ab754a/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2023-11-19 05:07:58,005 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:07:58,348 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:07:58,349 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8af4e178-5b1a-4be5-a69d-678e67ab754a/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2023-11-19 05:07:58,370 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8af4e178-5b1a-4be5-a69d-678e67ab754a/bin/utaipan-verify-t7M7D8N6sZ/data/9aa9b043c/1741eb5eca584f4f9c5e3a35339e070d/FLAG842d65ace [2023-11-19 05:07:58,387 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8af4e178-5b1a-4be5-a69d-678e67ab754a/bin/utaipan-verify-t7M7D8N6sZ/data/9aa9b043c/1741eb5eca584f4f9c5e3a35339e070d [2023-11-19 05:07:58,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:07:58,396 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:07:58,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:07:58,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:07:58,405 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:07:58,405 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:07:58" (1/1) ... [2023-11-19 05:07:58,407 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69055a55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:58, skipping insertion in model container [2023-11-19 05:07:58,407 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:07:58" (1/1) ... [2023-11-19 05:07:58,475 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:07:58,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:07:58,847 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:07:58,889 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:07:58,932 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:07:58,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:58 WrapperNode [2023-11-19 05:07:58,933 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:07:58,934 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:07:58,934 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:07:58,935 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:07:58,942 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:58" (1/1) ... [2023-11-19 05:07:58,957 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:58" (1/1) ... [2023-11-19 05:07:58,981 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2023-11-19 05:07:58,981 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:07:58,982 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:07:58,982 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:07:58,982 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:07:58,992 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:58" (1/1) ... [2023-11-19 05:07:58,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:58" (1/1) ... [2023-11-19 05:07:58,996 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:58" (1/1) ... [2023-11-19 05:07:58,996 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:58" (1/1) ... [2023-11-19 05:07:59,004 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:58" (1/1) ... [2023-11-19 05:07:59,009 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:58" (1/1) ... [2023-11-19 05:07:59,011 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:58" (1/1) ... [2023-11-19 05:07:59,012 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:58" (1/1) ... [2023-11-19 05:07:59,016 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:07:59,017 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:07:59,017 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:07:59,017 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:07:59,018 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:58" (1/1) ... [2023-11-19 05:07:59,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:07:59,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8af4e178-5b1a-4be5-a69d-678e67ab754a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:07:59,054 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8af4e178-5b1a-4be5-a69d-678e67ab754a/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:07:59,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8af4e178-5b1a-4be5-a69d-678e67ab754a/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:07:59,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:07:59,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:07:59,124 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 05:07:59,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:07:59,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:07:59,125 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 05:07:59,125 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 05:07:59,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:07:59,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:07:59,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:07:59,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:07:59,130 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 05:07:59,330 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:07:59,333 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:07:59,607 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:07:59,618 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:07:59,619 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-19 05:07:59,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:07:59 BoogieIcfgContainer [2023-11-19 05:07:59,623 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:07:59,626 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:07:59,627 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:07:59,630 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:07:59,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:07:58" (1/3) ... [2023-11-19 05:07:59,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@146edd9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:07:59, skipping insertion in model container [2023-11-19 05:07:59,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:58" (2/3) ... [2023-11-19 05:07:59,637 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@146edd9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:07:59, skipping insertion in model container [2023-11-19 05:07:59,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:07:59" (3/3) ... [2023-11-19 05:07:59,638 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_22-deref_read_racefree.i [2023-11-19 05:07:59,649 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 05:07:59,661 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:07:59,661 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 05:07:59,661 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 05:07:59,751 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 05:07:59,791 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:07:59,807 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 119 transitions, 242 flow [2023-11-19 05:07:59,811 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 119 transitions, 242 flow [2023-11-19 05:07:59,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 119 transitions, 242 flow [2023-11-19 05:07:59,891 INFO L124 PetriNetUnfolderBase]: 16/158 cut-off events. [2023-11-19 05:07:59,893 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 05:07:59,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 158 events. 16/158 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 403 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 88. Up to 4 conditions per place. [2023-11-19 05:07:59,908 INFO L119 LiptonReduction]: Number of co-enabled transitions 3920 [2023-11-19 05:08:04,328 INFO L134 LiptonReduction]: Checked pairs total: 6591 [2023-11-19 05:08:04,330 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-11-19 05:08:04,352 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 36 transitions, 76 flow [2023-11-19 05:08:04,412 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 174 states, 155 states have (on average 2.735483870967742) internal successors, (424), 173 states have internal predecessors, (424), 0 states have call successors, (0), 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 05:08:04,432 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:08:04,439 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;@378e1a6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:08:04,439 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-19 05:08:04,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 155 states have (on average 2.735483870967742) internal successors, (424), 173 states have internal predecessors, (424), 0 states have call successors, (0), 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 05:08:04,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:08:04,447 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:04,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:08:04,449 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-19 05:08:04,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:04,454 INFO L85 PathProgramCache]: Analyzing trace with hash 14628296, now seen corresponding path program 1 times [2023-11-19 05:08:04,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:04,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039956251] [2023-11-19 05:08:04,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:04,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:04,888 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 05:08:04,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:04,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039956251] [2023-11-19 05:08:04,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039956251] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:04,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:04,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:08:04,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952702622] [2023-11-19 05:08:04,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:04,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:04,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:04,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:04,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:04,927 INFO L87 Difference]: Start difference. First operand has 174 states, 155 states have (on average 2.735483870967742) internal successors, (424), 173 states have internal predecessors, (424), 0 states have call successors, (0), 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 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 05:08:05,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:05,041 INFO L93 Difference]: Finished difference Result 142 states and 256 transitions. [2023-11-19 05:08:05,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:05,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2023-11-19 05:08:05,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:05,057 INFO L225 Difference]: With dead ends: 142 [2023-11-19 05:08:05,057 INFO L226 Difference]: Without dead ends: 127 [2023-11-19 05:08:05,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 05:08:05,062 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:05,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 6 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:08:05,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-19 05:08:05,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2023-11-19 05:08:05,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 118 states have (on average 1.9152542372881356) internal successors, (226), 126 states have internal predecessors, (226), 0 states have call successors, (0), 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 05:08:05,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 226 transitions. [2023-11-19 05:08:05,132 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 226 transitions. Word has length 4 [2023-11-19 05:08:05,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:05,133 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 226 transitions. [2023-11-19 05:08:05,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 05:08:05,138 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 226 transitions. [2023-11-19 05:08:05,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:08:05,139 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:05,139 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 05:08:05,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:08:05,140 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-19 05:08:05,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:05,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1172922296, now seen corresponding path program 1 times [2023-11-19 05:08:05,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:05,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91916201] [2023-11-19 05:08:05,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:05,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:08:05,204 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:08:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:08:05,272 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:08:05,272 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:08:05,274 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-11-19 05:08:05,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2023-11-19 05:08:05,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2023-11-19 05:08:05,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2023-11-19 05:08:05,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2023-11-19 05:08:05,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2023-11-19 05:08:05,278 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2023-11-19 05:08:05,278 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2023-11-19 05:08:05,278 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2023-11-19 05:08:05,279 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2023-11-19 05:08:05,280 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2023-11-19 05:08:05,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:08:05,283 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 05:08:05,285 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 05:08:05,285 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 05:08:05,321 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 05:08:05,331 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:08:05,331 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 160 transitions, 330 flow [2023-11-19 05:08:05,332 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 160 transitions, 330 flow [2023-11-19 05:08:05,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 160 transitions, 330 flow [2023-11-19 05:08:05,439 INFO L124 PetriNetUnfolderBase]: 27/247 cut-off events. [2023-11-19 05:08:05,440 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 05:08:05,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 247 events. 27/247 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 781 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 159. Up to 6 conditions per place. [2023-11-19 05:08:05,460 INFO L119 LiptonReduction]: Number of co-enabled transitions 11120 [2023-11-19 05:08:10,223 INFO L134 LiptonReduction]: Checked pairs total: 22036 [2023-11-19 05:08:10,224 INFO L136 LiptonReduction]: Total number of compositions: 159 [2023-11-19 05:08:10,225 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 59 transitions, 128 flow [2023-11-19 05:08:10,382 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3241 states, 3128 states have (on average 3.8554987212276215) internal successors, (12060), 3240 states have internal predecessors, (12060), 0 states have call successors, (0), 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 05:08:10,384 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:08:10,385 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;@378e1a6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:08:10,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-19 05:08:10,399 INFO L276 IsEmpty]: Start isEmpty. Operand has 3241 states, 3128 states have (on average 3.8554987212276215) internal successors, (12060), 3240 states have internal predecessors, (12060), 0 states have call successors, (0), 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 05:08:10,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:08:10,400 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:10,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:08:10,400 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-19 05:08:10,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:10,401 INFO L85 PathProgramCache]: Analyzing trace with hash 796714905, now seen corresponding path program 1 times [2023-11-19 05:08:10,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:10,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113066577] [2023-11-19 05:08:10,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:10,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:10,458 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 05:08:10,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:10,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113066577] [2023-11-19 05:08:10,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113066577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:10,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:10,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:08:10,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442754009] [2023-11-19 05:08:10,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:10,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:10,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:10,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:10,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:10,475 INFO L87 Difference]: Start difference. First operand has 3241 states, 3128 states have (on average 3.8554987212276215) internal successors, (12060), 3240 states have internal predecessors, (12060), 0 states have call successors, (0), 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 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 05:08:10,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:10,624 INFO L93 Difference]: Finished difference Result 3209 states and 8833 transitions. [2023-11-19 05:08:10,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:10,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2023-11-19 05:08:10,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:10,655 INFO L225 Difference]: With dead ends: 3209 [2023-11-19 05:08:10,656 INFO L226 Difference]: Without dead ends: 3119 [2023-11-19 05:08:10,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 05:08:10,658 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:10,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 12 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:08:10,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3119 states. [2023-11-19 05:08:10,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3119 to 3119. [2023-11-19 05:08:10,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3119 states, 3016 states have (on average 2.844164456233422) internal successors, (8578), 3118 states have internal predecessors, (8578), 0 states have call successors, (0), 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 05:08:10,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3119 states to 3119 states and 8578 transitions. [2023-11-19 05:08:10,798 INFO L78 Accepts]: Start accepts. Automaton has 3119 states and 8578 transitions. Word has length 5 [2023-11-19 05:08:10,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:10,798 INFO L495 AbstractCegarLoop]: Abstraction has 3119 states and 8578 transitions. [2023-11-19 05:08:10,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 05:08:10,799 INFO L276 IsEmpty]: Start isEmpty. Operand 3119 states and 8578 transitions. [2023-11-19 05:08:10,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:08:10,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:10,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:10,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:08:10,800 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-19 05:08:10,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:10,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1145644404, now seen corresponding path program 1 times [2023-11-19 05:08:10,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:10,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069146319] [2023-11-19 05:08:10,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:10,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:10,962 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 05:08:10,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:10,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069146319] [2023-11-19 05:08:10,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069146319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:10,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:10,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:08:10,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499142267] [2023-11-19 05:08:10,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:10,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:08:10,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:10,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:08:10,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:08:10,966 INFO L87 Difference]: Start difference. First operand 3119 states and 8578 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 05:08:11,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:11,113 INFO L93 Difference]: Finished difference Result 2813 states and 7702 transitions. [2023-11-19 05:08:11,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:08:11,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 05:08:11,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:11,138 INFO L225 Difference]: With dead ends: 2813 [2023-11-19 05:08:11,139 INFO L226 Difference]: Without dead ends: 2813 [2023-11-19 05:08:11,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:08:11,140 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 25 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:11,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 19 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:08:11,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2023-11-19 05:08:11,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 2813. [2023-11-19 05:08:11,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2813 states, 2728 states have (on average 2.8233137829912023) internal successors, (7702), 2812 states have internal predecessors, (7702), 0 states have call successors, (0), 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 05:08:11,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2813 states to 2813 states and 7702 transitions. [2023-11-19 05:08:11,322 INFO L78 Accepts]: Start accepts. Automaton has 2813 states and 7702 transitions. Word has length 7 [2023-11-19 05:08:11,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:11,323 INFO L495 AbstractCegarLoop]: Abstraction has 2813 states and 7702 transitions. [2023-11-19 05:08:11,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 05:08:11,324 INFO L276 IsEmpty]: Start isEmpty. Operand 2813 states and 7702 transitions. [2023-11-19 05:08:11,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:08:11,325 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:11,325 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 05:08:11,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:08:11,326 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-19 05:08:11,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:11,327 INFO L85 PathProgramCache]: Analyzing trace with hash -738858808, now seen corresponding path program 1 times [2023-11-19 05:08:11,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:11,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551692089] [2023-11-19 05:08:11,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:11,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:11,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:08:11,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:11,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551692089] [2023-11-19 05:08:11,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551692089] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:11,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:11,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:08:11,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908588992] [2023-11-19 05:08:11,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:11,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:11,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:11,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:11,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:11,401 INFO L87 Difference]: Start difference. First operand 2813 states and 7702 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 05:08:11,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:11,510 INFO L93 Difference]: Finished difference Result 2581 states and 7038 transitions. [2023-11-19 05:08:11,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:11,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 05:08:11,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:11,535 INFO L225 Difference]: With dead ends: 2581 [2023-11-19 05:08:11,535 INFO L226 Difference]: Without dead ends: 2581 [2023-11-19 05:08:11,535 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 05:08:11,537 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 33 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:11,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 10 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:08:11,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2581 states. [2023-11-19 05:08:11,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2581 to 2581. [2023-11-19 05:08:11,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2581 states, 2517 states have (on average 2.7961859356376637) internal successors, (7038), 2580 states have internal predecessors, (7038), 0 states have call successors, (0), 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 05:08:11,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2581 states to 2581 states and 7038 transitions. [2023-11-19 05:08:11,661 INFO L78 Accepts]: Start accepts. Automaton has 2581 states and 7038 transitions. Word has length 9 [2023-11-19 05:08:11,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:11,662 INFO L495 AbstractCegarLoop]: Abstraction has 2581 states and 7038 transitions. [2023-11-19 05:08:11,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 05:08:11,663 INFO L276 IsEmpty]: Start isEmpty. Operand 2581 states and 7038 transitions. [2023-11-19 05:08:11,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:08:11,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:11,665 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 05:08:11,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:08:11,668 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-19 05:08:11,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:11,669 INFO L85 PathProgramCache]: Analyzing trace with hash -738858839, now seen corresponding path program 1 times [2023-11-19 05:08:11,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:11,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403184277] [2023-11-19 05:08:11,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:11,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:11,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:11,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:11,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403184277] [2023-11-19 05:08:11,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403184277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:11,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:11,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:08:11,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344284541] [2023-11-19 05:08:11,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:11,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:11,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:11,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:11,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:11,748 INFO L87 Difference]: Start difference. First operand 2581 states and 7038 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 05:08:11,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:11,852 INFO L93 Difference]: Finished difference Result 2349 states and 6374 transitions. [2023-11-19 05:08:11,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:11,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 05:08:11,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:11,873 INFO L225 Difference]: With dead ends: 2349 [2023-11-19 05:08:11,874 INFO L226 Difference]: Without dead ends: 2349 [2023-11-19 05:08:11,874 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 05:08:11,875 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 32 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:11,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 10 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:08:11,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2023-11-19 05:08:11,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 2349. [2023-11-19 05:08:11,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2349 states, 2306 states have (on average 2.7640936686903728) internal successors, (6374), 2348 states have internal predecessors, (6374), 0 states have call successors, (0), 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 05:08:12,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2349 states to 2349 states and 6374 transitions. [2023-11-19 05:08:12,013 INFO L78 Accepts]: Start accepts. Automaton has 2349 states and 6374 transitions. Word has length 9 [2023-11-19 05:08:12,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:12,014 INFO L495 AbstractCegarLoop]: Abstraction has 2349 states and 6374 transitions. [2023-11-19 05:08:12,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 05:08:12,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2349 states and 6374 transitions. [2023-11-19 05:08:12,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:08:12,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:12,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:12,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:08:12,016 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-19 05:08:12,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:12,017 INFO L85 PathProgramCache]: Analyzing trace with hash 150005788, now seen corresponding path program 1 times [2023-11-19 05:08:12,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:12,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016247782] [2023-11-19 05:08:12,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:12,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:12,243 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 05:08:12,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:12,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016247782] [2023-11-19 05:08:12,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016247782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:12,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:12,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:08:12,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640257596] [2023-11-19 05:08:12,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:12,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:08:12,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:12,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:08:12,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:08:12,245 INFO L87 Difference]: Start difference. First operand 2349 states and 6374 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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 05:08:12,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:12,573 INFO L93 Difference]: Finished difference Result 3348 states and 8953 transitions. [2023-11-19 05:08:12,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 05:08:12,574 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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 05:08:12,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:12,607 INFO L225 Difference]: With dead ends: 3348 [2023-11-19 05:08:12,608 INFO L226 Difference]: Without dead ends: 3348 [2023-11-19 05:08:12,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:08:12,609 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 136 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:12,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 46 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:08:12,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3348 states. [2023-11-19 05:08:12,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3348 to 3016. [2023-11-19 05:08:12,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3016 states, 2974 states have (on average 2.7942165433759247) internal successors, (8310), 3015 states have internal predecessors, (8310), 0 states have call successors, (0), 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 05:08:12,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 8310 transitions. [2023-11-19 05:08:12,733 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 8310 transitions. Word has length 11 [2023-11-19 05:08:12,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:12,734 INFO L495 AbstractCegarLoop]: Abstraction has 3016 states and 8310 transitions. [2023-11-19 05:08:12,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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 05:08:12,734 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 8310 transitions. [2023-11-19 05:08:12,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:08:12,735 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:12,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:12,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 05:08:12,736 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-19 05:08:12,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:12,737 INFO L85 PathProgramCache]: Analyzing trace with hash 150005817, now seen corresponding path program 1 times [2023-11-19 05:08:12,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:12,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499795632] [2023-11-19 05:08:12,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:12,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:12,880 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 05:08:12,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:12,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499795632] [2023-11-19 05:08:12,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499795632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:12,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:12,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:08:12,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916743272] [2023-11-19 05:08:12,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:12,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:08:12,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:12,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:08:12,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:08:12,883 INFO L87 Difference]: Start difference. First operand 3016 states and 8310 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 05:08:13,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:13,077 INFO L93 Difference]: Finished difference Result 3517 states and 9232 transitions. [2023-11-19 05:08:13,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:08:13,078 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 05:08:13,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:13,107 INFO L225 Difference]: With dead ends: 3517 [2023-11-19 05:08:13,107 INFO L226 Difference]: Without dead ends: 3417 [2023-11-19 05:08:13,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 05:08:13,109 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 85 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:13,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 33 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:08:13,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3417 states. [2023-11-19 05:08:13,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3417 to 2921. [2023-11-19 05:08:13,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2921 states, 2886 states have (on average 2.725225225225225) internal successors, (7865), 2920 states have internal predecessors, (7865), 0 states have call successors, (0), 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 05:08:13,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2921 states to 2921 states and 7865 transitions. [2023-11-19 05:08:13,225 INFO L78 Accepts]: Start accepts. Automaton has 2921 states and 7865 transitions. Word has length 11 [2023-11-19 05:08:13,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:13,225 INFO L495 AbstractCegarLoop]: Abstraction has 2921 states and 7865 transitions. [2023-11-19 05:08:13,226 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 05:08:13,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2921 states and 7865 transitions. [2023-11-19 05:08:13,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:08:13,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:13,227 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 05:08:13,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 05:08:13,227 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-19 05:08:13,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:13,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1373660990, now seen corresponding path program 1 times [2023-11-19 05:08:13,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:13,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385294267] [2023-11-19 05:08:13,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:13,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:08:13,243 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:08:13,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:08:13,258 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:08:13,259 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:08:13,259 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2023-11-19 05:08:13,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2023-11-19 05:08:13,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2023-11-19 05:08:13,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2023-11-19 05:08:13,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2023-11-19 05:08:13,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2023-11-19 05:08:13,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2023-11-19 05:08:13,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2023-11-19 05:08:13,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2023-11-19 05:08:13,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2023-11-19 05:08:13,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2023-11-19 05:08:13,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2023-11-19 05:08:13,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2023-11-19 05:08:13,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2023-11-19 05:08:13,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2023-11-19 05:08:13,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 05:08:13,263 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:13,263 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 05:08:13,263 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 05:08:13,287 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 05:08:13,290 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:08:13,291 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 201 transitions, 420 flow [2023-11-19 05:08:13,291 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 201 transitions, 420 flow [2023-11-19 05:08:13,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 201 transitions, 420 flow [2023-11-19 05:08:13,347 INFO L124 PetriNetUnfolderBase]: 38/336 cut-off events. [2023-11-19 05:08:13,348 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 05:08:13,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 336 events. 38/336 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1145 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 251. Up to 8 conditions per place. [2023-11-19 05:08:13,372 INFO L119 LiptonReduction]: Number of co-enabled transitions 21600 [2023-11-19 05:08:18,443 INFO L134 LiptonReduction]: Checked pairs total: 45874 [2023-11-19 05:08:18,444 INFO L136 LiptonReduction]: Total number of compositions: 195 [2023-11-19 05:08:18,445 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 67 places, 81 transitions, 180 flow [2023-11-19 05:08:20,997 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 52132 states, 51545 states have (on average 5.087399359782714) internal successors, (262230), 52131 states have internal predecessors, (262230), 0 states have call successors, (0), 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 05:08:20,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:08:21,000 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;@378e1a6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:08:21,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-19 05:08:21,245 INFO L276 IsEmpty]: Start isEmpty. Operand has 52132 states, 51545 states have (on average 5.087399359782714) internal successors, (262230), 52131 states have internal predecessors, (262230), 0 states have call successors, (0), 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 05:08:21,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:08:21,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:21,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:08:21,254 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 05:08:21,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:21,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1213380539, now seen corresponding path program 1 times [2023-11-19 05:08:21,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:21,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206385089] [2023-11-19 05:08:21,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:21,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:21,306 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 05:08:21,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:21,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206385089] [2023-11-19 05:08:21,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206385089] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:21,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:21,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:08:21,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28249918] [2023-11-19 05:08:21,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:21,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:21,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:21,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:21,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:21,460 INFO L87 Difference]: Start difference. First operand has 52132 states, 51545 states have (on average 5.087399359782714) internal successors, (262230), 52131 states have internal predecessors, (262230), 0 states have call successors, (0), 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 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 05:08:22,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:22,868 INFO L93 Difference]: Finished difference Result 52100 states and 191629 transitions. [2023-11-19 05:08:22,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:22,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2023-11-19 05:08:22,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:23,589 INFO L225 Difference]: With dead ends: 52100 [2023-11-19 05:08:23,590 INFO L226 Difference]: Without dead ends: 51695 [2023-11-19 05:08:23,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 05:08:23,591 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:23,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 16 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:08:23,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51695 states. [2023-11-19 05:08:26,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51695 to 51695. [2023-11-19 05:08:26,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51695 states, 51118 states have (on average 3.719120466371924) internal successors, (190114), 51694 states have internal predecessors, (190114), 0 states have call successors, (0), 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 05:08:26,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51695 states to 51695 states and 190114 transitions. [2023-11-19 05:08:26,740 INFO L78 Accepts]: Start accepts. Automaton has 51695 states and 190114 transitions. Word has length 5 [2023-11-19 05:08:26,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:26,740 INFO L495 AbstractCegarLoop]: Abstraction has 51695 states and 190114 transitions. [2023-11-19 05:08:26,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 05:08:26,740 INFO L276 IsEmpty]: Start isEmpty. Operand 51695 states and 190114 transitions. [2023-11-19 05:08:26,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:08:26,741 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:26,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:26,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 05:08:26,742 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 05:08:26,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:26,743 INFO L85 PathProgramCache]: Analyzing trace with hash 2130991562, now seen corresponding path program 1 times [2023-11-19 05:08:26,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:26,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413060833] [2023-11-19 05:08:26,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:26,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:26,895 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 05:08:26,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:26,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413060833] [2023-11-19 05:08:26,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413060833] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:26,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:26,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:08:26,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670892844] [2023-11-19 05:08:26,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:26,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:08:26,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:26,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:08:26,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:08:26,899 INFO L87 Difference]: Start difference. First operand 51695 states and 190114 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 05:08:27,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:27,670 INFO L93 Difference]: Finished difference Result 48797 states and 179040 transitions. [2023-11-19 05:08:27,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:08:27,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 05:08:27,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:28,010 INFO L225 Difference]: With dead ends: 48797 [2023-11-19 05:08:28,011 INFO L226 Difference]: Without dead ends: 48797 [2023-11-19 05:08:28,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:08:28,013 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 54 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:28,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 21 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:08:28,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48797 states. [2023-11-19 05:08:29,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48797 to 48797. [2023-11-19 05:08:29,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48797 states, 48266 states have (on average 3.709443500600837) internal successors, (179040), 48796 states have internal predecessors, (179040), 0 states have call successors, (0), 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 05:08:30,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48797 states to 48797 states and 179040 transitions. [2023-11-19 05:08:30,531 INFO L78 Accepts]: Start accepts. Automaton has 48797 states and 179040 transitions. Word has length 7 [2023-11-19 05:08:30,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:30,531 INFO L495 AbstractCegarLoop]: Abstraction has 48797 states and 179040 transitions. [2023-11-19 05:08:30,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 05:08:30,531 INFO L276 IsEmpty]: Start isEmpty. Operand 48797 states and 179040 transitions. [2023-11-19 05:08:30,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:08:30,533 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:30,533 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 05:08:30,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 05:08:30,534 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 05:08:30,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:30,534 INFO L85 PathProgramCache]: Analyzing trace with hash -264050981, now seen corresponding path program 1 times [2023-11-19 05:08:30,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:30,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216073640] [2023-11-19 05:08:30,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:30,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:30,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:08:30,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:30,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216073640] [2023-11-19 05:08:30,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216073640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:30,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:30,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:08:30,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956147611] [2023-11-19 05:08:30,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:30,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:30,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:30,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:30,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:30,591 INFO L87 Difference]: Start difference. First operand 48797 states and 179040 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 05:08:31,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:31,112 INFO L93 Difference]: Finished difference Result 44687 states and 163632 transitions. [2023-11-19 05:08:31,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:31,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 05:08:31,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:31,455 INFO L225 Difference]: With dead ends: 44687 [2023-11-19 05:08:31,456 INFO L226 Difference]: Without dead ends: 44687 [2023-11-19 05:08:31,456 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 05:08:31,457 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 49 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:31,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 14 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:08:31,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44687 states. [2023-11-19 05:08:32,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44687 to 44687. [2023-11-19 05:08:32,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44687 states, 44294 states have (on average 3.6942249514606944) internal successors, (163632), 44686 states have internal predecessors, (163632), 0 states have call successors, (0), 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 05:08:33,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44687 states to 44687 states and 163632 transitions. [2023-11-19 05:08:33,638 INFO L78 Accepts]: Start accepts. Automaton has 44687 states and 163632 transitions. Word has length 9 [2023-11-19 05:08:33,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:33,638 INFO L495 AbstractCegarLoop]: Abstraction has 44687 states and 163632 transitions. [2023-11-19 05:08:33,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 05:08:33,638 INFO L276 IsEmpty]: Start isEmpty. Operand 44687 states and 163632 transitions. [2023-11-19 05:08:33,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:08:33,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:33,639 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 05:08:33,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 05:08:33,639 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 05:08:33,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:33,640 INFO L85 PathProgramCache]: Analyzing trace with hash -264051025, now seen corresponding path program 1 times [2023-11-19 05:08:33,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:33,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339007353] [2023-11-19 05:08:33,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:33,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:33,686 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:33,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:33,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339007353] [2023-11-19 05:08:33,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339007353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:33,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:33,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:08:33,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341944429] [2023-11-19 05:08:33,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:33,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:33,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:33,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:33,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:33,690 INFO L87 Difference]: Start difference. First operand 44687 states and 163632 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 05:08:34,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:34,105 INFO L93 Difference]: Finished difference Result 40577 states and 148224 transitions. [2023-11-19 05:08:34,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:34,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 05:08:34,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:34,367 INFO L225 Difference]: With dead ends: 40577 [2023-11-19 05:08:34,367 INFO L226 Difference]: Without dead ends: 40577 [2023-11-19 05:08:34,367 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 05:08:34,368 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 48 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:34,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 14 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:08:34,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40577 states. [2023-11-19 05:08:35,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40577 to 40577. [2023-11-19 05:08:35,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40577 states, 40322 states have (on average 3.676008134517137) internal successors, (148224), 40576 states have internal predecessors, (148224), 0 states have call successors, (0), 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 05:08:36,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40577 states to 40577 states and 148224 transitions. [2023-11-19 05:08:36,061 INFO L78 Accepts]: Start accepts. Automaton has 40577 states and 148224 transitions. Word has length 9 [2023-11-19 05:08:36,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:36,061 INFO L495 AbstractCegarLoop]: Abstraction has 40577 states and 148224 transitions. [2023-11-19 05:08:36,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 05:08:36,061 INFO L276 IsEmpty]: Start isEmpty. Operand 40577 states and 148224 transitions. [2023-11-19 05:08:36,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:08:36,061 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:36,062 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:36,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 05:08:36,062 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 05:08:36,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:36,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1301790311, now seen corresponding path program 1 times [2023-11-19 05:08:36,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:36,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256425276] [2023-11-19 05:08:36,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:36,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:36,164 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 05:08:36,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:36,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256425276] [2023-11-19 05:08:36,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256425276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:36,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:36,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:08:36,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144739633] [2023-11-19 05:08:36,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:36,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:36,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:36,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:36,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:36,167 INFO L87 Difference]: Start difference. First operand 40577 states and 148224 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 05:08:37,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:37,344 INFO L93 Difference]: Finished difference Result 61385 states and 218945 transitions. [2023-11-19 05:08:37,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:37,345 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 05:08:37,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:37,624 INFO L225 Difference]: With dead ends: 61385 [2023-11-19 05:08:37,624 INFO L226 Difference]: Without dead ends: 61385 [2023-11-19 05:08:37,625 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 05:08:37,625 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 39 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:37,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 23 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:08:37,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61385 states. [2023-11-19 05:08:39,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61385 to 51382. [2023-11-19 05:08:39,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51382 states, 51138 states have (on average 3.675916148461027) internal successors, (187979), 51381 states have internal predecessors, (187979), 0 states have call successors, (0), 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 05:08:39,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51382 states to 51382 states and 187979 transitions. [2023-11-19 05:08:39,550 INFO L78 Accepts]: Start accepts. Automaton has 51382 states and 187979 transitions. Word has length 11 [2023-11-19 05:08:39,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:39,550 INFO L495 AbstractCegarLoop]: Abstraction has 51382 states and 187979 transitions. [2023-11-19 05:08:39,550 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 05:08:39,550 INFO L276 IsEmpty]: Start isEmpty. Operand 51382 states and 187979 transitions. [2023-11-19 05:08:39,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:08:39,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:39,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:39,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 05:08:39,552 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 05:08:39,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:39,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1301790271, now seen corresponding path program 1 times [2023-11-19 05:08:39,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:39,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203059469] [2023-11-19 05:08:39,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:39,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:39,708 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 05:08:39,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:39,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203059469] [2023-11-19 05:08:39,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203059469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:39,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:39,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:08:39,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197958900] [2023-11-19 05:08:39,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:39,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:08:39,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:39,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:08:39,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:08:39,712 INFO L87 Difference]: Start difference. First operand 51382 states and 187979 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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)